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Analisis Pegujian Tarik Pada Penyambungan Aluminium-Tembaga Dengan Proses Friction Stir Welding jupri jupri; Muhammad Ikhsan; Siswandi B Siswandi B; Zulkarnain Zulkarnain
INOVTEK POLBENG Vol 12, No 1 (2022): INOVTEK VOL.12 NO.1 2022
Publisher : POLITEKNIK NEGERI BENGKALIS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35314/ip.v12i1.2476

Abstract

Abstrak Pengaruh bentuk sisi sambungan las antara aluminium A 5083 dan tembaga C 11000 yang diproses dengan friction stir welding terhadap sifat mekanik dan struktur mikro telah dievaluasi. Jenis sisi sambungan yang digunakan adalah linier-shaped, tooth-shaped dan saw-shaped. Tool yang digunakan berbentuk trapesium yang memiliki pin berulir dengan jarak pitch 0,5 mm. Parameter proses dibuat konstan yaitu putaran spindle 1500 rpm, traverse speed 24 mm/min, kemiringan tool 2°. Hasil pengujian menunjukkan nilai kekuatan tarik sambungan las dengan bentuk sisi linier-shaped adalah 151 MPa, tooth-shaped 113 MPa dan saw-shaped 167 MPa. Kata Kunci: Las, struktur mikro, rpm, kekuatan, sambungan. Abstract The effect of welding joint side between aluminum A 5083 and copper C 11000 processed by friction stir welding on mechanical properties and microstructure were observed. Linear shaped, tooth shaped, and saw shaped were used as welding joint side. The trapesium tool with pin screw was used in distance pitch of 0.5 mm. The parameter process was set constant for 1500 rpm, transverse speed 24 mm/min, and tilt angle 2˚. The results show that the tensile strength of linear shaped welded joints with 151 MPa, tooth shaped 113 MPa, and saw shaped 167 MPa. Keyword: Welding, microstructure, rpm, strength, joint.
Studi Karakteristik Sistem Instalasi Pipa Udara Bertekanandan Instalasi Pipa Gas O2 di Bengkel Pipa dan Plat Politeknik Negeri Bengkalis Siswandi B; Jupri; Muhammad Sidik Purwoko
ABEC Indonesia Vol. 10 (2022): 10th Applied Business and Engineering Conference
Publisher : Politeknik Caltex Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Piping installation is a unified series of pipes or systems to drain fluid to the desired place by using pipes according to specifications. The piping system is usually equipped with components such as valves, flanges, elbows, branches, nozzles, reducers, supports, insulation and others. The Department of Marine Engineering is one of the majors at the Bengkalis State Polytechnic with facilities and infrastructure, one of which is Pipe and Plate Workshop. The production activities and the teaching and learning process cannot be separated from the plate cutting and painting processes that require compressed air and O2. For the effectiveness of the activities in the Pipe and Plate Workshop, a system for installing compressed air and O2 is carried out. Then the pipe installation system is tested based on the needs of the work carried out at the Pipe and Plate Workshop. Based on the test results on the air pipe installation system, the pressure drop at the outlet valve to the inlet pressure is obtained, namely outlet 1 of 0.1 bar, outlet 2 of 0.3 bar and outlet 3 of 0.4 bar. For the O2 pipe installation system, it is found that the output pressure drop (outlet) to the inlet pressure is large, namely outlet 1 of 0.38 kg/cm2 and outlet 2 of 0.51 kg/cm2.
PENGARUH SUDUT PAHAT PADA PENGGURDIAN KOMPOSIT SERAT DAUN NANAS / TERMOPLASTIK PADA PEMBENTUKAN DELAMINASI Zulkarnain Zulkarnain; Ismet Hari Mulyadi; Jupri Jupri; Siswandi B
Jurnal Inovtek Polbeng Vol 13, No 1 (2023): Inovtek VOL. 13 NO 1 2023
Publisher : POLITEKNIK NEGERI BENGKALIS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35314/ip.v13i1.3325

Abstract

This study aims to determine the effect of the Gurdi tool angle on delamination in composite laminates in the formation of delaminations. The spacing of the selected reinforcing fibers was 2.4 and 6 mm in a composite laminate of ethylene vinyl acetate (EVA) polymer matrix with reinforcing fibers from pineapple leaves. The method used in composite fabrication is hand lay-up, namely by direct casting on three layers of fiber that has been woven and tied to the sides of the mold. For cutting speed, Vf 72 mm / min, using a chisel with a diameter of 8 mm with a tool angle of 70o and 118o. Delamination was determined using the Feda method. The delamination sections were observed using a digital microscope and then processed using AutoCAD to measure Dmax and Ad. The delamination ratio in the top hole for the tool diameter of 8mm with a 70° angle at the variation of the distance of 2 mm, 4 mm and 6 mm were 1.268, 1.224 and 1.192 for the bottom hole were 1.078, 1.042 and 1.029, respectively. Meanwhile, the ratio of delamination in the upper hole for a tool diameter of 8mm with an angle of 118° at a distance variation of 2mm, 4mm and 6mm were 1.194, 1.194, 1.158 for the bottom hole, respectively, 1.046, 1.042 and 1.038.
PENGARUH SUDUT PAHAT PADA PENGGURDIAN KOMPOSIT SERAT DAUN NANAS / TERMOPLASTIK PADA PEMBENTUKAN DELAMINASI Zulkarnain Zulkarnain; Ismet Hari Mulyadi; Jupri Jupri; Siswandi B
INOVTEK POLBENG Vol 13, No 1 (2023): Inovtek VOL. 13 NO 1 2023
Publisher : POLITEKNIK NEGERI BENGKALIS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35314/ip.v13i1.3325

Abstract

This study aims to determine the effect of the Gurdi tool angle on delamination in composite laminates in the formation of delaminations. The spacing of the selected reinforcing fibers was 2.4 and 6 mm in a composite laminate of ethylene vinyl acetate (EVA) polymer matrix with reinforcing fibers from pineapple leaves. The method used in composite fabrication is hand lay-up, namely by direct casting on three layers of fiber that has been woven and tied to the sides of the mold. For cutting speed, Vf 72 mm / min, using a chisel with a diameter of 8 mm with a tool angle of 70o and 118o. Delamination was determined using the Feda method. The delamination sections were observed using a digital microscope and then processed using AutoCAD to measure Dmax and Ad. The delamination ratio in the top hole for the tool diameter of 8mm with a 70° angle at the variation of the distance of 2 mm, 4 mm and 6 mm were 1.268, 1.224 and 1.192 for the bottom hole were 1.078, 1.042 and 1.029, respectively. Meanwhile, the ratio of delamination in the upper hole for a tool diameter of 8mm with an angle of 118° at a distance variation of 2mm, 4mm and 6mm were 1.194, 1.194, 1.158 for the bottom hole, respectively, 1.046, 1.042 and 1.038.
Co-Authors Ismet Hari Mulyadi Muhammad Ikhsan Muhammad Sidik Purwoko Siswandi B Siswandi B Siswandi B Zulkarnain Zulkarnain