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All Journal Jurnal Teknik Mesin Dulang: Jurnal Pengabdian Kepada Masyarakat
Fajri Arsyah, Ahmad Hasnul
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Automotive Engineering Computer Science & IT Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Analisis Efektivitas Thermal Insulation pada Sekat Ruang (Bulkhead) Bus untuk Mengurangi Panas Mesin Hidayat, Muhamad Fikri; Muchlisinalahuddin, Muchlisinalahuddin; Aprilman, Devia; Adriansyah, Adriansyah; Fajri Arsyah, Ahmad Hasnul; Kamil, Muhammad Aslam
Jurnal Teknik Mesin Vol 18 No 1 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.1.1853

Abstract

This study aims to evaluate the effectiveness of two types of thermal insulation materials, namely polyurethane (PU) foam and basaltwool, in reducing heat transfer from the engine compartment to the passenger cabin through the bus bulkhead structure. Optimal thermal insulation is essential to maintain cabin thermal comfort and enhance safety within the vehicle interior. The testing methods included measurements of thermal conductivity and evaluations of each material’s resistance to extreme temperatures. The results indicate that PU foam exhibits lower thermal conductivity (±0.020–0.028 W/m·K) and achieves heat retention efficiency of 95–98% at temperatures around 100°C. On the other hand, basaltwool shows slightly higher thermal conductivity (±0.035–0.040 W/m·K) with efficiency ranging from 90–95%, but significantly outperforms in terms of heat resistance, withstanding temperatures as high as 600–1000°C. Based on these findings, PU foam is considered more suitable for applications that require thermal efficiency at moderate temperatures, while basaltwool is better suited for environments exposed to continuous high temperatures. Therefore, the appropriate selection of insulation material should be based on specific operational conditions to optimize both thermal comfort and cabin safety.
PELATIHAN 3D PRINTING UNTUK JURUSAN KENDARAAN RINGAN SMK DHUAFA PADANG Sumiati, Ruzita; Nofriadi, Nofriadi; Fajri Arsyah, Ahmad Hasnul; Nusyirwan, Nusyirwan; Adriansyah, Adriansyah; Leni, Desmarita; Nasirwan, Nasirwan
Jurnal Pengabdian Masyarakat Polmanbabel Vol. 5 No. 02 (2025): DULANG : Jurnal Pengabdian Kepada Masyarakat
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/dulang.v5i02.412

Abstract

3D Printing training has been implemented as part of efforts to develop technical competence in vocational education, especially for students of the Light Vehicle Department at SMK Dhuafa Padang. This study aims to assess the effectiveness of 3D Printing training in improving students' skills in the application of additive manufacturing technology in the automotive sector. The training methods applied include the delivery of theoretical materials, technical demonstrations, and exercises. Evaluation of the effectiveness of the training was conducted through comparative analysis of pre-test and post-test results, which aims to measure the improvement of participants' competence before and after attending the training. The results of data analysis showed a significant increase in students' mastery of concepts and technical skills, especially in the use of 3D printing technology for component manufacturing. This training is expected to be a relevant and adaptive learning model, in order to prepare SMK graduates to face the dynamics of the automotive industry which is increasingly based on technology and innovation
Co-Authors Adriansyah Adriansyah Aprilman, Devia Hidayat, Muhamad Fikri Kamil, Muhammad Aslam Muchlisinalahuddin Nasirwan Nasirwan Nofriadi Nofriadi Nusyirwan Nusyirwan Ruzita Sumiati