bluuebunny/crossref_metadata_2025 huggingface dataset:
Tensile Properties of Kenaf Yarn Fibre Reinforced Unsaturated Polyester Composites at Different Fibre Orientations
Authors: Misri Sairizal , Sapuan S.M. , Leman Zulkiflle , Ishak M.R.
Published: June 2014

This paper reported the study of tensile properties of kenaf yarn fibre reinforced unsaturated polyester (UP) composites at different fibre orientations, i.e. 0o, ±45o and 90o. It is concluded that composites with 0o orientation show higher strength and stiffness than composites with ±45o and 90o angle fibre orientation. The highest value of stress is 29 MPa for 0o loading direction followed by ±45o loading direction (28 MPa) and 90o loading direction has the lowest stress value of 6 MPa. Tensile modulus results revealed the highest value of 10.61 GPa for 0o loading direction and the tensile modulus for 45o orientation of loading direction is 5 GPa, followed by the modulus for 90o of fibre loading direction of 1.2 GPa; which is the lowest.
Engine Map and Optimal Operation Path Construction for an Engine-CVT Powertrain System
Authors: Seedam Atthapol , Jaisuk Piyanath , Jirawattana Piyoro , Radpukdee Thana
Published: June 2014

Rising fuel costs increase the importance of CVT powertrains in the automotive industry. Their benefit is that they allow an engine to operate at any condition which motivates development of fuel economy mode control strategies. In this work, an engine map is multiplied by the efficiency of a hydrostatic continuously variable transmission (HCVT). Therefore, the map is pictured in a 3D Cartesian space which is functioned into 3 parameters of indicated engine torque, engine speed, and transmission ratio. Operation of the engine powertrain system can be set to support any required power and speed of the vehicle at the highest efficiency point. The study examines a 900 cc. gasoline engine connected to the HCVT. To generate the operating range of the engine, the engine speed and hydraulic pressure were controlled by an electronic throttle and pump swash plate variation, respectively. The operating range is 3.353 - 10.442 kW. This power corresponds to a vehicle ground speed of 43.065 61.488 km/hr through a gear ratio of 0.5-1.5. Consequently, the system efficiency map was created and then used to construct the best operating path according to the required driving cycle. The points on the path were selected by the concept of the highest overall efficiency in the 3D map. As a result, the optimal operation path was found by connecting each point which is directed to the best solution for vehicle operation.
The Effect of Alkali Treatment on Impact Strength of Woven Kenaf Reinforced Unsaturated Polyester Composite Using Vacuum Infusion Process
Authors: bin Saiman Mohd Pahmi , bin Wahab Md. Saidin , Wahit Mat Uzir
Published: June 2014

Nowadays, natural fibres are used in many applications such as automotive, due to its material properties and being environmental friendly. This study is on woven Kenaf reinforced unsaturated polyester focusing on the effect of alkali treatment towards the impact strength of the textile composite. The experiment consists of two different yarn size woven in plain weave and infused using vacuum infusion process into a composite panel. Optic microscopy was used to determine the swelling of fibre, fabrics and composites before and after alkali treatment. The high speed puncture was used to evaluate the impact strength of pure unsaturated polyester and the composite. The results showed that alkali treatment enhanced the impact strength of the composite compared to pure polyester and untreated composite. The swelling of the fibres caused the yarns to expand throughout the thickness and the width of each composite. The gap between the yarns interlacing was reduced due to the expansion of yarns which has increased the covering area of the reinforced material.
The Effect of Layers and Bullet Type on Impact Properties of Glass Fibre Reinforced Polymer (GFRP) Using a Single Stage Gas Gun (SSGG)
Authors: Safri S.N.A. , Sultan Mohamed Thariq Hameed , Razali N. , Basri Shahnor , Yidris Noorfaizal , Mustapha Faizal
Published: June 2014

The purpose of this work is to study the best number of layer with the higher impact energy using Glass Fibre Reinforced Polymer (GFRP). The number of layers used in this study was 25, 33, 41, and 49. The impact test was performed using Single Stage Gas Gun (SSGG) for each layers given above with different bullets such as blunt, hemispherical and conical bullets. The gas gun pressure was set to 5, 10, 15 and 20 bar. All of the signals captured from the impact test were recorded using a ballistic data acquisition system. The correlation between the impact energy in terms of number of layer and type of bullet from this test are presented and discussed. It can be summarise that as the number of layer increases, impact energy also increases. In addition, from the results, it was observed that by using different types of bullets (blunt, hemispherical, conical), there is only a slight difference in values of energy absorbed by the specimen.
The Ejection and Strength of Binary Iron-Cellulose Powder Compacts
Authors: Mohd Tahir Suraya , Anuar M.S. , Simmadorai D.
Published: June 2014

In this study, the ejection stage during the densification process and the mechanical strength of green (unsintered) compact were studied for the binary powder compact of iron and micro crystalline cellulose (MCC). The mass percentage of MCC powder were varied between 0% to 60% of the total mass composition of the iron and MCC mixture. Three different compaction load of 30kN, 60 kN and 90 kN were applied during the compaction process. The tensile strength of the green compact was determined by conducting diametral compression test where the green compact was loaded until fracture. From the compaction experiment, green compact with 60% MCC and 40% iron is the least friable which leads to coherent and well compactable powder. This composition also results in the green compact with the highest tensile strength.
Thermoplastic Matrix Material Selection Using Multi Criteria Decision Making Method for Hybrid Polymer Composites
Authors: Mansor Muhd Ridzuan , Sapuan S.M. , Zainudin Edi Syam , Nuraini A.A. , Ariff Arep
Published: June 2014

Multi criteria decision making (MDCM) methods are amongst the approaches available in aiding composite designers to make the final decision especially during the material selection process where multiple solutions are present and various requirements are required to be satisfied simultaneously. Thus, in this paper, material selection process of thermoplastic matrix using MDCM methods for hybrid natural fiber/glass fiber polymer composites is presented. The aim is to identify the most suitable type of thermoplastic matrix to be used in the hybrid polymer composites formulation. The Weighted Sum Method (WSM) is applied in the selection process of seven candidate thermoplastic matrix materials based on the product design specifications. The overall analysis highlights that low density polyethylene (LDPE) is the preferred matrix for the intended application based on the highest scores obtained compared to other candidate materials. A signal-to-noise (S/N) ratio analysis was further performed to validate the initial selection results where LDPE once again outperformed other candidate materials with highest S/N ratio score in the non-compensatory approach.
Experimental Investigation on Thermal Conduction of Carbon Nanotubes Reinforced Copper Matrix Composites
Authors: Ahmad Faiz , Aslam Muhammad , Raza M. Rafi , Muhsan Ali S. , Shirazi M.irfan
Published: June 2014

The performance of the micro-chip is affected by overheating and hence reduces the efficiency of electronic devices. The development of high thermal conductivity material can solve problems associated with dissipation of heat from the micro-chips. Thermal conductivity for carbon nanotubes (CNTs) are in the ranges of 1200-3000 W/moK which considered as the best candidate material for heat sink applications. This research investigates the fabrication of CNTs reinforced copper composites using powder metallurgy method. Copper powder and CNTs were ball milled to prepare mixtures and compacted at 600 MPa to fabricate test samples. The compacted test samples were sintered in argon atmosphere at 850oC. Sintered density of CNTs/Cu composites was measured and compared with theoretical density. Density data showed that 98% sintered density was achieved. Optical and scanning electron microscopic (SEM) examination of sintered compacts showed good grain growth, however porosity was also noted in sintered samples. Field emission scanning electron microscopy (FESEM) showed well dispersion of CNTs in copper matrix and interfacial bonding between copper particle and CNTs. In this experiment, the addition of 2 % vol. CNTs in copper matrix showed 9% increase in thermal conductivity approximately compared to thesintered pure copper.
Analysis on Tool Life and Surface Characteristic in Milling Stavax Supreme Material
Authors: Ibrahim M.F.C. , bin Baharudin B.T. Hang Tuah , Shari Naain
Published: June 2014

Stavax Supreme material is classified as difficult-to-machine material. The difficulty does not preclude the use of this material, especially in the mold industry. In this experiment, high speed end milling of Stavax Supreme (52 HRC) was investigated using five different types of tool. Performance of the cutting tools was compared with respect to tool life and surface roughness of the workpiece. Machining process was conducted in two parameters where each parameter used different rotation spindle speed and feed rate but same chip per tooth removal rate. The best cutting performance was obtained with TiN and TiCN. TiAlN tool also proved to be suitable for high speed end milling of Stavax Supreme but for finishing process only because fast tool wear in high spindle speed. The Xceed coated tool is more suitable for roughing process only in high spindle speed.
Determining Optimum Electro Discharge Machining Parameters for Drilling of a Small Hole by Utilizing Taguchi Method
Authors: Mohd Ariffin Mohd Khairol Anuar , Che Hussain Hazami B. , Mohamed Saiful Bahri , Sulaiman S.
Published: June 2014

Electro discharge machining (EDM) is a process that uses an electric sparks to generate the high temperature and melt the workpiece. One of the EDM process is drilling. In EDM drilling, an electro thermal mechanism is introduced between the electrode and work piece to create the hole. The hole size is dependent on the diameters of electrode used during the drilling process. The present study performs Taguchi method to investigate the optimal process parameters for high-speed EDM super drill machine that is used to make a small hole. The workpiece used is made from titanium alloy (Ti-6: ASTM B348 Grade 5) and the copper electrode is 2.0 mm in diameter. In this experiment, the process parameters that were selected to be optimised are: current pulse off, maximum current and standard voltage levels. An orthogonal array L9 were employed to analyze the hole enlargement and material removal rate (MRR) depending on 2.0 mm diameter hole penetration. The optimum EDM parameters for hole making process was established and verified with the acquired results.
Development of Microstructure and Fracture Toughness of AL-6063 Alloy Using Equal Channel Angular Extrusion
Authors: Nemati J. , Sulaiman Sreenivasan , Majzoobi G.H. , Mohamed Ariff Azmah Hanim , bin Baharudin B.T. Hang Tuah
Published: June 2014

Severe plastic deformation (SPD) is one of the processes used to refine the microstructure of materials. Equal Channel Angular Extrusion (ECAE) is the most common method of SPD. In this study, AL-6063grain refinement was performed using the Equal Channel Angular Extrusion method. The material was extruded up to 6 passes at a temperature of 200°C following route A. A suitable die sets equipped with heating elements alongside a thermometer was employed with the intention of extruding the material. Between the two channels, there was an angle of 90°. The results showed that the material grain average diameter decreased from 45μm to 2.8 μm after 6 passes of the ECAE. The Charpy test was used for measuring the fracture energy of various samples. The fracture toughness was the function of this energy. According to this experiment, the fracture toughness rose as the number of the ECAE process elevated. Moreover, the toughness improved for 90% after 6 passes of the ECAE process.
Effect of Machining Process on Surface Microhardness of Titanium Carbide Reinforced Aluminium LM6 Composite
Authors: Yusuf Muhammad , Mohd Ariffin Mohd Khairol Anuar , Ismail N. , Sulaiman S.
Published: June 2014

Due to the fact that material is being removed from the bulk material, all machining operations have some impact on the resulting surface integrity of the machined components. This paper presents an investigation on surface microhardness on machining of TiC reinforced aluminium LM6 alloy composite using uncoated carbide tool under dry cutting condition. The experiments that were carried out consisted of different cutting parameters based on combination of cutting speed, feed and depth of cut as the parameters of cutting process. The microhardness of machined surface at a range of cutting speed, feed and depth of cut were measured. The results show that the microhardness was generally found to be higher near the machined surface layer than the hardness of the matrix in the bulk material during machining for all cutting condition. Microhardness increases beyond the bulk hardness of material occurred 50 μm below machined surface, and then microhardness starts to decrease and reaches the bulk hardness. The microhardness values increases with increased the feed and depth of cut. The highest microhardness recorded was 68 HV0.5 when machining at a lower cutting speed of 100 m min-1, feed of 0.2 mm rev-1 and depth of cut of 1.0 mm.
Machinability Improvement in Turning of Titanium Alloy (gr2) Using Cubic Boron Nitride (cBN) Cutting Tool
Authors: Eriki Ananda Kumar , Rao K. Prahlada , Varaprasad K.C.
Published: June 2014

Titanium has been perceived as a material that is difficult to machine. Manufacturers are known that, with proper procedures, titanium can be fabricated using techniques no more difficult than those used for machining SS316. The machining of hard workpiece materials requires significantly harder cutting materials. Advancements in the aerospace, nuclear and other industries require the enhanced in-service performance of engineering components. These requirements have resulted in a large scale development and use of heat-resistant and high-strength materials, such as Ti6A4Valloys, which pose considerable machining problems. In this analysis on machining of titanium alloy using cubic boron nitride (cBN) tools, the machining performance was evaluated in terms of cutting force, specific cutting pressure, cutting temperature, chip strain and surface finish. The studies of turning machinability of titanium alloy using round tee-lock cubic boron nitride (cBN) inserts have been presented. A series of turning experiments were performed with cubic boron nitride (cBN) inserts with the objective: To determining the effect of cutting variable on the tool life. To investigate the effect of cutting speed and feed rate on the surface roughness while using round tee lock inserts. A good surface finish of 0.5 to 1 micron was obtained for cutting speed between 15 45 m/min, feed of 0.10 to 0.20 mm/rev and depth of cut of 1 mm and also find the stress intensity in two different axis will be studied.
New Car Assessment Program for Southeast Asian Countries: Current Status and Future Developments
Authors: Mohd Isa Mohd Hafzi , Ahmad Yahaya , Abu Kassim Khairil Anwar , Voon Wong Shaw
Published: June 2014

In line with the Vehicle Pillar of the United Nations Decade of Action for Global Road Safety 2011 2020 in elevating motor vehicle safety standards and encouraging a market for safer vehicles in the region, a new car assessment program for Southeast Asian countries (ASEAN NCAP) was recently established. During the first phase of the program, seven popular car models were selected and tested according to European New Car Assessment Program (Euro NCAP) protocol on offset frontal crash test. Thus, this paper reports the results for the completed phase along with the ratings for adult and child occupant protections. Future developments of this program as well as manufacturer responses are also discussed.
Correlation between Welding Parameter and Bead Geometry of Flux Cored Arc Welding (FCAW) in Horizontal Position (2F)
Authors: Abd Rahman Nik Mohd Baihaki , Tham Abdul Ghalib , Abas Sunhaji Kiyai , Hassan Razali , Manurung Yupiter H.P. , Redza Mohd Ridhwan Mohammed , Yaakub Mohamad Yazman
Published: June 2014

A robotic system can convert the semi-automatic Flux Cored Arc Welding (FCAW) to an automatic welding system. The critical requirement in automated welding process is that the optimal welding parameter has to be set before welding start. These input welding parameters cannot be easily guessed unless one has the knowledge. Only very specific range of heat input that produces quality weld deposition. The correlation between the heat input and fillet weld bead can be displayed in a unique trend-line graph. Mathematical formulas that match the trend-line profile can be used to create a prediction calculator that displays the digital values of weld bead geometry when welded at a specific range of heat input. Small Mean Absolute Deviation between predicted and measured geometry means good prediction accuracy. With this correlation chart, the welding parameter for quality weld bead can be selected and the geometry of FCAW weld deposition in 2F position can be predicted accurately without trial and error.
Municipal Waste Sludge Drying in an Agitated Drum Dryer
Authors: Poos Tibor , Horvath Miklos
Published: June 2014

This study presents experiences of drying waste sludge in an agitated drum dryer. Measurements were performed on an agitated drum dryer apparatus equipped with up-to-date instrumentation. As waste sludge is prone to adhesion and balling, it is important to identify the conditions appropriate for drying. Different cases were examined: during measurements, the rotational speed of the agitated drum dryer, the quantity and moisture content of the sludge fed in as well as the temperature of the wall and the drying gas were changed. The data yielded were used to represent the temperature characteristic of drying and the mass changes of the product.
A Review of the Critical Success Factors in the Adoption of Lean Production System by Small and Medium Sized Enterprises
Authors: Yamchello H. Tamjid , Samin R. , Tamjidyamcholo A. , Bareji P. , Beheshti A.
Published: June 2014

Small and Medium-sized Enterprises (SMEs) are important contributors to the economy of a country. In recent years, due to globalization and competition in the market they have faced high pressure to survive in the market. Lean production as a method of cost reduction which improves the efficiency has been adopted by many SMEs to survive within these dynamic markets. However, many failures of implementing a successful lean production system have been reported, caused by the inherent limitations of and factors unique to SMEs. This paper reviewed studies that focused on the Critical Success Factors (CSFs) of implementing lean production among SMEs. The result of the study highlighted that lack of top management commitment, cultural change, education and training might hinder the implementation of lean production in SMEs successfully.
A Survey on Lean Manufacturing Practices in Malaysian Food and Beverages Industry
Authors: Khusaini Nurul Syuhadah , Jaffar Ahmed , Noriah Yusoff
Published: June 2014

This paper presents a preliminary study on Lean Manufacturing (LM) implementation in the Malaysian food and beverage industry. A survey has been conducted to gauge the extent of LM practices implemented in the organizations. The findings show that the organizations are at the infancy level in terms of implementing LM practices. It can be seen from the Person mean, which is at-0.67 logit. Most of the LM practices in each of the 5 domains studied were not implemented by the majority of the respondents. It was also found that pull production is not being implemented in the same industry. This indicates that LM is not completely accepted throughout the food and beverage industry in Malaysia.
Alternative Numerical Validation Methodology for Short-Term Development Projects
Authors: P. Hassan Mohamed , Mahmud Abdullah Saad , Rafie A.S.M. , Zahari Rizal
Published: June 2014

Virtual prototyping has been increasingly taking over the process of sole physical tests. Companies are reporting up to 80% reduction in errors when using virtual tests through the design process. Conventional numerical validation methodology however, is not as beneficial for short-term projects because any new numerical scenario has to be validated before being used. Although during the conceptual stage, relative values can be sufficient. The alternative methodology proposed also uses realistic loads. It comprise applying these loads on a functioning structure to verify them. The modified version of the structure is then relatively validated by being tested under these verified loads. Thus, bypassing the physical tests requirement. Aerodynamic loads are acquired from simulating the Gulfstream IV-SP forward fuselage during climbing, cruising and landing. Mechanical loads are acquired from estimating structural weight and impact load during landing. In total, three finite element models were created. Autodesk softwares were used to perform CFD and FEA. Only greater loads were applied during FEA. Results simplified neglected cruising data for having lowest values. Comparing estimated weights of functional and modified structures showed a possible 15% weight savings. While the FEA results showed a promising 45% less inquired stress within the modified structure.
Performance and Emission of a Common Rail Passenger Car Engine Fuelled with Palm Oil Biodiesel
Authors: Abdullah M. Adlan , Ani Farid Nasir , Hassan Masjuki
Published: June 2014

This study investigated the effects of palm oil methyl ester biodiesel blends on a common rail passenger car engine in terms of performance, oxides of nitrogen (NOx) and smoke emissions. Up to 40% biodiesel blend was used in this study. As expected, running on biodiesel reduces full load torque and power. The fuel consumption increased up to 10%, particularly at part loads. On the other hand, the thermal efficiency only exhibit small difference between the fuels. As much as 46% reduction in smoke emissions was observed at 40% biodiesel content. The NOx emission was shown to be slightly increased under certain operating conditions at part loads, while showing reduction at other conditions. In general, biodiesel showed more significant effects on the performance and emissions at part load conditions. Thus, low and medium speed/load region was proposed as an area where improvement by injection strategies optimization can be made.
Developing a Framework for Sustainable Supply Chain Management
Authors: Molamohamadi Zohreh , Ismail N. , Leman Zulkiflle , Norzima Zulkifli
Published: June 2014

It has been a while since supply chain management (SCM) has shifted its focus from production efficiency to sustainability related issues. Implementing this strategic shift demands all supply chain members, all processes, and generally all of the elements to be involved in helping the chain move faster and further toward sustainability. This has necessitated the strong relationship between supply chain and the three sustainability pillars: environment, economy, and society. Having considered this essentiality, this paper, describes the supply chain, sustainable development and discusses their existing definitions in the literature. The relationship between supply chain and sustainability is then discussed and a framework for sustainable supply chain is proposed based on the previous suggested structures for supply chain and sustainable development.
Influence of Leadership Behavior on Project Management Performance in Malaysian Industries
Authors: Mokhtari Majid , Zarei Mohammad Mahdi , Leman Zulkiflle
Published: June 2014

In today’s industrial environment, effective modern project effort has become essential for firms for continuous competitive improvement. In recent decade, successful project management has become a fundamental issue to keep in existence within a corporation. Poor leadership has cost millions of dollars on unsuccessful projects each year. Lack of a proper leadership style in the five stage of project management may negatively affect the implementation of corporate strategic business goals and objectives and eventually lead to project failure. This research was carried out in different types of Malaysian industries 9 project managers., This study used a structured questionnaire was used to assess influence of transactional and transformational leadership behavior during the 5 stages of project. Previous research works show that both leadership behavior had significant influence on leading the process to succeed. However, towards the end of the project, the selected people believed in transactional leadership. The results show that the timing of the project did not have much influence in changing the leadership style. The result implies that in the early stages, project managers are more likely to use transformational style.
Lot Streaming and Preventive Maintenance in a Multiple Product Permutation Flow Shop with Intermingling
Authors: Mortezaei Navid , Norzima Zulkifli , Tang S.H. , Rosnah Mohd Yusuff
Published: June 2014

A mathematical model forlot streaming problem with preventive maintenance was proposed. A mixed-integer linear model for multiple-product lot streaming problems was also developed. Mixed-integer programming formulation was presented which will enable the user to identify optimal sublot sizes and sequences simultaneously. Two situations were considered:1) all machines were available, and 2) all machines needed preventive maintenance tasks. For both situations a new mixed-integer formulation was developed. To demonstrate the practicality of the proposed model, numerical example was used. It showed that the percentage of make span reduction due to lot streaming in permutation flow shop is 54% when compared to consistent sublots with intermingling case.
Quality Management System and Risk Management System: Similarities and Possibilities for Integration
Authors: Samani Mahmoud Asad , Ismail N. , Leman Zulkiflle , Zulkifli N.
Published: June 2014

Today organizations are required to deal with and manage a variety of challenges in their day-to-day activities. Examples of these challenges are issues related to quality of products/services, environment, employees’ safety and health, corporate social responsibilities, risks and many others. In response to these challenges, several Management Systems (MSs) and Management Systems Standards (MSSs) have been introduced in recent years to systematically guide an organization to cope with these challenges. The need to create Integrated Management System (IMS) is the result of increase in the number of these MSs and MSSs. There are also evidences in literature and practice that organizations have slowly started to tackle the IMS issue. The journal papers’ related to MSs Integration field, highlight that in theory any two MSs or even more are potentially capable of being integrated. In this study, it will be shown that the attitudes and approaches behind the two important function-specific MSSs developed by ISO Organization, i.e. Quality Management System (QMS) and Risk Management System (RMS) are largely similar and complementary. Hence, the integration of these two MSs seems justifiable. The main driver for such integration is to reduce the number of MSs in an organization and hence to decrease the number of resources employed. Also it will be demonstrated that the integration of these two MSs will result in more significant background, cultural context, techniques, procedures and synergy to an organization.
Review in Supply Chain Base on Green Consumers Attitude
Authors: Zarei Mohammad Mahdi , Mokhtari Majid , Yusuff M. Rosnah
Published: June 2014

The aim of this study is to discuss the environmental concern levels of the consumers and the green customer attitude towards suppliers and improving suppliers’ green performance. However, for organizing and improving suppliers, they should cover different groups of consumers which have different levels of environmental concerns. Despite, customers have environmentally conscious toward product and care about protecting the environment. Thus, with customer’s environmental concern, significant positive influence have been emerging from suppliers in parallel response toward environment. Although with the time passing, consumer attitude will be changed and suppliers should able to follow and respond to consumer needs. Therefore for responding these needs and decreasing the environmental impacts, supply chains are using Green Customers’ Attitude Orientation which is powerful philosophy. In this paper, have been attempted to show what consumers’ attitudes are and how they behave and act towards green products and how can improve the suppliers’ performance can be improved.
Skills Improvement of Instructor to Provide Technical Consultation with Industries
Authors: Zeti K. , Faieza A.A.
Published: June 2014

Technical training instructors play an important role in shaping students with value of employability and high workability. Human capital development of vocational instructors produce quality students who fulfil industrial requirements and in line with the national agenda towards highly skilled workers. Based on the Malaysia’s Development Plan of Occupational Skill, the issues and challenges that have been identified in producing skilled workers development is a matter of less competent trainers in interpersonal and technical skills. The objective of this study was to identify and analyze the development of technical instructor for giving consultancy services to the industry. Development of technical training instructors have been formulated through Community Employment Support Services to build collaboration between the community, technical institutes and industry using three main concept or tools: Employment Support, 5S Kaizen and Curriculum Development Based on Ability Structure. The role of employers in providing training and education to employees is vital in establishing career development of employees. Employers who contributed to their employees' training funds through Human Resources Development Council would provide opportunities to increase the skills of workers. The biggest impact on high skills is customer satisfaction and increase in organizational productivity.
Risk Evaluation Approach in Failure Mode and Effect Analysis of Automotive Headlamp Assembly
Authors: Abdullah Shukriah , Faieza Aziz Abdul
Published: June 2014

Headlamp assembly entailed a complex assembly process and error in assembled can result in technical problem and higher reject rate at the end of the assembly process. A study has been conducted, in one of the automotive headlamp assembly in Malaysia, where there are numerous defect detected during the assembly process, such as metal spacing missing, wrong model housing, wrong sticker affix, wrong orientation with a total of 80% defects detected. Currently the headlamps are assembled with no dimensional control, results in high physical nonconformity product. The main objective of this project is to identify potential failure in headlamp assembly process. The approach used was risk assessment tool which is Process Failure Mode and Effect. This work also developed the corrective action plan for accurate ranking of Failure Modes by Risk Priority Number-based method and implement it to the process assembly. The result showed that there was increased of 5% in preventive action and 4% increment of the detection action
The Impact of Information Technology Investment on Supply Chain Capabilities: A Review
Authors: Tang S.H. , Moosavipur Shiva Sadat , Sulaiman Sreenivasan , Mohd Ariffin Mohd Khairol Anuar , Ghobakhloo Morteza
Published: June 2014

In the manufacturing industry, control of information and movement of material from suppliers at all levels is a critical matter.IT helps to manage all information among suppliers. Pervious research have shown that IT has indirect effects on business performance. Moreover, there are many discussions about the capabilities and mediate the relationship between IT and business performance such as supply chain performance and supply chain process integration. The integration of dissimilar supplementary resources can produce interaction that can cause better performance.
Design, Analysis and Fabrication of Conceptual Innovative Hand Tool
Authors: Noordin M.N.A. , Hudzari R.M. , Sapuan S.M. , Ssomad M.A.H.A.
Published: June 2014

Dioscorea hispida is a poisonous plant normally found in forest where scientific studies have shown that its tuber contains toxic poison and can be consumed after its poison is removed. Traditionally the tubers were placed in flowing river water for several days. In the harvesting aspect, an innovative hand tool were conceptually designed to replace the traditional hoe or “cangkul”. Using IMADA digital force gauge to measure the force required for pulling out the tuber and reverse engineering methods, an innovative hand tool were designed and developed. The results from experiments showed that the force required for harvesting the Dioscorea hispida tuber is found significant with its weight versus regression squared (R2) of 0.86. The information of optimum force required from field experiment is used to model the simulation and practicality in Computer Aided Design (CAD) environment system. The finite element on stress distribution on selected material of hand tool was simulated by uploading the material characteristic on simulation program embedded in Solidworks software. The end result of the simulation is based on visualization of analysis in Solidworks while producing the hand tool for designing and fabrication from material which is lighter and stronger.
A Development of Human Machine Interface in a Miniature 3-Axis Milling Machine Prototyping
Authors: Pratumsuwan Pornjit , Suebsomram Anan
Published: June 2014

This paper presents a development of human machine interface (HMI) which was applied to a miniature 3-axis milling machine prototyping. The development began with the study and design of a milling machine. Then, virtual prototyping, this stage is the integration of aided design, programming design, and simulation design to demonstration the functionality of the virtual machine in a computer environment. After that, the virtual prototype which was verified and optimized to be used a physical prototyping. Finally, links the virtual and physical together. The experimental results show that a performance of proposed HMI in a machine prototyping was satisfactory.
Radiation Degradation Modeling of Bipolar Operational Amplifier Input Offset Voltage in LTSpice IV
Authors: Bakerenkov A.S. , Pershenkov V.S. , Solomatin A.V. , Belyakov V.V. , Shurenkov V.V.
Published: June 2014

Integrated circuits are used in electronic equipment of spaceships. Therefore, they are impacted by ionizing radiation during space mission. It leads to electronic equipment failures. At present operational amplifiers are base elements of analog electronic devices. Radiation impact leads to degradation of operational amplifiers input stages. Input bias current increasing and input offset voltage drifts are the results of ionizing radiation expose of operational amplifiers. Therefore, space application electronic equipment fails after accumulation of limit dose. It isn’t difficult to estimate radiation degradation of input bias currents of bipolar operational amplifiers, but estimation of dose dependence of input offset voltage drift is more complex issue. Schematic modeling technique based on Gummel–Poon transistor model for estimation of input offset voltage drift produced by space radiation impact was experimentally verified for LM324 operational amplifier and presented in this work. Radiation sensitive parameters of Gummel–Poon model were determined using 2N2907 bipolar pnp transistor.
Experimental Study of Wind Driven Scroll Pump
Authors: Wiroonritichai Chanchai , Kritmaitree Pollakrit
Published: June 2014

This paper describes the feasibility study of wind driven scroll pump for wind energy application using in Thailand to design, fabricate and test. The testing set was adapted by the Japanese Industrial Standards (JIS B 8301) to define the relationship of pressure and flow rate curve (H-Q Curves), the relatioship of flow rate and pump speed , and the volumetric flow rate. The results presented the pressure and flow rate which showed the inverse variation in linear equations. The speed of the pump and flow rate were direct variation in linear equations. The maximum flow rate was 20.23 liters/minute in the speed of 714 RPM which fully opened valve. The average of volumetric efficiency was 89.55%.
Educational Opportunities via Distance Learning System
Authors: Mimorov Ilya , Livshits Irina , Vasiliev Vladimir
Published: June 2014

Distance teaching is an important part of the education process and it is necessary to implement such systems to achieve success at building the new teaching process with modern technology and software. Professors of National Research University of Information Technologies, Mechanics and Optics obtain big experience in specially teaching optical design and other areas of science. Because of growing international links between different universities the distance education becomes an important part of all educational process. Introduction of a system of distance teaching is one of the important projects that will give an opportunity to get students and teachers all around the world. The current publication is devoted to analyze steps to integrate distance teaching system at educational process.
United Estimation of Time Delay and Frequency Drift in XNAV
Authors: He Zhen Ni , Fei Bao Jun , Yao Guo Zheng , Du Jian
Published: June 2014

The original navigation information of XNAV is the arrival time series of X-ray photons received by spacecraft. The key issue is to estimate parameters,including time delay, frequency drift and change rate of the observed profile by comparing it with corresponding standard profile in “folding process”. This paper illustrates the equation of equiphase point in time series of photons, and gets the initial approximate value of time delay and frequency drift by Larsson cycle folding and coherent function methods. Higher-order approximation is obtained by least square method, and more precise value is calculated by cyclic iteration. Simulation result indicates our method can achieve high precision even without noise eliminating and smoothing process. The proposed method, maybe kind of complicate, it proves the feasibility of XNAV.
Task-Level Learning from Demonstration and Generation of Action Examples for Hierarchical Control Structure
Authors: Gorbenko Anna
Published: June 2014

We consider the problem of the task-level robot learning from demonstration. In particular, we consider a model that uses the hierarchical control structure. For this model, we propose the problem of selection of action examples. We present a polynomial time algorithm for solution of this problem. Also, we consider some experimental results for task-level learning from demonstration.
The Output Competition Game between FDI Port Enterprises and Incumbent Port Enterprises
Authors: Zhang Wen Fen , Tu Min , Sun Wen Feng
Published: June 2014

With the opening to the outside world, port market entry and exit become relatively free in China. In this context, there will be a game of market entry and anti-entry between foreign direct investment (FDI) port enterprises and incumbent ones. Cournot and Dixit Model were both used to study the output competition game between above two kinds of enterprises. Cournot equilibrium shows that FDI port enterprises' output falls as the its own marginal cost increases but increases as the competitors' marginal cost increases. In Dixit Model, by researching the reaction function based on the production scale, marginal cost and scale cost, the selection conditions of FDI port enterprises' market entry strategy were studied. Results show that enterprises entry strategy selection is relative to the limitation and equilibrium output.
Research on Parameterized Modeling Technology for the Bolted Joints Structure
Authors: Zhai Xue , Zhai Qing Gang , Wang Jian Jun , Fu Xu Guang
Published: June 2014

Bolted joints structures exist in modern mechanical system, it is difficult to simulate the characteristics of the bolted joints accurately and effectively because of their complexity and diversity, which bring a great challenge to the whole structure modeling. Based on theoretical derivation of the bolted joints mechanical characteristics, the parameterized simulation technology and modeling method was used to equivalent simulate the bolted joints and with the example of a certain type of modern turbofan engine to elaborate the application of the parameterized modeling method. The research results have shown that the parameterized modeling method can not only simulate the true characteristics of bolted joints but also can improve calculation efficiency and saving computing cost effectively.
Particle Swarm Optimization Technique for Task-Resource Scheduling for Robotic Clouds
Authors: Popov Vladimir
Published: June 2014

The task-resource scheduling problem is one of the fundamental problems for cloud computing. There are a large number of heuristics based approaches to various scheduling workflow applications. In this paper, we consider the problem for robotic clouds. We propose new method of selection of parameters of a particle swarm optimization algorithm for solution of the task-resource scheduling problem for robotic clouds. In particular, for the prediction of values of the inertia weight we consider genetic algorithms, multilayer perceptron networks with gradient learning algorithm, recurrent neural networks with gradient learning algorithm, and 4-order Runge Kutta neural networks with different learning algorithms. Also, we present experimental results for different intelligent algorithms.
Study on the Grasping Ability and Optimization of Multi-Fingered Robot Hands under Different Postures
Authors: Mo Hai Jun , Zhou Jia Jun , Qiu Hua Rong
Published: June 2014

A multi-fingered hand has been used in the explosive Disposal Robot to improve the disposal ability of explosive. Grasping ability of the multi-fingered hand is a problem with the change of grasping posture. This paper discusses grasping ability of the multi-fingered robot hand. Screw theory and BP neural network are used to optimize the joint angle of the finger. The most favorite grasping posture is calculated when the multi-fingered robot hand can withstand the largest external wrench. In order to guarantee the explosive not to be exploded under the exceeding grasp force, the weight of the explosive the multi-fingered hand can hold is also discussed in this paper. It is an important theoretical guidance for the multi-fingered robot hand handling of hazardous items.
A Preliminary Study on the Sound Absorption of Self-Facing Date Palm Fibers
Authors: Khidir Elwaleed A. , Nikabdullah N. , Nor M.J.M. , Tahir M.F.Mat , Nuawi M.Z.
Published: June 2014

Sound absorption of self-facing natural date palm fibershas been investigated.A single layer sample of the fibers was tested for its sound absorption properties. The sample was then faced with the originally date palm fiber netted structure. Experimental measurements were conducted on the impedance tube at the acoustic lab, Faculty of Engineering, UniversitiKebangsaan Malaysia, to determine the sound absorption coefficient.The single layer was also tested using an aluminum perforated plate, as facing, for comparison purposes.The results show a good improvement in the sound absorption for the self-facing panel for the whole frequency range. However, when using the aluminum perforated panel an improvement in the sound absorption was observed only above 2500 Hz. The effect of introducing air gap thickness was studied. The results show improvement for the sound absorption the low frequency.
Tool Wear Monitoring of High Speed Milling Based on Vibratory Signal Processing
Authors: Abdechafik Hadjadj , Mecheri Kious , Aissa Ameur
Published: June 2014

The objective of this study is to develop a process of treatment of the vibratory signals generated during a horizontal high speed milling process without applying any coolant in order to establish a monitoring system able to improve the machining performance. Thus, many tests were carried out on the horizontal high speed centre (PCI Météor 10), in given cutting conditions, by using a milling cutter with only one insert and measured its frontal wear from its new state that is considered as a reference state until a worn state that is considered as unsuitable for the tool to be used. The results obtained show that the first harmonic follow well the evolution of frontal wear, on another hand a wavelet transform is used for signal processing and is found to be useful for observing the evolution of the wavelet approximations through the cutting tool life. The power and the root mean square (RMS) values of the wavelet transformed signal gave the best results and can be used for tool wear estimation. All this features can constitute the suitable indicators for an effective detection of tool wear and then used for the input parameters of an on-line monitoring system. Nevertheless we noted the remarkable influence of the machining cycle on the quality of measurements by the introduction of a bias on the signal; this phenomenon appears in particular in horizontal milling and in the majority of studies is ignored
Modeling and Simulation of Solar Array Drive Assembly Disturbance Driving a Flexible Load
Authors: Chen Jiang Pan , Cheng Wei , Wang Yun Feng
Published: June 2014

SADA (Solar Array Drive Assembly) is used to drive solar array rotating in spacecraft in order to get the most solar energy. The disturbance generated by SADA driving its load will influence the imaging quality and pointing accuracy of spacecraft. This research focuses on the disturbance properties of SADA driving a flexible load. Firstly, the disturbance model of SADA driving no load is obtained by deducing and simplifying the electromagnetic model of SADA. Secondly, the disturbance model of SADA driving a flexible load (a three-degree of freedom inertia-spring-damping system) is achieved based on the disturbance model of SADA driving no load. Finally, the disturbance model of SADA driving a flexible load is simulated by using Matlab/Simulink toolbox. The simulation result shows that: the disturbance frequencies of SADA driving a flexible load are consisting of all the natural frequencies of the coupled mechanical system and the input frequency of the electrical pulse signal and its harmonic frequencies.
Sensitivity Analysis of Airdrop Condition Parameters Based on Response Surface Method
Authors: Li Jian Yang , Wang Hong Yan , Rui Qiang , Hong Huang Jie
Published: June 2014

The airborne vehicle would suffer from impact at landing. The magnitude of impact and stability of airborne vehicle are constraint parameters of successful landing. There was a lack of scientific explanation on the sensitivity of landing condition parameters. For overcoming the deficiency of classical sensitivity analysis, this paper describes the application of new technology for the sensitivity analysis. Based on the Finite Element and Response Surface method, the research on sensitivity analysis of landing condition parameters was proposed. The results have important significance in the design and optimization of airborne vehicle and airbags system. It can be also provide guidance for airdrop operation.