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All Journal Jurnal Akuntansi dan Sistem Teknologi Informasi Jurnal Ekonomi dan Kewirausahaan Manajemen Sumber Daya Manusia Bulletin of Electrical Engineering and Informatics Jurnal Produksi Tanaman Jurnal Prima Edukasia Jurnal Sejarah Citra Lekha Benefit: Jurnal Manajemen dan Bisnis Journal of Mechanical Engineering Science and Technology Turbo : Jurnal Program Studi Teknik Mesin Tawarikh : Journal of Historical Studies JAUR (Journal of Architecture and Urbanism Research) Adi Widya : Jurnal Pengabdian Masyarakat ASRO JOURNAL - STTAL Jurnal Riset Pendidikan Dasar Jurnal SPORTIF : Jurnal Penelitian Pembelajaran JOURNAL OF SCIENCE AND SOCIAL RESEARCH JAKP (Jurnal Administrasi dan Kebijakan Publik) Veteran Law Review Humaniora Jurnal Equity Puteri Hijau : Jurnal Pendidikan Sejarah Jurnal Fundadikdas (Fundamental Pendidikan Dasar) Jurnal Ilmiah Edunomika (JIE) SIGn Jurnal Hukum Jurnal Review Pendidikan Dasar : Jurnal Kajian Pendidikan dan Hasil Penelitian ARBITER: Jurnal Ilmiah Magister Hukum Al-Hikmah Media Dakwah, Komunikasi, Sosial dan Kebudayaan Jurnal Graha Pengabdian Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Jurnal Hukum Lex Generalis Jurnal Hukum Kaidah: Media Komunikasi dan Informasi Hukum dan Masyarakat BIOLOVA Abdi Masya IJORER : International Journal of Recent Educational Research GOVERNANCE: Jurnal Ilmiah Kajian Politik Lokal dan Pembangunan Indonesian Journal of Sport Management Jurnal Ekonomi Warisan: Journal of History and Cultural Heritage Locus: Jurnal Konsep Ilmu Hukum Sibatik Journal : Jurnal Ilmiah Bidang Sosial, Ekonomi, Budaya, Teknologi, Dan Pendidikan COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat Society: Jurnal Pengabdian Masyarakat International Journal of Social Science, Education, Communication and Economics Utsaha: Journal of Entrepreneurship Jurnal Ilmu Hukum, Humaniora dan Politik (JIHHP) Journal of Legal and Cultural Analytics (JLCA) Jurnal Ilmiah Administrasi Pemerintahan Daerah SEIKAT: Jurnal Ilmu Sosial, Politik dan Hukum Jurnal Muassis Pendidikan Dasar Jurnal Sejarah Islam Abdibaraya: Jurnal Pengabdian Masyarakat Causa: Jurnal Hukum dan Kewarganegaraan Journal of Law & Policy Review Jurnal Pengabdian Masyarakat Mentari Equity
Suprayitno Suprayitno
Departemen Ilmu Sejarah, Fakultas Ilmu Budaya USU
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Other

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Journal : Journal of Mechanical Engineering Science and Technology

 1 
Study on Effect of 3D Printing Parameters on Surface Roughness and Tensile Strength Using Analysis of Variance Fadillah, Faqih; Suryanto, Heru; Suprayitno, Suprayitno
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 7, No 2 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v7i22023p096

Abstract

Fused deposition modeling of 3D printing is the process of making workpieces or parts by adding filaments to each layer. Some indicators of a high-quality product of 3D printing are the precisions dimensions, the surface roughness, and tensile strength. This research aims to find the parameters most affecting surface roughness and tensile strength. The research design used an experimental method with input parameters: (1) print speed (15-35 mm/s), (2) print temperature (200-210°C), (3) layer height (0.1 – 0.3 mm), (4) infill line directions (0-90°), and dependent variables were surface roughness and tensile strength. The data distribution used the L9 orthogonal array, and the statistic analysis used ANOVA. Material uses nanographite-reinforced polylactic acid (PLA) filament. The results indicate that print parameters that significantly affect surface roughness are layer height and infill line directions. The best surface roughness on the layer height parameter is 0.1 mm, and the infill line directions parameter is 90°. Based on ANOVA analysis, print speed, print temperature, and layer height do not significantly affect tensile strength, but infill line directions significantly affect tensile strength. The best tensile strength on infill line directions is 90°. The best average tensile strength with nanographite-reinforced PLA filament is 38.56 N/mm2, with 35 m/s print speed, 205 °C print temperature, 0.1 mm layer height, and 90° infill line direction parameter. The best average surface roughness with nanographite-reinforced PLA filament is 0.66 µm, with 35 m/s print speed, 205 °C print temperature, 0.1 mm layer height, and 90° infill line direction parameter.
Simulation of the Performance of Kevlar Impregnated Shear Thickening Fluid Ballistic Test Results (STF) Ballistic Test Results Prasetya, Riduwan; Andoko, Andoko; Suprayitno, Suprayitno; Wulandari, Retno; Trihutomo, Prihanto; Mishima, Kenji; Janas, Dawid
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 8, No 1 (2024)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v8i12024p054

Abstract

This study explores the enhancement of Kevlar fabric’s ballistic performance through impregnation with Shear Thickening Fluid (STF) for potential application in soft body armor. The experimental approach often fails to elucidate mechanical phenomena critical for the development of lightweight and high-strength body armor designs. To address this limitation, the finite element method, specifically using ANSYS/LS-DYNA R.13, was employed for a comprehensive analysis. The simulation aimed to evaluate the impact of STF on Kevlar fabric by assessing projectile velocity, force exerted by the projectile onto the fabric, displacement, stress distribution, and fabric failure mechanisms. Kevlar yarn was modeled as a shell element formed into fabric with a sine wave profile, investigating two types of STF: SiO2-PEG200 (S0) and SiO2-PEG200-B4C (S1), differing in maximum viscosities. The addition of STF resulted in increased coefficients of friction on Kevlar, with the highest values observed for the SiO2-PEG200-B4C impregnated fabric (  =0.87 and =0.82). The incorporation of the second STF type (S1) significantly reduced the projectile’s velocity from an initial 200 m/s to 153.2 m/s upon impact. Additionally, the force on the S1 fabric surged to 121,556 N, a threefold increase compared to neat Kevlar. STF's influence was further evidenced by enhanced fabric displacement and more uniform stress distribution upon ballistic impact. The fabric's thickening upon failure indicated STF's ability to enlarge the deformation area, facilitating uniform distribution of ballistic kinetic energy across the impact zone. Notably, the fabric impregnated with the second type of STF, featuring boron carbide (S1), demonstrated superior ballistic performance. This study concludes that STF-impregnated Kevlar fabric, particularly the SiO2-PEG200-B4C variant, not only surpasses the ballistic performance of neat Kevlar but also meets the criteria for NIJ Level IIIA standards, highlighting its potential as a highly effective material for advanced soft body armor designs.
Metal Casting Furnace Design Development Using Computer Simulation Irianto, Ramadhan Wahyu; Pradana, Yanuar R.A.; Suprayitno, Suprayitno
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 8, No 1 (2024)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v8i12024p001

Abstract

Metal foundries still rely heavily on crucible furnaces. The current furnace design, which is currently being used by the partner industry, has been found to be not properly designed and will result in a reduction in efficiency. CFD simulation will be used to find the optimal melting furnace design. This research simulation consists of 3 stages: pre-processing, solving, and post-processing. There are two furnace geometries, cylindrical and hexagonal, while the burner location will be divided into 3 positions, namely P1, P2, and P3. The most optimal furnace design will be used as a basis for the verification testing process. The process of comparing the old and the new smelting furnace design is carried out to understand the performance and characteristics of each furnace. The simulation results for the average crucible temperature in the cylindrical furnace were obtained as follows: 288.5 ºC for the P1 burner, 306.2 ºC for the P2 burner, and 284.5 ºC for the P3 burner. Meanwhile, the simulation results show that the average crucible temperature value in the hexagonal furnace is 290.0 ºC for the P1 burner, 281.6 ºC for the P2 burner, and 237.8 ºC for the P3 burner. The verification testing process produced an average crucible temperature value of 237.5 ºC. Furthermore, the comparison test from the old and new furnace designs to melt 2.5 kg of aluminium at 680 ºC with the old furnace took approximately 30 minutes and 33 minutes with the new furnace. The new furnace produced much more uniform melting than the old furnace.
Design of Shielded Metal Arc Welding Parameters For Optimum Tensile Strength Using Taguchi Method Setiawan, Moh. Dedy Indra; Pradana, Yanuar Rohmat Aji; Suprayitno, Suprayitno
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 5, No 2 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v5i12021p073

Abstract

Shielded Metal Arc Welding (SMAW), an arc welding process, is widely used in applications. In practice, SMAW is widely applied to the welding process on hollow square pipe. Performance expected from this welding is the tensile strength of weld joint. The tensile strength is influenced by parameters process which have possibility for an optimization process to become ‘robust’. Robust is a design which less sensitive to the effect of uncertain quantities or noise factors. Taguchi method is the most efficient optimization method which accommodates the noise factors effect and requires less experiment. This study is focusing on optimizing the welding process on hollow square pipe. Parameters process such as welding current (I), electrode angle (θ), root gap (d) and electrode type (E) are adopted as parameters design. Taguchi method are chosen as a strategy and L9 fractional orthogonal array are chosen as the design experiment, which only 9 experiment samples needed from 81 experiments that should have been carried out for full factorial design. The objectivity is to maximize the tensile strength of weld joint. Three replications of L9 fractional orthogonal array Taguchi had been performed to generate the tensile strength and estimates the fluctuation of the output caused by noise factors. This study found that the welding current of 100A (I), electrode angle (θ) of 90°, root gap (d) of 2 mm, and electrode type (E) of E7018 produce the optimum results. Tensile strength improved from this robust parameter design is about 98.39 MPa based on initial parameter design.
Co-Authors Abd. Rasyid Syamsuri Abdi Dewi Setyana Adam, Putri Maulia Addakhil, Muhammad Fazlur Rahman Adi Mansar Adinda, Utami Putri Wahyu Afridah, Afridah Agung Witjoro Agus Sutanto Agustina, Ida Deliyanti Agustining, Agustining Albadi Sinulingga Alnas, Mujib Medio Amin Wahyudi Andoko Andoko, Andoko Ariati, Viola Verli Ariesta, Inda Ariyanto, Sudirman Rizki AYU LESTARI Beny Saputra bintang nusantara, andre Brigitta Silitonga Budiono, Novera Andri Cristian, Yosep Dwi Darmanta, Darmanta Darmawati, Endang Dayu, Dian Permatasari Kusuma Dhina Mustikaningrum Dian Pertiwi Dimas Prayoga, Aditya Galuh Dyssa Novita embiring, Rosnidar Sembiring Endah Rahmawati ERNI WIDAJANTI Fahmi, M. Fitrul Faqih Fadillah Fauzi, Willy Achmat Ferari, Matthew Bias Fitri Wahyuningsih Fitria Hidayati, Fitria Hannandi, Abdill Harahap, Rosnaubah HASIM PURBA Hastono, Widi Herry Prasetyo Heru Suryanto Hery Prasetya Hery Prasetyo, Hery Husein, Sandra Hutabarat, Nidea Novresia Indarto Indarto Irianto, Ramadhan Wahyu Isnani Isnani Janas, Dawid Jelly Leviza Julianto Julianto Khairiyah, Yaumil Khusnul Ain Kiettikunwong, Narong KRISTIAWAN KRISTIAWAN Larasati, Nike Legowo, Legowo Magdalena Nany Maharani, Shafa Nabilla Dwi Annisa Maimunah, Maimunah Malik, Maryana Malkany, Fadhil Yusuf manalu, bobbi irianto Marbandi, Arie Marjam Desma Rahadhini Marjono, Sri Mar’ie Muhammad Setianegara Maulidi Firlandiana Mia Cholvistaria, Mia Miliandy, Devino Mintohari, Mintohari Mishima, Kenji Moh Yasin Mudinillah, Adam Muhammad Yamin Muhammad Yamin Lubis, Muhammad Yamin Muzaqi, Safrial Ahmad Nadhira, Putri Nanda, Putri Widiyanti Nasution, Adli Dzil Nasution, Aulia Muflih Nawawi, Vivi Damayanti Neneng Yulia Barky Ngazizah, Nur Nuhung, Nuhung Nuraini, Arfiani Ika Nurkadri, Nurkadri Nurlaily, Vivi Astuti Ok Saidin Palupi, Dyah Ayu Puri Pambudi, Muhammad Pamungkas, Reza Bagus Perala, Iwan Pradana, Yanuar R.A. Pradana, Yanuar Rohmat Aji Prasetya, Herry Prasetya, Riduwan Pratama, Muhammad Yandi Prihanto Trihutomo Priseillia Santoso, Rut Oryza Purba, Ayu Mustika Purba Purnama Putra, Mario Purwito, Arip Putranto, Arif Dwi Putri, Elsha Ilham RACHMADYANTI, PUTRI Rahimah Rahmawati, Nala Rahmawati, Rahmawati Ratna Ratna Rejeki, Sari Tri Retno Wulandari Ricky Setiawan Rina Susanti Rispantyo Rispantyo, Rispantyo Ritonga, Syarifah Hasna Rohmawati, Deny Yuli Rosnidar Sembiring Rukmi, Asri Susetyo Sagasya, Denisa Putri Samsul Bahri Savitri, Fania Mutiara Selvia, Fitriana Setiawan, Moh. Dedy Indra Sevia, Innegie Silaban, Edward SINAGA, HENRY Sitanggang, Dani Wijaya Fauji Siti Fahwiza, Siti Fahwiza Siti Sara Sitorus, Boni Fransius Suddin, Alwi Sujito Sujito Suprihatmi Sri Wardiningsih Supriyadi, Mikhael Ananda Supriyono Supriyono Suri, Nursukma Suryanti Susetyo R, Asri Sutarno Sutarno Syafira, Raisa Putri Syafira, Rizki Putri Syahira Sumantri, Nabila Syahri, Alvin Syahrial, Yoppi Syamsuri Tahapary, Yuneth Takarub, Kukuh Derajat Tanjung, Khairunissa Isyarah Teodoran, Vincent Tony Tony Triyanto, Arif Tyasyarani, Tabita Ulfah, Sri Mujiarti Wau, Hilbertus Sumplisius M. Wicaksono, Christian Wiryanto Wiryanto Yani Febriani, Yani Yogasworo, Nita Arbi Yoka Putri, Arizkylia Yoppi, Syahrial Yosua Leo Ezra Roito Simamora Yuli Budiati Yuliana, Fitri Eko Yuliantoro, Septian Eko Yuni Wulansari, Yuni Zaidar, Zaidar Zuliana, Deni