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All Journal Jurnal Transportasi Rekayasa Mesin Jurnal Rekayasa Mesin Journal of Energy, Mechanical, Material and Manufacturing Engineering CANTILEVER Jurnal Elemen Prosiding SNITP (Seminar Nasional Inovasi Teknologi Penerbangan) Jurnal Perkeretaapian Indonesia (Indonesian Railway Journal) E-Link: Jurnal Teknik Elektro dan Informatika International Journal of Mechanical Engineering Technologies and Applications (MECHTA) TEKIBA : Jurnal Teknologi dan Pengabdian Masyarakat Prosiding Seminar Nasional Sains Teknologi dan Inovasi Indonesia (Senastindo) Mechanical Engineering for Society and Industry Madiun Spoor : Jurnal Pengabdian Masyarakat Automotive Experiences Eksergi: Jurnal Teknik Energi Jurnal Pengabdian Kepada Masyarakat Semangat Nyata Untuk Mengabdi Journal of Railway Transportation and Technology Berkala Forum Studi Transportasi antar Perguruan Tinggi Jurnal Penelitian Transportasi Darat
Wirawan, Willy Artha
Universitas Negeri Surabaya, Indonesia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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Advanced computational techniques for predicting 3D printing distortion in selective laser melting processes of Aluminium AlSi10Mg Moch. Agus Choiron; Anindito Purnowidodo; Achfas Zacoeb; Gembong Edhi Setyawan; Willy Artha Wirawan; Yudhi Ariadi; Allan E.W. Rennie; Diva Kurnianingtyas
Mechanical Engineering for Society and Industry Vol 5 No 1 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12581

Abstract

Distortion for 3D printing using Selective Laser Melting (SLM) on AlSi10Mg aluminium is an important issue that affects the final manufactured product. This research aims to develop a finite element method (FEM)-based computational simulation and experimental validation to predict distortion in 3D printed products using SLM. The study results found that the variation of 3D printing position affects the resulting product's distortion and mechanical properties. The 90° part print position results in smaller distortion of 0.303 and 0.335 mm than the 0° part print position of 0.329 and 0.378, respectively, making it more suitable for high-precision applications. This study confirms the importance of scan orientation in controlling distortion in the SLM process, which can be used as a guide for optimal printing parameters. With proper orientation selection, the risk of distortion or defects in SLM products can be minimised, and industrial production efficiency can be improved.
Evaluation of dimensional accuracy on SLM product using 3D laser scanner Moch. Agus Choiron; Anindito Purnowidodo; Achfas Zacoeb; Rosadila Febritasari; Willy Artha Wirawan; Imam Kusyairi; Johan Wayan Dika
Mechanical Engineering for Society and Industry Vol 5 No 2 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.13448

Abstract

Dimensional accuracy is a critical factor in additive manufacturing, especially in Selective Laser Melting (SLM). Recently, many studies had investigated the SLM process and products, but studies on the evaluation of SLM printing product to check the dimensional accuracy have not been explored. This study investigates the dimensional accuracy of SLM products by employing a 3D laser scanning technology and evaluate the compatibility between CAD designs and the final SLM printed products. The 3D laser scanning is performed using a high-precision 3D laser scanner, then continued by comparison with the CAD model through Geomagic Control X software. Dimensional accuracy was measured using visual and statistical parameters such as color graphic and deviation. Results showed that deviation of SLM printed products was within the tolerance range of ±0.1 mm. The main factors that affect accuracy are printing laser speed and print orientation. The 3D laser scanning technology proved to be effective for evaluating the dimensional accuracy of SLM printed products. This study contributes to develop the quality control methods in the field of metal-based additive manufacturing.
The Effect of Adding Corn Cob Inhibitor to Primer Paint as a Corrosion Retardant On Train Roofs (Mild Steel SS 400) Akbar Zulkarnain; Edi Nyoto Setyo Marsusiadi; Achmad Sholih Zidni; Dadang Sanjaya Atmaja; Willy Artha Wirawan
Journal of Railway Transportation and Technology Vol. 5 No. 1 (2026): March
Publisher : Politeknik Perkeretaapian Indonesia Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37367/jrtt.v5i1.84

Abstract

Corrosion is one of the main problems that can reduce the quality and service life of steel materials in the railway industry, especially on train roofs made of SS400 mild steel. This study aims to examine the effectiveness of adding natural inhibitors from corn cob ash to epoxy primer paint in inhibiting the rate of corrosion and increasing the adhesive strength of the paint. The inhibitor was made through a process of extracting silica from corn cob ash and mixing it into the primer paint at various concentrations. Fourier Transform Infra Red (FTIR) testing was used to identify the silica content in the inhibitor, while testing was carried out on the adhesive strength using an adhesion tester and the corrosion rate using the weight loss test method in HNO₃ solution. The results showed that the addition of corn cob ash inhibitor formed a protective layer on the metal surface, improved paint adhesion, and significantly reduced the corrosion rate. This study demonstrates that the use of agricultural waste such as corn cobs as a natural inhibitor is an innovative, economical, and environmentally friendly solution for controlling corrosion in steel materials in the railway industry.
Collapse Behavior and Energy Absorption Characteristics of Design Multi-Cell Thin Wall Structure 3D-Printed Under Quasi Statistic Loads Willy Artha Wirawan; Bambang Junipitoyo; Setyo Hariyadi Suranto Putro; A’yan Sabitah; Ahmad Hamim Suudy; Ridwan Ridwan; Moch. Agus Choiron
Automotive Experiences Vol. 7 No. 1 (2024)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.10892

Abstract

Crashworthiness is a passive device that has an important function as an absorbing component of the impact energy resulting from an accidental event. The main problem in the crashworthy design is the dimensional limitation on the front end of the vehicle with the driver so that most of the energy absorption is limited. Besides, the complexity of crashworthiness design is difficult to make conventionally. This research aims to find out the effectiveness of crashworthiness design in energy absorption and the resulting deformation patterns. Crashwortines are made in a multi-cell shape using PLA material and printed using a 3D printing raise machine. Crashworthiness is produced with four variation shapes of a Multi-cell circle (MCC), Multi-Cell square (MCS), Multicell pentagonal (MCP), and Multi-Cell pentagonal circles (MCPC) with a side thickness of 2 mm and a length of 150 mm. Experimental quasi-static testing is carried out in the frontal direction using a UTM machine at an operating speed of 2mm/s. The results of the study show that the design of the crash box of the pentagon circle has a significant increase in the energy absorption value of 62.49%, which can be recommended in future impact resistance tube designs. The characteristics of the deformation pattern and the failure resulting from the crashworthiness tend to form the pattern of the bending lamina failure. Failures can occur due to plastic fold, elastic bend, and pressure deformation mechanisms followed by new folding formations (lobes).
The Influence of Aluminum Thickness on Energy Absorption and Stability of Circular Crash Box Performance Under Axial Load Diah Wulandari; Harus Laksana Guntur; Sigit Tri Wicaksono; Willy Artha Wirawan
Automotive Experiences Vol. 8 No. 3 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.15149

Abstract

The need for improved vehicle safety, particularly in the face of rising road traffic accidents, makes the optimization of crash box designs crucial. This study addresses the impact performance of circular cross-section crash boxes, focusing on how variations in aluminum thickness affect energy absorption and deformation behavior under axial impact loading. A combination of numerical simulations and experimental tests was used to evaluate the crash box performance across different aluminum thicknesses ranging from 1 mm to 3 mm. The results show that increasing thickness improves energy absorption, with the 3 mm thick specimen absorbing the highest energy of 7.3089 kJ, while the 1 mm specimen absorbed only 1.1018 kJ. However, thicker specimens exhibited higher peak forces and force fluctuations, suggesting potential instability after the peak load, while intermediate thicknesses 1.5 mm and 2 mm provided a better balance of energy absorption and structural stability. This research contributes to the development of more efficient crash box designs by providing insights into the optimal material thickness for crashworthiness, with a recommended thickness range of 1.5 mm to 2 mm.
Co-Authors ,, Sunardi Achfas Zacoeb Achmad Sholih Zidni Adya Aghastya Adya aghastya Aghastya, Adya Ahmad Bahrawi, Ahmad Ahmad Hamim Suudy Akbar Zulkarnain Akbar Zulkarnain Akhwan Akhwan Akhwan, Akhwan Akwan, Akwan Aldi Wardana Aldri Frinaldi Allan E.W. Rennie Anindira Listy Hartisa Anindito Purnowidodo Arief Darmawan Ary Putra Iswanto Astuti, Septiana Widi A’yan Sabitah Balla Wahyu Budiarto Bambang Junipitoyo Dadang Sanjaya Atmaja Damayanti, Ajeng Tyas Dhina Setyo Oktaria Diah Wulandari Diva Kurnianingtyas Edi Nyoto Setyo Marsusiadi Ekananta, Krisna Pramudya Ependi, Ahmad Fadli Rozaq Fadli Rozaq Fadli Rozaq Fahrur Rozi Fauzi, Wahyu Nur Febri Pandu Wijaya Gembong Edhi Setyawan Gunari, Bambang Gunarti, Monika Retno Hadi Prayitno Handoko Handoko Hari Boedi Wahjono Harus Laksana Guntur Imam Kusyairi Imron, Nanda Ahda Iswanto, Ary Putra Johan Wayan Dika Lailya, Alvi Lutfyani Luqman Afandi, Muhammad Marwan Effendy Moch. Agus Choiron Moch. Agus Choiron Moch. Agus Choiron Mukhlis Muslimin Muslimin, Mukhlis Nanda Ahda Imron Natriya Faisal Rachman Natriya Faisal Rachman Nurul Fitria Apriliani Oki Kurniawan Palungan, Musa Bondaris Pambudi, Ardhenta Sigit Pambudiyanto, Nyaris Pegah Hamedani Pradipta, Andri Prawoto, Agus Puspitasari, Mariana Diah Putra, Rafli Rianzah Rachman, Natriya Faisal Rafli Rianzah Putra Rahma, Muchamat Ardistiya Rezki Putra Ridwan Ridwan Robittah, Ahmad Rosadila Febritasari Royyan Ghozali Rozaq, Fadli Rozaq, Fadli Sabitah, A'yan Sakti, Gunawan Santi Triwijaya Septiana Widi Astuti Setyo Hariyadi Suranto Putro Sigit Tri Wicaksono Sofyan Arief Sofyan Arief Setyabudi sunardi sunardi Sunardi Sunardi Sunardi Sunardi Suprapto Suprapto Suyatmo Teguh Arifianto Teguh Dwi Widodo Wahyono Suprapto Wahyu Tamtomo Adi Wahyu Tamtomo Adi, Wahyu Tamtomo Widodo, Teguh Dwi Wulansari, Ajeng Yudhi Ariadi Yustina Titin Purwantiningsih Zulkarnaen, Akbar Zulkarnain, Akbar