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Romels Cresano Apelles Lumintang
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PERENCANAAN PROSES CAD PRODUK BERKEPALA BAUT UNTUK APLIKASI CAM DENGAN MENERAPKAN METODE TO CORNER Henri Viki Barapa; Rudy Poeng; Romels Cresano Apelles Lumintang
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 1 No. 1 (2012): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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Abstract

Computer is not just, a replacement for a typewriter, but also in the scope of graphic design, process data, animated recording is including in the art Computer Aided Design (CAD). Results of product design using CAD can be applied in Computer Aided Manufacturing (CAM) to simulate the machining process to work optimally, in using a computer to do programming, directing and controlling the production equipment based on the design of the product. This research is a study on how to simulate the process of CAD in shaping head bolt using AutoCAD software as a planning process. The purpose of this study is to plan  machining processes using shaping machine to get the CAD drawings as information for CAM applications. The results of this planning, the product is used as an object shaped head bolts (size 50x15 mm, and the size of the coordinates information obtained from motion trajectories Freis chisel upright in processing these products can be geomeotik code data for CAM applications by applying To Corner.
ANALISIS LAJU KOROSI PADA BAJA KARBON DENGAN MENGGUNAKAN AIR LAUT DAN H2SO4 Kevin Jones Pattireuw; Fentje Abdul Rauf; Romels Cresano Apelles Lumintang
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 2 No. 1 (2013): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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In this study, the materials used as reference are carbon steel and the copper alloy. Corrosion process is done by soaking the material in the test environment and H2SO4 solution of sea water that has collected in a glass aquarium in order to circulate properly with the aid of a pump. The length of immersion performed for 1 hour 3 times as much as 3 hours of immersion and immersion for 3 times. The purpose this study is to determine the corrosion that occurs in the material of carbon steel and copper alloys. Weight loss due to corrosion is closely related to time, in other words increasing immersion time, the greater the weight loss that occurs. The rate of corrosion test results conducted with a time of 1 hour, the average value obtained for the specimen I in of carbon steel and copper alloys in seawater solution is 0,105 mils / year and 0 mils / year. While in the sulfuric acid solution is 0,162 mils / year and 0,028 mils / year. And the rate of corrosion test results conducted by 3 hours, the average value obtained for the specimen I in of carbon steel and copper alloys in sea water solution and sulfuric acid is 1,350 mils / year and 0,015 mils / year. While in the sulfuric acid solution is 1,400 mils / year and 1,306 mils / year.
PENGARUH VARIASI UKURAN BUTIRAN FILLER SERBUK GERGAJI BATANG KELAPA TERHADAP SIFAT MEKANIK KOMPOSIT Cliffer Fridolin Poyoh; Fentje Abdul Rauf; Romels Cresano Apelles Lumintang
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 2 No. 1 (2013): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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Coconut tree (cocos nucifera) is one plant that is widely grown in North Sulawesi many benefits of the overall crop. Since sawdust coconut trunks are not optimally its utilization as a filler for composite materials is studied. In addition to eco-friendly materials are easily obtainable.This study aims to determine the mechanical properties of the composites tested bending (ASTMD 6110) and impact (ASTMD 256-00) with grain variation using mesh 250, 180, and 90 using polyester resin matrix. Optimum impact Is obtained using 250 Mesh 60% volume fraction of resinFrom the data processing Bending test optimum bending moment obtained at 250 mesh resin volume fraction of 70%, and optimum bending stress obtained on 250 mesh 70% volume fraction. For optimum deflection on 250 mesh fraction 70% volume for optimum bending rigidity is at 250 mesh 60% volume fraction. Then it shows the variation of grain size, the volume fraction affects the value of the mechanical strength of the composite.Keywords: Impact, Bending, Composites, volume fraction, Fille
ANALISIS KETELITIAN GEOMETRIK MESIN FRAIS HORISONTAL KUNZMANN UF6N DI LABORATORIUM MANUFAKTUR TEKNIK MESIN UNSRAT Krisnal Tolosi; Rudy Poeng; Romels Cresano Apelles Lumintang
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 2 No. 1 (2013): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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This study aims to determine the feasibility of operational a of machine tools through the static testing based on the geometric characteristics of the ISO-1710 standard, with a case study on a horizontal milling machine type of UF6N Kunzmann's in Mechanical Engineering Manufacturing Laboratory of University of Sam Ratulangi (UNSRAT). Testing includes the table alignment, the vertical motion knee alignment, the arbor with table alignment and the deviations of spindle rotation.Test results will be compared with the permitted value according to ISO-1710 standards. The results show that the magnitude of the deviation values ​​obtained from the milling machine is not meet the standard to produce a high accuracy product, but the machine is applicable for practicums of manufacturing process. Keywords: Geometric Accuracy, Machine Tools
PROSES PRODUKSI ALAT ANGKAT KENDARAAN NIAGA KAPASITAS 2 TON Rio Manoppo; Rudy Poeng; Romels Cresano Apelles Lumintang
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 2 No. 2 (2013): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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Abstract

The object of this study  is the production  process of the 2 tonnes  capacity lifting equipment commercial vehicle with carried out in manufacture laboratory of  the University of Sam Ratulangi. The aim of this study is to build the component, measuring the lifter parts’ processing time, and analyzing the stages of the process, and calculating the production process of the 2 tonnes capacity lifting equipment produced in manufacture laboratory the University of Sam Ratulangi. The result obtained is a commercial vehicle lifting equipment unit manually operated that can do a car lifting till 2 tonnes maximum empty heavy vehicle. The manufacturing time in every single component is 7,684 seconds with 765 units/year production target. Key Word : production process, lifting equipment, production target.
ANALISIS SIFAT MEKANIK DAN DAYA SERAP AIR MATERIAL KOMPOSIT SERAT ROTAN Franklin Donald Izaak; Fentje Abdul Rauf; Romels Cresano Apelles Lumintang
JURNAL POROS TEKNIK MESIN UNSRAT Vol. 2 No. 2 (2013): Jurnal Poros Teknik Mesin Unsrat
Publisher : Fakultas Teknik Jurusan Teknik Mesin Universitas Sam Ratulangi

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Abstract

The aim of this research is to obtain the optimum tensile strenght of rattan fiber composite for different volume fraction of fiber and resin. without treatment, and find result of  fracture at the specimens. Material used in this research is rattan  fiber which have a straight fiber orientation. Different volume fraction without treatment used in this study. The composites was molded with epoxy used as matrix. Tensile test was performed based on ASTM  D638 standard. Maximum tensile test obtained  is 197.505 N / mm at 30% volume fraction of epoxy and 70% fiber, While the optimum water absorption is 2.71 grams of at 90% volume fraction of epoxy and 10% fiber. Keywords : rattan fiber, epoxy, tensile test, water absorption
Co-Authors Cliffer Fridolin Poyoh Fentje Abdul Rauf Franklin Donald Izaak Henri Viki Barapa Kevin Jones Pattireuw Krisnal Tolosi Rio Manoppo Rudy Poeng