bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effect of Reduction Cross Section Area and Rolling Temperature in Mechanical Properties of Al-Cu
Authors: Siahaan Erwin
Published: December 2020

Aluminium is one of the materials that mostly used in the industry after iron and steel. One of the methods that can be used to optimize their mechanical properties is a rolling process. However, the rolling process cannot be obtained at a low temperature since the formability of Al- Cu quite low. According to this research, the rolling process carries out at a high temperature; it is above its recrystallization temperature. The point of this research is to discern the maximum reduction in the temperature of 300°C, 400°C and 500°C and the influence of the mechanical properties. Based on the research the result shows us the higher temperature in hot rolling (300°C, 400oC, and 500°C), it can decrease 7,1% the hardness value but it can increase 550% the cross-section reduction. However, the toughness value of the material will increase. It shows us from the result of tensile strain up to 18%, the result of yield strain up to 130,77% and the elongation value up to 600%. The increasing of temperature in hot rolling in Al- Cu 2024 to achieve the formation of the intermetallic unit on intergranular grain finer.
A study on the response of high aspect ratio composite wing structures due to gust load
Authors: Gusto Andika Matza , Kismono Hadi Bambang , Adhy Sasongko Rianto
Published: December 2020

The purpose of this study is to acquire the correlation between composite tailoring at symmetric balanced laminate and gust response on high aspect ratio wing. As a flexible structure, the high aspect ratio wing had a susceptibility from dynamic loading. Gust or turbulence load is one of dynamic loading which can have a bad impact on the wing structure. There are many incidents caused by turbulence load, hence to obtain structural response is important. Because gust load is a stiffness problem, one way to handle these effects is to make the airframe more rigid which is not favorable due to the weight penalty in the gross weight of the aircraft. Plies orientations can be an alternative to make structure stiffer without adding structural weight. From this study, plies-orientations at symmetrically laminated composite had been varied starting from 0 to 90 degrees with 5 degrees increment at the skin of the wing. Bending and torsional natural frequencies have changed where changed in play orientation as well as the vibration response from the gust load. The discrete gust cases defined in the EASA requirements are used in this study. The structural response from the gust problem had different characteristics between angle plies laminate, cross-plies laminate, and various plies orientation. As a result of this research that symmetrically balanced laminate composite with fiber direction ±15 or ±75 degrees had a good bending characteristic, nevertheless that direction have the lowest bending stiffness. Further research needs to optimize the plies orientation to design the high aspect ratio wing which has a good aeroelastic response and minimize weight.
Covid-19 Series: A rule-based decision support system for analysis behavior of people while working from home
Authors: Henderi  , Putri Merliasari Rani , Warnars Harco L.H. S. , Sugiyatno
Published: December 2020

COVID-19 makes the community must carry out activities such as school, work, and worship at home. However, the long-running activities from home make people experience boredom which can lead to stress. On the other side, the entertainment obtained by the public through smartphones by reading articles by their interests can reduce boredom. This paper proposed a rules-based decision support system to help the people to make choices of their activities from home while COVID-19 e rules-based approach for make an application decision support system. Ruled base used in application to selected process through characteristics following the interests of the community. This decision support system is implemented in mobile web applications. The system can display articles based on interests by questions or statements through the front end system. The results showed that most users of the application in a happy condition while working from home.
Analysis of Shell and Tube Heat Exchanger Type
Authors: Tanujaya Harto , Riza Abrar
Published: December 2020

The stationary-head prototypes unusually are designed using low cost manufacture and simple construction, without bolt or nut to join both the stationary-head and shell. The shell has four holes to supply hot/cold fluid, and next to the tube-sheet hole to supply cold/hot fluid, the position both of them are inside the stationary-head. The calculation of the dimensions of the heat exchanger aims to determine the quality of the heat exchanger based on the overall heat transfer coefficient, impurity factor, and the pressure drop that will occur.Calculations using the LMTD method, obtained that receive heat released has a large unity with time Q, then the heat received by cold fluid is Q = 4565.16 W, LMTD produced also shows the number 20, with a proven factor (F) is 1. Comparison obtained from the calculation of the tube side and shell side is the value of Re generated is greater than the value of Re on the shell side.
The Effect of Using Composite Column for Enhancing Structural Stiffness
Authors: Juniarto Christian , Leman Sunarjo
Published: December 2020

The aims from this study is to determine which story has the greatest effect on the structure by using a structural column from composite material that is consist of steel and concrete combined together. Using the help of MIDAS GEN software to do the structural analysis. 5 models were made to capture the lateral displacement due to earthquake loading using linear dynamic procedure. Model 1 is a steel only structure followed by next model using composite materials starting from the bottom 2 floors (model 2 ), 4 floors (model 3), 6 floor (model 4), all floors (model 5). From all of the models that is used, we can conclude that the bottom 2 story is the one that has greatest impact in lowering the lateral displacement.
Utilization of machining technology in the production process of Jepara wood carving furniture
Authors: Supriyatna Eddy , Purna Irawan Agustinus , Widya Maitri , Mutiara
Published: December 2020

The wood carving furniture design that develops in Jepara, always tries to keep up with the universal global market demand. The production process of Jepara wood carving requires accuracy and speed without leaving good artistic value and beauty. Therefore, production machine technology is needed to be able to realize the results of research into the development of wood carving furniture design in accordance with global market expectations. This study aims to obtain an overview of production technology that can be implemented in the Jepara wood carving furniture production process, so as to produce a high quality product, an effective and efficient production process in accordance with consumer needs. The results of this study will be one of the references in the development of production facilities for making Jepara wood carving furniture.
Quality Management System in Automatic Machine Construction Based on ISO 9001
Authors: Venisa Gosan Meivi , Kosasih Wilson
Published: December 2020

This paper discusses how the implementation of quality management system (QMS) based on ISO 9001, which more studies ways to overcome defective products and also solutions to problems that often occur. This study was conducted at a company in Tangerang which is engaged in industrial automation. The analysis was carried out by observing and interviewing the company’s management. It was found that the quality inspection at this company included starting of incoming raw materials, parts or components in the process as well as finished goods. To cope with non-conformance products, if the product can still be repaired, it will be fixed again. If not, the product will be put on a shelf called “rejected design”. Some of the problems that are often faced by the quality control department include: errors in checking raw materials; reading errors on the gauge; and workers do not use personal protective equipment. The solution to these problems are to: build a mistake proofying culture; apply a system of penalties and rewards; provide training in the use of measuring instruments; and give warnings to workers who do not use personal protective equipment.
APPLICATION OF OPINION CLASSIFICATION FOR FASTFOOD RESTAURANT POPULARITY USING INSTAGRAM
Authors: Frinandy Elvandio , Trisnawarman Dedi , Dewayani Ery
Published: December 2020

The purpose of this study is to identify several opinions regarding Instagram account of fast food restaurant in Indonesia. By using a system that can provide the information about the popularity ranking of fast food restaurants, researcher conduct an analysis using Naïve Bayes Classifier. To identify the popularity ranking, researcher collected restaurants data from Instagram, preprocessing text, using Naïve Bayes classification, and implementing the programing. The design of this system be able to determine the popularity ranking of fast food restaurants using collected data (number of likes and comments on Instagram’s post). All of the predictions obtained exceeds of 90%, indicating a fairly accurate prediction of the popularity ranking, where all results almost touch the maximum score. Data collected from the restaurants’ Instagram account, indicating positive results and ratings, based on number of likes and comments per post. The result of this research shows that, Burger King restaurants are the most popular, second is Kentucky Fried Chicken, third is McDonalds, fourth is Hokben, and fifth are Wingstop..
Assembly Line Balancing with The Yamazumi Method
Authors: Ariyanti Silvi , Rifa’i Azhar M. , Yamin Lubis M. Sobron
Published: December 2020

K81 A Cross Comp bracket which is a variant of automatic motor parts that functions as a jog lock, when the motor is refueled. In recent years the number of productions often does not meet the target. For example, the amount of production in March 2019 production results that occur far below the target. This decrease in production amount is due to a gap in the time of the K81 Bracket Cross Comp production process. This is because there is a delay at each work station due to unbalanced cycles of all stations. Based on the background described above, the aim of this study is to improve the line balancing by increasing the efficiency of the track in order to increase the amount of production. The research method used is the Yamazumi method to improve track balance. From the day of improvement of some work elements that have been carried out there has been an increase in line efficiency as fast as 19.14%, thereby reducing idle time and increasing the amount of production.
Co-Working Space with Biophilic Design Approach in Lot.6 SCBD, South Jakarta
Authors: Simarmata C , Gunanta S , Fatimah T
Published: December 2020

The millennial generation is much influenced by the rapid development of technology. The millennial generation grows in the digital age, so that digital technology and systems become inseparable aspects of daily life (digitally native). Technology has influenced the behaviour of the millennial generation, start from socializing, even to productivity of work. Changes in the behaviour of millennial in this technological era have pushed architecture to create a new place with a different type of architecture, known as the third place. The new design makes millennial employees feel relaxed so they can work more productively, a new place that puts forward the principles of informal and open architecture. In this study informal and open architecture have meaning, millennial do not always have to work in space, but in an open or semi-open environment. This new place should have a strategic location, easily accessible, close to shopping malls, workplaces, sports, being in an open space because basically humans have the natural nature to connect with nature, and this goal is obtained through design with a biophilic design approach.
Minimization Total Tardiness in Lathe and Turret Department Using Genetic Algorithm
Authors: Wira Ranata I Gede , Damayanti Dida Diah , Astuti Murni Dwi
Published: December 2020

In recent years the development of manufacture in Indonesia has increase rapidly. Many companies must improve their performance to meet the requirement of the customer needs. Scheduling is an important phase in production. One kind of the problem is scheduling in parallel machine. Total jobs will be processed in the paper are 249 and it divided into 3 types of machine. Every job has their due dates and the problem is some jobs exceed the due dates and make tardiness in some jobs. The total tardiness in the existing scheduling are 8134 hours. This paper set a proposed approach using genetic algorithm to minimization total tardiness in real case factory with a parallel machine type scheduling. The proposed method compared with dispatching heuristic rule EDD and the existing scheduling of the factory. The proposed approach results demonstrate that a genetic algorithm give a better scheduling solution then the EDD rule and the existing schedule. Proposed scheduling using GA can reduce the tardiness becomes 723,97 hours or 91,10% from the existing schedule.
Qualitative Analysis of Maintenance and Operational Management at Abdul Muis Technical Office Building
Authors: Bari Putri Janerizka , A. Simanjuntak Manlian Ronald
Published: December 2020

Building operational management has consistently become a requirement to fulfill, especially for buildings that are enabled for the public interest. The concept of operational management, especially in the maintenance of poor buildings can cause various functions of building facilities will be decreasing and affect the quality and comfort of the building, therefore it is very important for building owners/building users to know the understanding and process of building operational management. This research aims to study about the understanding of operational management and based on research results there are 4 stages of process in operational management, namely review design, planning, organizing, movement and control.
Material Module Technology in Amartapura Apartment, Lippo Karawaci
Authors: Ahyar Wiraguna Sidi , Susetyarto M. B. , Lianto Fermanto , Hendra Siwi Samsu
Published: December 2020

Amartapura Apartment was one of the tallest and luxury apartments in 1987. The building consists of 2 towers with each floor: Tower A consists of 41 floors, and Tower B consists of 51 floors. Located in the elite area of Lippo Village Karawaci Tangerang-Banten, this apartment was developed by Lippo Developer Hyundai Development, which is a Joint Operation company between Lippo Land Development and Hyundai Corporation. This research intends to reveal the application of material module technology from the planning phase to the construction phase to be efficient in construction costs. The quantitative method through literature studies and virtual media, coupled with the personal experience of researchers who are directly involved in the project. Based on what is obtained from the results of research and field conditions, in the planning phase, the planner team did not discuss the use and application of material modules. So in the construction phase required very intense studies, simulations and adjustments related to the material module. To anticipate material waste that will directly affect project costs. This could happen because the number of apartments reached 700 units of bays (for two towers). For example, suppose that in an apartment unit, a ceramic tile is cut, so as a whole, there will be a huge “waste” (700 pieces of the remaining pieces will be discarded). Efficiency in the use of architectural materials (floor materials, walls, work aids/cutting tools) should have been planned and predicted from the beginning ever since the planning phase. So that in the construction phase, things like this will not result in wasteful costs. Considering Amartapura Apartments were built in large numbers.
Assembly Line Balancing Using Genetic Algorithm Method to Minimize Number of Working Stations: A Case Study in Car Manufacturing
Authors: Damayanti Dida Diah , Astuti Murni Dwi , Setyawan Erlangga Bayu , Ramdani Arif Faisal
Published: December 2020

In this competitive era, there are no more manufacturing organizations that want to produce products in large volumes with low variations. The company is now shifting toward the idea of producing more variations that are of interest to consumers. Increased demand and production targets cannot be avoided. however, the increase must be adjusted to the worker’s resources according to their function. If it is not balanced, it will cause a bottleneck on the production flow caused by the operating time at a workstation exceeding the takt time. then we need to balance the assembly line to get optimum and efficient results. Assembly line balancing (ALB) is used to flatten workload on all processes in a cell or value stream to eliminate bottlenecks and excess capacity, with a limitation of slowing down process time and excess capacity. The completion of this case study uses a combination of Priority Rule- Based/heuristic methods and Genetic Algorithm methods.
Safety audit of becakayu toll road
Authors: Shinta Eka Setyarini Ni Luh Putu , Prihatiningsih Aniek , Tanes Kevin
Published: December 2020

Road Safety Audits are an effort to recognize the possible accident Hazards from road infrastructure in traffic and the surrounding environment. Data from this audit was obtained by direct observation on the BECAKAYU toll road. Matters reviewed in this road audit are included: geometric, pavement, markings, signs, and complementary structures. This toll road connected the cities of Bekasi - Cawang - Kampung Melayu. The purpose of this study is to analyze the road’s geometric, pavement, the street furniture and complementary structures of the toll road with a field survey to find out what need to recomend or added. The data obtained in this study will be compared with government regulations, whether they have accorded the regulations or not.
Development of Relationship between Liquid Limit and Clay Content for West Java Soils
Authors: Widjaja B , Kurniawan K
Published: December 2020

Soil is an essential factor in implementing civil engineering construction. Each region has varying characteristics and natural properties of soils, so it needs to be tested. One of the tests to determine those properties, especially fine-grained soils, is the Atterberg limits (i.e., Liquid Limit and Plastic Limit). The fall cone penetrometer test can provide liquid-limit values similar to the other methods (i.e., Casagrande Cup test). The hydrometer test results can determine the soil classification and the amount of clay and silt content. Then, the next step is to establish the relationship between the liquid limit and clay content in a soil sample. This study uses four soil samples with direct laboratory tests and seventeen soil samples from our previous research in West Java, Indonesia. The liquid limit is in the range of 41.46% to 115.80%. Clay fraction ranges from 12.24% to 66.18%. The results show that increasing clay content is followed by increasing the liquid limit in a linear relation. Other relations, such as plastic limit and plasticity index to clay content, show the same tendencies. Then, the results are similar to the other research using soils from England and Kenya.
Decision Support System for Election and Evaluation of Assistant Lecturer Using Analytical Hierarchy Process and Simple Additive Weighting: case study Faculty of Information Technology Tarumanagara University
Authors: Melvin  , Sutrisno Tri , Erny Herwindiati Dyah
Published: December 2020

Decision Support System is a system that is able to solve problems and is able to communicate to problems with semi-structured and unstructured conditions. This paper uses a decision support system using methods Analytical Hierarchy Process (AHP) and Simple Additive Weighting (SAW). AHP method is used to calculate the weight of each criterion, while the SAW method is used to rank each alternative individual. The case study used to conduct a decision support system is the case to decide and evaluate Asistant Lecturer at Faculty of Information Technology Tarumanagara University.
Android-Based Application for Intangible Cultural Heritage in Balai Pelestarian Nilai Budaya Jawa Barat
Authors: Jayson  , Dewayani Ery , Rusdi Zyad
Published: December 2020

The main purpose of this study is to help Balai Pelestarian Nilai Budaya (BPNB) Jawa Barat in preserving the Intangible Cultural Heritage (ICH) in Indonesia. BPNB Jawa Barat manages four provinces in Indonesia namely Banten, DKI Jakarta, Jawa Barat, and Lampung. This Android application aims to disseminate information regarding ICH aspects which includes history, location, maestro, and the distribution of ICH in the four provinces. The method used in application development is the Unified Process which is carried out in several phases, namely Inception, Elaboration, Construction, and Transition. The design of an Android application uses Unified Modeling Language (UML) as an application modeling. The application uses Google Maps API and coordinates stored in the database to display the locations of ICH on the map. The application has been tested using Black Box and User Acceptance Test (UAT) method, and based on the test results it can be concluded that the application can help the user to obtain information about aspects of the Intangible Cultural Heritage.
Quality Control of Steel Deformed Bar Product using Statistical Quality Control (SQC) and Failure Mode and Effect Analysis (FMEA)
Authors: Mislan  , Hardi Purba Humiras
Published: December 2020

The Percentage of steel deformed bar product defect in an Indonesian factory was 0.064% by 2019, where the defect percentage exceeded a limit target set by the company, which is 0.050%. This research used a Statistical Quality Control (SQC) method by applying the Seven Tools to identify the problems that caused defects in the product. The author also applied Failure Mode and Effect Analysis (FMEA) method into the production process to generate solutions for the cause of dominant defect factors. According to the calculated RPN value, the cross defect was caused the most by uncentered between top roll and bottom roll. For scratch defect, the main factor carried by Spindle Carrier that is vibrating during the rolling process. The line defect caused by a worn caliber. By implementing the recommended solution, the percentage of product defects decreased from 0.064% to 0.0075% during March to June 2020.
Analysis the effect of piling activity using diesel hammer on surrounding construction
Authors: Andera  , Prihatiningsih A
Published: December 2020

Construction starts with earth work that takes a long time. To reducing these problems, acceleration is usually done on the site. For example, doing basement excavations at same time with driven piling. Early basement excavation work has the potential to cause the foundation piles that has been driven will be slided. Besides being supported by expansive soil, use of diesel hammer which has large blow energy as driven machine will also affect additional lateral load on the ground which causes pile or wall to slide or roll. In this study, the calculation of additional loads due to piling and soil using Boussinesq and Rankine Theory. The Reese and Matlock Method is used to calculate the lateral deflection of the pile. Pile will experience lateral deflection 30 mm exceeding the permit tolerance of 25 mm. Earth retaining wall with 3,2 m and 6,4 m excavations, the wall does not slide and roll. On the earth retaining wall with 9,6 m excavations, the wall does not slide but it will be rolled. The conclusion of this study is doing excavation when piling work has not been fully completed, it will potentially causing damage to the construction that has been made.
Adventure Game “Detective Adventure” Using Unity Virtual Reality
Authors: Yohanes  , Pragantha Jeanny , Andana Haris Darius
Published: December 2020

“Detective Adventure” is a Virtual Reality game for Android using cardboard. Where the detective must seek clues to reveal a serial killer by investigating crime scene. This game use three-dimensional graphics and virtual reality headset. The game uses a remote Virtual reality to pick up item and move. This game created by Unity game engine with C# as programming language and photoshop to use to make object, and edit image. Testing was done by the the blackbox testing, alpha testing by lecturer, and beta testing by surveying 30 respondens. Respondens show that the “Detective Adventure” is an interesting game to play.
Car shape clustering using sobel edge detection with divisive average linkage and single linkage algorithm (case: bus, sedan, citycar, mpv, and truck)
Authors: Hadi Saputra Victor , Herwindiati Dyah Erny , Sutrisno Tri
Published: December 2020

This study aims to make an application that able to make clustering for car type based on shape by using edge detection and clustering algorithm. The car types being used in this study are the image of the bus, sedan, city car, mpv, and truck. In this study, the method used to classify is with the divisive average linkage and single linkage method. The goal is to prove whether the divisive average linkage and single linkage can be used to classify the shape of the car image correctly. The shape obtained by using the Sobel edge detection method because the Sobel method is an edge detector that has advantages in reducing the noise before doing calculations so that the resulting edges form an image like the original.
Planning and Realization of Learning Modules as Extracurricular Activities of Biped Robot
Authors: Fat Joni , Kristian Denny , Naga Dali S.
Published: December 2020

Biped Robot is a tool that designed in such a way as to have human-like mobility. It has structures like human legs that have joints of legs, knees, and hips. Biped Robot is used as a learning module on extracurricular activities at St. Andreas High School. Extracurricular activities are conducted outside of school hours, which is held 2 weeks, during 8 meetings. The biped robot is able to run forward and the basic material of the robot uses the PLA filament. To personalize it in extracurricular activities, the modules used in the manufacture of biped robots are processing modules, liaison modules, and drive modules. As for assisting learners in making the robot, a practical module is used to guide learners to make it easier for them to understand and create a system for each meeting. Based on the test results, this robot that uses several modules can work well and the biped robot can run forward. In addition, any material submitted at each meeting, more than 60% of the participants of the extracurricular activities already understand every material delivered and overall, more than 80% of the number of learners stated that this extracurricular activities can run well and smoothly.
Smart Street Lighting System with Data Monitoring
Authors: Satria Utama Hadian , Kevin  , Tanudjaja Harlianto
Published: December 2020

Street lighting is required for the safety and convenience of street users at night time. A smart street lighting with data monitoring is proposed and designed in this paper in order to optimize the use of the street lamps, i.e. more effective and efficient. The system checks the sunlight brightness condition to determine when the system will start working since it is not needed on daytime. The sidewalk and vehicle sensors start working on night time, checking the pedestrian and traffic condition. If any vehicles on the street or any activities on the sidewalk are detected then the closest street lamp will be at its maximum brightness level. The farther from the detecting sensors they are, the lamps will be dimmed or turned off completely. Information on the public street condition can be monitored using a smartphone application. The application also displays temperature and humidity of the surrounding area, which is useful for the public street management. The result proves that the smart street lighting system works exactly as designed and required.
Application of Recommendation Medical Specialty Doctors Based on User Symptoms Using the C4.5 Method and K-Nearest Neighbor
Authors: Hendri  , Christanti Mawardi Viny , Naga Dali S.
Published: December 2020

This paper is about web based application of recommendation medical specialty doctors based on user symptoms using the C4.5 method and K-Nearest Neighbor. Classification is the process of grouping things based on classes with the characteristics of similarities and differences. This objects or entities are labeled as user symptoms. User symptoms are classified and produce a category of doctor that matches the user’s symptoms. This application will be using sample data from ascertain the opinions and experience of Doctor Yohannes Cahyadi who practices at the Griya Kasih Indah Clinic and from the website alodokter, hellosehat, docdoc.com, cicendoeyehospital, and the eye clinic nusantara. The purpose of making this application is to choose the right specialist doctor based on human symptoms or medical need. The test results obtained said that the best classification accuracy is to use the K-Nearest Neighbor method with an accuracy value of 100%, this shows that the use of the C4.5 method and K-Nearest Neighbor can provide recommendations for the right doctor with user symptoms.
Utilization of Apriori Algorithm for Book Layout Design in UNTAR Library
Authors: Sumarly Varyan , Arisandi Desi , Sutrisno Tri
Published: December 2020

The library is an important tool in supporting students in teaching and learning activities at various levels of education. The library provides various sources and information that serve as guidelines in the distribution of knowledge that can be applied in social life. Not only for students, library is also beneficial for the wider community as a learning tool that can be useful for daily life. This is not immune from the proper application of book literature. Placement of book literature which is used as a guide for information sources greatly influences the application of these sources.

Along with the rapid development of technology, it facilitates activities and jobs that can support human life, one of which is library facilities. The development of technology in placing book literature which is commonly used as a guideline for information sources is based on a combination of book literature which is often used. Placement of book literature utilizes methods that can help determine the right combination of book literature such as the Apriori Algorithm. The use of Apriori Algorithm in determining the right combination of book literature will facilitate the design of book layout in the UNTAR Library.

The combined results of the book literature from the Apriori Algorithm serve as a guide in designing book layouts in the UNTAR Library. Apriori algorithm produces 100% confidence value. This proves that the use of Apriori Algorithm is very effective in designing the layout of books in the UNTAR Library.
Strength simulation of power window panel components design using ABS material
Authors: Allvian Santoso Octavius , Purna Irawan Agustinus , Djamil Sofyan , Raditya Danendra Albertus
Published: December 2020

This study aims to simulate the strength of the design of car power window panel products using ABS plastic material. Strength obtained from this simulation will be used as a reference in the development of power window panel products in cars using bamboo fiber composite materials. The method used is to design the power window panel components and simulate loading using software. The results of strength simulation using software show that the strength of ABS plastic material produces good strength with loads 250 N, 500 N, 750 N, and 1000 N. The simulations produce data on safety factors, Von Mises, first principal, third principal and displacement. These results become a reference in the development of further power window panel components.
Simulation and Study of Shell and Tube Type Heat Exchangers
Authors: Andriawan  , Tanujaya Harto , Riza Abrar
Published: December 2020

Design of the shell and tube heat exchanger using comsol multipyhiscs application. The calculation of the dimensions of the heat exchanger aims to determine the quality of the heat exchanger based on the overall heat transfer coefficient, impurity factor, and the pressure drop that will occur. The heat exchanger that is made and designed is a shell and tube type heat exchanger 1 (one) pass shell and 1 (one) pass tube made of stainless steel 304 and copper with fluid flow in the form of air and water. The analysis results obtained that the heat exchanger that is designed already meets the requirements of the effectiveness coefficient of the baffle, understands the factors that exist in the shell and tube type of heat exchanger and understands the factors that affect efficiency and effectiveness.Calculations using the LMTD method, obtained that receive heat released has a large unity with time Q, then the heat received by cold fluid is Q = 4565.16 W, LMTD produced also shows the number 20, with a proven factor (F) is 1. Reynolds Number of the tube side is greater than shell side.
Determination of minimum stock on system retail using forecast, economic order quantity and reorder point methods
Authors: Heaviside Michael , Mulyawan Bagus , Sutrisno Tri
Published: December 2020

In a globalization era, where retail business competition is getting tougher, a retail business has to have more advantages such as competitive selling prices, stock availability and others. In order to have competitive selling prices, a retail business should be able to arrange planning regarding goods availability to maintain balance between demand and existing stock (supply). The need for information on the availability of stock of goods in accordance with the sales that occur becomes very important. It is needed to avoid the goods accumulated excessively in the warehouse or even shortage of goods. If this kind of information about stocks both in a warehouse or the one that has been sold does not properly provided, it can cause reduction on the company’s profit because it can lead to more expenses on buying other goods as guessing that the stock of certain goods are running low or even more miscalculating to buy more goods that is actually still on the warehouse with sufficient quantities. These kind of situations were often occurred when a retail business do not have a tool to ensure the estimated purchase of stock needed for a certain period of time during selling. Therefore, it is required a system to help facilitate companies in carrying out retail business activities by using the Forecasting Method to help estimate quantitatively what will happen in the future with the stocks, based on relevant data in the past. In accordance with the results of the identification of demand patterns, the Forecasting Method used is Moving Average (MA), Weighted Moving Average (WMA), Single Exponential Smoothing (SES) and Double Exponential Smoothing (DES). After Forecasting, the best Forecast Method which has the lowest Mean Absolute Deviation (MAD) selection is made. This Economic Order Quantity (EOQ) method helps to determine the optimal purchase frequency. Through determining the optimal number and frequency of purchases, then optimal inventory control is obtained. The Reorder Point method can be used to find out what the minimum point is to be able to order a stock back, so that it is expected that the amount of stock that is not excessive and can meet sales needs optimally.
Investigation on the Micro Hydropower Undershot Type Floating Blade Tilt Angle for Low-flow Hydropower
Authors: Setyawan Eko Yohanes , Djiwo Soeparno , Saputro Sandi , Napitupulu Richard A. M , Siagian Parulian , Panjaitan Joel , Litiloly Rochani
Published: December 2020

Many rivers or streams of water around us can be used for energy. River flow is very promising to be utilized as much as possible in producing electricity. Potential energy from small river fluid flow or irrigation can be extracted into electricity that can be utilized. This research can be used as one of the references in varying the angle of inclination at the blades at 15°, 30°, and 45°. From the analysis of experimental results, the greatest efficiency obtained is 11.14% with an angle of 30° with turbine power of 104.62 watts. This is followed by the lowest efficiency at a slope angle of 45° with turbine power of 111.49 watts with an efficiency of 10.73%. From the highest and lowest results there is a slight difference in the value of efficiency which is classified as low. This is caused by differences in density causing water to pound on the blades made of acrylic with an iron frame to become heavy and friction on the v-belt and pully. Therefore, the rotation cannot produce the maximum transmission.
Implementation of Improved Apriori Algorithm for Drug Planograms in XYZ Pharmacies and Analysis of Medicinal Procurement Planning Using ABC Critical Index Methods
Authors: Pratama Aldy , Mulyawan Bagus , Sutrisno Tri
Published: December 2020

In conducting transactions in the present era where people no longer carry out transactions manually, where now there is modern technology, so that it can make it easier to conduct transactions, such as pharmacies. Pharmacy owners can now put their medicines in a position that matches the combination of goods sold and can also conduct an analysis of drug procurement planning. Improved Apriori Algorithm Method is one of the methods to assist in finding the combination of goods most often purchased by transforming data into a matrix and then cutting columns and rows according to the minimum amount of support specified and the iteration values that are ongoing, then displaying the results of the combination that is in accordance with the specified minimum confidence and the ABC Critical Index Method to analyze the critical stock procurement planning using the use value, investment value and VEN value to calculate the critical index value for each drug, after which each drug will be included in each class vary based on the level of drug sales. The results of testing manual calculations and programs obtained on 101 drug data and 64 transaction data in the Improved Apriori method are 4 drugs that can be combined with a predetermined minimum confidence value of 100%. Then in the Critical Index ABC method there is a percentage of drugs that go to group A is 17.82%, Group B is 66.34% and Group C is 15.84%.
Application of the case based reasoning & sorensen-dice coefficient method for fitness exercise program
Authors: Salim Dodi , Perdana Novario Jaya , Mulyawan Bagus
Published: December 2020

Fitness Training Program Recommendation is a web-based system using C # language and SQL Server database that can help find the results of fitness training program recommendations for system users. The making of this application aims to recommend a fitness training program in accordance with input data that are considered attributes in the selection of fitness training programs, gender, age, weight, height, sports activities, and muscle specialization. The making of this application uses the system development method of system development life cycle and the process of selecting an exercise program using the case based reasoning method with the stages of retrieve, reuse, revise, retain and rule base methods to determine the results of a more optimal fitness training program recommendation. The results of testing the fitness exercise recommendation system programs that are based on the user as a whole shows 51.14% of respondents stated strongly agree, 40.19% of respondents agreed that the system was able to recommend a fitness training program and provide information needed by the user.
Experimental analysis of invitro biocompatibility of nano modified titanium alloys and stainless steel
Authors: Bubesh Kumar D , Imthiyas A , Midhu Dev P , Valiyavalappil Shaheen , Sreehari P
Published: December 2020

The aim of this paper is to conduct an experimental analysis in invitro biocompatibility of nano modified titanium alloys. The titanium alloy was etched with sulfuric acid and hydrochloric acid above 200oC. The biocompatibility study was carried on the modified titanium plate. The cell culture was carried out the results are expressed as the number of attached cells to the unit surface of the material of the plastic culture plate. SEM analysis and DNA isolation and electrophoresis were carried out. Modified titanium shows more cell attachment. Innovation carried out in this research is the fabrication of porous material using white gold alloy. White gold alloy was prepared by nanoscale modification of surface by acid etching. Nonporous are seen on the surface. The SEM, EDAX analysis confirms the modifications of the surface by acid etching.
RETRACTED: Performance analysis of ceramic hybrid lubricant
Authors: Kumaran P. , Praveen R. , Sajeev Dhanush P , Ashwanth C K , Jithu G. S.
Published: December 2020

The aim of the present work is to synthesize and analyze the mechanical properties of a semi solid engine lubricant which is made up of graphite and kaolin as major constituents which are mixed with CNSL (Cashew Nut Shell Liquid) lubricant as the resin. A normal engine lubricant needs to be drained in an average time interval of 3000kms or 6 month time periods since it loses its properties. A very large quantity of engine oils and coolants are disposed in each service station as waste during each day. So it is necessary to increase the durability of lubricant without losing its properties. The heat dissipation properties, viscosity, thermal conductivity, adhesiveness, wear resistance, etc. of this lubricant is also analyzed and studied.
Performance Test of Tyre Pyrolysis Oil in Different Blended Ratio with Diesel
Authors: Prakash S. , Prabhahar M. , Thiagarajan C. , Amith A. , Mohanbabu S.
Published: December 2020

Waste tyre involves natural issue that is some were pre arranged illegally in open terrains, at last causing an environmental issue. Pyrolysis is one of the significant strategies for reprocess of scrap Tyres by utilizing gases, steel wires and Carbon dark. The fundamental inconvenience in utilizing Tyre Pyrolysis Oil (TPO) as a vitality source is unpredictable in its synthetic arrangement. The following results gives about the methods of oil can be effectively take benefit. 1.5 Litre of TPO gives 350 ml of distilled oil at temperature of 200-270°C. The TPO has viscosity, high fire point and high pour point. The methanol to diesel proportion of 10:90 showed the most reduced fumes temperature and accomplished an improvement in the yield intensity of roughly 70% contrasted with different proportions. Additionally, the brake warm proficiency improved at all the blending proportions utilized. Moreover, the BSFC of unadulterated diesel fuel enrolled a lower an incentive than some other blending proportion. It has been appeared in this examination that the expansion of 10% methanol to the diesel fuel may greatly affect the motor execution and the earth.
Investigation of Mechanical Properties and Characterization of Hybrid Natural Fibre Polymer Matrix Composites
Authors: Saravanan M , Prakash S , Gnana Prakash S , Akshaykrishna M , Aswin Subhash S
Published: December 2020

Over the past decade, the perception of utilizing Natural fiber has come to be more main stream. Natural fibres are the best substitute with the growing environmental consciousness, which act as an alternative for synthetic fibers due to their promising properties. New cellulosic fibers were identified from banyan bark. This study targets at understanding the components of ficusbenghalensis extracted from the bark of the banyan tree and its mechanical properties. Here, we construct three types of plates. One set of plates is equipedd by random orientation process another set of plates by unidirectional orientation and the third plate by orientation of bi-directional tests. The mechanical properties are going to inhibit tensile and impact. The flexural test is directed at these plates. We can select high strength plate among them with the support of those tests’ results, and by comparing those plates.
Integration of Total Quality Management with Total Productive Maintenance to develop Maintenance Quality Function Deployment model and its implementation study in food industry
Authors: Johnson Jeffin , Pramod V. K.
Published: December 2020

In today’s modern and highly competitive world, the quality of products as well as the quality in maintenance is of great importance. For that, the involvement of customers is very necessary. To convert these customers’ vague languages into technical data, a tool called Quality Function Deployment (QFD) is available in Total Quality Management (TQM). But in order to have quality in maintenance, no such tools or techniques are not available in Total Productive Maintenance (TPM) model. So, a model called Maintenance Quality Function Deployment (MQFD) was developed by incorporating TQM with TPM. Model study was carried out in a food industry; especially in an ice cream industry and suggested action plans for the implementation process for the quality enhancement was done through this study. Details about the machineries involved in the making of the food have been collected and processed for TPM parameter calculations. In food industry the MQFD model is not implemented yet. So, a model study in the food industry is very much useful especially in an ice cream industry due to the fact that, it is one among the most consumed food product all over the world.
Recent developments in Al7075 hybrid composites and study on its microstructure and mechanical characteristics
Authors: Johnson Jeffin , Raja R.
Published: December 2020

Hybrid composites are formed by incorporating more than one reinforcement into the parent alloy and these are considered to be one of the significant materials used for aerospace, automobile, defence applications. Even nano hybrid composites are also evolving as materials to be considered with prominence. Aluminum metal matrix hybrid composites especially Al7075 hybrid composites are known for superior strength to weight ratio and good wear resistance, that's why those are considered as most useful materials in the field of mechanical applications. Ease of manufacturing, low cost of production paved the way for aluminum hybrid composites to emerge itself in to one of the potential material for future applications in aerospace, automobile, defence sectors. In order to develop aluminum hybrid composites several reinforcements were been added along with the metal matrix. Reinforcements enhance the mechanical, physical and micro structural characteristics of the hybrid composites. Mechanical properties would get enhance with varied wt % of reinforcements. This article provides an overview on recent developments on aluminum metal matrix hybrid composites.
Review of Biomechanical Characteristics of Illizarov Ring Fixators Using FEA
Authors: Bubesh Kumar D. , Vijayakumar K , Abhinesh  , Martin Alen V , George Rahul
Published: December 2020

Review of Biomechanical Characteristics of Illizarov Ring Fixators Using Finite Element Analysis (FEA) of implants and fixators were carried out. Various illizarov fixators used for fracture fixation and lengthening of bones were reviewed. The illizarov ring fixators were modeled and analyzed using ANSYS Workbench FEA software. The research gap was found after the review. In this review biomechanical characters of various researchers were studied, the various configurations of the illizarov fixators were studied. The mathematical model gives the use mathematics in analyzing the various fixarors; it was reviewed in this paper. Invivo and invitro and the tests conducted by various researchers were carried out. It is concluded that the titanium implants are have youngs modulus equivalent to human bone and it has rigidity and strength which is very much required for the treatment of the bone fracture.