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Kris Witono
Jurusan Teknik Mesin Politeknik Negeri Malang
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Journal : Asian Journal Science and Engineering

 1 
Optimizing Flexibility in SUP9 Leaf Springs: The Synergistic Effect of Tempering Temperature and Holding Time Kris Witono; Agustriyana, Lisa; Hadi Susilo, Sugeng
Asian Journal Science and Engineering Vol. 4 No. 1 (2025): Asian Journal Science and Engineering
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/ajse.v4i1.1886

Abstract

This study investigates the influence of tempering temperature and holding time on the flexibility of SUP9 steel leaf springs, addressing a practical need for enhanced vibration absorption in heavy-duty vehicles operating on irregular terrain. An experimental study was conducted using a full factorial design with three temperature levels (450°C, 550°C, 650°C) and three holding times (15, 20, 25 minutes). Flexibility was quantified by measuring the maximum deflection in a three-point bending test. The results demonstrate a strong, positive correlation between the tempering parameters and flexibility. The optimal flexibility (47.76 mm deflection) was achieved at the highest treatment condition of 650°C with a 25-minute holding time, representing an 83% improvement over the least effective treatment. ANOVA results confirmed that temperature, holding time, and their interaction are all statistically significant factors (p < 0.05). These findings provide a practical, data-driven guideline for manufacturing more resilient and comfortable leaf springs by optimizing heat treatment protocols.
Co-Authors Abd. Muqit Agus Hardjito Agus Harijono Agus Setiawan AGUS SETIAWAN Agus Sujatmiko Akhlis Rizza, Muhammad Akhmad Faizin Akhmad Faizin Akka Sunoko Amrullah, Miftahul Asrori , Asrori Asrori Asrori Bagus Wahyudi Bambang Irawan Bambang Irawan Bayu Pranoto Bima Cahya Maula Dana Budi Eko Prasetyo Danang Risky Suhadi Dani, Agus Duratun Nasiqiati Rosady, Siti Eka Perkasa, Rilis Eko Yudiyanto Elka Faizal Elka Faizal Etik Puspitasari Etik Puspitasari, Etik Faizal, Elka Gumono Gumono Gunawan, Chandra Hadi Samsul Hadi Susilo, Sugeng Hangga Wicaksono Hangga Wicaksono Harie S Jaya Harijono, Agus Haris Puspito Buwono Heru Prasetyo Heru Suryanto Heryanto Heryanto Kasijanto Kasijanto Kasijanto, Kasijanto Lisa Agustriyana Listiyono Moh. Hartono Moh. Nasir Mohammad Noor Hidayat Muhammad Fakhruddin NASIR, MOH. Nugroho, Pipit Wahyu Nurhadi Pondi Udianto Pranoto, Bayu Purwoko Purwoko Putu Wijaya Sunu R.N. Akhsanu Takwim, R.N. Akhsanu Rahmad, Cahya Raihan Insan Nararya Ratna Monasari Rifa’i, Muhamad Riskitasari, Septyana Risno Bayu Riswan E.W. Susanto Riswan E.W. Susanto Robbi Malik Rudy Soenoko Sadar Wahjudi Samsul Hadi Sarjiyana Satworo Adiwidodo SEPTYANA RISKITASARI Siti Duratun Nasiqiati Rosady Subagiyo Subagiyo Sugeng Hadi Susilo Sugeng Hadi Susilo Sulistyono Sulistyono Syamsul Syamsul Hadi Syamsul Ph.D M.A. Hadi Talifatim Machfuroh Talifatim Machfuroh Talifatim Machfuroh, Talifatim Walid, Achmad Wicaksono, Hangga Wirawan , Wirawan Yudy Surya Irawan Yuniarto Agus Winoko Zakki Fuadi Emzain