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All Journal Manutech : Jurnal Teknologi Manufaktur Prosiding Seminar Nasional Inovasi Teknologi Terapan Jurnal Inovasi Teknologi Terapan

Yuli Dharta

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Author-ID : 2484689

Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Articles

Rancang Bangun Mekanisme Fess Sebagai Alat Pembanding Pengaruh Geometri Flywheel Terhadap Energi Kinetik Yang Dihasilkan Adhe Anggry; Yuli Dharta; Andri Wiguna; Armada Armada; Ririn Martasari
Manutech : Jurnal Teknologi Manufaktur Vol. 8 No. 02 (2016): Manutech : Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Recent days, more and more people are becoming interested in "free-energy". "Free-energy" means the energy sources used freely without to pay. The sources of "free-energy" are sunlight, rainfall, wind energy, wave power, and tidal power. There are other sources of power such as gravity, electrical charge in the atmosphere and ionosphere, and a mass. FESS (Flywheel Energy Storage System) is an attempt to store kinetic energy generated from the rotation flywheel in which the electrical power output from the generator as an input to the motor. Mass flywheel greatly affects the amount of power generated by a generator which will serve as a flywheel device or distributors of energy while at the induction generator to eventually convert mechanical energy into electrical energy and vice versa. In this system design becomes very important for the flywheel can store the kinetic energy. This research aims to design and build mechanisms as a means of comparison FESS flywheel effect of the geometry of the kinetic energy generated. The research method is done by making three different geometric design flywheels, and then analyzed with the help of FESS. From the experimental results, flywheel 1 with a ringtype web-concave generate kinetic energy of 312.30 J and specific energy of 31.23 J / kg, at the flywheel 2 which is type-straight arm kinetic energy gained by 316.73 J and energy specific of 31.67 J / kg and flywheel 3 with a ring-type web-straight kinetic energy obtained by 284.997 J and specific energy of 28.49 J / kg. From the research data we can conclude that each design geometry flywheel has a different contribution to the performance of energy storage.

Tinjauan Performansi Bubut Doll LT13 Terhadap Penyimpangan Kebulatan Benda Kerja Ariyanto Ariyanto; Husman Husman; Yuli Dharta
Manutech : Jurnal Teknologi Manufaktur Vol. 9 No. 02 (2017): Manutech : Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

The industry manufacture with high quality and able to pruduce the workpicece with high quality In industry manufacture are very necessary. The use of high quality machines should be supported by the ability to operate and the ability to perform maintenance, this ability is useful to maintain the condition of the machine in order to produce good quality workpieces. Politeknik Manufaktur Negeri Bangka Belitung has several high quality machine tools, one type of machine tools usually use is lathe machine doall LT13 with total have six units. this machine Used to support education and to produce spare parts. Doall LT13 lathes have been used for 22 years, during that period there may be deviation of machine geometry, deviations that occur can lead to decreased quality of the resulting workpiece. This study aims to determine the feasibility of the machine by measuring the roundness of the spicemen of the process of turning, the roundness of the specimen is analyzed by using the minimum circle method. From the roundness testing performed on the doall lt 13 the result? that can be achieved as follows 0,082 mm at lathe number 8, 0,073 mm at lathe number 5, 0,057 mm at lathe number 7, 0,051 mm at lathe? number 2, 0,048 mm at lathe number 6 and 0,046 mm at lathe number 3.

Penggunaan Metode Particle Swarm Optimization (PSO) pada Optimasi Multirespon Gaya Tekan dan Momen Torsi Penggurdian Material Komposit Glass Fiber Reinforce Polymer (GFRP) yang ditumpuk dengan Material Stainless Steel (SS) Angga Sateria; Indra Dwi Saputra; Yuli Dharta
Manutech : Jurnal Teknologi Manufaktur Vol. 10 No. 01 (2018): Manutech : Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

The Particle Swarm Optimization (PSO) method is one of the methods used for multirespon optimization in the manufacturing process. In this research, the material used is Glass fiber reinforced polymer (GFRP) composite material which is stacked with stainless steel material. The machining process used is a drilling process conducted on a vertical CNC machine Brother TC-22A-O. The thrust force and torque is the response used to evaluate the performance of the drilling process. The quality characteristics of this response "the smaller the better". The aim of this study was to identify the combination of process parameters to achieve the performance characteristics required in drilling process the GFRP-SS material using Particle Swarm Optimization methode (PSO). The three process parameters i.e. point angle, spindle speed, and feeding speed is used as a process parameter. Point angle was set at two different levels, while the other two were set at three different levels. Therefore, the 2 x 3 x 3 factorial is used as the experimental design. The experiments were replicated two times. The minimum thrust force and torque could be obtained by using point angle, spindle speed, and feeding speed are 118o, 2330 rpm, and 65 mm/minrespectively.

Potensi Pengembangan Komposit Berpenguat Serat Kulit Gaharu Sebagai Material Pengganti Fiberglass Pada Pembuatan Dashboard Masdani Masdani; Yuli Dharta
Manutech : Jurnal Teknologi Manufaktur Vol. 10 No. 01 (2018): Manutech : Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

The development of industrial in the utilization of composites as a substitute of metal materials that are used is fiberglass. However, fiberglass is considered not environmentally friendly because difficult to decipher. The technology advances, it is now widely used from composite materials with natural fibers.This research was conducted to obtain data about mechanical ability in the tensile strength, impact strength and physical form of Gaharu skin fibers using polyester matrix BQTN 157 with volume fraction variations made by hand lay-up method. This research is expected to be useful in automotive, manufacturing industry and household appliances are environmentally friendly. The maximum value of tensile strength is 34.574 MPa in 45% fiber volume fraction. However, there is a decrease in the tensile strength value in the 50% fiber volume fraction, which is 22,635 MPa, this is due to the large amount of fiber content so that the matrix spread to the fiber is uneven. The maximum impact strength value is 62.76 kJ / m2 at 50% fiber volume percentage. Based on the results of testing the comparison of the fiber and matrix volume fractions greatly affect the tensile strength and impact. The results show tensile and impact tests have met the plastic standards used car dashboards.

PENGARUH VARIASI ARUS BUSUR LISTRIK PENGELASAN GMAW TERHADAP KEKUATAN IMPAK PADA BAJA KARBON RENDAH ST 37 Bilal Nur Ikhsan; Rodika Rodika; Yuli Dharta
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 1 (2021): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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The welding procedure looks very simple but in practice there are many problems that must be overcome where in repairing it requires various kinds of knowledge, electric arc current and welding defects greatly affect the strength of the weld joint. he conducted a study to determine the effect of electric arc current on low carbon steel St 37 on impact strength. The test method was carried out by the charpy method using five (5) variations of amperemeter 160,180,200,220,240 with plate dimensions: 200mm×100mm×10mm and using a single V seam, with a welding position of 1G (groove). GMAW welding method. specimen dimensions 55mm,×10mm,×10mm,. So it can be concluded that the lower the electric arc current, the higher the impact price, and vice versa, the higher the arc current, the lower the impact value. The results of the highest impact value on an electric arc current of 160 from the Capping weld with a value of 0.92778 (Joule/mm²), and the smallest value is found in the result of the Root Pass weld on an electric arc current of 240 with a value of 0.09875 (Joule/mm²) .

ANALISIS UJI BENDING PADA PENGELASAN BAJA ST37 MENGGUNAKAN LAS SMAW (SHIELD METAL ARC WELDING) DENGAN POSISI PENGELASAN 1G Rahmat Maulid; Tuparjono Tuparjono; yuli Dharta
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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The welding process is the process of joining two or more metal materials in one unit in the presence of heat energy, the heat energy generated from the welding process can affect the results of the weld. In this study, the parameters used are variations in welding current and the number of layers and passes, the welding current used is 65A penetration, 95A fill-capping, 65A penetration, 115A fill-capping, 65A penetration, 125A fill-capping and the number of layers and passes required. used are 4 layer 7 pass and 4 layer 9 pass with DCEP (Direct Current Electrode Positive) polarity. In this study, a bending test analysis was carried out on ST37 steel welding using SMAW (Shield Metal Arc Welding) welding with a welding position of 1G. The purpose of this study was to determine the compressive strength of ST37 steel after the SMAW welding process with bending testing. The method used in the bending test uses the three point bending method. From the results of the bending test, the highest compressive load strength occurred at a welding current of 65A penetration, 125A fill-capping with 4 layers 7 passes, with a suppression load of 75.8kg.

PENGARUH FRAKSI VOLUME DAN VARIASI PERENDAMAN NaOH TERHADAP KEKUATAN TARIK DAN IMPAK KOMPOSIT BERPENGUAT SERAT AMPAS TEBU Aden Sanjaya; Juanda Juanda; yuli Dharta
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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This study aims to determine the effect of the duration of immersion of NaOH and the optimal volume fraction of bagasse fiber on tensile strength and impact strength by using Polyester Resin using hand lay-up composite molding method. The object of research is bagasse fiber composites with variations in NaOH immersion and volume fraction. The highest tensile strength in the composite fiber immersion variation for 2 hours with a volume fraction of 15% is 22.3 MPa. Meanwhile, for tilapia the highest impact strength was in the 2-hour fiber immersion variation with 5% bagasse fiber volume fraction of 0.272 J/mm². Meanwhile, the lowest tensile strength is found in the 5% volume fraction, which is 12.8 MPa. And for the lowest strength impact test value in the 15% fraction, which is 0.0113 J/mm².

PENGARUH VARIASI ARAH SERAT DAN FRAKSI VOLUME SERAT PANDAN DURI TERHADAP KEKUATAN TARIK DAN IMPAK SEBAGAI MATERIAL ALTERNATIF HELM SNI Aditya Rachman; Juanda Juanda; yuli Dharta
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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Pandan thorn with the term (Pandanus tectorius) is a bush plant with climbing stems and has a height of 11 m. This research was conducted to obtain data on the tensile strength and impact strength of pandan thorn fiber with variations in fiber direction and volume fraction. This research is expected to be useful for SNI helmet materials. The maximum value of tensile strength is 41.33 MPa in the vertical fiber direction and the fiber volume fraction is 12.5%. While the lowest tensile strength value is 8.44 MPa using horizontal fiber direction with a fiber volume fraction of 7.5%. The largest impact strength is 0.0616 J/mm2 in the vertical direction of fiber with a fiber volume fraction of 12.5% and the smallest impact strength is 0.0216 J/mm2 in the horizontal fiber direction with a fiber volume fraction of 7.5%. In this test, compared with the results of the tensile and impact strength testing of SNI helmets of 33.93 MPa and 0.00972 J/mm2, the specimens passed the material test for SNI helmets.

Pengaruh Fraksi Volume Pada Komposit Serat Lapisan Batang Pisang Kepok Dengan Perlakuan Asap Cair Terhadap Kekuatan Tarik Sultan Chandra Kusuma; Yuliyanto Yuliyanto; Yuli Dharta
Jurnal Inovasi Teknologi Terapan Vol. 1 No. 2 (2023): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Synthetic fiber composite materials such as glass fiber, aramid and carbon fiber have good mechanical properties, but cause environmental pollution because they cannot be recycled. Because of this, many researchers are making composites with natural fibers. The advantages of natural fibers include: lower price, easy processing, reduced CO2 emissions, and specific strength meets application requirements. Composites are materials composed of a mixture of more than two different main elements. Composites have the advantages of light weight, higher strength, and corrosion resistance. This study applies the full factorial design method, which will look at the effect of the composite ratio (volume fraction and between fiber layers) on tensile strength. The purpose of this research is to determine the effect of variations in volume fraction and fiber layers of kepok banana stems on tensile strength. So that it can be used as an alternative material for making SNI helmets. This study used variations in volume fractions of 10%, 15%, and 20% and variations in fiber layers of 3, 4, and 5 kepok banana stems. Liquid smoke soaking time was 60 minutes. The average value of the maximum tensile test in the 4th layer, 10% volume fraction of fiber with a value of 42.76 Mpa and the minimum average value in the 3rd layer using 10% volume fraction of fiber with a value of 30.06 Mpa.

Co-Authors Aden Sanjaya Adhe Anggry Aditya Rachman Andri Wiguna Ariyanto Ariyanto Armada Armada Bilal Nur Ikhsan Husman Husman Indra Dwi Saputra Juanda Juanda Masdani Masdani Rahmat Maulid Ririn Martasari Rodika, Rodika Sateria, Angga Sultan Chandra Kusuma Tuparjono, Tuparjono Yuliyanto Yuliyanto

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