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All Journal Rang Teknik Journal Jurnal Pengabdian Masyarakat Dharma Andalas Jurnal Polimesin Prosiding SNTTM

Islahuddin Islahuddin

Universitas Dharma Andalas

Author-ID : 4043236

Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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KAJIAN EKSPERIMENTAL PENGARUH THERMAL SHOCK TERHADAP KEKUATAN TARIK MATERIAL KOMPOSIT BERSERAT DAUN NANAS Islahuddin Islahuddin; Meiki Eru Putra; Sanny Ardhy; Rina Rina
Rang Teknik Journal Vol 3, No 1 (2020): Vol. 3 No. 1 Januari 2020
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Pengunaan material komposit berserat alam seperti serat daun nanas (pineapple leaf) memiliki potensi yang besar untuk dikembangkan di masa yang akan datang. Salah satu faktor pendukungnya adalah adanya ketersediaan bahan baku yang melimpah di Indonesia. Selain itu, material komposit yang dihasilkan juga memiliki sifat mekanik yang baik, sifat abrasif yang rendah dan ramah lingkungan. Pada penelitian ini material komposit dari serat daun nanas dibuat secara manual dengan variasi susunan dan orientasi serat, yaitu 1 lapis 45o, 1 lapis 90o, 2 lapis 45o, dan 2 lapis 90o. Untuk mengetahui sifat mekanik dari material ini terlebih dahulu dilakukan pengujian tarik. Standar dimensi dan prosedur pengujiannya akan mengacu pada ASTM D638. Pengujian tarik dilakukan dengan memvariasikan perlakuan thermal shock terhadap orientasi dan susunan yaitu 0 siklus, 5 siklus, 10 siklus, dan 15 siklus. Hasil dari penelitian ini diperoleh kekuatan tarik tertinggi pada susunan dan orientasi 2 lapis 90o tanpa perlakuan thermal shock, yaitu sebesar 14,16 MPa dan kekuatan tarik terendah pada susunan dan orientasi 2 lapis 45o 5 siklus thermal shock sebesar 5,71 MPa.

PEMBUATAN KAPAL NELAYAN FIBERGLASS KOTA PADANG DENGAN METODE HAND LAY UP Sanny Ardhy; Meiki Eru Eru Putra; Islahuddin Islahuddin Islahuddin
Rang Teknik Journal Vol 2, No 1 (2019): Vol. 2 No. 1 Januari 2019
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Kapal nelayan dari bahan kayu lambat laun sudah mulai ditinggalkan oleh nelayan. Kini, nelayan sudah banyak beralih menggunakan kapal dari material fiberglass. Ini dikarenakan jumlah bahan kayu yang sudah semakin terbatas, dan harganya juga sangat mahal. Selain itu, kapal kayu membutuhkan banyak sekali perawatan dan masa pakainya juga terbatas. Sementara kelebihan kapal fiberglass antara lain, usia atau masa pakai kapal lebih tahan lama, perawatan jauh lebih mudah dan hemat biaya (cost). Kapal fiber juga jauh lebih ringan, dan lebih maksimal dalam produksi tangkap ikan. Proses pembuatan kapal fiberglass yang banyak dibuat, menggunakan teknik Fiberglass Reinforced Plastic (FRP). Dalam pembuatan kapal fiber, ada dua metode laminasi yang sering digunakan, yakni Hand Lay Up dan Chopper Gun. Metode ini adalah metode laminasi yang paling mudah dan sederhana. Hand Lay Up adalah metode cetakan terbuka (open mould). Metode ini dilakukan dengan cara mengaplikasikan resin pada bahan penguat dengan menggunakan kuas/rol. Penelitian dilakukan di daerah nelayan Pantai Muaro Padang. Ada lima unit kapal nelayan fiberglass yang menjadi sampel. Tujuan penelitian ini untuk membantu nelayan, khususnya memproduksi kapal fiberglass yang jauh lebih baik untuk memaksimalkan hasil tangkapan ikan.Kata Kunci : FRP, hand lay up, resin, open mould, Pantai Muaro

Peningkatan Produktivitas Serbuk Jahe Instan Dengan Metode Mesin Parut Listrik Pada Kelompok Tani Kelurahan Bungus Barat Kota Padang Rosiana Rizal; Helmice Afriyeni; Islahuddin Islahuddin; Sefrianita Kamal; Sara Surya
Jurnal Pengabdian Masyarakat Dharma Andalas Vol 1 No 2 (2023): Jurnal Pengabdian Masyarakat Dharma Andalas
Publisher : LPPM Universitas Dharma Andalas

This Community Service activity aims to provide information about ginger plants that have the best quality that can be processed into instant ginger powder, a method that can increase the productivity of instant ginger powder. This community service activity in alam mintanak farmer group, West Bungus sub-district, Padang city was carried out in 3 stages for 1 month. From the beginning of March to the 2nd week of May 2022, the preparation stage which consisted of meetings with related parties, preparation of proposals, and surveys were carried out. The next stage is Implementation which is the main agenda, including counseling and how to choose quality ginger plants and how to process ginger into instant ginger powder. The last stage is reporting as outlined in the form of this Community Service Journal. From this service activity, it is hoped that the people of Bungus Barat sub-district, Padang city will receive education on processing ginger into instant ginger powder and how to increase productivity.

Investigation for adhesion enhancement of hydroxyapatite coatings on Ti-12Cr alloy using the dipcoating method for orthopedic implant Sanny Ardhy; Islahuddin Islahuddin; Meiki Eru Putra
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.v23i6.7642

Titanium and its alloys are extensively applied in biomedical due to their light weight, corrosion resistance, and biocompatibility. However, conventional alloys such as Ti-6Al-4V possess a high elastic modulus (~110 GPa), much greater than that of natural bone (10-30 GPa), leading to stress shielding and delayed bone healing. To overcome this limitation, Î²-type titanium alloys with lower modulus have been developed, including Ti-12Cr, which is intended for spinal fixation implants. Previous studies have reported frequent surface cracking in HA layers, potentially reducing implant durability. In this study, bio-HA derived from scales of ikan kakap putih (Lates calcarifer), an abundant fishery by-product, was applied as a coating suspension. The natural collagen present in the scales was expected to enhance coating adhesion. HA layers were deposited on Ti-12Cr substrates using dip coating with dipping times of 20, 24, 34, and 40 seconds. The results show that HA derived from scales of ikan kakap putih exhibits good coating adhesion strength. This improvement in adhesion helps minimize cracking in the HA layer. The highest adhesion was achieved at a dipping time of 20 s, with only 2% of the coated area peeling off. In addition, the dip-coating process produced thin and uniform HA layers, with surface coverage reaching 98.14% at a dipping time of 40 s. The improved adhesion of the HA coating is expected to enhance osseointegration and reduce implant inflammation effects in biomedical applications.

Effect of corrosion rate and hardness of titanium in Kokubo’s simulated body fluid for orthodontic applications Sanny Ardhy Sanny; Islahuddin Islahuddin; Meiki Eru Putra Meiki; Muhammad Riza Ardiyanto riza
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/38n0c342

Titanium and its alloys are widely recognized as preferred materials for dental implants, particularly in orthodontic applications, owing to their superior corrosion resistance and mechanical performance compared with stainless steel. However, certain limitations remain. In acidic environments, titanium’s corrosion resistance tends to decline. This issue is of particular relevance in West Sumatra, where local dietary habits include frequent consumption of acidic and high-fat foods such as rendang, gulai and various fried dishes. Hence, it is important to evaluate the corrosion behavior of titanium and its alloys under acidic conditions. In this study, four titanium-based materials were investigated: Ti-12 Cr, TNTZ-ST, Ti-64 ELI (Extra Low Interstitial), and Commercially Pure Titanium (CpTi). Immersion tests were performed in Kokubo’s Simulated Body Fluid (SBF) at pH 5.0 for four exposure periods (1, 2, 3, and 4 weeks). The corrosion rate was determined using the weight loss method. Results revealed that CpTi exhibited the highest corrosion rate (0.0985 mm/y) after 4 weeks, while Ti-12 Cr demonstrated the lowest (0.0515 mm/y). Regarding hardness, CpTi reached the highest value (365 HVN at 1 week), whereas Ti-12 Cr recorded the lowest (130 HVN).

Co-Authors Helmice Afriyeni Kamal, Sefrianita Meiki Eru Putra Meiki Eru Putra Meiki Muhammad Riza Ardiyanto riza Rina Rina Rosiana Rizal Sanny Ardhy Sanny Ardhy Sanny Sara Surya

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