Articles
<![CDATA[Damage Tolerance Analysis of Weld Joint ]]>
<![CDATA[Aqli Mursadin]]>;
<![CDATA[Mastiadi Tamjidillah]]>
<![CDATA[ INFO-TEKNIK Vol 2, No 1 (2001): INFOTEKNIK VOL. 2 NO. 1 2001 ]]>
Publisher : <![CDATA[Universitas Lambung Mangkurat ]]>
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DOI: 10.20527/infotek.v2i1.446
<![CDATA[This research explores the development and the implementation of damage tolerance analysis on weld joints. Two geometry types of weld joint are investigated subject to cyclic loadings. The experimental results are used for establishing residual strength diagram and crack growth diagram for both of types. The results show that the strength behavior may be quite different for different geometry types, even if the materials are the same.]]>
<![CDATA[Analisis Alternatif Produk Baling-Baling Dengan Pendekatan Rekayasa Nilai ]]>
<![CDATA[Mastiadi Tamjidillah]]>;
<![CDATA[aqli mursadin]]>
<![CDATA[ INFO-TEKNIK Vol 3, No 1 (2002): INFOTEKNIK VOL. 3 NO. 1 2002 ]]>
Publisher : <![CDATA[Universitas Lambung Mangkurat ]]>
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DOI: 10.20527/infotek.v3i1.452
<![CDATA[Pengembangan produk menjadi hal yang penting untuk dikaryakan, dengan melakukan pengembangan produk akan selalu memiliki kemampuan bersaing dan mampu mengantisipasi perkembangan kebutuhan konsumen, dalam arti kata produk tersebut memiliki fungsi-fungsi yang berkembang pada konsumen. Produk baling-baling pada mulanya hanya dilihat sebagai fungsi penggerak saja, tetapi perkembangan konsumen menimbulkan kebutuhan lain, sehingga dikembangkan fungsi-fungsi lainnya. Pengembangan fungsi tersebut akan menimbulkan alternatif-alternatif produk, selanjutnya dengan penerapan Rekayasa Nilai (Value engineering) akan didapat alternatif yang mampu memenuhi fungsi-fungsi tersebut dan menghasilkan suatu nilai (score) yang dapat digunakan sebagai patokan untuk menenntukan alternatif.Rekayasa Nilai merupakan pendekatakan yang sistematis dan terorganisir. Studi ini dapat mengidentifikasikan biaya-biaya yang tidak diperlukan dalam suatu desain, mencoba menampilkan ide-ide baru yang berkaitan dengan produk yang sedang dikembangkan dan meningkat performansi produk tersebut dengan cara mencari material baru ataupun teknologi yang dapat digunakan.Hasil analisa ini merupakan suatu usulan pemilihan cetakan baling-baling kapal secara umum. Dengan melakukan implementasi studi ini, perlu dijabarkan lebih lanjut oleh para ahli (multi disipliner) dibidangnya. Hasil akhir perhitungan setelah dibandingkan dengan biayanya didapatkan 8 alternatif memiliki nilai (Value) yaitu sebesar 1.9665. nilai (Value) tersebut menunjukkan bahwa performasi yang dimiliki oleh alternatif desain tersebut. Dengan memiliki kemampuan daya saing yang lebih dari alternatif desain yang lain. Alternatif 8 adalah baling-baling dengan seri desain the N.P.L Standard B Screw Series dengan Spesifikasi desain antara lain Jumlah Daun (B) = 4 buah ; Diameter Baling-baling (D) = 8,4 Inch ; Ratio Poros Baling-Baling (dB) = 0,167. Ratio Gerak (Pm) = 0,8 Ratio Ketebalan (t) = 0,045 ; Ratio Area Dauan (aE) = 0,5 Sudut Sapuan (yR) = 12,0o bahan Baku Alumunium.]]>
<![CDATA[Perencanaan Produksi Agregat Dengan Metode Goal Programing ]]>
<![CDATA[Mastiadi Tamjidillah]]>
<![CDATA[ INFO-TEKNIK Vol 4, No 1 (2003): INFOTEKNIK VOL. 4 NO. 1 2003 ]]>
Publisher : <![CDATA[Universitas Lambung Mangkurat ]]>
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DOI: 10.20527/infotek.v4i1.472
<![CDATA[A Production planning is very important to all activities in manufacturing company. For a company producing a variety of product the production planning will be complicated. In this case it’s necessary to make an aggregate production planning. A Company has goals to achieve the products, althought there differenciate between each other. Other wise, if needs to make a production planning that accommodate such goals.Goal programming model can be used for aggregate production planning. This multi objective model can accommodate more than one goal which will be achieved by the company. Product demand forecasting is input for aggregate production planning. From this aggregate production planning, futhermore, disaggregation must be conducted, then it will be continued by raw material planning. The raw material planning is made by lot size each order economically. The aim of goal programming model is to maximize profits, to minimize subcontract products amount, to minimize overtime labours cost and to minimize inventory amount. The results show that the goal programming model could accommodate three goals that will be achieved by the company, except that goal to maximize profit high goal is to minimize inventory amount. The comparison between planning and realitation show that the goal programming model could reduce the minimize overtime labours cost.]]>
<![CDATA[PENGARUH TIPE KACA PENUTUP 1 SISI DAN 2 SISI DENGAN ABSORBER TEMBAGA PADA SOLAR DISTILLATION TERHADAP PRODUKTIVITAS KONDENSAT AIR LAUT ]]>
<![CDATA[Agung Wibowo]]>;
<![CDATA[Mastiadi Tamjidillah]]>
<![CDATA[ JTAM ROTARY Vol 3, No 1 (2021): JTAM ROTARY ]]>
Publisher : <![CDATA[Universitas Lambung Mangkurat ]]>
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DOI: 10.20527/jtam_rotary.v3i1.3463
<![CDATA[Distilasi matahari merupakan suatu alat yang memanfaatkan energi radiasi matahari sebagai sumber panasnya. Penelitian ini membandingkan destilasi surya tipe penutup kaca 1 sisi dan 2 sisi dengan penyerap tembaga. Tujuan dari penelitian ini adalah untuk mengetahui perpindahan kalor yang terjadi, produktivitas air yang dihasilkan dan kualitas air yang dihasilkan. Penelitian dilakukan selama 4 hari. Hasil penelitian menunjukkan bahwa distilasi surya dengan penutup kaca 1 sisi lebih baik dibandingkan dengan penutup kaca 2 sisi. Ini terlihat dari produktivitas air yang dihasilkan. Distilasi surya dengan penutup kaca 1 sisi memiliki produktivitas air 468 ml, sedangkan destilasi surya dengan penutup kaca 2 sisi hanya 450 ml. Perpindahan panas konduksi tertinggi terjadi pada distilasi surya dengan penutup kaca 1 sisi sebesar 4064,6 Watt. Untuk konveksi perpindahan panas tertinggi terjadi pada destilasi surya dengan penutup kaca 1 sisi yaitu 0,16 Watt. Perpindahan panas radiasi tertinggi terjadi pada destilasi surya dengan penutup kaca 1 sisi sebesar 34,7 Watt. Hasil penelitian kualitas air yang dihasilkan oleh kedua distilasi surya tersebut adalah air tersebut dapat dikategorikan sebagai air bersih. Solar distillation is a device that utilizes solar radiation energy as a source of heat. This research compares solar distillation with 1 sided and 2 sided glass cover type with copper absorber. The purpose of this research is to determine the heat transfer that occurs, the productivity of the water produced and the quality of water produced. Research is doing for 4 days. The results of this research that solar distillation with 1 sided glass cover is better to 2 sided glass cover. This is seen from the productivity of the water produced. Solar distillation with 1 sided glass cover has a water productivity of 468 ml, while solar distillation with 2 sided glass cover is only 450 ml. The highest conduction heat transfer is in solar distillation with 1 sided glass cover is 4064.6 Watts. For the highest convection heat transfer is in solar distillation with 1 sided glass cover is 0.16 Watt. The highest radiation heat transfer is in solar distillation with 1 sided glass cover is 34.7 Watts. The results of research the quality of water produced by both solar distillation is that the water can be categorized as clean water.]]>
<![CDATA[PENGARUH TIPE ABSORBER TEMBAGA DAN SENG PADA SOLAR DISTILLATION TERHADAP PRODUKTIVITAS KONDENSAT AIR LAUT ]]>
<![CDATA[Muhammad Rizqi Maulana]]>;
<![CDATA[Mastiadi Mastiadi Tamjidillah]]>;
<![CDATA[Muhammad Nizar Ramadhan]]>
<![CDATA[ JTAM ROTARY Vol 4, No 1 (2022): JTAM ROTARY ]]>
Publisher : <![CDATA[Universitas Lambung Mangkurat ]]>
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DOI: 10.20527/jtam_rotary.v4i1.5545
<![CDATA[Destilasi surya adalah alat yang memanfaatkan energi radiasi matahari sebagai sumber panas. Penelitian ini membandingkan distilasi surya dengan penyerap tembaga dan seng. Tujuan dari penelitian ini adalah untuk mengetahui perpindahan panas yang terjadi, produktivitas air yang dihasilkan dan kualitas air yang dihasilkan. Penelitian dilakukan selama 4 hari. Hasil penelitian ini bahwa destilasi surya dengan penyerap tembaga lebih baik daripada penyerap seng. Hal ini terlihat dari produktivitas air yang dihasilkan. Destilasi surya dengan penyerap tembaga memiliki produktivitas air sebesar 468 ml, sedangkan destilasi surya dengan penyerap seng hanya 315 ml. Perpindahan panas konduksi tertinggi terjadi pada destilasi surya dengan penyerap tembaga yaitu 4064,6 Watt. Untuk perpindahan panas konveksi tertinggi dilakukan destilasi surya dengan penyerap seng, yaitu konveksi dari permukaan kaca ke lingkungan sebesar 0,25 Watt. Perpindahan panas radiasi tertinggi terjadi pada destilasi surya dengan penyerap seng, yaitu radiasi dari kaca ke lingkungan sebesar 33,6 Watt. Hasil penelitian kualitas air yang dihasilkan oleh kedua penyulingan tenaga surya tersebut adalah air tersebut dapat dikategorikan sebagai air bersih. Solar distillation is a device that utilizes solar radiation energy as a source of heat. This research compares solar distillation with copper and zinc absorber. The purpose of this research is to determine the heat transfer that occurs, the productivity of the water produced and the quality of water produced. Research is doing for 4 days. The results of this research that solar distillation with copper absorber is better to zinc absorber. This is seen from the productivity of the water produced. Solar distillation with copper absorber has a water productivity of 468 ml, while solar distillation with zinc absorber is only 315 ml. The highest conduction heat transfer is in solar distillation with copper absorber is 4064.6 Watts. For the highest convection heat transfer, there is solar distillation with zinc absorber, which is convection from the surface of the glass surface to the ambient is 0.25 Watt. The highest radiation heat transfer is in solar distillation with zinc absorber, which is radiation from the glass to the ambient is 33.6 Watts. The results of research the quality of water produced by both solar distillation is that the water can be categorized as clean water.]]>
<![CDATA[PENGARUH KEMIRINGAN SUDUT KACA PENUTUP PADA SOLAR DISTILATION DENGAN ABSORBER SENG (Zn) TERHADAP PRODUKTIVITAS KONDENSAT AIR LAUT ]]>
<![CDATA[Nurmisriandi Nurmisriandi]]>;
<![CDATA[Mastiadi Tamjidillah]]>;
<![CDATA[Muhammad Nizar Ramadhan]]>
<![CDATA[ JTAM ROTARY Vol 4, No 1 (2022): JTAM ROTARY ]]>
Publisher : <![CDATA[Universitas Lambung Mangkurat ]]>
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DOI: 10.20527/jtam_rotary.v4i1.5548
<![CDATA[Destilasi surya merupakan alat sederhana yang memanfaatkan energi radiasi matahari sebagai sumber panas. Penelitian ini membandingkan destilasi surya dengan sudut kemiringan kaca penutup 30°, 40°, dan 50°. Tujuan dari penelitian ini adalah untuk mengetahui perpindahan panas yang terjadi, produktivitas air yang dihasilkan dan kualitas air yang dihasilkan. Penelitian dilakukan selama 4 hari. Hasil penelitian ini mengungkapkan bahwa sudut 30° menghasilkan lebih banyak air kondensat. Produktivitas air paling banyak terjadi pada sudut 30 dengan jumlah air 438 ml, sedangkan produktivitas terendah terjadi pada sudut 50 dengan jumlah air 136 ml. Perpindahan panas konduksi tertinggi terjadi pada destilasi surya dengan penyerap seng yaitu 1243,52 Watt. Untuk perpindahan panas konveksi tertinggi sebesar 0,15 Watt. Perpindahan panas radiasi tertinggi adalah 33,93 Watt. Hasil penelitian terhadap kualitas air yang dihasilkan oleh ketiga solar refiner tersebut air tersebut dapat dikategorikan sebagai air bersih. Solar distillation is a simple tool that utilizes solar radiation energy as a source of heat. This study compares solar distillation with the slope angle of the glass cover 30°, 40°, and 50°. The purpose of this study is to determine the heat transfer that occurs, the productivity of the water produced and the quality of water produced. The study was conducted for 4 days. The results of this study reveal that the angle of 30° produces more condensate water. The most water productivity occurs at an angle of 30 with the amount of water 438 ml, while the lowest productivity occurs at an angle of 50° with the amount of water 136 ml. The highest conduction heat transfer is in solar distillation with zinc absorber is 1243.52 Watts. For the highest convection heat transfer of 0.15 Watt. The highest radiation heat transfer was 33.93 Watts. The results of the research on the quality of water produced by the three solar refiners are that the water can be categorized as clean water.]]>
<![CDATA[PENENTUAN OPTIMASI PARAMETER PERMESINAN TERHADAP KEKASARAN BAJA ST 42 HASIL PROSES BUBUT MENGGUNAKAN METODE TAGUCHI ]]>
<![CDATA[Alfiansyah Riady]]>;
<![CDATA[Mastiadi Tamjidillah]]>
<![CDATA[ Scientific Journal of Mechanical Engineering Kinematika Vol 2 No 2 (2017): SJME Kinematika Juni 2017 ]]>
Publisher : <![CDATA[Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat ]]>
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DOI: 10.20527/sjmekinematika.v2i2.40
<![CDATA[This study aims to increase the Productivity of Rolling Using Taguchi Method. In the old industrial company the work of a product greatly affects the work cost and the level of machinary productivity, so it needs a method in order to optimize the level of productivity. The Taguchi method can be used to optimize to get the best machining productivity level. This research uses ST 42 steel material with conventional lathe machining process. It is known in this study to obtain the best roughness or optimum parameters used in the spindle rotation is 490 rpm, feeding motion 0.11 mm/rev, 0.2 mm feeding depth. the most influential factor in this research is spindle rotation 41.6%, feeding 46.3% while the eating depth is less influential that is equal to 5.4%.]]>
<![CDATA[PENGARUH JARAK ANTAR ELEKTRODA PLAT BESI TERHADAP PRODUKTIVITAS DAN EFISIENSI GENERATOR HHO MENGGUNAKAN METODE ELEKTROLISIS AIR LAUT DENGAN KATALIS KOH ]]>
<![CDATA[Akhmad Daudi Shabahaini]]>;
<![CDATA[Mastiadi Tamjidillah]]>
<![CDATA[ Scientific Journal of Mechanical Engineering Kinematika Vol 4 No 1 (2019): SJME Kinematika Juni 2019 ]]>
Publisher : <![CDATA[Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat ]]>
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DOI: 10.20527/sjmekinematika.v4i1.56
<![CDATA[HHO gas is an alternative energy that can replace fossil energy sources. HHO gas itself can be produced in several ways, one of which uses water electrolysis. Water is given a direct electric charge so that the water molecule (H2O) splits into HHO gas. This study aims to determine the effect of iron plate electrode distance on the productivity and efficiency of HHO generator by varying it from 2 mm, 4 mm and 6 mm, for the water used is the sea water of Teluk Tamiang Village which was dissolved together with KOH of 3,04%. From the experiments carried out the data obtained in the form of voltage, current, time to produce 50 ml of HHO gas, pH of sea water, pH of the solution before and after electrolysis, and temperature after electrolysis. The data is then processed so that it gets the highest productivity at a distance of 2 mm with an average flow rate of 0,89 ml/s and the highest efficiency at a distance of 2 mm with an average of 23,83%. This is because at a distance of 2 mm the electrons move from the cathode electrode to the anode electrode faster and the resulting resistance is smaller, so that the HHO generator produces faster oxyhydrogen bubbles and less power and energy consumption.]]>
<![CDATA[ANALYSIS OF PROTECTIVE GAS FLOW AND SEAM FORMATION ON GMAW WELD PROCESS TO HARDNESS AND MICRO STRUCTURE OF ASTM A36 STEEL ]]>
<![CDATA[Fius Lambang]]>;
<![CDATA[Mastiadi Tamjidillah]]>
<![CDATA[ Scientific Journal of Mechanical Engineering Kinematika Vol 5 No 1 (2020): SJME Kinematika Juni 2020 ]]>
Publisher : <![CDATA[Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat ]]>
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DOI: 10.20527/sjmekinematika.v5i1.137
<![CDATA[This study aims to determine the effect of variations in the protective gas flow and seam formation on the hardness and microstructure of ASTM A36 steel. The variation of the protective gas flow used is 5 liters/minute, 10 liters/minute, and 15 liters/minute, while the form of seam used is seam I, ½ V, and V with ER 70S-6 electrodes with a diameter of 1.2 mm. The results showed that the greater protective gas flow would increase the value of violence. The highest increase in weld metal and HAZ hardness was in seam V with 15 liters/minute gas flow as much as 38.06% weld metal, 11.15% HAZ, while the lowest hardness value of weld metal was in gas flow 5 liters/minute at seam ½ V is 41.9 HRB and the lowest HAZ hardness value is in the gas flow of 5 liters/minute in Kampung I which is 40.8 HRB. The highest increase in hardness of base metal was in ½ V with 39.46% with 15 liters/minute gas flow, while the lowest base metal hardness was in Kampung I, 43.4 HRB with 5 liters/minute gas flow. The structural test results show the higher the protective gas flow will increase the formation of more pearlite. The highest percentage of pearlite formation is in the weld metal of seam V, which is 53.16% and the percentage of pearlite at least in the HAZ area of seam I is 38.17%.]]>
<![CDATA[ANALYSIS OF VARIATION OF WIRE FEEDER SPEED ON GMAW WELD PROCESS AGAINST MICRO AND STRUCTURE VIOLENCE ASTM STEEL A36 ]]>
<![CDATA[Aditya Nur Ramadhan M.Ngari.SR.]]>;
<![CDATA[Mastiadi Tamjidillah]]>
<![CDATA[ Scientific Journal of Mechanical Engineering Kinematika Vol 5 No 2 (2020): SJME Kinematika Desember 2020 ]]>
Publisher : <![CDATA[Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat ]]>
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DOI: 10.20527/sjmekinematika.v5i2.144
<![CDATA[This study aims to determine the effect of variations in wire feeder speed on the GMAW welding process on the hardness and microstructure of ASTM A36 steel. Wire feeder variations used are 3.5 meters / minute, 3.55 meters / minute and 3.6 meters / minute, ER 70S-6 electrodes with a diameter of 1.2 mm. The results showed that the highest hardness value in weld metal was found in specimen 1 wire feeder speed of 3.5 meters / minute with hardness value of 59.5 HRB. The highest hardness value in the HAZ area is in specimen 3 with a wire feeder speed of 3.6 meters / minute with a hardness value of 57.5 HRB. While the highest base metal hardness value is in the specimen 3 wire feeder speed of 3.55 meters / minute with a hardness value of 64.4 HRB. Microstructure observation results show that the higher the hardness value will increase the pearlite phase more and vice versa the lower the hardness value the ferrite phase is more than the pearlite phase.]]>
