bluuebunny/crossref_metadata_2025 huggingface dataset:
Disput o petih paradoksih »poezije stranišča« s prologom in epilogom
Authors: Kozak Krištof Jacek
Published: August 2023

Among the works of Taras Kermauner, probably the biggest expert on Slovenian drama and its first theoretician, one can also find a single dramatic experiment: a courtroom debate on the value of avant-garde poetry, based on the case of the accusation against the poet Tomaž Šalamun. While Kermauner develops the genre of judicial disputation in a theatrically fitting and interesting way, he undermines the disputation with an anticlimactic, anti-dramatic conclusion that postpones the decision on the matter to another space-time. A closer examination of the text reveals several conceptual inconsistencies that can be better understood as paradoxes. Thus, the five points that might be defined as paradoxical could be traced in the text itself concerning substantive categories such as the essence of art, the meaning of a nation for art, art and Marxism, and life as the supreme aesthetic category, while the last paradox is a more formal one, since the courtroom debate, with its conclusion, does not reach any point whatsoever. Regardless of the sufficiently clear and pointed presentation of the positions of the two protagonists, the Prosecutor and the Defender, Kermauner decides, rather than escalating the conflict to a (theatrical) climax, to dilute the disputation based on the inclusion of the audience and the conclusion that the latter, in its role as jury, cannot decide for either side. The (dis)solution of the dilemma of the (national, artistic) quality of avant-garde poetry is thus left – despite the fireworks of Kermauner’s theatrical courtroom debate – to the future and literary theory.
Nemi liki: dramatičarke, ženska pisava in reprezentacija žensk(osti) v slovenskem dramskem eksperimentu (1966–1986)
Authors: Leskovšek Nika
Published: August 2023

The paper begins by analysing the ideas, themes and motifs of the theatre texts from the anthology The Generator:: for Manufacturing Any Number of Drama Complexes (Slovenian Experimental Dramatic and Performative Texts from the Modernist Period (1966–1986)). It aims to shed light on the anthology’s selected texts through the female perspective, or rather, its absence. It deals with the consequences that the absence of awareness about the lack of a female perspective in Slovenian drama can have on the representation of women and woman(liness). The paper explores such representations in Slovenian (experimental) drama and raises awareness about the possible effects of patriarchal ideology and its consequences by analysing the plays’ ideas, themes and motifs. In doing so, it pays special attention to the difference between men’s and (rare) women’s playwriting. The texts from The Generator are taken merely as a case study to indicate the presence of particular symptoms in Slovenian (experimental) drama within the anthology’s given period. The paper briefly highlights the differences in the representation of woman(liness) from a broader developmental perspective, from a temporal distance, in the form of a comparative analysis of contemporary women’s playwriting, specifically, Simona Hamer’s 2010 play Nemi lik (The Silent Character).
Performance Writing
Authors: Jakovljević Branislav
Published: August 2023

While the emergence of new forms of performance writing in the 1960s and 1970s did not eliminate traditional forms of drama, they radically transformed the role of textuality in the theatre. This article argues that when liberated from the rules of dramatic writing and even syntax and grammar, performance writing brings an illocationary logic into textual production. The article concludes with a preliminary consideration of differences between experimental writing strategies and the latest text-generating AI.
Insights of warm-cloud biases in Community Atmospheric Model 5 and 6 from the single-column modeling framework and Aerosol and Cloud Experiments in the Eastern North Atlantic (ACE-ENA) observations
Authors: Wang Yuan , Zheng Xiaojian , Dong Xiquan , Xi Baike , Yung Yuk L.
Published: August 2023

Abstract. There has been a growing concern that most climate models predict precipitation that is too frequent, likely due to lack of reliable subgrid variability
and vertical variations in microphysical processes in low-level warm clouds.
In this study, the warm-cloud physics parameterizations in the singe-column
configurations of NCAR Community Atmospheric Model version 6 and 5 (SCAM6
and SCAM5, respectively) are evaluated using ground-based and airborne
observations from the Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Aerosol and Cloud Experiments in the Eastern
North Atlantic (ACE-ENA) field campaign near the Azores islands during
2017–2018. The 8-month single-column model (SCM) simulations show that both SCAM6 and SCAM5 can
generally reproduce marine boundary layer cloud structure, major
macrophysical properties, and their transition. The improvement in warm-cloud properties from the Community Atmospheric Model 5 and 6 (CAM5 to CAM6) physics can be found through comparison with the observations. Meanwhile, both physical schemes underestimate cloud liquid
water content, cloud droplet size, and rain liquid water content but
overestimate surface rainfall. Modeled cloud condensation nuclei (CCN)
concentrations are comparable with aircraft-observed ones in the summer but are
overestimated by a factor of 2 in winter, largely due to the biases in the
long-range transport of anthropogenic aerosols like sulfate. We also test
the newly recalibrated autoconversion and accretion parameterizations that
account for vertical variations in droplet size. Compared to the
observations, more significant improvement is found in SCAM5 than in SCAM6.
This result is likely explained by the introduction of subgrid variations
in cloud properties in CAM6 cloud microphysics, which further suppresses the
scheme's sensitivity to individual warm-rain microphysical parameters. The
predicted cloud susceptibilities to CCN perturbations in CAM6 are within a
reasonable range, indicating significant progress since CAM5 which produces an
aerosol indirect effect that is too strong. The present study emphasizes the
importance of understanding biases in cloud physics parameterizations by
combining SCM with in situ observations.
ESD Ideas: A 6-year oscillation in the whole Earth system?
Authors: Cazenave Anny , Pfeffer Julia , Mandea Mioara , Dehant Veronique
Published: August 2023

Abstract. An oscillation of about 6 years has been reported in Earth's fluid
core motions, magnetic field, rotation, and crustal deformations.
Recently, a 6-year cycle has also been detected in several climatic
parameters (e.g., sea level, surface temperature, precipitation, land
hydrology, land ice, and atmospheric angular momentum). Here, we suggest that
the 6-year oscillations detected in the Earth's deep interior, rotation, and
climate are linked together and that the core processes previously proposed
as drivers of the 6-year cycle in the Earth's rotation additionally cause
the atmosphere to oscillate together with the mantle, inducing fluctuations
in the climate system with similar periodicities.
Analysis of Threshold Voltage of Biaxial Strained Silicon nMOSFET
Authors: Joshi Garima , Balmukund Rahi Shiromani
Published: August 2023

For nanoscale CMOS applications, strained-silicon devices have been receiving considerable attention owing to their potential for achieving higher performance and compatibility with conventional silicon processing. In this work we present the analysis of effect of strain on threshold voltage of biaxial strained-Si/Si1-x Gex nMOSFET taking into consideration the quantum mechanical effect (QME).
Improving Profitability through Value Engineering: A Case study
Authors: Desai Darshak A.
Published: August 2023

Value Engineering is a function-oriented technique that has proven to be an effective management tool for achieving improved design, construction, and cost-effective solution for many engineering problems. It is one of the most effective techniques known to identify and eliminate unnecessary costs in product design, testing, manufacturing, construction, operations, maintenance, procedures and practices. This paper is an attempt to highlight the application of value engineering techniques towards profitability improvement. The paper discusses a case of fabrication industry mainly dealing with different security cabinets. The paper illustrates how the value engineering efforts resulted into the positive impact on the profitability of the company.
Study of V2V Communications on Mumbai-Pune Express Highway
Authors: Khairnar Vaishali D. , Pradhan S. N.
Published: August 2023

This paper presents a detailed study of short range communications between vehicles in a realistic Mumbai-Pune Express (MPE) highway scenario. This paper will show the expected wireless communication characteristics in a vehicle driving environment and identify the factors that significantly affect V2V communication performance. It is also illustrated to broadcast different emergency messages according to the different factors identified (e.g. whether, road condition, vehicle traffic emergency message to avoid collision etc.).
Structural Properties of Anode Composites Precursor of A Solid Oxide Fuel Cell Prepared Via Combustion Synthesis Route
Authors: Kalra Pankaj , Garg Rajeev , Grover Neel Kanth , Kumar Ajay
Published: August 2023

Solution combustion technique was used for the preparation of NiO-CGO (Ceria Gadolinia Oxide) composites – a precursor to SOFC anode by mixing cerium nitrate, gadolinium nitrate and nickel nitrate in stoichiometric ratio to form a precursor of composition Ce0.90Gd0.10O1.95 – 0.40 NiO. The concentration of oxidant i.e. glycine, was varied between 0.5 to 1.6 mole% and its effect was studied on the crystallite size and agglomerate of resulting NiO-CGO composite. The products formed were characterized by X-Ray Diffraction, Scanning Electron Microscope and Particle Size Analyzer. The results showed that the composite precursor varied in combustion characteristics, crystallite size and agglomerated particle size depending on the concentration of the fuel.
Stability of Journal Bearings Considering Slip Condition: A Non Linear Transient Analysis
Authors: Raghunandana  , John  , Kanthraj
Published: August 2023

The no-slip boundary condition is the foundation of traditional lubrication theory. For most practical applications the no-slip boundary condition is a good model for predicting fluid behavior. However, recent experimental research has found that for special engineered surfaces the no-slip boundary condition is not applicable. In the present study the non linear transient analysis of an engineered slip/no-slip surface on journal bearing performance is examined. Numerical Analysis is carried out by solving the modified Reynolds equation satisfying the boundary conditions using successive over relaxation scheme in a finite difference grid which gives the steady state pressure. An attempt is made to evaluate the mass parameter (a measure of stability) besides finding out the steady-state characteristics of the finite journal bearing.
Interconnection of Modules of Reconfigurable Modular Robots: A Review
Authors: Kumar Pardeep , Sidhu Buta S.
Published: August 2023

Robots normally perform pre-specified tasks in a predictable environment, like that on shop floor. Normally, assembly-line like operations are performed by robots due to geometrical and programming constraints. Rapidly changing requirments at customer level has greatly influenced the manufacturing technology, due to the risk of obsolescence. Multiple small robots called modules, interconnect with each other its own, to make a great structure are called self reconfigurable modular robots. For few modules, a large number of configurations are possible. As per the level of difficulty of the task, it can take any shape, to complete the work. Each module of the modular robot has its built-in intelligence with separate memory, connection assemblies, detectors and actuators to operate it. Such robots are highly useful in remote operations, especially in hostile environments. For physical docking of the connection plates of the modules, the connection plates should be properly aligned towards each other. This review paper enlightens the capabilities of the modular reconfigurable robots and the techniques explored by some researchers in this field, for proper alignment of the connection plates, for physical docking of modules. Position sensors like hall-effect sensors; and proximity sensors like infrared (IR) detectors and emitters have been used for docking of connection plates of the modules. Controlling and coordinating modules to work together effectively and not collide or otherwise interfere with each other is a bottleneck in this concept. Some work using IR intensity to guide the alignment of the modular robots have already been undertaken. Possibility for the use of MatLab by Mathworks is explored to simulate the alignment for interconnection of Modules of Reconfigurable Modular Robot using data captured by the CCD camera through image recognition.
Analysis for the Manufacturability of Mechanical Parts and its Functionality
Authors: Virdi Roshan Lal
Published: August 2023

There is always a gap between manufacturing sector and designer. Designer creativity fails at the shop floor due to manufacturing constraints. In traditional design process designer designs a product and it goes to the shop floor for production. In most of the cases either designer has to redesign the product or manufacturing engineers modified the design as the designer creativity cannot be manufactured due to manufacturing constraints. There is no reconciliation of process capabilities with design requirements. It will consume a lot of time to launch the product, which increases the lead time and also consume some revenue. Design for manufacture the methodology through which products are designed by taking manufacturing constraints in mind during design stage to reduce the lead time. Those who reduced the lead time will capture the market. In this paper an effort has been made for computer aided design for manufacture tool which can help the designer to improve the quality and design of the product at early stages .With this tool we can decide at early stage that whether this product is manufacturable with present manufacturing operations. After evaluating the manufacturability, designer may have more than one option i.e. there are different ways to manufacture it but he has to suggest the best without effecting the quality and cost. Designer can check its functionality by comparing it with the features of the rival products. Most of the products fail to satisfy the customer in terms of its function, cost and quality as the customer always wants more features with same price and quality i.e. designer creativity should match the customer’s requirements with respect to its functionality also. This tool will provide enough information to the designer about the manufacturing constraints, dimensional constraints, and their functionality.
Characterisation of 80% Cr3c2 – 20 % (Ni-20cr) Coating and Erosion Behaviour
Authors: Bhatia Rakesh , Singh Hazoor , Sidhu Buta Singh
Published: August 2023

80 % Cr3C2 – 20 % (Ni-20Cr) powder composition was used to generate coating on T-91 boiler tube steel using high velocity oxy fuel (HVOF) process. This paper focuses on characterization of the coating and will also investigate the mechanism of erosion at different operating temperatures. Microstructure, porosity, surface roughness, coating thickness and microhardness properties of the coating were characterized using the optical microscopy, X-ray diffraction, scanning electron microscopy/energy-dispersive x-ray analysis and electron probe micro analysis techniques. The 80% Cr3C2 -20% (Ni-20Cr) coating possesses thickness 325 μm, surface roughness value 5.206 (Ra), average microhardness value 862 Hv and 1.8% porosity. The uncoated and coated samples were tested in air jet erosion test rig for enhancing the life of boiler tubes and improving the performance of the power plants.
Indexing Genome with the External Construction of Compressed Suffix Tree Using LCP Array
Authors: Vishwakarma Vijay Kumar , Srivastava Abhishek
Published: August 2023

We are proposing the genome indexing algorithm, which depends upon compressed form of suffix trees, in which every node has four parts; suffix array number, suffix start number, LCP count, and a pointer to another node. The proposed algorithm does not use the whole suffix array, it just takes some necessary information like LCP of two suffix array, compare them and suffix start number, to align the suffix to proper position and suffix array number to distinguish among all the partitions. The use of compressed suffix array minimizes the number of trees, eventually; it also minimizes the random access to input data, as it creates the compressed suffix tree for two suffix arrays using pairwise sorting, sequentially.
Application of Synthesised Zeolite A from Kankara Kaolin for Solar Adsorption Refrigeration
Authors: Amber Ityona , Folayan Clement O. , Suleiman Rekiyah B. O. , Atta Abdulazeez Yusuf
Published: August 2023

This paper presents the synthesis, characterization and application of a synthesised Zeolite A from Nigerian clay (kankara) for application in solar adsorption refrigeration.On the basis of X-ray diffraction, TGA and DTA experiments Zeolite A was confirmed with and adsorption capacity of 0.3 kg adsorbate / 0.85kg adsorbent, regenerative temperature of below 2000C and structural stability below 8000C. The refrigeration system used in the test consists of a 0.6 by 0.45 m2 parabolic trough concentrator, 0.6m long and 0.25m diameter black coated absorber, an air cooled condenser and cooling box of volume(evaporator) 0.048m3. The refrigerator was constructed and tested at the Mechanical Engineering Department Zaria, Nigeria at location 11.11’NE in the month of April, a month with one of the highest of average solar irradiation of 900W/m2. The lowest evaporator temperature attained was 9.80C with a C.O.P of 28.5%.
Characterisation of Biodiesel Derived From Waste Cotton Seed Oil and Waste Mustard Oil
Authors: Singh Sandeep , Sharma Sumeet , Mohapatra S. K. , Kundu K.
Published: August 2023

Biodiesel, an alternative fuel is derived from the fats of animals and plants. As energy demand increases and fossil fuels are limited, research is directed towards alternative renewable fuels. Properties of waste oil (cotton seed oil and mustard oil) have been compared with the properties of petrodiesel, showing a comparable regime for satisfactory optimized blend which is to be selected for the better performance of a C.I. engine with biodiesel. The work presented in this paper is the study of characteristics of biodiesel prepared from vegetable oils (waste cotton seed oil and waste mustard oil). The characteristics of biodiesel are to be checked at different blends(B10, B15, B20) and select the optimum blend based on these characteristics. The characteristics include free fatty acid value, density, viscosity, flash point and fire point, cloud point and pour point, carbon residue content and ash residue content.
Process Capability Analysis of MMC Prepared by Combining FDM, Vacuum Moulding and Stir Casting
Authors: Singh Rupinder , Singh Sardar
Published: August 2023

There has been a critical need for development of cost-effective aluminum (Al) based metal matrix composites (MMCs) for various industrial applications. But hither to no work has been reported for process capability analysis of Al based MMC prepared by combining fused deposition modelling (FDM), vacuum moulding and stir casting process. In the present work an approach to macro-model the hardness of Al based MMC have been proposed and applied for process capability analysis. The relationship between hardness and other input parameters have been deduced by using Taguchi technique L9 orthogonal array. The result of study indicate that value of process capability indices is greater than 1 for the MMC developed by combining FDM, vacuum moulding and stir casting process. Hence the process can be used for commercial batch production activities.
Experimental Investigation of Fluid Flow and Heat Transfer in Microchannels
Authors: Sharma Rajesh , Singh Balkar , Jadon Vijay Kumar
Published: August 2023

An experimental investigation was conducted to explore the characteristics of fluid flow and heat transfer in rectangular microchannels using water as a working fluid in single-phase flow. The micro channels considered having width of 350 microns; with the channel depth 2.5 mm. Test piece was made of copper and contained twenty three microchannels in parallel. The experiments were conducted with water, with the Reynolds number ranging from 375 to 2000. Numerical predictions obtained based on a classical, continuum approach were found to be in good agreement with the experimental data, suggesting that a conventional analysis approach can be employed in predicting heat transfer behavior in microchannels of the dimensions considered in this study.
Optimum Design Parameters for Heat Transfer from Triangular Fin Array within a Rectangular Enclosure
Authors: Das Debasish , Dwivedi Ankur , Gupta Swati
Published: August 2023

This article outlines the evaluation of optimum parametric design for heat transfer analysis through triangular fin array within a vertically oriented rectangular enclosure using general full factorial design approach. This statistical approach has been applied to the conclusions of an experimental analysis conducted to explore the effects of fin height (L), fin spacing (S) and Rayleigh number (Ra) on free heat transfer from triangular fins attached to the heated bas plate within an air filled rectangular enclosure. The analysis of variance (ANOVA) technique has been used to find the significant effect of control parameters on response. The control parametric combination L=37.5 mm; S= 50mm; and Ra=773410 has been reported as the optimum parametric combination yielding maximum heat transfer rate for present study.
Simultaneous Optimization of Multiple Quality Characteristics in Traveling Wire Electrochemical Spark Machining of Pyrex Glass
Authors: Bhuyan Basanta Kumar , Yadava Vinod
Published: August 2023

A new way of promising hybrid process called as Traveling Wire Electrochemical Spark Machining (TW-ECSM) process which combines the characteristics of Electro-chemical Machining (ECM) and Wire Electrical Discharge Machining (WEDM) and uses for machining of electrically non-conductive materials. In this paper the simultaneous optimization of multiple quality characteristics during TW-ECSM of Pyrex glass has been presented using Taguchi method (TM). The experiments were conducted using L27 orthogonal array (OA) considering five process parameters such as applied voltage, pulse on-time, pulse off-time, electrolyte concentration and wire feed velocity and two performance characteristics namely material removal rate (MRR) and kerf width (Kw). The purpose of analysis of variance (ANOVA) is to investigate which input process parameters significantly affect the performance characteristics. Experimental results have shown that machining performance in the TW-ECSM process can be improved effectively through this approach.
A Study on the Effect on Fuel Economy of a Two Wheeler by on Board Hydrogen Generation
Authors: Singh Gurpartap , Singh Kanwarpreet , Singh Harpreet
Published: August 2023

Considering high fuel prices, limited petroleum reserves and expanding market of two wheelers in India, an experiment was performed to investigate fuel consumption of a two wheeler running on hydrogen-gasoline blended fuel. A 2002 model two stroke, single cylinder SI engine Bajaj scooter was used for the research experiment. A little modification was done to the vehicle as per requirements and a hydrogen generation kit was installed to supply hydrogen on-board. Another unmodified vehicle of same model and manufacturing year was used for comparison. At about constant speed of 1500 rpm, fuel consumption of the vehicle was recorded. The test results showed that the modified engine with hydrogen- gasoline blend as a fuel consumed 60% less gasoline as compared to a similar vehicle in which same quantity of fuel was supplied.
Location Detection and Time Monitoring System for Moving Object
Authors: Sheelwant Nirupama , Sheelwant Sandeep.
Published: August 2023

Location tracking and updating are the fundamental issues in the moving objects. Object’s moving efficiency and location detection accuracy are taken into account in the project. The client sends the queries to the server based on the proper result. The server sends the reply to the client maintaining its accuracy as well as efficiency. Main strategies are to update the client request with the exact result. The advantage of this is the flexibility and ability to optimize the efficiency and also updating location of the moving object. We developed a system of high efficiency and accuracy to detect the exact location and also location updating technique for moving object.
Healthcare Measurement of ECG and Body Temperature Signals Using Android Mobile
Authors: Navaneethan V. , Kavitha R.
Published: August 2023

This project is a step towards the preventative healthcare for cardiac patients. It seeks to develop a smart mobile ECG monitoring system that continuously monitors what is happening around the subject when an arrhythmia event occurs. The problem we are facing now is the unexpected death of our loved ones because of the sudden heart attack. Because of the changing life style the heart attack rate is increasing day by day. The current heart attack death rate is about 25% of the total deaths in India. The main cause of heart attack death is the lack of medical care at the right time. This problem can be avoided by this project. Here I am presenting an android based portable ECG monitor. The patient will be wearing a small device which senses the ECG data. It will send the sensed data to the patient’s Android mobile through Bluetooth. The Android mobile will be having an application which will be running a heart attack detection algorithm. If any abnormalities are found the patient will be notified through an audible alarm and first aid techniques will be shown to the patient in the phone’s display. This first aid instruction will increase the chance of survival of the patient. A report of the ECG will be send to the patient’s doctor through email so that he can prepare himself for the treatment. And also a sms containing patient’s location (gps data) will be send to the hospital so that help can be given at the earliest even if the patient is travelling. The goal is to provide early heart attack detection so that the patient will be given medical attention within the first few critical hours, thus greatly improving his or her chances of survival.
A Pathological Voices Assessment Using Classification
Authors: Arikrishnan T. , Darani C. P.
Published: August 2023

The diagnosing of pathological voice may be a tedious topic and it receives abundant attention. There are several diseases that adversely have an effect on our human speech (voice). The doctor will use only the equipments for detection of pathological voice. However, it is invasive and needs an skilled analysis of diverse human speech signal parameters. Automatic voice analysis for pathological speech has its own blessings, like 1) its quantitative and non-invasive nature. 2) permitting the identification and observance of vocal system diseases. Within the pathological voice classification techniques gathered by the voice of a patient, the goal is to discriminate whether the given voice is normal or pathological. From the speech Mel-Frequency Cepstral Coefficients (MFCC) has been extracted from the voice information and classified into two categories. However, the accuracy of the earlier classification methodology may need additional improvement. In my project work, Support Vector Machine (SVM) classifier is used for pathological voice classification with non-invasive nature to diagnose and analyze the voice of the patient.
Improving the Performance of User Search Goals Using Noval Approach
Authors: Harilakshmanraj J. S.
Published: August 2023

World Wide Web acts as storage repository and it used for an information retrieval. while, fetching information through user queries, a search engine in a large and un-effective collection of document. To avoid these conflict and to improve the search engine, I propose Novel based approach. This approach states two strategies: clustering and prioritation. Based on the user search goals the information is been restructured dynamically and it is been clustered and based on ranking algorithm, it has been prioritized.
Processing and Charecterisation of Epoxy/Carbon Black Nanocomposites by Twin Screw Extrusion
Authors: Kulkarni R. M. , Rudrakshi G. B. , Narasimhamurthy H. N.
Published: August 2023

This paper presents the experimental investigation of the influence of process parameters of twin screw extrusion on the dispersion, electrical, thermal and mechanical properties of epoxy/CB nanocomposites. Four factors, namely, loading level of carbon black in epoxy, screw speed; temperature and number of passes were selected for the design of L18 OA layout. Response factors such as electrical resistivity, glass transition temperature, microhardness and impact strength of epoxy/CB nanocomposites were studied. From TGA, the addition of CB to epoxy resulted in improved thermal stability. ANOVA of the experimental results showed that CB loading had significant influence on all the responses.
A System for Computer-Aided Gating Design for Single and Multi-Cavity Injection Moulds
Authors: Kumar Vijay , Virdi Roshan Lal
Published: August 2023

Design of injection moulding dies (called moulds) is a time consuming and complex activity that requires domain knowledge and vast experience of the die-designer besides information about manufacturing resources, part geometry, number of cavities, etc. The gating design is of great importance for reducing lead time and cost of part produced and to achieve first-piece-right. The gating design encompasses several steps, involves complex computational work, and requires a number of iterations. In the present research work an attempt has been made to develop a computer-aided system, which facilitates gating design of an injection mould taking part CAD file as input. The gating parameters are calculated by taking part geometry, material and number of cavities as input. The proposed system is divided into three modules, namely Gate design, Runner design and Sprue design. To demonstrate the capabilities of proposed system, it was tried for a number of parts and the results for two industrial case study parts are presented. Proposed system is a step forward to design-manufacturing integration for injection moulding process.
Finite Element Analysis of Magneto-Rheological Damper
Authors: Kumar Ashwani , Mangal S. K.
Published: August 2023

In this paper, a finite element analysis of magnetorheological fluid (mr) damper is presented. It is necessary to develop a fem model for calculation of damping force of a given mr damper. An axi-symmetric fem model is thus built on ansys platform to analyze and examine a prototype of the mr damper. In this paper, geometrical parameters and magnetic flux density at the clearance space of the damper are studied. The study has indicated that the fem modeling is effectively portraying the behavior of a mr damper and is adequate enough for estimation of the damping force, its control and design. The results obtained in this paper will be helpful to the future designers to predict the damping force of a given damper.
Elimination of Hydrogen Induced Cracks by Slow Cooling After Hot Rolling of Medium Carbon Molybdenum Steel Blooms
Authors: Ravichandar D. , Nagashanmugam K. B. , Balusam T.
Published: August 2023

At JSW Steel Limited, Salem Works (JSWSL), hydrogen induced cracks contribute more to ultrasonic defects in medium carbon molybdenum steel such as JDM 1046. As hydrogen tend to escape during cooling due to its smaller atomic radius and high diffusivity in the solid phase, experiments were conducted to reduce hydrogen induced cracks by slow cooling of blooms/bars. A study was conducted wherein few blooms/bars of the same heat were slow cooled and others were normal cooled (air cooled). After cooling, hardness, microscopic and ultrasonic examinations were carried out on these blooms/bars. Results revealed that, the slow cooled blooms/bars were found to be free from ultrasonic defects and showed reduced as rolled hardness when compared with air cooled blooms/bars. Slow cooling resulted in defect free steel against 15-35% defect levels observed in air cooled bars. The paper discusses various metallurgical changes, which facilitated the elimination of hydrogen in JDM 1046 grade steel.
Computational Fluid Flow Analysis of High Speed Cryogenic Turbine Using CFX
Authors: Upadhyay Sushant , Srivastava Shreya , Sagar Siddharth , Singh Surabhi , Dimri Hitesh
Published: August 2023

A turbo expander also referred as an expansion turbine, is a centrifugal or axial flow turbine through which a high pressure gas is expanded to produce work that is often used to drive a compressor. The low pressure exhaust gas from the turbine is at a very low temperature that is 120K or less depending upon the operating conditions. It is widely used as sources of refrigeration in industrial processes and liquefaction of gases such as oxygen, nitrogen, helium, argon and krypton. A cryogenic system needs many components, compressor, heat exchanger, expansion turbine, instrumentation, vacuum vessel etc. At present most of these process plants operate at medium or low pressure due to its inherent advantages. A basic component which is essential for these processes is the turbo expander. The main aim of this project to attain a minimum temperature and pressure and to study the variation of Mach number and entropy. This is done by computational fluid flow analysis of high speed rotating turbine. This involves with the three dimensional analysis of flow through a radial expansion turbine, using nitrogen as flowing fluid. The work is performed on various modules of Ansys that is BladGen, TurboGrid, CFX-Pre, CFX-Post. Bladegen is used to create the model of turbine using available data of hub, shroud and blade profile. Turbogrid is used to mesh the model. CFX-Pre is used to define the physical parameters of the flow through the Turbo expander. CFX-Post is used for examining and analyzing results. Using these results variation of different thermodynamic properties like Temperature, Pressure, Mach number, entropy etc. inside the turbine can be seen. Several graphs are plotted showing the variation of pressure, temperature, entropy and Mach number along streamline and span wise to analyze the flow through cryogenic turbine.
A Simple Tool for Solving Queuing Model with Erlang Distribution
Authors: Sakthi R. , Vidhya V. , Dhiki T.
Published: August 2023

In this paper we use the online tool to find the performance measures of the steady-state behavior of the queuing model where inter arrival and service times are Erlang distributions with parameters k and m respectively. The suggested tool has a simple graphical interface, based on a recently published simple recurrence method[1], it provides the performance measures of the queuing system (i.e., average number in the system, average waiting time, the system utilization, probability of loss, probability of waiting time), also the steady-state distribution of the system.
Optimization of Strain Gauge Transducer for Weighing Application Using GRA Method
Authors: Kolhapure Rakesh , Shinde Vasudev , Kamble Vijay
Published: August 2023

The main objective of current research is optimization of strain gauge transducer used in weighing application by maximizing sensitivity and minimizing volume. A simple model of strain gauge based ‘Double Ended Shear Beam’ transducer is considered for Finite Element Analysis (FEA). Taguchi method has been applied to construct an orthogonal array based on selected parameters. Next, multiobjective optimization is performed. As Taguchi method is unable to perform multi-objective optimization combined approach of Taguchi and Grey Relational Analysis (GRA) is carried out. This combined approach gives optimum parametric combination based on highest Grey Relation Coefficient (GRC). Analysis of Variance (ANOVA) is statistical technique is used to investigate contribution of each process parameters on the performance characteristic.
Evaluation of Mechanical Behaviour Aluminium Metal Matrix Composites
Authors: Gunasekaran D. , Parthasarathy C. , Chandradass J.
Published: August 2023

Technology is advancing, demand of the hour is increasing and to face that engineers are also ready. Maintaining the economic production with optimal use of resources is of prime concern for the engineers. Aluminum alloy materials or simply composites are combinations of materials. They are made up of combining two or more materials in such a way that the resulting materials have certain design properties on improved properties .The Aluminum alloy composite materials consist of high specific strength, high specific stiffness, more thermal stability, more corrosion and wear resistance, high fatigue life. Conventional materials like Steel, Brass, and Aluminum etc will fail without any indication. Cracks initiation, propagation will takes place within a short span. Now a day to overcome this problem, conventional materials are replaced by Aluminum alloy materials. Aluminum alloy materials found to the bestalternative with its unique capacity of designing the materials to give required properties. In this project tensile strength experiments have been conducted by varying mass fraction of SiC and fly ash magnesium with Aluminum. To attain maximum tensile strength various mechanical properties alloys are also to be investigated.
Analysis of Performance and Emission Characteristics of a Diesel Engine Fueled with Biodiesel
Authors: Sundara Raman R. , Sankara Narayanan G. , Manoharan N. , Sendilvelan S.
Published: August 2023

The rapid depletion in world petroleum reserves and uncertainty in petroleum supply due to political and economical reasons along with the sharp escalation in the petroleum prices have simulated the search for alternatives to petroleum based fuels especially diesel and gasoline. Moreover, bulks of petroleum fuels are being consumed by agriculture and transport sector for which diesel engine happens to be the prime mover. Though there are wide varieties of alternative fuels available the research has not yet provided the right renewable fuel to replace diesel. Vegetable oil due to their properties being close to diesel fuel may be a promising alternative for diesel engines. Due to their high viscosity, they cannot be directly used in a diesel engine. Transesterification is one method by which viscosity could be drastically reduced and the fuel could be adopted for use in diesel engine. Present investigation focuses on use of Rice Bran Oil in Diesel engine. Performance and exhaust emission characteristics of the engine have been evaluated. Esterified Rice Bran Oil has exhibited performance very close to that of diesel fuel. In the present work it is observed that, the NOX and unburned hydrocarbon emission decreases and carbon monoxide, particulate emission and smoke intensity increases with the use of biodiesel in diesel engine. When compared to non-esterified Rice Bran Oil, esterified Rice Bran Oil emits less smoke and therefore be regarded as an environment friendly fuel.
Experimental Investigation on Exhaust Noise Reduction Using Particulate Trap in Direct Injection (DI) Diesel Engine
Authors: Sundara Raman R. , Sankara Narayanan G. , Manoharan N. , Sendilvelan S.
Published: August 2023

Excessive pollution caused by engine emission has led to serious environmental degradation in the past three to five decades. Researchers worldwide are striving hard for reducing the emission from the engine. But the uses of dieselpowered vehicles are increasing day-by-day. The diesel engines have acquired much wider application than ever because of their main advantages of higher power and lower cost of the fuel. Although diesel exhaust is relatively clean with respect to unburnt hydrocarbons and carbon monoxide, it contains pollutants like particulate matter and oxides of nitrogen with greater exhaust noise. The paper reports on the control of the engine exhaust noise by a particulate trap for DI diesel engine. The experimental work comprises of design and development of the particulate trap for the given engine to control the exhaust noise level. The noise level reduction is also studiedusing a muffler. The reduction in noise level using particulate trap and muffler is experimentally investigated and compared. The noise level without particulate trap and muffler is 132 dB, with trap 116 dB, with muffler 125 dB. The percentage reduction in noise level is 12.5% with trap and is 9% with muffler.
Managing Cloud Security Using Energetic Information Flow Control
Authors: Babu Renga Rajan S. , Pushpa Ranjini D. , Shanmuga Sundari B. , Haseena Beevi A. , Meenakshiammal R.
Published: August 2023

Most of the cloud computing solutions used today does not ensure security. Although methods like access control list, firewall and cryptography impose limits on information that is released by the system, they provide no guarantee about information propagation. We propose a Decentralized Information Flow Control (DIFC) that is integrated into the PaaS cloud model. This enhances security by associating labels with the data it protects. This datacentric security mechanism tracks and limits data propagation.
Experimental Studies to Validate Computational Fluid Simulation of Coolant Flow Behavior through different Nozzles for Nozzle Effectiveness in Cylindrical Grinding Process to Enhance Workpiece Surface Quality
Authors: Singh Mandeep , Sharma Yadwinderpal , Singh Jaskarn
Published: August 2023

In the present paper, ANOVA (Analysis of Variance) technique has been adopted. The simulated results of flow behaviour through six different kinds of nozzles were experimentally validated to study the effect of these different types of nozzles as well as other process parameters on the response parameter namely surface roughness of ground workpiece during a cylindrical grinding process and optimized using this technique. The air flow behaviour around the rotating wheel and workpiece was simulated with computational fluid approach in ANSYS CFX. The optimum solution was found coherent with the simulated results. Spline type nozzle followed by convergent-divergent type was found the two best nozzles. Optimized solution also indicated the best parametric setting for the optimum results.
Enhancing Durability of Hot Work Tool Steel by Duplex Treatments: A Review
Authors: Chander Subhash , Chawla Vikas
Published: August 2023

The abrasive wear unitedly with thermo-mechanical fatigue and plastic deformation is a critical factor of the process of failure of forging dies during the forging of components with close tolerances and not subject to further mechanical treatment. The failure rate of forging dies are also greatly influenced by the variety of the shapes of the forging and the precision with which these are made. The effective way to improve the durability of forging dies is a modification of surface properties by the constitution of layers or coatings having appropriate properties. Among huge available techniques; Plasma nitriding along with suitable coating formed by physical vapor deposition (PVD) technique; commonly known as Duplex/Hybrid treatment; is widely used, allows control of surface microstructure, enhance wear resistance, corrosion resistance and fatigue resistance. This had been noted that Duplex Treatment can increase the wear resistance of the tool/die up to 30%. The tribological behaviours of duplex treated dies in hot forging are reviewed and presented here. Some commonly used surface treatments as well as coatings in hot forging dies are given. Eventually,  xperimental results obtained by various researchers could be used in theory and model developments for hot forging process and die materials at high temperatures. The review also showed the great potential in further investigations in tribology.
Structural and Dielectric Behaviour of Blend Polymer Electrolyte based on PEO-PAN + LiPF6
Authors: Arya Anil , Sharma Sweety , Sharma A. L. , Kumar Dinesh , Sadiq Mohd
Published: August 2023

Solid polymer electrolytes (SPEs) have recently gained more research interest in the area of materials science due to their wide application range in energy storage/conversion devices like batteries, supercapacitors, solar cells and sensors. A blend polymer electrolyte based on polyethyeleneoxide (PEO) and polyacrylonitrile (PAN) doped with Lithium Hexaflurophosphate (LiPF6) has been prepared by solution casting technique using Dimethyalformamide (DMF) as a solvent. The complex formation has been studied using X-ray diffraction (XRD). The decrease in intensity and broadness in peak revels the amorphous phase formation. The dielectric study of PS films has been done which gives the two order decrement in relaxation time (i.e. 10-4 – 10-6) which is directly related to faster on dynamics in polymer electrolytes. The analysis has shown the dielectric polarization at low frequencies. The dielectric peak has been observed to shift toward the higher frequency side with the addition of salt, suggesting the low sample viscosity and faster conduction of ions.
Electrical Conductivity and Ion Transport Number Analysis of Polymer Nanocomposite Films
Authors: Sharma Parul Kumar , Sharma Anshul Kumar , Sadiq M . , Sharma A. L.
Published: August 2023

Solid state free standing polymer nanocomposite films have been used in numerous vitality related segments like: high energy density solid polymer batteries, PEM fuel cells, super capacitors, etc. Such applications require a desirable conductivity value of the order of ~10-3 Scm-1 at room temperature. A free standing transparent film of solid state polymer electrolyte based on PEO+ LiPF6 with different compositions of nano sized filler (BaTiO3) in weight percent (x = 0, 1, 2, 5, 10, 15, 20 ) is synthesized by using standard solution cast technique. Surface morphology of the prepared polymer composition is examined by field emission scanning electron microscopy (FESEM). I-V characteristics of the prepared sample have been characterized for the stability of electrochemical potential window. The transport number analysis of prepared sample has been done to separate out the contribution due to ions and electrons in the electrical conductivity results. The transference number has been estimated and found of the order of ~94%.
Comparative Study of Helical Compression Suspension Spring for Different Materials
Authors: Patil Sujit S. , Karunasagar Subodh , Shah Shubham
Published: August 2023

One of the major problems faced by automobile industries in few decades is the fuel efficiency which is related to the weight of the vehicle. This has led to more research in light weight materials with same mechanical properties as that of conventional materials. The composite materials are serving this need. In this study the helical compression steel springs are replaced with that of composite materials. The composite materials used are E-glass/Epoxy and Carbon fiber/Epoxy. Spring analysis is done with FEA and results are compared with steel spring. The springs are manufactured and the experimental deflections are also measured. The study shows that the weight reduction achieved with composite spring. Thus, indicating that the composite material springs can be effectively used as replacement for heavy steel springs.