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PENGARUH FRAKSI VOLUME TERHADAP KEKUATAN MEKANIK PADA KOMPOSIT BERPENGUAT SERAT POHON TERAP MENGGUNAKAN RESIN POLYSTER BQTN-157 Abdullah hamid; Masdani Masdani; Idiar Idiar
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

Composite is a system composed by mixing two or more different materials, in form and composition. Between two or more materials are insoluble in each other. Composites are very influential on the mechanical properties. The most influential factors are fiber fraction, fiber length and immersion used. This study aims to examine the effect of volume fraction variations on the mechanical properties of applied tree bark fiber reinforced composites. This study used matrix and fiber volume fraction 5% : 95%, 6% : 94%, 7% : 93% with 5% NaOH for 2 hours. The material used is fiber. Applied tree bark. Composites are made using the hand lay up method. The tests carried out were tensile test and Impact Charpy test with ASTM D638 Type 1 tensile test standard and ISO-179 impact test. The result of the highest tensile strength at 7% volume fraction that is equal to 36.32 Mpa. While the results of the smallest tensile strength at 5% volume fraction that is equal to 28.74 Mpa. And the results of the highest composite impact test at 7% volume fraction that is 0.051198 Joul/mm2. Meanwhile, the lowest impact strength was at 5% volume fraction with a value of 0.009652 Joul/mm2.
PENGARUH VARIASI FRAKSI VOLUME DAN LAMA PERLAKUAN NAOH PADA KOMPSIT BERPENGUAT SERAT TEBU DENGAN MATRIKS POLYESTER TERHADAP KEKUATAN TARIK DAN IMPACT sayyid osama; Masdani Masdani; Erwansyah Erwansyah
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

Material development is expected to increase efficiency in the field of engineering, judging from the current good material is a material that meets several main standards such as composites. Composite is a material consisting of a mixture of two or more main elements, and composites have a light weight, high strength, corrosion resistance and cheaper price. Presearch aims to find out the effect of variations in volume fraction and length of difference in immersion ofsugarcane fiber using NaOH solution against tensile strength and impact, so that it can be used as potential information about fiber. Sugarcane that can produce a new quality material. The study used variations in volume fractions of 10%, 15% and 20% as well as the length of immersion using NaOH for 30, 60 and 90 minutes. From the tests that have been done, the highest average tensile test value is in the volume fraction of 15% and the length of NaOH treatment of 60 minutes is 36.73MPa and the lowest average value is in the volume fraction of 20% and the length of NaOH treatment is 90 minutes by 21.16 MPa. The maximum average value on the impact test is at a volume fraction of 20% and the length of naOH treatment of 60 minutes is 0.07290 joules / mm², and the average minimum value is in the volume fraction of 10% and the length of naOH treatment is 90 minutes by 0.02849 joules / mm².
RANCANG BANGUN MESIN PENGUPAS SABUT KELAPA Sastra Setiawan; Ego fernando; Khadadad Azizi Costacurta; Yang Fitri Arriyani; Masdani Masdani
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 02 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

Coconut fruit has many benefits, ranging from food, drinks, medicine to cosmetics. Almost all parts can be used such as, roots, wood, coconut leaves, shells, young coconut water and coir. Coir is used for brooms and crafts such as flower pots, hangers, bags and others. The process of stripping coconut husk in Bangka Belitung still uses a lot of traditional tools such as: machetes / machetes, large scissors and crowbars, so the process of stripping coconut husk requires a lot of energy, requires a long time, requires special skills and the risk of work accidents. So, in this final project, a coconut husk peeling machine was designed and made by prioritizing work safety, ergonomics and fast in peeling coconut husk. This coconut husk peeling machine uses 2 rollers in the form of a cylinder with 16 plates attached to the peeling pipe, 12 flat plates and 4 jagged plates. The two rollers rotate in the opposite direction aiming to tear the coconut husk. The engine is driven by a 6.5 PK gasoline combustion motor with a maximum rotational speed of 3600 RPM passed by a sprocket chain to the gearbox input with a sprocket ratio of 1:3 rotational speed and the power coming out of the gearbox 1:40, the power coming out of the gearbox output is passed using a chain transmission and sprocket connected by a rolling roller. This machine is able to peel coconut husk with the longest time of 23 seconds and the fastest time of 13 seconds.
PEMANFAATAN MESIN PENGERING MINYAK DALAM PENINGKATAN PRODUKSI USAHA KERIPIK SINGKONG CAHAYA BANGKA Yudi Oktriadi; Husman Husman; Masdani Masdani; Sukanto Sukanto; Achmad Afriadi; Febrian Alfarisyi; Fajar Abdallah
Jurnal Pengabdian Masyarakat Polmanbabel Vol. 3 No. 02 (2023): DULANG : Jurnal Pengabdian Kepada Masyarakat
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/dulang.v3i02.309

Abstract

Based on direct observation with partners, the problems faced are that in the process of drying the oil of cassava chips, they still use manual methods by drying them on a container for 15 minutes with the amount of cassava chips dried as much as 2 kg and this manual process still leaves oil on the cassava chips until they are marketed which in the future will make the cassava chips quickly unfit for consumption. The problem faced by the cassava chip business partner “Cahaya Bangka” is that they cannot be stored longer / not durable. The expected benefits of the partner can increase the amount of production, faster production time, and also produce more products and last longer/durable. The influence on sales is quite large because buyers are not brave enough to buy cassava chips in large quantities. The solution given to partners is to utilize a cassava chip oil dryer machine with the implementation method of providing short training on the operation and maintenance of the cassava chip oil dryer machine so that partners understand how to use and maintain the machine properly and correctly. With the cassava chip oil dryer machine, the drying process of cassava chips with a total of 10 kg of cassava chips in 4 minutes can increase the amount of production, the production process time becomes faster and the cassava chips become more durable than before.
Desain dan Fabrikasi Mesin Pengupas Kelapa Sistem Pengupas Bergigi Yang Fitri Arriyani; Masdani Masdani; Sastra Setiawan; Ego Fernando; Khodad Azizi Costacurta
Manutech : Jurnal Teknologi Manufaktur Vol. 15 No. 01 (2023): Manutech: Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/manutech.v15i01.257

Abstract

One part of the coconut that can be utilized and has economic value is the coconut husk. The process of peeling coconut coir must be carried out by someone who has certain skills and this process has a fairly high risk of work accidents. The purpose of this study was to design a coconut coir peeling machine to make it easier for workers to strip and to analyze the costs required to operate the machine. This machine can help the process of peeling coconut coir so that the coir can be separated from the coconut shell, can speed up the stripping time, and make the job of peeling coconut coir easier. Making the machine design begins with making an alternative concept for the stripping system, selecting alternative concepts, making a complete design, and the machine manufacturing process. The selection of alternative design concepts is assessed from the economic aspect and the number of components. Parts of the stripping system are designed with teeth so that the coir can be clamped on the toothed shaft and does not experience slip so as to speed up the stripping process. The coconut coir peeling machine consists of 47 component parts with engine dimensions of 960 mm x 400 mm x 1136 mm and uses a 6.5 HP motor with gasoline. The average capacity of the coir peeling machine is 216 pieces/hour. The estimated fixed cost of using the machine is IDR 2,449,440/year, variable costs are IDR 20,855/hour, basic costs are IDR 101.31/piece, and break even points are 6,071.25 pieces/year.