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All Journal Jurnal Ekonomi dan Kewirausahaan Transmisi Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Media Mesin: Majalah Teknik Mesin JURNAL PENGABDIAN KEPADA MASYARAKAT Journal of Mechanical Engineering Science and Technology JAUR (Journal of Architecture and Urbanism Research) Adi Widya : Jurnal Pengabdian Masyarakat DE LEGA LATA: Jurnal Ilmu Hukum ASRO JOURNAL - STTAL Jurnal Karinov Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Pengabdian, Pendidikan dan Teknologi Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Borneo Student Research (BSR) Automotive Experiences Research Fair Unisri Jurnal Pengabdian Kepada Masyarakat Pekodimas : Jurnal Pengabdian Kepada Masyarakat Karunia: Jurnal Hasil Pengabdian Masyarakat Indonesia INTERNATIONAL JOURNAL OF SOCIETY REVIEWS (INJOSER) Jurnal Kearsipan Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS)
Suprayitno Suprayitno
Universitas Negeri Malang
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Journal : Journal of Mechanical Engineering Science and Technology

 1 
The Effect of Multi-Extrusion Process of Polylactic Acid on Tensile Strength and Fracture Morphology of Filament Product Muhamad Syaifuddin; Heru Suryanto; Suprayitno Suprayitno
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 5, No 1 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v5i12021p062

Abstract

Polylactic acid (PLA) is one of the most used materials in FDM 3D Printing. Large-scale consumption of PLA on an industrial scale could cause environmental and efficiency problems. Thus, PLA waste and industry waste need to be recycled to limit excessive waste. This study aimed to investigate the change in mechanical property, morphology, and structure of mechanically recycled PLA. Recycling was performed 12 times using the extrusion process with an extrusion temperature nozzle of 170°C. The SEM, structural analysis, and amorphous-crystalline analysis used XRD. The results showed a gradual decrease of tensile strength from each recycle with a total of 20% (13.22 MPa). The decrease percentage equalled the number of recycling. After the 9th recycle, PLA experienced a drastic tensile strength decrease, in which the 12th recycle tensile strength had a 14% (8.17 MPa) reduction. The morphology analysis of the tensile test sample presented significant morphology change, in which morphology defects such as void, flakes, and cracks appeared after the 6th recycle. Although, until 12 times extrusion, it did not significantly affect the PLA phase shape. Mechanical recycle using a multi-extrusion process is not recommended exceeding six times
Camshaft Failure Simulation with Static Structural Approach Riduwan Prasetya; Andoko Andoko; Suprayitno Suprayitno
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 5, No 1 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v5i12021p047

Abstract

A failure happens within the camshaft of the minibus when the vehicle is in utilize. The camshaft was a fracture within the bearing between the primary cylinder exhaust valve and the second cylinder suction. This simulation aims to find the causes of camshaft failure utilizing the finite element method with a static structural approach, including simulations of deformation, strain, stress, fatigue life (stress-life and strain-life), and cracks. The method used in this paper is the finite element method with a static structural approach by ANSYS software. The camshaft material is a gray cast iron designed using Solidworks. Pre-processing includes meshing with a size of 3 mm. The value of loading force (1348.28 N) and torque (113400 Nmm) are fixed, and the boundary conditions are varied. Processing includes the process of computation and post-processing into a part that displays the results. The simulation results show that for all the deformation and strain values that are in the elasticity area of the material, the maximum and minimum stress which is below the strength of the material, the location of the maximum values of deformation, strain, and stress is not at the fault location. The simulation of fatigue life both in stress-life and strain-life results in infinite cycles, which is above 106 cycles, while the simulation of cracks results in a decrease in the cycle. Based on the simulation results with the above parameters to the camshaft, it was found that a failure was caused by a defect characterized by reduced fatigue life at the same loading conditions.
Co-Authors . Pramono Achmad Rhodianto Achmad Taufiq Agit Bagus Dermawan Ahmad Dardiri Alwi Suddin Amalia Lusiana Aminnudin, Aminnudin Andoko Andoko, Andoko Anggun Septiani Widorini Arie Marbandi Arif Dwi Putranto Arif Triyanto Aripriharta - Ariyanto, Sudirman Rizki Arlisah Amary Ata Syifa’ Nugraha Azridjal Aziz Baihaqie Danuputra Sudrajat Bili Darnanto Susilo Dadang Purwo Ariwidodo Deo Widika Alamsyah Desinta Dwiki Nurfauziah Devangga Dio Putra Arifin Dines Olivia Margareta Erdi Erdi ERNI WIDAJANTI Falaq Ikhzal Suganda Fuad Indra Kusuma Ganie Ganie Handoko Handoko Heri Kiswanto Heru Suryanto Ika Liestianingsih Imam Sudjono Indri Robiatul Adawiyah Ineke Kusuma Indriani Kurnia Halimatus Solikhah Marsono Marsono Melisa Surya Andini Moh. Ansori Mohammad Adifa Betha Nanda Mudinillah, Adam Muhamad Syaifuddin Muhammad Afnan Habibi Muhammad Hersan Arifin Muhammad Yandi Pratama Nadya Syawitri Naufal Anis Mubarok Nindy Pramudita Nova Kurnia Rahmadani Nur Shasmitta Zaen Nurhanifam Nurhanifam Pingkan Sihassaleh Pramono Pramono Pramuko Ilmu Purboputro Rahmat Iman Mainil Ratna Ratna Retno Indah Pangestuti Retno Wulandari Ridho Riski Hadi Riduwan Prasetya Rizki Nugianto Rizki Praham Sutarno Rohani Ganie Rohani Rohani Roza Febrianti Sakib Nurcholish Anshari Shavira Azzahra Sudirman Rizki Ariyanto Sujito Sujito Sukarni Sukarni Sumarno Sumarno Suprihatmi Sri Wardiningsih Suwarno Suwarno Syarifudin Dwi Prasetyo Tabita Tyasyarani Via Fitri Permatasari Virlia Nanda Ristia Wara Sinuhaji Yanuhar, Uun Yoga Yuniadi Zory Satrio Nugroho