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M. Fendy Kussuma Hadi Sufyan
Universitas Tidar
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Design of Jominy Hardenability Testing Equipment in Accordance with ASTM A255 Standard Muhammad Isdy, Rizky; Listyanda, R. Faiz; Kussuma Hadi Sufyan, M. Fendy; Tafga Arfanindita, Her; Taufik, Ikhwan
Jurnal Rekayasa Mesin Vol. 20 No. 3 (2025): Volume 20, Nomor 3, Desember 2025
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v20i3.7149

Abstract

This study discusses the design and development of a Jominy Hardenability Test apparatus based on the ASTM A255 standard, which is used to determine the hardenability of metallic materials, particularly steel. The purpose of this research is to produce a Jominy testing device that meets standard specifications, perform structural analysis using CAD Software, and evaluate the functional performance of the manufactured tool. The research method consists of several stages, including 3D design using CAD Software, structural analysis simulation with the Finite Element Analysis (FEA) method covering von Mises stress, displacement, and safety factor, followed by the manufacturing process according to the design results. The simulation results show a maximum stress of 2.039 × 106 N/m², a maximum displacement of 5.8 × 10⁻¹ mm, and a safety factor value of 2.6, indicating that the design is structurally safe for production. The manufacturing process uses galvanized as the frame, body material and includes an additional cooling fan to maintain water temperature stability during the quenching process. The functional test results show that the tool can perform quenching effectively, producing a maximum hardness value of 370 VHN and a minimum value of 280 VHN on the steel specimen. This research is expected to contribute as a reference for the development of economical, efficient, and standard ASTM A255 compliant Jominy testing equipment for researh and development.
PENGARUH LAMINAT SERAT RAMI DAN KARBON TERHADAP SIFAT MEKANIK KOMPOSIT HYBRID MATRIKS TUNGGAL EPOXY Sasmito, Cahyo; Adityo Noor Setyo H.D; M. Fendy Kussuma H.S
ELEMEN : JURNAL TEKNIK MESIN Vol. 12 No. 2 (2025)
Publisher : POLITALA PRESS

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Abstract

. Composite materials have developed rapidly over the years and now play an important role in the advancement of materials technology. It is believed that the use of mixed (hybrid) composites between natural fibers and artificial (synthetic) fibers can produce better composites. This research aims to determine the effect of the arrangement of hybrid composite laminates reinforced with hemp fiber and carbon fiber using an epoxy resin matrix on mechanical properties, namely tensile strength and impact toughness. The composite was made using the hand lay up method with variations in the laminate composition, namely Carbon-Hemp-Carbon-Hemp and Hemp-Carbon-Carbon-Hemp. The hemp fiber was treated with alkali by soaking in 5% Naoh for 2 hours. The research results show that of the two specimen variations, the Hemp-Carbon-Carbon-Hemp variation has the highest tensile strength value of 245 MPa with the highest strain reaching 0.074 while the highest elastic modulus in the Carbon-Hemp-Carbon-Hemp variation is 6.04 GPa. Charpy impact testing obtained the highest impact value in the Hemp-Carbon-Carbon-Hemp variation of 0.07762 J/mm².
Analisis Variasi Rapat Dan Tegangan Pada Proses Anodisasi Terhadap Kekerasan dan Ketahanan Aus Paduan Aluminium Rizky, Muhammad Adrian; Mulyaningsih, Nani; Hadi Sufyan, Fendy Kussuma
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i3.315

Abstract

Aluminum alloys are widely used in the automotive industry, particularly for radiators, due to their lightweight nature, good corrosion resistance, and excellent thermal conductivity. However, these materials remain vulnerable to wear from internal erosion and contamination, necessitating additional protection. This study investigates the effects of varying current density and voltage during anodizing on the hardness and wear resistance of 3xxx-series aluminum alloys. The process was carried out in a sulfuric acid (H₂SO₄) electrolyte for 40 minutes using currents of 4 A and 5 A, combined with voltages of 25 V and 35 V. Micro-Vickers testing revealed the highest hardness of 162.63 VHN at 4 A and 25 V, while the best wear resistance was achieved at 5 A and 35 V with a specific wear rate of 0.000302371 mm³/kg (an improvement of 24%).
Pengaruh Pelapisan Zinc Phosphate pada Baja Karbon ST42 terhadap Laju Korosi dan Ketahanan Aus Candra Hermawan, Rio; Mulyaningsih, Nani; Sufyan, M. Fendy Kussuma Hadi
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i3.348

Abstract

This study investigates the effect of zinc phosphate coating duration on the corrosion rate and wear resistance of ST42 steel for maritime applications. The experimental method involved immersion at 90°C with time variations ranging from 10 to 30 minutes. Corrosion rate testing utilized the potentiodynamic method (ASTM G102-89) in a 3.5% NaCl solution, while wear resistance was evaluated using the universal wear method (ASTM G99). The results indicate that the lowest corrosion rate occurred at a 30-minute coating duration (0.00678 mmpy), whereas the highest rate was at 10 minutes (0.08600 mmpy). Optimal wear resistance was observed at 20 minutes, yielding a value of 0.000642 mm³/kg·m. In conclusion, zinc phosphate coating effectively enhances the durability of ST42 steel against corrosive environments and mechanical friction. A 30-minute duration is recommended for maximum corrosion protection, providing a viable solution for extending the service life of maritime components such as anchor chains.
Analisis Karakteristik Karbon Aktif Hasil Pirolisis Kulitkopi Robusta sebagai Karbon Pendukung Katalis PEMFC (Proton Exchange Membrane Fuel Cell) Muhammad Taufiqurahman; Pebi Riyanto; Rany Puspita D; Raka Mahendra S; Arif Rahman S; M. Fendy Kussuma H. S
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 4 No. 1 (2026): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v4i1.1292

Abstract

Proton Exchange Membrane Fuel Cells (PEMFCs) are increasingly developed due to their high efficiency, power density, durability, and environmental friendliness. However, the high cost of platinum catalysts limits their widespread application. Reducing platinum usage through the development of low-cost catalyst support materials is a promising approach. Activated carbon derived from biomass offers a sustainable and economical alternative, particularly when utilizing agricultural waste such as coffee husks, which are often discarded. This study aims to evaluate the characteristics of activated carbon produced from coffee husk waste through pyrolysis as a catalyst support for PEMFCs. Pyrolysis was conducted at 400 °C, followed by chemical activation using 1 M H₃PO₄ and 1 M KOH with a residence time of 90 minutes. The resulting activated carbon was analyzed through proximate analysis to determine moisture content, ash content, volatile matter, and fixed carbon content. The results showed that activation with 1 M H₃PO₄ produced the lowest moisture content (3.4%), the lowest ash content (3.8%), and the highest fixed carbon content (60.5%), while 1 M KOH yielded the lowest volatile matter content (27.7%). Based on these results, activated carbon produced using H₃PO₄ meets the requirements of SNI No. 01/6235/2000 and demonstrates strong potential as a catalyst support material for PEMFC applications.
Pelatihan Perawatan dan Penggunaan Mesin Pemotong Ubi untuk Meningkatkan Produktivitas UMKM Keripik Rumahan di Magelang Her Tafga Arfanindita; Nur Hayati; M. Fendy Kussuma Hadi Sufyan; , Raka Mahendra Sulistiyo
JURPIKAT Vol 7 No 2 (2026)
Publisher : Politeknik Piksi Ganesha Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37339/jurpikat.v7i2.2901

Abstract

Micro, Small, and Medium Enterprises (MSMEs) producing sweet potato chips in Mandiran Village, Salaman District, Magelang Regency face productivity challenges due to the manual slicing process. This method reduces production capacity, causes inconsistent slice thickness, and increases the risk of workplace accidents. Limited technical knowledge also prevents optimal use of existing slicing machines. This program aims to enhance operational capability through training on machine operation and maintenance, based on Standard Operating Procedures (SOP) and occupational safety principles. The method includes needs assessment, development of training modules, machine operation demonstrations, and evaluation of participants’ skills. The results indicate significant improvements in operational competence, work efficiency, and product consistency. The participatory approach also fosters a safer work culture and supports the sustainable adoption of appropriate technology, thereby strengthening the competitiveness of local food-based MSMEs.
Co-Authors , Raka Mahendra Sulistiyo Abdusukri, Aziz Rahatur Adi Wahyono Adityo Noor Setyo H.D Anita Sari Arfanindita, Her Tafga Arif Rahman S Cahyo Sasmito Candra Hermawan, Rio Dedy Kurniawan Deendarlianto Fahadha, Rizqa Ula Fajarningrum, Nurmala Dyah Feri Raharjo Filio Itsar Ma’ruf Gito Sugiyanto Jalu Aji Prakoso Listyanda, R. Faiz Muhammad Isdy, Rizky Muhammad Taufiqurahman Nandang Riski Setiawan Nani dkk. Mulyaningsih Nur Hayati Nurhadi Nurhadi Nurul Hidayah Pebi Riyanto Raka Mahendra S Rany Puspita D Reyvan Alfian Nurkhamid Rizky, Muhammad Adrian Rony Irawan Silviana Silviana Solly Aryza Taufik, Ikhwan Widiatmoko, Julian Anindito