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All Journal JAMBURA Journal of Architecture PENGABDI: Jurnal Hasil Pengabdian Masyarakat Jurnal Dedikasi Jurnal Mesin Nusantara ADMA: Jurnal Pengabdian dan Pemberdayaan Masyarakat GEARBOX Jurnal Pendidikan Teknik Mesin Indonesian Community Journal Abdimas : Jurnal Pengabdian Kepada Masyarakat
Zuldesmi
Universitas Negeri Manado
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Social Sciences Transportation Other

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Pengaruh Panjang Serat Terhadap Kekuatan Impak Material Komposit Berpenguat Serat Lidah Mertua  (Sansevieria Clyndirica) Untuk Aplikasi Spakbor Sepeda Motor Sinaga, Amos; Rampo, Yohanis; mansjur, zuldesmi
Jurnal Mesin Nusantara Vol 8 No 2 (2025): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v8i2.27563

Abstract

The use of composite materials made from natural fibers is increasingly popular as an alternative to synthetic fibers that are not environmentally friendly. One type of natural fiber with great potential is snake plant fiber (Sansevieria cylindrica), which has superior mechanical characteristics and can act as a reinforcement in composites. This study aims to evaluate the impact of variations in snake plant fiber length on the impact strength of composites planned to be used as a replacement material for automatic motorcycle front fenders. The composite was made with a volume ratio of 30% fiber and 70% polyester resin, with fiber length variations of 30 mm, 50 mm, and 70 mm. Impact tests were conducted using the ASTM E23 Charpy method, and microstructural analysis was performed to understand the failure mechanism. The research findings showed that composites with 30 mm fibers provided the best impact performance with an impact energy reaching 4.22 Joules and an impact value of 0.0531 J/mm². Increasing the fiber length to 50 mm and 70 mm actually decreased the impact resistance, up to 2.84 Joules and 1.53 Joules, respectively. Compared to conventional fender material, the snake plant fiber composite exhibits significantly higher impact values. The microstructure exhibits a more uniform fiber distribution at a length of 30 mm, while longer fibers tend to cause defects such as debonding, fiber pullout, and voids. Therefore, a fiber length of 30 mm is considered optimal.
Pemberdayaan Kelompok Tani melalui Teknologi Tepat Guna Mesin Panjat sebagai Solusi Berkelanjutan Panen Kelapa di Desa Lopana Yusupa, Ade; Zuldesmi, Zuldesmi; Trang, Irvan; Suharto, Muhammad Fachruddin
ADMA : Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol. 6 No. 2 (2025): ADMA: Jurnal Pengabdian dan Pemberdayaan Mayarakat: In-Progress
Publisher : LPPM Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/adma.v6i2.5681

Abstract

Panen kelapa manual di Sulawesi Utara yang berisiko tinggi dan memakan waktu lama menyebabkan rendahnya produktivitas serta pendapatan petani. Program pengabdian ini bertujuan meningkatkan efisiensi, keselamatan kerja, dan akses pasar melalui penerapan teknologi mesin panjat, SOP K3, serta pemasaran digital. Metode pelaksanaan menggunakan community development partisipatif dengan desain single-group pre–post pada Kelompok Tani “TUIS”. Hasil evaluasi menunjukkan peningkatan signifikan pada pengetahuan dan keterampilan mitra. Program ini berhasil mereduksi waktu panen hingga 60%, menurunkan risiko kecelakaan, dan memperluas jangkauan pasar. Intervensi ini terbukti meningkatkan daya saing dan kemandirian usaha tani secara berkelanjutan.
Co-Authors Ade Yusupa Aditya Sulila Azizul, Muh Charles, Jemmy Davidsen Oktafianus Mapaliey Denny Maukar Franco Manarisip Guna, Putu L. A. Hendrik J.R. Sumarauw Hendro Maxwell Sumual Irvan Trang Jemmy Charles Kewas Jenly D.I. Manongko Julianto Kilateng Julianto Kilateng Kawatu, Freike E. Liharman Pintubatu Manahampi, Faldo Minggu, Youndi Pratama Moh. Fachruddin Suharto Muhammad Fachruddin Suharto Muhammmad Muhdi Attaufiq Nehem, Tuwindo Jorg Pakanna, Adi Aprians Pintubatu, Liharman Pomalingo, Moh Fikri Pratama, Rafly Isnu Putu L. A. Guna Rahmat Adisucipto Mamuka Randalongi, Jemmy Purwanto Ratag, Lenie Robert Munaiseche Robert Richard Winerungan Sinaga, Amos Suharto, Moh. Fachruddin Suharto, Muhammad Fachruddin Sulila, Aditya Tuwindo Jorg Nehem Yohanis Rampo Youndi Pratama Minggu