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Pembuatan mesin uji tarik kapasitas kecil: bagian data akuisisi Pandiatmi, Pandri; Okariawan, IDK; Sulistyowati, Emmy Dyah; Salman, S.; Adhi, IG.A.K. Chatur
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 7, No 1 (2017): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (549.502 KB) | DOI: 10.29303/dtm.v7i1.6

Abstract

For the purposes of practicum and student research in the field of materials, tensile test equipment is very important. But the test equipment that is in the Department of Mechanical Engineering, University of Mataram has a very large capacity so it is not suitable for testing materials such as plastics and composites so this study bertujuann to make small capacity tensile testing machine for purposes of practicum and student research in the field of polymer materials and composites. Due to limited funds, the research is focused on making data acquisition tensile testing machine. Necessary materials are on site, cable, lead solder, lacquers cable socket and supported by laboratory equipment mechanical engineering majors who have been there, but some of the components to be purchased as load cell, electronic extensometer, and the operational amplifier module arduino uno boad. Design data acquisition consists of a sensor that is load cell, extensometer electronic, signal conditioning is an operational amplifier that is arduino uno data recording boad connected with the personal computer and data processing using LabView software so that the output of the data acquisition is in the form of tables and graphs. With their small capacity tensile testing machine is expected to provide an additional means of learning in the laboratory and student research.
PENINGKATAN EFISIENSI DAN EFEKTIVITAS OPERASIONAL NELAYAN PADA PANTAI YANG CURAM DENGAN ALAT PEMINDAH PERAHU Tanaya, IGNA; Suartika, Made; Okariawan, IDK
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 3, No 1 (2013): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (381.757 KB)

Abstract

Indonesia is known as an archipelago that has abundant marine resources, this should make Indonesia a wealthy and prosperous country. Unfortunately, these resources cannot be fully utilized because there is still a lack of support for technology and human resources in an effort to explore the existing marine resources. It is no wonder then many coastal communities are middle to lower living standards. Most of the fishermen have to pay people to help the process of shifting their boat, especially the fishermen on the steep coast so that it can reduce their revenue.This research aims to improve the operational productivity of fishermen on the steep coast by using an alternative concept, so that it reduces human labor as shifting assistant in the traditional shifting. Three alternative concepts has been designed to assist those shifting process, ie Tripod, Boat Train, and Boat Wheel. The designs was then selected to obtain the best concept. Concept selection was using the matrix assessment Analitycal Hierarchy Process (AHP) by assistance of data processing using Expert Choise 11 program furthermore method followed by using Pugh method to compare the boat shifting process between alternative concept and traditional shifting.Concept selection gives certain point for each concept, Tripod 0.3044 point, Boat Train 0.3998 point, and Boat Wheel 0.4385 point. It shows that boat wheel design selected as the best alternative concept. The comparison of total productivity between the best alternative concept and traditional shifting is 2.32 to 1.66. It means boat shifting process by using alternative concept design can be increase productivity counting 28%.
ANALISIS VARIASI JUMLAH SUDU BERENGSEL TERHADAP UNJUK KERJA TURBIN CROSS FLOW ZERO HEAD Padang, Yesung Allo; Okariawan, IDK; Wati, Mundara
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 4, No 1 (2014): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (259.49 KB)

Abstract

Micro Hydro Powewr Plant (MHPP) is a power plant that converts water energy into electrical in a small capacity. Developing MHPP means developing renewable energy which is environmentally save. In this researh the position of cross flow turbine is submerged in water so it is said cross flow zero head turbine. The purpose of this reserch is to analyze the performances of cross flow zero head turbne. The variation parameters include number of blade (12, 6 and 4 blades), fixed blades and sliding blades (unbolted blades). The turbine performances to be analyzed are system efficiency, turbine output power and generator speed. The results show that the best turbine performance is obtained when number of blades is 12 with fixed blade. This yields to the best system efficiency of 0.47% obtained at generator speed of 89.9 rpm and generator power output of 29.25 Watts.