12 Articles Published

1. CYBER VALUE STREAM SYSTEM REDUCED WASTE AND NON-VALUE ADDED OF MANUFACTURING OPERATION

Authors: A.N. AIZAT AHMAD , NOFAFIFAH HUSIN , SULAIMAN HJ. HASAN

Abstract: Lean manufacturing becomes popular as a beneficial way in the pursuit of better system efficiencies in manufacturing environment. Value stream mapping (VSM) was one of the methods that can be used by practitioner to support lean. VSM method is also a simple and straightforward method to identify waste and determined causes of the waste through the value stream mapping method and propose solutions to improve workplace environment. This project is an attempt to computerize the process through the application of VSM. Computerize value stream system (CVSS) is basically a method which is an internet networking system combining with traditional concept of value stream mapping method to be used at manufacturing company to reduce wastes. This paper summarizes the way to apply an internet, online and network based of an efficient computerize value stream system to improve operation value of the manufacturing company. This paper reviews the design of the package that will replace the manual meth

Keywords: value stream mapping, CVSS, lean manufacturing system, increase productivity, waste reduction.

Pages: 1 - 4 | DOI: 10.15224/978-1-63248-059-0-61

2. A PROPOSED MECHANISM FOR THE THICKENING BEHAVIOR OF SIC– POLYETHYLENE GLYCOL ABRASIVE SLURRY DURING SILICON INGOT SLICING INTO WAFERS FOR PHOTOVOLTAIC APPLICATIONS

Authors: RONALD ALLAN S. DE LOS REYES

Abstract: The present study presents a mechanism to account for the transformation of silicon carbide – polyethylene glycol abrasive slurries into thick slurries. Based on comparative observations and the results of other workers, it is proposed that the thickening behavior is the result of siloxane bonds forming bridges that connect the kerf or silicon particles which eventually increases the density of the slurry. It is further suggested that the source for this reaction would be the polyethylene glycol itself due to its possible degradation into smaller compounds after repeated use in the cutting operation.

Keywords: SiC, PEG, thick, slurry, silicon, photovoltaic

Pages: 5 - 8 | DOI: 10.15224/978-1-63248-059-0-62

3. EFFECTIVE OPTIMISATION TECHNIQUE USING BIVARIATE INTERPOLATION METHODS

Authors: LOKESH BS , NILOTPAL BANERJEE , PAVAN KUMAR AV , VINAYAKA N

Abstract: Optimisation is a must for every engineering design so as to increase the performance of every mechanical system. Trial and error methods are mostly used to check for stresses and validate the design which is not optimum. A new optimisation technique is found out by using bivariate interpolation method or surface fit method. From multiple variables, the problem is reduced to 3 variables (x, y, z). The variation of x with respect to z, keeping y constant and variation of y with respect to z, keeping x constant are found out. These sampling points are combined to get the relating surface of z= f(x, y) using Bivariate interpolation methods. The surface plot is obtained and for specific value of z, the 3D surface plot is chopped off, the resulting surface will be optimum curve which satisfies all the design considerations. This method is applicable for all types of problems. In this paper, taking an example of spring, keeping the various parameters like free length, effective no of coils,

Keywords: Diameter of wire (d), Mean diameter of spring (D), Free length (Lf ), Factor of safety (FOS), Spring constant (C), Solid length (Ls ), Wahl stress factor(k), Root Mean Square(RSq), Ultimate stress(G1, G2, G3,G4)

Pages: 9 - 13 | DOI: 10.15224/978-1-63248-059-0-63

4. AN EFFICIENT APPROACH FOR ROBUSTNESS-BASED DESIGN OPTIMIZATION UNDER INTERVAL UNCERTAINTY

Authors: KAIS ZAMAN , PRITHBEY RAJ DEY

Abstract: This paper proposes a methodology for robustnessbased design optimization under both aleatory (i.e., natural or physical variability) and epistemic uncertainty (i.e., imprecise probabilistic information). The proposed formulations specifically deal with epistemic uncertainty arising from multiple interval data. An efficient likelihood-based approach is used to represent the interval uncertainty, which is then used in the framework for robustness-based design optimization to achieve computational efficiency. The proposed robust design optimization methodology is illustrated using a general mathematical example problem

Keywords: Likelihood-based estimation, robust design, interval data, epistemic uncertainty.

Pages: 14 - 18 | DOI: 10.15224/978-1-63248-059-0-64

5. COMPARISON OF MIST GENERATORS BETWEEN TWIN-FLUID WATER SUCTION TYPE AND SINGLE-FLUID SWIRL TYPE

Authors: AKIMARO KAWAHARA , DAIKI GOTO , MICHIO SADATOMI

Abstract: Sadatomi and Kawahara invented a multi-fluids mixer which is categorized as a twin-fluid type but have a merit of water suction type. The mixer is usable to generate microbubbles, etc. besides mists, fine droplets. In the mists generation, pressurized air alone is supplied because water can be sucked automatically by a negative pressure arisen downstream from the orifice in the mixer. The objective of the present study is to compare the performance between the above twin-fluid type atomizer and a common single-fluid swirl type atomizer studied in the present experiments. The comparison results showed that the twin-fluid type was superior to the singe-swirl type in the performance of CO2 adsorption by the mists. The CO2 adsorption rate by the twin-fluid type was about twice. Such results on the experiments and the comparisons are described in this paper

Keywords: atomizer, twin- and single-fluid types, hydraulic performance, CO2 adsorption

Pages: 24 - 28 | DOI: 10.15224/978-1-63248-059-0-66

6. THE LABORATORY OF THE FLEXIBLE MANUFACTURING SYSTEMS WITH ROBOTIZED OPERATION FOR ENVIRONMENT OF DRAWING-FREE PRODUCTION THE CHANGES REALIZED IN AN ASSEMBLY WORKSPACE OF AN ICIM 3000 SYSTEM

Authors: KAROL VELISEK , MICHALA SIMUNOVA , NINA VETRIKOVA

Abstract: This contribution focuses on the laboratory of flexible manufacturing systems with robotized operation for environment of drawing-free production, which is located at the Institute of production technologies. The practical education of drawing-free documentation using the software Catia and Autocad is special focused on the mentioned laboratories. Students create 3D models of parts and whole machine units according the required tasks using the programs of modeling/design and then it is subsequently generated to 2D drawing and NC program. It is possible to realize the production of specified machine parts, units and also their subsequent assembly on the final workplace with using the CNC machines. All of these laboratory facilities are intended not only to help the educational process and motivate students but also to use them in the bachelor and diploma thesis which are supposed to allow students to virtually create the new conceptual designs realized in the each manufacturing and asse

Keywords: component, system, iCIM, desk set, assembly, turning machine, milling machine, assembly workplace

Pages: 29 - 33 | DOI: 10.15224/978-1-63248-059-0-67

7. EMISSION PREDICTION MODEL FOR A MULTIDISCIPLINARY ASSESSMENT FRAMEWORK

Authors: ABAS AB WAHAB , MOHAMMAD FAHMI ABDUL GHAFIR , SITI NUR MARIANI MOHD YUNOS

Abstract: This paper presents the work conducted as part of an effort in developing a multidisciplinary assessment framework for trade off study between technical, economic and environmental aspects of alternative jet fuels application specifically in commercial aircraft. At present, empirical prediction method has been explored so as to be the basis in predicting the amount of emissions that have a huge influence towards the environment. An emission prediction model based on Boeing Fuel Flow Method 2 (BFFM2) has been adopted and its accuracy and applicability has been tested on a specified engine model. The model was then used to evaluate and to compare the amount of emission emitted due to the combustion of alternative fuels, namely Camelina- and Jatropha- synthetic paraffinic kerosene (SPK) with the conventional jet fuel, Jet A. With emphasis on emissions of nitrogen oxides (NOx) and carbon monoxide (CO) at take-off and cruise conditions, the results indicate that the alternative fuels manage

Keywords: engine performance, aviation emissions, nitrogen oxides, carbon monoxide, drop-in fuel, BFFM2

Pages: 34 - 38 | DOI: 10.15224/978-1-63248-059-0-68

8. INVESTIGATION ON A CI ENGINE FUELLED WITH BLENDS OF WASTE TYRE OIL

Authors: D. RAVICHANDRAN , VIJAY DAKHA , K. ABHISHEKK. ABHISHEK , RAVI KUMAR PULI

Abstract: Current ages of science and technology running towards the control of environmental degradation and improvement of energy to meet the rush of rising demand. On the other hand bearing in mind the breeding consumptions of crude reservoirs are across the world. Developing countries like India depend heavily on crude oil import of about thousand barrels per day. Transportation sector consumes the major portion of imports, finding a suitable fuel alternative to diesel is an urgent need. In this regards focus has been gradually shifting towards energy recovery from waste materials which can solve both the problems. One of the major wastes in the automobile sector is automobile tyres. These have an adverse impact on the environment if they are not disposed off properly. Further, tyres are a source of high grade energy hence its improper disposal means wastage of energy. Several methods have been developed to extract energy from waste tyres. One of them is pyrolysis of tyre which produces Tyre

Keywords: Diesel, Waste Tyre Oil, Biodiesel, Compression Ignition Engine, Exhaust Gas Analyser.

Pages: 49 - 53 | DOI: 10.15224/978-1-63248-059-0-70

9. EFFECT OF GRAIN SIZE ON BELT FINISHING PROCESS OF HARDENED STEEL PARTS

Authors: ABDELJABAR KHELLOUKI

Abstract: Belt finishing of hardened steel parts begins to integrate the automotive and the aeronautic industry as an alternative to classical superfinishing process. However his practice in industry is always uncertain because research in this topic is at the beginning. This paper is a contribution to the understanding of belt finishing mechanisms by using an experimental approach to study especially the effect of grain size on roughness and on specific energy. It was demonstrated that with the increase of grain size the roughness increases while the specific energy decreases. However the grain size must be chosen strictly to have a good surface topography. Moreover with small grains, friction and ploughing is larger than cutting and specific energy is very important. With large grains specific energy is small and spent essentially in cutting.

Keywords: belt finishing, grain size, specific energy, abrasive belt, hardened steel

Pages: 54 - 57 | DOI: 10.15224/978-1-63248-059-0-71

10. ON THE POSSIBILITIES AND THE ADVANTAGES OF ROBOT OFF-LINE PROGRAMMING TEACHING OF OFF-LINE PROGRAMMING METHODS AS A TOOL TO FURTHER INDUSTRIAL IMPLEMENTATION UTILIZATION

Authors: KAROL VELISEK , MICHALA SIMUNOVA , DAYNIER ROLANDO DELGADO SOBRINO

Abstract: Current trend in automation area is focused to the innovation in all fields of the technologies and technological devices. Probably industrial robots and manipulators belong to development too. Industrial robots and manipulators belong to progressive elements of automation. Modern concept uses the offline programming as a tool integration of the virtual CAD models into programming environment and implementation to the education process. Offline programming carries a lot of advantages such as possibility of the programming without real robot system, possibility of the collision state debugging. Implementation of CAD models in virtual environment of Robot studio achieves better workplace station of creating robotic system and also it generates rather trajectories of the robot path in this system.

Keywords: Industrial robot, off-line programming, CAD model, education,

Pages: 58 - 62 | DOI: 10.15224/978-1-63248-059-0-91

11. SINGLE-PHASE AND TWO-PHASE PRESSURE DROPS ACROSS SUDDEN CONTRACTION IN HORIZONTAL RECTANGULAR MINICHANNEL

Authors: AGUS SANTOSO , AKIMARO KAWAHARA , DAIKI GOTO , TOMOAKI TAKEHIRA

Abstract: This paper presents experimental investigations on the effects of liquid properties on pressure drop for both single-phase and two-phase flows through sudden contraction in horizontal rectangular minichannel. In order to know the effects, water and viscoelastic liquid, namely 0.1 wt% polyacrylamide (PAM) aqueous solution are selected as the working liquid, while air as the working gas. Liquid single-phase and air-liquid twophase flow experiments were conducted at room temperature using a horizontal rectangular mini-channel with a sudden contraction. The cross-sectional dimensions of the channel with the height (H), the width (W) and the hydraulic diameter (DH) for the narrow channel are 2.79 mm, 3.09 mm and 2.94 mm, while those for the wide channel are 2.95 mm, 5.98 mm and 3.95 mm. The local pressure upstream and downstream from the contraction were measured with calibrated pressure transducer to determine the pressure drop due to the contraction. As an analysis, the resulting data on

Keywords: rectangular minichannel, sudden contraction

Pages: 19 - 23 | DOI: 10.15224/978-1-63248-059-0-65

12. MODEL BASED SOLVER APPLICATION (MBSA) FOR MANUFACTURING INDUSTRIES

Authors: NAGAPPAN ANNAMALAI , SHAHRUL KAMARUDDIN , TS YEOH

Abstract: Problem solving is a fundamental element in retaining and achieving operational excellence of a manufacturing industry. There are numerous problem solving models are being used widely but the problem is to determine an optimal or a poka-yoke solution according to the constraints of respective manufacturing industry. Nevertheless, optimal solution for problems has become a great challenge in view of the fact that existing problem solving model is highly vague where at times it is being neglected either due to ineffective or too complex. This leads to individual getting confused and not able to devote their time successfully on any of the problem solving models. The most common approach of problem solving model is via trial-error or insight pattern where problems are being tackled and resolved in a quick manner, which it eventually contains the problem, instead of identifying the actual root cause and resolve the problem for good. The paper will discuss on a newly developed model based s

Keywords: problem solving, manufacturing, problem definition, optimal solution

Pages: 39 - 48 | DOI: 10.15224/978-1-63248-059-0-69