Journal of Mechanical Engineering Research and Developments最新文献

{"title":"SOLAR THERMAL: TECHNICAL CHALLENGES AND SOLUTIONS FOR POWER GENERATION","authors":"H. Al-Kayiem","doi":"10.26480/jmerd.04.2019.269.271","DOIUrl":"https://doi.org/10.26480/jmerd.04.2019.269.271","url":null,"abstract":"","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47930642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A REVIEW OF IMPLEMENTATION ON ENVIRONMENTAL MANAGEMENT SYSTEM (EMS) IN SABAH","authors":"M. Adzrie, J. Renessh","doi":"10.26480/jmerd.04.2019.260.263","DOIUrl":"https://doi.org/10.26480/jmerd.04.2019.260.263","url":null,"abstract":"","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45381926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE EFFECTS OF SPINDLE SPEED AND FEED RATE ON HOLE QUALITY IN DRILLING OPERATION: THE TAGUCHI BASED DESIGN OF EXPERIMENT","authors":"Na Mohd-Lair, M. F. I. Mohd-Shahdun, A. Mohd-Tahir, J. Paulus-Dua","doi":"10.26480/jmerd.05.2019.187.189","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.187.189","url":null,"abstract":"In manufacturing, the quality of holes produced is very important. For instance, the hole size may determine the ability of two parts to be assembled. At the same time, the hole surface may also contribute to the ease in assembly process. However, the quality of holes produced in drilling operation is affected by drilling parameters such as the drill speed and feed rate. Therefore, it is necessary to determine the suitable drilling parameters’ setting such that optimum hole quality can be achieved. This project aimed to determine the effect of drill speeds and feed rates on material surface roughness and radius accuracy. The experiment was designed based on the Taguchi method. The drilling operation was conducted using Okuma CNC milling machine on mild steel plate with different settings of spindle speeds and feed rates. The experimental results showed that the spindle speed affects significantly the surface roughness and radius accuracy. Whereas, the feed rate is only affect significantly the surface roughness. Besides, it is found that the optimum spindle speed and feed rate are 500 rpm and 150 mm/min to produce the minimum surface roughness. At the same time, the analysis also shown that the optimum spindle speed and feed rate to produce maximum radius accuracy are at 2000 rpm and 150 mm/min.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42376959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"IMPROVISATION OF NON-CONFORMANCE MANAGEMENT IN A SMALL AEROSPACE MANUFACTURING INDUSTRY","authors":"N. Zulkifli, Kausalyah Thevendram","doi":"10.26480/jmerd.05.2019.190.193","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.190.193","url":null,"abstract":"This study is specifically concerned on the improvisation of non-conformance management process in a small aerospace manufacturing industry. Robust actions on root cause analysis and corrective actions (RCCA) is vital to achieve good yield and sustain the business. Hence, in the present study, the key objective is to identify the wastes in the non-conformance process flow and improvise the overall non-conformance management process. There were three specific objectives determined in order to achieve the main objective. Firstly, a model database was established to capture all the data and linked to populate graphs and charts for analysis purpose. Some of the significant QC tools were implemented as part of the enhancement process. The second objective is to improvise and integrate robust root cause analysis method using the 5-Why tool and Fishbone Diagram tool. Finally, the third objective is to improve the effectiveness of corrective action monitoring and verification of the process. The results from these improvisations were analysed in terms of the overall reject rate, repetition of defects, parts per million and finally the effectiveness of the corrective action. The improvements resulted in a reduction of scrap rate from 0.8% to 0.6% which eventually met the company’s objective. Significant changes were observed from the variations implemented that would benefit small scale companies in the future.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45930209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"NUMERICAL ANALYSIS OF SOLAR TOWER SYSTEM UTILIZED WITH FLAT PLATE AND POROUS ABSORBER","authors":"Sarmad A. Abdul Hussein, Mohammed A. Nima","doi":"10.26480/jmerd.05.2019.216.223","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.216.223","url":null,"abstract":"The performance of solar updraft tower investigates numerically by comparing between two solar collectors with and without porous absorber flat plate. In this study, copper metal foam (10 and 40) PPI at the same porosity (0.9) are used as an absorber plate. The effect of the absorbing porous medium is studied to increase the air flow towards the updraft tower by tilting of the porous absorber at an angle (2° and 6°) from the horizontal line for (10 and 40) PPI and compared with the horizontal absorber flat plate. To simulate the physical quantities inside the porous medium, at steady state, symmetry, three dimensional, Darcy model and energy numerical model with local thermal equilibrium (LTE) assumption are adopted and numerical models is approximated by a RNG (Re-Normalization Group) k- ϵ turbulent model and discrete ordinates (DO) radiation model equations. The numerical study is analyzed by Fluent software package (version 18.2) to solve the governing equations. The results showed that the tilting of a porous absorber plate at an angle (2° and 6°) from the horizontal line lead to increase in the mass flow rate inside the solar updraft tower and the maximum performance is found by using 40 PPI at tilt angle 2°.The performance of solar updraft tower investigates numerically by comparing between two solar collectors with and without porous absorber flat plate. In this study, copper metal foam (10 and 40) PPI at the same porosity (0.9) are used as an absorber plate. The effect of the absorbing porous medium is studied to increase the air flow towards the updraft tower by tilting of the porous absorber at an angle (2° and 6°) from the horizontal line for (10 and 40) PPI and compared with the horizontal absorber flat plate. To simulate the physical quantities inside the porous medium, at steady state, symmetry, three dimensional, Darcy model and energy numerical model with local thermal equilibrium (LTE) assumption are adopted and numerical models is approximated by a RNG (Re-Normalization Group) k- ϵ turbulent model and discrete ordinates (DO) radiation model equations. The numerical study is analyzed by Fluent software package (version 18.2) to solve the governing equations. The results showed that the tilting of a porous absorber plate at an angle (2° and 6°) from the horizontal line lead to increase in the mass flow rate inside the solar updraft tower and the maximum performance is found by using 40 PPI at tilt angle 2°.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46641945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MELT BLOWING PROCESS CONDITIONS FOR NANOFIBERS OF POLYMERS FOR OIL-WATER SEPARATION IN MARINE OIL SPILLS CLEAN-UP APPLICATIONS: A SHORT REVIEW","authors":"Z. Kamin, R. Sarbatly, D. Krishnaiah, A. Tanioka, M. Takahashi","doi":"10.26480/jmerd.05.2019.205.210","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.205.210","url":null,"abstract":"The development of oil and gas industries has resulted in environmental issues, such as oil pollution. Oil pollution in a marine environment, poses significant threats to not only coastal marine life, but also to the social economic activities of community living in the nearby areas. The spreading of the oil could be controlled efficiently using sorbents such as nanofiber, due to its high specific surface area, high porosity, small diameter, and small pore sizes properties. Common approach to produce nanofiber is by using electrospinning technique however, this technique has low productivity and requires a post treatment for solvent removal. However, a melt blowing technique is an alternative to electrospinning as it is highly productive and does not require any solvent. The mass production of nanofiber fulfils the demand of the material during an oil spill clean-up operation. Therefore, this review discusses the influence of melt blowing process conditions such as die, polymer, air and collector, on the properties of nanofiber targeted for oil-water separation for the application of oil spill clean-up.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45770224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"STUDIES ON THE EFFECTS OF MULTIPASS WELDING ON MECHANICAL PROPERTIES OF MILD STEEL ON SMAW JOINT","authors":"Mohd Tahir Abdullah, Mohd Lair Noor Ajian, P. Sarah","doi":"10.26480/jmerd.05.2019.202.204","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.202.204","url":null,"abstract":"The modern industries are still relying on welding to join two metals by fusion between the base metal and the filler material. In this Research, the focus is the multi-pass welding, as this technique is used when it exceeds the limitations of two-pass welding technique and is widely used in the industry like oil and gas, constructions and productions. The study on the effects of multi-pass welding on the mechanical properties of mild steel on shielded metal arc welding (SMAW) joint will unravel a better understanding on multi-pass welding by different types of filler material and number of welding passes. The design of experiment (DOE) for this study is two-level ANOVA which will be an essential tool to determine the outcome of this study. In detail, two-level ANOVA technique is used where two types of electrodes (E6013 and E7016) and two different numbers of passes (3 passes and 5 passes). The base material for this study is mild steel as it has good weldability and the specimens will undergo tensile and hardness test in order to obtain experimental results. After all the results are taken, all data computed and analysed using full factorial design of experiment. The outcome of the multi-pass study can be concluded that there are significant differences in the factors that were analysed. The interaction between electrode and passes shows that the interaction is not parallel with each other. Tensile strength and hardness of welded metal however there are no differences in hardness when the passes increased. The results for Rockwell Hardness test shows that the highest hardness recorded is 83.69 HRG for 3 passes, while UTS recorded was 569.46 MPa for 5 passes, both using electrode E7016. Based on the response optimizer done with Full Factorial Design of Experiment, electrode E7016 is the ideal electrode used in this study for hardness and tensile","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47887870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ACIDITY, SOLUBILITY AND CHEMICAL UTILIZATION OF LOCAL LEUCAENA LEUCOCEPHALA STEM BARK","authors":"R. Salim, J. Asik, M. Sarjadi","doi":"10.26480/jmerd.05.2019.194.201","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.194.201","url":null,"abstract":"Acidity, solubility and chemical properties of eleven years old of Leucaena leucocephala stem bark were investigated. The bark was peeled from the stem of tree and gentle washed in tap water to remove dirt before air-dried in the laboratory at room temperature (24 + 3°C) for 2-3 weeks. The bark was minced into coarse powder and grind to pass BS 250μm mesh sieve. After air-dried for several days, the samples were conducted to chemical analyses (ash content and pH value; solubility in 1%NaOH, hot and cold water solubility; extractive, cellulose and lignin content) based on ASTM standard methods. The results show that L. leucocephala stem bark considered as least acidic (pH value 6.04) and high ash content (15.76%). The solubility of bark components was higher in 1% NaOH (41.36%) compared to hot water (14.45%) and cold water (11.06%). Holocellulose and hemicellulose was 132.85% and 103.66%, respectively. Lignin was the major composition in L. leucocephala stem bark (38.4%) followed by cellulose (29.19%) and extractive (8.39%). This study indicated that the bark of L. leucocephala had less acidity. The high solubility of the bark potential as a carbohydrate resource, while the chemical component of the bark might influence rapid combustion during pyrolysis.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44069848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ENERGY AUDIT OF SUBCRITICAL PLANT PERFORMANCE WITH DIFFERENT TYPES OF SUBBITUMINOUS COAL","authors":"A. Nuraini, S. Salmi, A. Hairuddin","doi":"10.26480/jmerd.04.2019.264.268","DOIUrl":"https://doi.org/10.26480/jmerd.04.2019.264.268","url":null,"abstract":"","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45719184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"INDUSTRIAL TRACKING CAMERA AND PRODUCT VISION DETECTION SYSTEM","authors":"Wisam T. Abbood, Hiba K. Hussein, O. Abdullah","doi":"10.26480/jmerd.04.2019.277.280","DOIUrl":"https://doi.org/10.26480/jmerd.04.2019.277.280","url":null,"abstract":"Many industrial and commercial applications today are beginning to use autonomous systems to increase productivity and reduce costs for production and manpower. Most of these applications are only semi- autonomous, it still needs assistance from a human to start up or receive continual instructions. It can be improve the productivity using the image processing techniques based on the camera processing capabilities and more efficient vehicles. This research paper describes a vision tracking system platform and USB camera that used to make a distinguishing operation applying to real-time video tracking processing for moving product. The industrial camera tracking system is designed to provide tracking and sorting for the products based on the shape quality criterion, which is means reject the product with low quality (bad shape). The platform is used to distinguish different shapes of products and tracking operation. The received video is displayed in the computer through the acquisition video, taking advantage of the toolkit for acquisition video and image processing. It can be determined where the place of the part and detect the product, and then send information to the control system to remove unwanted product.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42538923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}