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Journal : R.E.M (Rekyasa Energi Manufaktur) Jurnal

The Effect of Motorcycle Wheels (Original Equipment Manufacturer) Reconditioning Process on Mechanical Properties and Microstructure Nasution, Ahmad Kafrawi; Alfindo; Sunaryo
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 9 No 2 (2024): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v9i2.1714

Abstract

Wheels are an essential component of a vehicle. Material damage or failure on casting wheel-type wheels is primarily because these wheels receive a reasonably hard impact load due to uneven road conditions or potholes. This condition makes the wheels unable to function normally, and components must be replaced. Given the relatively high cost of replacing wheels, several options are offered to vehicle owners (consumers) to have their wheels reconditioned. This study aims to analyze the effect of the reconditioning process on the mechanical properties and microstructure of the casting wheel material. The sample material is taken from the Original Equipment Manufacturer (OEM) wheel casting wheel in the Disk section for impact testing, Rim for hardness, and microstructure tests. The results are that the reconditioning process affects the mechanical properties and microstructure of the original equipment manufacturer (OEM) alloy wheel material. The decrease in hardness value was 68.86 HBW to 61.59 HBW from the conditions before and after reconditioning. The impact test results where the impact energy absorption is greater after reconditioning is 29.24 J, and the average impact value for wheel specimens after reconditioning is 0.2902 J/mm2. The impact energy value before reconditioning is 7.87 J, and the average impact value is 0.0973 J/mm2. The microstructure obtained is hypereutectic, and the reconditioning process has little effect on the dendritic structure.
Design and Manufacturing of the Steering System in the KMHE Laksamana V 1.0 Prototype Vehicle Istana, Budi; Aydil Hijerah Harahap; Sunaryo
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 10 No 2 (2025): Desember (in Progress)
Publisher : Universitas Muhammadiyah Sidoarjo

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

Abstract

The Energy Efficient Car Contest (Kontes Mobil Hemat Energi or KMHE) is a national competition in Indonesia that challenges university students to develop ultra-efficient prototype vehicles. This study presents the design, simulation, and manufacturing of a custom steering system for the Laksamana V 1.0 single-passenger prototype vehicle developed by Team Laksamana. The steering system was engineered to meet strict requirements for weight, structural reliability, ergonomic fit, and maneuverability under competition conditions. A rack-and-pinion mechanism was selected after comparative evaluation of multiple steering concepts. Computer-Aided Design (CAD) and Finite Element Analysis (FEA) were employed to optimize the geometry and assess the mechanical strength of key components, including a tie rod made from SUS 201 stainless steel. The manufactured system weighs 3.74 kg, delivers a steering ratio of 12:1, and requires 2.8 Nm of torque, ensuring both agility and driver comfort. Although the measured turning radius was 6.3 meters—above the original target—it remains functional for KMHE circuits. FEA results confirmed that all structural stresses and deformations were well within safe limits, validating the design’s stiffness and durability. Overall, the developed steering system is reliable, efficient, and suitable for application in energy-efficient vehicle competitions.
Co-Authors Abdul Rokhim Achmad Husen Aditya Alif Rama Agung Wahyu Nugroho, Agung Wahyu Agus Triono Ahmad Fati’in Ahmad Kafrawi Nasution, Ahmad Kafrawi Ahmad Zazili Alfindo Amanda, Nuresa Divani Andriyani Agus Ardiansyah, Irawan ARIF KURNIAWAN Aulia Nisa’ul Khoir Aydil Hijerah Harahap Azansyah Bagus handoko Bambang Sunardi Bina Ikawati Bunga Aditi Chatarina Eka Berliyanti Putri Cici Sucianingsih Daffa Harkansas, Daud Denadia, Aliffia Mauli Dhea Aulia Putri Dina Chamidah DK, Muhammad Putra Dona Tri Ardillah Dr. Mudawamah Ekaputri, Retno Agustina El Syam, Robingun Enawar Estiko, Reza Euis Bandawaty Farizal Firdaus Firda Rachmawati Firdaus Asyhar Firmansyah, Ade Arif Firyaliza Alya Yafiina Fitoni Nuradila, Muh. Batistuta Frammudya, Muhammad Gunardi H.M Hermansyur Habibie, Dian Hadi Nasbey Hani Hasanah Hanifah Nurhayati Hermanto Hermawan Hermawan Heru Nugroho I Gede AB Wiranata Indah Zianira Fitri Indra Hasan, Indra Kartikaningsih, Dewi Kasmawati Khaerunnisa Yulia Handayani Khairun Nisa, Salsabila Koesmantoro, Hery Kristianto, Sonny Kurniawan, Safrudin Legisnal Hakim Legisnal Hakim Lestyoningrum, Sinta Dewi M. Furkon Hakim Marmi Mawardi Mira Ziveria, Mira Mizani Ahmad Muhamad Apriansyah Ramadhan Muhammad Adib Kurniawan Muhammad Rifky Yuwanto Muhtadi Mujiani, Sari Mulaksito Mulyadi, Rekyan Woro Nopiah, Ririn Nunung Rodliyah Nur Faris Prih W Octavia, Ika Pandu Apriliansyah Permana , Bagus Pramita Laksitarahmi Isrianto Prasetya, Bayu Andy Prasetyo E. W., Agustinus Purwana E.S., Dedi Purwatiningsih, Yuni R. Alamsyah Ramadhan Rafie Achmad Prayoga ramadhanty, erlinda shella Ramdani Rakasiwi, Gama Rangga Wardana, Ilham Sucipto Resi, Septian Ria Wierma Putri, Ria Wierma Rizka Wahyuni Amelia Sabillal Irfan Mulyana Putra Saparuddin Saragih, Zainul Sarah Imelda Sepriyadi Adhan S Septian Aryatama Sheila Dewi Ayu Kusumaningtyas Shella Ramadhanty, Erlinda Sinaga, Herfin Naufal Sonny Kristianto Sri Poerwati1, Ari Probandari2, Joko Sutrisno3, Ari Handono Ramelan4 SULASTRI Suparno Suradi Tarmiati, Erni Tri Wijayanti Udianto, Fauzi Umara Firman Rizi D Upik Rahma Fitri, Upik Rahma Vivian Karim Ladesi Wawan Riyanta Wibowo, Agustinus P. Edi Widyastuti, Candra Wilujeng, Sukian Winda Ardiani Wisnu Nugroho Yayah Huliatunisa Yusanti, Leni Yusril Mahendra Yuwono Wiarco