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All Journal IAES International Journal of Artificial Intelligence (IJ-AI) Rekayasa Mesin JURNAL PASTI (PENELITIAN DAN APLIKASI SISTEM DAN TEKNIK INDUSTRI) Sinergi VANOS Journal of Mechanical Engineering Education Jurnal Teknik Mesin Dinamisia: Jurnal Pengabdian Kepada Masyarakat Jurnal Abdi Masyarakat (JAM) Indonesian Journal for Social Responsibility International Journal of Advanced Technology in Mechanical, Mechatronics and Material (IJATEC) International Journal of Community Service Jurnal Abdimas ADPI Sains dan Teknologi Jurnal Rekayasa Energi dan Mekanika International Journal of Innovation in Mechanical Engineering and Advanced Materials Innovative: Journal Of Social Science Research AME (Aplikasi Mekanika dan Energi) : Jurnal Ilmiah Teknik Mesin Jurnal Polimesin
Dafit Feriyanto
Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Mercu Buana, Jakarta, Indonesia
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering 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 Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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Journal : Jurnal Polimesin

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Innovative catalytic converter from FeCrAl material coated by γ-Al2O3 and NiCr for increasing thermal stability at high temperature operation Dafit Feriyanto; Zaenudin Zaenudin
Jurnal Polimesin Vol 21, No 6 (2023): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i6.4268

Abstract

The transportation sector plays a significant role in air pollution and the greenhouse gas effect. Therefore, the innovation of exhaust system component needs to be conducted to reduce those issues. The most effective technology is by using a catalytic converter have main function is to convert the exhaust emission. The main problemfaced by the previous study is the high degradation of FeCrAl material up to 19.58 mg at 1000oC. Therefore, the objective of this study is to develop a catalytic converter that has high thermal stability. This research was conducted by various coating processes which is Ultrasonic Bath (UB) and ultrasonic bath combined with electroplating (UB+EL) with parameters of UB consisting of frequency of 35 kHz, various holding times of 1, 1.5, 2, 2.5 and 3 hours while parameters in electroplating process are current density of 8 A/dm2 and holding time of 15, 30, 45, 60 and 75 minutes. That process was followed by a drying process at 60oC for 12 hours. The materials used in this research are FeCrAl as substrate, Ni as catalyst, γ-Al2O3 and Cr as wash-coat material. The results show that coating process coating process of γ-Al2O3 and NiCr on FeCrAl substrate succeeded in analysis proved by microstructure and composition analysis. The appropriate coating is shown by UB+EL 30 minute with the highest thermal stability of 2.85mg and reaction point is 0.07 mg/minute. Several compounds developed during the coating process such as in UB process develop FeCrAl, FeO, γ-Al2O3 and FeCr2O3 compounds and in the UB+EL process FeCrAl, FeO, γ-Al2O3, FeCr2O3, NiO, NaO2, NiAl2O4 and NiCr2O4 compounds. Therefore, UB+EL 30 minutes is the most parameters that are recommended to be applied due to the lowest mass degradation and more compounds.The transportation sector plays a significant role in air pollution and the greenhouse gas effect. Therefore, the innovation of exhaust system component needs to be conducted to reduce those issues. The most effective technology is by using a catalytic converter have main function is to convert the exhaust emission. The main problemfaced by the previous study is the high degradation of FeCrAl material up to 19.58 mg at 1000oC. Therefore, the objective of this study is to develop a catalytic converter that has high thermal stability. This research was conducted by various coating processes which is Ultrasonic Bath (UB) and ultrasonic bath combined with electroplating (UB+EL) with parameters of UB consisting of frequency of 35 kHz, various holding times of 1, 1.5, 2, 2.5 and 3 hours while parameters in electroplating process are current density of 8 A/dm2 and holding time of 15, 30, 45, 60 and 75 minutes. That process was followed by a drying process at 60oC for 12 hours. The materials used in this research are FeCrAl as substrate, Ni as catalyst, γ-Al2O3 and Cr as wash-coat material. The results show that coating process coating process of γ-Al2O3 and NiCr on FeCrAl substrate succeeded in analysis proved by microstructure and composition analysis. The appropriate coating is shown by UB+EL 30 minute with the highest thermal stability of 2.85mg and reaction point is 0.07 mg/minute. Several compounds developed during the coating process such as in UB process develop FeCrAl, FeO, γ-Al2O3 and FeCr2O3 compounds and in the UB+EL process FeCrAl, FeO, γ-Al2O3, FeCr2O3, NiO, NaO2, NiAl2O4 and NiCr2O4 compounds. Therefore, UB+EL 30 minutes is the most parameters that are recommended to be applied due to the lowest mass degradation and more compounds.
Influence of bonding compression and air gap on the acoustic absorption of spunbond–resinated felt composites Basri, Hasan; Feriyanto, Dafit
Jurnal Polimesin Vol 23, No 6 (2025): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i6.7954

Abstract

Spunbond-resinated felt is a common composite material used for automotive purposes. Reducing vehicle noise requires lightweight, cost-effective sound-absorbing materials. This study focuses on researching more lightweight and low-cost materials through examining how bonding compression and an air gap affect the acoustic absorption of Spunbond–Resinated felt composites with varying grammage (800–1400 g/m²) and thickness (15–22 mm). The novelty of this research is in the use of lower grammage and the existence of an air gap compared with the existing product and previous study. Acoustic absorption tests were conducted using an impedance tube with air-gap depths of 0, 10, and 15 mm behind the samples. Additional tests were conducted on compressed samples, 50% of the original thickness, to observe the effect of increased density. Results show that felt with 1200 g/m² provides the best overall absorption. Thickness compression reduces absorption by approximately 13–23%, whereas the introduction of an air gap significantly enhances absorption, particularly for lower-grammage materials. Notably, an 800 g/m² felt combined with a 15 mm air gap outperformed a 1400 g/m² felt without an air gap. These findings demonstrate that appropriate grammage and air gap design can enhance sound absorption, enabling lighter materials such as 800–1000 g/m² felt to meet noise-reduction requirements.
Co-Authors A. M. Leman A.N. Aizat Ahmad A.N. Aizat Ahmad, A.N. Aizat Abda Abda Abdi Wahab Abdi Wahab Abdi Wahab Abdul Mutalib Leman Abdulmalik, Samir Sani Abdulmalik, SS. Adinarto, Tri Wahyu Agung Wahyudi Biantoro Albert Phak Jie Wong Andi Adriansyah Andi Adriansyah Andi Adriansyah Andi Adriansyah Andi Firdaus Sudarma Anggara, Fajar Annisa Hakim Zamzami Asep Setia Kristanto Ayu Arwati, I G. Chollacoop, Nuwong Darwin Sebayang Dedik Romahadi Deni Shidqi Khaerudini Dewi Kusuma Arti Dian Primanita Oktasari Dwilestari, Charisma Elly Yuliawati Erna Setiany Feleke, Aberham Genetu Firmansyah, Mohamad Ardy Fitri , Muhammad Fransisca Listyaningsih Utami Gerald Ensang Timuda Ginting, Dianta Hadi Pranoto Hadi Pranoto Hadi Pranoto Hadi Pranoto Hadi Pranoto Hadi Pranoto Hadi Pranoto Hadi Pranoto Hafidz IH, Muhammad Hari Setiyawati Hasan Basri Himma Firdaus Imam Hidayat Indradewa, Rhian istiqomah istiqomah Julpri Andika Kurniawan Kurniawan Leman, Abdul Mutalib Listyaningsih, Fransiska M. Azizi Mohamad Abror Muhamad Fitri Muhammad Imran Nanang Ruhyat Nono Darsono, Nono Noviyanto, Alvian Nur, Hery Nurato , Nurato Nurato Nurato Nurato Nurato, Nurato NURUL HIDAYAH Octaviani, Ana Nur Pradipta, Nanang K. Pratiwi, Riri R Dwi Pudji Susilo Rachmanu, Fatkur Radityan, Fatwa Tresna Raflan Rahayu, Muthia Rajendra, Fajar Cahyadi Ramadhan, Kurnia Resista Vikaliana Rizki Briandana Romahadi, Dedik S.S. Abdulmalik S.S. Abdulmalik Sagir Alva Siang, Alan Ooi Lim Sidik, Muhamad Afifi Muhamad Sulaiman Hj. Hasan Sulaiman Hj. Hasan, Sulaiman Hj. Supaat Zakaria Supaat Zakaria Supaat Zakaria Supaat Zakaria Supaat Zakaria Wang Dong Wijaya, Fathoni Putra Yananto Mihadi Putra Zaenudin Zaenudin Zakaria, Supaat Zakaria, Supaat