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All Journal At-Tarbawi : Jurnal Pendidikan, Sosial dan Kebudayaan Jurnal Teknologi Kimia Unimal
Abubakar Abubakar
Jurusan Vokasi Teknik Mesin, Fakultas Teknik, Universitas Malikussaleh
Chemical Engineering, Chemistry & Bioengineering Education Engineering Environmental Science Industrial & Manufacturing Engineering Social Sciences Other

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PENGARUH FRAKSI VOLUME TERHADAP KEKUATAN BENDING PADA KOMPOSIT BERPENGUAT SERAT DAUN SISAL MENGGUNAKAN RESIN BQTN 157-EX Zulmiardi Zulmiardi; Abubakar Abubakar; Meriatna Meriatna; Yudistira Yudistira
Jurnal Teknologi Kimia Unimal Vol 11, No 1 (2022): Jurnal Teknologi Kimia Unimal - Mei 2022
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jtku.v11i1.7249

Abstract

Penelitian ini bertujuan untuk membuat prototipe komposit plastik berpenguat serat daun sisal, dengan variasi fraksi volume (Vf) 5%, 10%, 15% dengan perlakuan alkali sebesar 5% . Komposisi serat disusun didalam cetakan dengan arah memanjang (00) dengan orientasi laminat acak, menggunakan metode Vacuum Assisted Resin Infusion (VARI). Dari penggunaan metode ini dapat mengeluarkan udara yang terperangkap masuk pada spesimen komposit maka diharapkan nilai dari kekuatan uji bending menjadi lebih besar. Hasil dari proses pengujian bending diharapkan nilai kekuatan uji bending terbesar dengan fraksi volume 15% dengan nilai rata-rata yaitu 153,76 Newton, untuk pengujian bending terendah pada fraksi volume 5% dengan nilai rata-rata 78,45 Newton.. Bisa disimpulkan, untuk komposit berpenguat serat dari daun sisal menggunakanResin BQTN 157-EX mempunyai kemampuan yang cukup besar kalau diaplikasikan sebagai material struktural.
The Effect of Work Preparation Sheet Learning Media on Learning Outcomes of Turning Practice into Machining Practice in Vocational High Schools Siraj Siraj; Abubakar Dabet; Azhar Syahputra; Marwan Marwan; Fajriana Fajriana; Sayni Nasrah
At-Tarbawi : Jurnal Pendidikan, Sosial dan Kebudayaan Vol 9 No 1 (2022): At-Tarbawi: Jurnal Pendidikan, Sosial dan Kebudayaan
Publisher : Fakultas Tarbiyah dan Ilmu Keguruan IAIN Langsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32505/tarbawi.v9i1.4232

Abstract

This study aims to determine the learning outcomes of students' lathe practices who are taught by using work preparation sheets and not using the work preparation sheets in turning practice. It is also to find out the differences in the learning outcomes of students in both classes during machining practice-training courses at the eleventh grade of SMK Negeri 1 Bireuen. The research method used was a True Experimental Design research method in which the implementation used a Posttest-Only Control Design type that compares the experimental class with the control class. The population in this study was class XI TPM Mechanical Engineering at SMK Negeri 1 Bireuen which consisted of 2 classes with 58 students. Class XI TPM 1 was selected as the experimental class and class XI TPM 2 as the control class. The data collection was obtained from the results of the lathe practice. The results showed that the students of class XI TPM1 (experimental class) obtained an average value of turning the practice of 85.62. While the learning outcomes of class XI TPM2 students (control class) obtained an average value of 62.78 lathe practice. From these results, it can be concluded that learning outcomes using work preparation sheet learning during practice are better than those who do not use work preparation sheets during lathe practice.
Co-Authors Azhar Syahputra Fajriana, Fajriana Marwan Hamid Meriatna Meriatna Nasrah, Sayni Siraj Yudistira Yudistira Zulmiardi, Zulmiardi