Allen key merupakan alat bantu untuk mengencangkan, melonggarkan dan melepas baut bekepala segi enam. Alat bantu harus mampu menahan beban dan menahan kontak. Simulasi pemodelan allen key dilakukan untuk mengetahui pengaruh deformasi dan angka keamanan dari sebuah desain. Software ANSYS R19.2 membantu untuk menganalisis pemodelan. Parameter deformasi, regangan, tegangan mengalami kenaikan disetiap variasi pembebanan dengan nilai terbesar pada variasi beban 325N nilai deformasi sekitar 8,9135mm, Regangan sebesar 2,2 x 10-3mm, tegangannya sebesar 4,54 x 102Mpa. Angka keamanan setiap variasi pembebanan adalah 15, nilai tersebut menunjukkan desain, variasi yang diberikan dan jenis material aman untuk digunakan sampai pembebanan 325N.
One of the agricultural technologies that have evolved recently is the weeding machine. This device was developed to aid farmers in the weed-control procedure. The engine frame is one of the primary elements of the weed wacker. The most crucial component of agricultural equipment is the frame or chassis since it serves as the foundation for mounting other parts. To examine the stress and strength of the frame, this study models the frame of a power weeder machine utilizing finite element analysis using the SolidWorks 2022 program. A total load of 120 N is applied to the AISI 316L used for the frame. The analysis's findings indicate that the maximum von Mises stress value is about 2.51 107N/m2, the greatest deformation is 0.556 mm, and the safety factor is 6.8. With AISI 316L material, the frame design of the power weeder machine in this study is safe to endure up to 140 N.
Manual, semi-conventional, and conventional weed eradication are the three forms of weed eradication utilized. Farmers benefit greatly from the usage of weeding equipment in combating pests in the fields. The blade you use determines how successful you are at weeding. As a result, it is required to examine the weeding weeds blade. With a tetrahedral mesh, simulation utilizing the finite element analysis approach allows for the optimization of design, computation, and prediction of material strength. The goal of this research was to figure out how much von Mises's stress, deformation, and safety factor were worth. ANSYS Workbench software was used to simulate various loadings of 10N, 25N, and 50N. The highest von Mises stress created by simulation of modelling weed blades at 10N, 25N, and 50N loads is around 2.95x10-2 MPa, 7.38x10-2 MPa, and 0.14755 MPa, respectively. Each of the safety factors is 15, and the maximum deformation value is 4.26x10-7mm; 1.06x10-6mm; 2.13x10-6mm. The safety factor indicates that the weed weeding knife design is safe to use up to 50N loading.
The development of science and technology related to bone implant material, researchers want to develop materials that have properties near human bones and improve the quality. This study was conducted to determine the composition of the mixture that can pass nozzle at room temperature. It is expected that in this study, the mixture is able to pass through the small nozzle size so that it can print specimens precisely according to the size of the design to be printed. Output mixture through a nozzle is said well if the output is continuous and homogeneous. The quality of the composition of the mixture, the material output from the nozzle will be printed by ASTM F451-95 and compressive test. This mixture consists of polymethylmethacrylate (PMMA), methylmethacrylate (MMA) and hydroxyapatite (HA) by mixing methods manually. PMMA and MMA used in the type of heat curing, while HA derived from fish scales. Through several experiments, there is composition that can pass nozzle and have a high compressive strength value, that is composition PMMA : MMA instead of 1 : 1 (w/w) with mixture 20% HA and have compressive strength value 31,20 MPa, the second composition PMMA : MMA instead of 2 : 1 (w/v) with mixture 10% HA and have compressive strength value 25,62 MPa. This composition was chosen for further research with the Portabee Kit machine.
This study uses the Material Requirement Planning method. By measuring lot orders Lot For Lot (LFL), Economic Order Quantity (EOQ), Period Order Quantity (POQ), and Silver Meal (SM), the purpose of this study is to determine how UMKM Cening Jaya planning the supply of raw materials for production. To determine the best method for Cening Jaya UMKM to plan their raw material inventory. The research method used is descriptive and qualitative. The data collection techniques used are interviews, observation and documentation. The data analysis technique used in this research is to collect information about the amount of sales data in May 2020 to April 2021, analyze the data using lot orders Lot For Lot (LFL), Economic Order Quantity (EOQ), Period Order Quantity (POQ), Silver Meal (SM). The results of the research on raw material planning with lot size Lot For Lot of raw material needs in the following month or once a month, Economic Order Quantity by determining raw material orders of 224 kg once ordered, Period Order Quantity by determining raw material orders every 3 months, Silver The meal for determining the order of raw material for coffee beans is 1,108 kg once ordered within 1 year. From the conclusion above, Cening Jaya UMKM is better to use lot size Period Order Quantity with orderquantity as much as 2 months to order with a total cost of Rp. 2.007.000 due to avoid shortage of raw materials.
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