International Journal of Mechanical Engineering Technologies and Applications最新文献_第4页

STRESS DISTRIBUTION ANALYSIS ON LIGAMENT AUGMENTATION AND RECONSTRUCTION SYSTEM (LARS) USING FINITE ELEMENT METHOD (FEM) 基于有限元法的韧带增强与重建系统应力分布分析

International Journal of Mechanical Engineering Technologies and Applications Pub Date : 2023-01-31 DOI: 10.21776/mechta.2023.004.01.7

F. Aulia, A. A. Sonief, Nafisah Arina Hidayati, S. R

{"title":"STRESS DISTRIBUTION ANALYSIS ON LIGAMENT AUGMENTATION AND RECONSTRUCTION SYSTEM (LARS) USING FINITE ELEMENT METHOD (FEM)","authors":"F. Aulia, A. A. Sonief, Nafisah Arina Hidayati, S. R","doi":"10.21776/mechta.2023.004.01.7","DOIUrl":"https://doi.org/10.21776/mechta.2023.004.01.7","url":null,"abstract":"The Ligament Augmentation and Reconstruction System (LARS) is a prosthetic device used to support knee ligaments severed due to injury. The role of LARS in supporting the knee ligaments is to take over the position of the natural ligaments that have been severed, binding the thigh bone and shin bone. LARS is made from polyethylene terephthalate (PET) material, commonly used in industry. LARS is a prosthetic product widely used to heal ligament injuries. However, despite its everyday use, no one has confirmed whether LARS can support a severed ligament. There has never been a study analyzing this tool, even from the company that makes LARS. They only state that LARS is safe and suitable for healing ligament injuries. Therefore, a LARS analysis is needed to convince the public that the tool is safe. This study analyzed the stress distribution in LARS during the standing-to-squatting condition. The results show an uneven stress distribution between the LARS inside the femur and other parts of the LARS. However, the stress distribution is still in a safe condition that does not directly reduce the strength of the LARS.","PeriodicalId":159477,"journal":{"name":"International Journal of Mechanical Engineering Technologies and Applications","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123542206","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}

引用次数: 0

INCREASING PROFITABILITY OF A MANUFACTURING COMPANY BY USING THE TOTAL PRODUCTIVE MAINTENANCE APPROACH: A REVIEW 通过使用全面生产维护方法提高制造公司的盈利能力:回顾

International Journal of Mechanical Engineering Technologies and Applications Pub Date : 2023-01-31 DOI: 10.21776/mechta.2023.004.01.5

V. Risonarta, Angelia Kusuma Wardhani

{"title":"INCREASING PROFITABILITY OF A MANUFACTURING COMPANY BY USING THE TOTAL PRODUCTIVE MAINTENANCE APPROACH: A REVIEW","authors":"V. Risonarta, Angelia Kusuma Wardhani","doi":"10.21776/mechta.2023.004.01.5","DOIUrl":"https://doi.org/10.21776/mechta.2023.004.01.5","url":null,"abstract":"In the modern world, a company pays serious attention to productivity and efficiency. Several sectors in the manufacturing world are starting to carry out business transformation, particularly those leading to industry 4.0. This circumstance is driven by efforts to achieve higher productivity and an efficient process, mainly after being economically hit by the Covid-19 pandemic. To maintain efficiency, a manufacturing company should maintain its machine and equipment. Total productive maintenance is a system based on the concept of preventive and predictive maintenance. It is designed to prevent loss resulting from many factors, e.g. production interruption due to failures and adjustments, speed loss due to minor stops and speed reductions, and loss due to defects. Total productive maintenance also provides a tool to measure the level of effectiveness of a machine, i.e., overall equipment effectiveness. This review article focusses on the application of total productive maintenance and overall equipment effectiveness to determine the effectiveness of equipment and eliminate the factors that affect the effectiveness of the equipment.","PeriodicalId":159477,"journal":{"name":"International Journal of Mechanical Engineering Technologies and Applications","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116678566","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}

引用次数: 0

EFFECT OF TRACE METAL FECL3 ON BIOGAS PRODUCTION IN INDUSTRIAL WASTEWATER TREATMENT WITH HIGH ORGANIC LOAD 痕量金属fecl3对高有机负荷工业废水处理产气的影响

International Journal of Mechanical Engineering Technologies and Applications Pub Date : 2023-01-31 DOI: 10.21776/mechta.2023.004.01.3

N. Yanqoritha, K. Kuswandi

{"title":"EFFECT OF TRACE METAL FECL3 ON BIOGAS PRODUCTION IN INDUSTRIAL WASTEWATER TREATMENT WITH HIGH ORGANIC LOAD","authors":"N. Yanqoritha, K. Kuswandi","doi":"10.21776/mechta.2023.004.01.3","DOIUrl":"https://doi.org/10.21776/mechta.2023.004.01.3","url":null,"abstract":"Wastewater from the food industry that contains a high organic load, such as wastewater from the tofu manufacturing process, requires an appropriate and efficient treatment system to reduce pollutants before being discharged into water bodies. The most suitable treatment for high organic loads is the anaerobic treatment system. The anaerobic treatment process is a system of suspended media, attached media, or the combination thereof as a hybrid. This study uses a Hybrid Upflow Anaerobic Sludge Blanket (HUASB) reactor with the consideration that this reactor has advantages in maintaining high concentrations of biomass, high operating load rates, good decomposition capabilities, and good solid-liquid separation due to suitable granulation. The purpose of this study was to determine the effect of the addition of the trace metal FeCl3 on biogas production and the ability to remove pollutants in the tofu industrial process wastewater treatment in the HUASB reactor. The operation of the reactor uses variations in the concentration of tofu industrial waste water (75 and 100%) and trace metal concentrations (0.3–0.6 mg/L). The optimum biogas production was obtained with 8190 mL at a concentration of 75% tofu industrial waste water, a trace metal concentration of 0.6 mg/L FeCl3, and removal of COD and TSS of 94.09% and 94.2%, respectively. The role of the trace metal FeCl3in the anaerobic process shows that it is a source of nutrition for increasing the growth of microorganisms in anaerobic systems so that biogas production and pollutant removal are increased.","PeriodicalId":159477,"journal":{"name":"International Journal of Mechanical Engineering Technologies and Applications","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116900627","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}

引用次数: 0

Effect of Firing Holding Time on Density, Porosity, and Hardness, Crucible Materials Based on Evaporation Boats 烧成保温时间对蒸发板坩埚材料密度、孔隙率和硬度的影响

International Journal of Mechanical Engineering Technologies and Applications Pub Date : 2022-07-08 DOI: 10.21776/mechta.2022.003.02.1

Wakhid Muhlisin Hidayat, R. Rusiyanto, R. Widodo, W. Sumbodo, D. F. Fitriyana

{"title":"Effect of Firing Holding Time on Density, Porosity, and Hardness, Crucible Materials Based on Evaporation Boats","authors":"Wakhid Muhlisin Hidayat, R. Rusiyanto, R. Widodo, W. Sumbodo, D. F. Fitriyana","doi":"10.21776/mechta.2022.003.02.1","DOIUrl":"https://doi.org/10.21776/mechta.2022.003.02.1","url":null,"abstract":"Evaporation boats are conductive advanced ceramic composites with the best thermal evaporation source for metalizing applications. The short life time of the evaporation boats causes the metalizing industry to produce large amounts of evaporation boats waste. However, studies on the utilization of evaporation boat waste are still limited. Therefore, this study aims to determine the effect of firing holding time on the density, porosity, and hardness of crucible materials made from evaporation boats waste. The material used in this research is a mixture of evaporation boats waste powder, kaolin, and graphite, with a composition of 50%, 25% and 25%, respectively. During the mixing process, 15% of the water is added. The compacting process carried out with a compaction pressure of 25 MPa. The firing process is carried out at a temperature of 1000oC with holding times of 60, 90, 120, 150, and 180 minutes. The test results show that the holding time of firing has an effect on density, porosity, and hardness. The highest density value was 1,91 g/cm3 at a holding time of 180 minutes, and the lowest was 1,77 g/cm3 at a holding time of 60 minutes. The highest porosity value is 4,10% at a holding time of 60 minutes, and the lowest is 2,16% at a holding time of 180 minutes. The highest hardness value was 12,84 HV at a holding time of 180 minutes, and the lowest was 8,3 HV at a holding time of 60 minutes. The longer holding time in the firing process results in a decrease in the porosity content. The decrease in the porosity content results in an increase in density and hardness of the cruicible specimens.","PeriodicalId":159477,"journal":{"name":"International Journal of Mechanical Engineering Technologies and Applications","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125010080","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}

引用次数: 0

Effect of Firing Temperature on Density, Porosity, Impact Strength, and Macro Structure of Crucible Materials Made from Graphite, Kaolin, and Castable Cement 烧成温度对由石墨、高岭土和浇注水泥制成的坩埚材料密度、孔隙率、冲击强度和宏观结构的影响

International Journal of Mechanical Engineering Technologies and Applications Pub Date : 2022-07-08 DOI: 10.21776/mechta.2022.003.02.3

A. Latif, R. Rusiyanto, S. Sunyoto, Kriswanto Kriswanto, D. F. Fitriyana

{"title":"Effect of Firing Temperature on Density, Porosity, Impact Strength, and Macro Structure of Crucible Materials Made from Graphite, Kaolin, and Castable Cement","authors":"A. Latif, R. Rusiyanto, S. Sunyoto, Kriswanto Kriswanto, D. F. Fitriyana","doi":"10.21776/mechta.2022.003.02.3","DOIUrl":"https://doi.org/10.21776/mechta.2022.003.02.3","url":null,"abstract":"Along with the advancement of modern times and technology, the metal sector plays a critical role in sustaining present growth. The industry's increased competitiveness has hampered the development of numerous small-scale metal casting industries. A crucible made of local graphite can only be used not more than ten melting cycles. This research aims to examine the influence of firing temperature on the density, porosity, impact strength, and macrostructure of graphite, kaolin and castable cement crucible materials. This research applies experiment method at various firing temperature, i.e. 850 °C, 900 °C, 950 °C, 1000 °C and 1050 °C. The crucible materials are made of graphite, kaolin, and castable cement. The firing process employs a heating rate of 5 °C/min and a holding time 2 hours. The results show that firing temperature influences the density, porosity, impact strength and macrostructure of crucible. The highest density at 1.86 grams/cm3 was obtained at the firing temperature of 1050 °C. The lowest porosity value of 41% was attained at firing temperature of 1050 °C. However, this value was still below the crucible index criterion. The highest impact strength of 0.003249 Joule/mm2 occurred for firing temperature of 1050 °C.","PeriodicalId":159477,"journal":{"name":"International Journal of Mechanical Engineering Technologies and Applications","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114924673","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}

引用次数: 0

The Development of an Egg Incubator Prototype with the Use of Heat on the Condenser Side of the Refrigerator 利用冰箱凝汽器侧热源的孵卵器原型的研制

International Journal of Mechanical Engineering Technologies and Applications Pub Date : 2022-07-08 DOI: 10.21776/mechta.2022.003.02.8

Ngurah Putu Budiastawan, I. G. Wiratmaja, I. N. P. Nugraha

{"title":"The Development of an Egg Incubator Prototype with the Use of Heat on the Condenser Side of the Refrigerator","authors":"Ngurah Putu Budiastawan, I. G. Wiratmaja, I. N. P. Nugraha","doi":"10.21776/mechta.2022.003.02.8","DOIUrl":"https://doi.org/10.21776/mechta.2022.003.02.8","url":null,"abstract":"The development for an egg incubator prototype with the use of heat on the condenser side of the refrigerator belongs to Research and Development (R&D) conductment with the aim of knowing the process of developing an egg incubator prototype by using heat on the condenser side of the refrigerator to find out the feasibility level. The method in this study uses Quality Function Deployment (QFD), which is a method used in the early stages of product design and development that makes quality design of a product based on the market quality demand and order of the customer. The prototype development process undergo several stages, including: preliminary survey to the farmer community, design, instrument validity testing, prototype making, media export testing and small group testing. Based on the calculation of the results of the validity test assessment by the instrument content expert, the content validity value of 1 which refers to the instrument validity criteria table is included in the very high validity criteria. Furthermore, based on the calculation of the validation results from the media expert test and the small group test, it gets a percentage of 100% for the media expert test and a percentage of 95.20% for the small group test and refers to the eligibility level qualification table with a scale of 5 in the very appropriate category without the need for revision, so that the developed prototype egg incubator are suitable for use and marketable for the industry.","PeriodicalId":159477,"journal":{"name":"International Journal of Mechanical Engineering Technologies and Applications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125933333","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}

引用次数: 0

Study of Thermal Behavior in Mixed Scrap Tires (ST) And Polypropylene (PP) Plastic Using Thermogravimetry Analysis (TGA) and Differential Scanning Calorimetry (DSC) 用热重分析(TGA)和差示扫描量热法(DSC)研究废旧轮胎(ST)和聚丙烯(PP)混合塑料的热行为

International Journal of Mechanical Engineering Technologies and Applications Pub Date : 2022-07-08 DOI: 10.21776/mechta.2022.003.02.7

Ilyas Sofana, W. Wijayanti, N. Hamidi

{"title":"Study of Thermal Behavior in Mixed Scrap Tires (ST) And Polypropylene (PP) Plastic Using Thermogravimetry Analysis (TGA) and Differential Scanning Calorimetry (DSC)","authors":"Ilyas Sofana, W. Wijayanti, N. Hamidi","doi":"10.21776/mechta.2022.003.02.7","DOIUrl":"https://doi.org/10.21776/mechta.2022.003.02.7","url":null,"abstract":"The world's rapid population growth, technological progress, and industrialization lead to an increase in fossil energy demand such as oil, coal, and natural gas. It is feared that this could lead to a scarcity of fossil energy in the future, therefore the use of alternative energy must be considered. One interesting concept to develop is waste to energy by utilizing plastic waste and also tires on vehicles. This is very possible because the two wastes contain elements of hydrocarbons which are also contained in fossil fuels so they can be processed to become alternative energy which can simultaneously reduce the population of the waste due to the increase in the world's population. This study aims to investigate the thermal behavior of scrap tires (ST) and polypropylene (PP) plastic using thermogravimetry analysis (TGA) and differential scanning calorimetry (DSC). TGA thermogram showed that the feedstock samples were degraded in the temperature range of 331,97 oC to 448,08 oC. The interpretation of the DSC thermogram that showing information about the glass transition point and the melting point of the feedstock polymer will also be presented in this study.","PeriodicalId":159477,"journal":{"name":"International Journal of Mechanical Engineering Technologies and Applications","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127136350","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}

引用次数: 0

Controlling Supplier Supply Stability with High Demand During the Covid-19 Pandemic at PT PQS PT PQS在Covid-19大流行期间控制高需求供应商供应稳定性

International Journal of Mechanical Engineering Technologies and Applications Pub Date : 2022-07-08 DOI: 10.21776/mechta.2022.003.02.2

S. Santoso, Lia Anjela, Uci Alvionita, F. Firmansyah, Khoirul Akbar Etlanda, Ariani Fatmawati

{"title":"Controlling Supplier Supply Stability with High Demand During the Covid-19 Pandemic at PT PQS","authors":"S. Santoso, Lia Anjela, Uci Alvionita, F. Firmansyah, Khoirul Akbar Etlanda, Ariani Fatmawati","doi":"10.21776/mechta.2022.003.02.2","DOIUrl":"https://doi.org/10.21776/mechta.2022.003.02.2","url":null,"abstract":"COVID-19 with a snap into a very influential factor in all sectors of the economy worldwide. The decrease in demand is also strongly felt in the manufacturing sector in Indonesia, even there are some factories were forced to have to lay off thousands of employees because it is not able to pay the salaries of employees. The opposite condition was experienced by PT PQS Indonesia, which experienced an increase in demand by 40% compared to the average demand for 6 months before COVID-19, because some of the company's branches in other countries had stopped production because they had to follow local government policies. Eventually all orders were sent to be produced at PT PQS Indonesia. The increase in demand does not mean that PT PQS Indonesia did not experience obstacles during the COVID-19 pandemic, the problem faced was the decline in delivery performance from suppliers, which impacted on the reduced stock of raw material stock and could even lead to production stops. This is because the suppliers were affected by Covid-19. This is a challenge because PT PQS has dozens of suppliers at home and abroad. To repeat this so that production does not stop, PT PQS Indonesia added a feature to help control supplier delivery performance. In 2018 the average delivery performance is only 60% — 70%, and the management target is 90% for local suppliers and 85% for overseas. This “Supplier Delivery Performance” feature really helps the procurement team to control the arrival of goods and provide information to suppliers related to their delivery performance, as well as being one of the index KPIs to evaluate supplier performance for one year before the Annual Vendor Meeting is held. To create a “Supplier Delivery Performance” index, PT PQS must also create SOPs or standardize them so that all relevant suppliers and procurement teams can easily understand them. ","PeriodicalId":159477,"journal":{"name":"International Journal of Mechanical Engineering Technologies and Applications","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133519576","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}

引用次数: 0

Effect of Compaction Pressure and Sawdust Size on Briquette Made from Ulin Wood (Eusideroxylon Zwageri) and Gelam Wood (Melaleuca Cajuputi) to Combustion Characteristics 压实压力和锯末粒度对乌林木和胶木型煤燃烧特性的影响

International Journal of Mechanical Engineering Technologies and Applications Pub Date : 2022-07-08 DOI: 10.21776/mechta.2022.003.02.4

Bagus Harits Pratama, A. Syarief, M. Saputra, Alif Putra Azis

引用次数: 0

Software Simulation and Experiment for Production of a Pillow Block Using Sand Casting Process 砂型铸造生产抱枕块的软件仿真与试验

International Journal of Mechanical Engineering Technologies and Applications Pub Date : 2022-07-08 DOI: 10.21776/mechta.2022.003.02.5

R. Raharjo, T. Widodo, R. Bintarto, Andika Azhar, Aryasatya Rafli Wibisono, Dhimas Kaukabi D

引用次数: 0