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Analisis Dampak Penambahan Filler Abu Sekam Padi Pada Komposit Polipropilena Berpenguat Serat Rami Terhadap Ketangguhan Impak Michael Yossia Gultom; Sri Hastuti , S.T., M.T. IPP.; Faiz Listyanda; Xander Salahudin; Eko Saputra; Wahyu Isti Nugroho; Farika Tono Putri; Ragil Tri Indrawati
Journal of Industrial and Mechanical Engineering Vol 4 No 1 (2026): Journal of Industrial and Mechanical Engineering
Publisher : Department of Industrial Engineering, Universitas Jenderal Soedirman.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jimien.2026.4.1.19799

Abstract

Plastik telah berkembang menjadi material utama pengganti kayu, logam, dan bahan konvensional lainnya, termasuk pada industri otomotif, karena memiliki kekuatan yang cukup baik, organisme, ketahanan terhadap korosi dan bahan kimia, serta biaya produksi yang relatif ekonomis. Namun, peningkatan penggunaan berkontribusi terhadap akumulasi limbah plastik yang membahayakan lingkungan. Salah satu solusi yang dikaji adalah pengembangan komposit berbasis serat alam dengan penambahan filler abu sekam padi (ASP). Penelitian ini bertujuan menganalisis pengaruh variasi abu sekam padi (ASP) terhadap sifat mekanik komposit serat rami bermatriks polipropilena (PP) yang diproduksi menggunakan metode hot press . Pengujian dan analisis sifat mekanik dilakukan melalui uji impak ASTM D5942 dan analisis foto makro permukaan patahan. Hasil menunjukkan komposisi optimum pada 5% ASP, 85% PP, dan 10% serat rami dengan energi serap 0,79 J dan ketangguhan 0,024 J/mm². Pengamatan makro menampilkan mekanisme dominasi fiber pull-out dan adanya beberapa void , yang menunjukkan penyerapan energi melalui pelepasan serat dan menginfeksi antarmuka sehingga retakan tidak berkembang secara signifikan.
Sikahyflex-Epoxy Mixed Adhesive’s Effect on the Aluminum-Composite Joint’s Shear Tensile Strength for the Automotive Industry Sri Hastuti; Paryanto Paryanto; Gito Sugiyanto; Xander Salahudin; Ridwan Afandi; Fadlan Azhari
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 9, No 1 (2024): EDISI MARET 2024
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v9i1.5435

Abstract

The automotive industry sector encounters challenges in the construction of connections between different materials. Hence, a breakthrough is needed in the automotive industry in manufacturing connections between different wall panel materials. Mixed adhesive materials for different materials are required and represent an innovation in the manufacturing process for joints of different materials due to the need for stiff and slightly ductile adhesives. This research aims to analyze the effect of using a sikahyflex-epoxy mixture adhesive in aluminum-composite joints on the shear tensile strength of the joints for the automotive industry. This research serves as an innovation in dissimilar material connection systems by developing the use of mixed adhesives and cocofiber aluminum-composite adherend materials with environmentally friendly and corrosion-resistant properties. The research material used aluminum 5083-cocofiber composite. The adherend surface was roughened employing sandpaper of #60, #80, and #150. The adhesive used the addition of sikahyflex adhesive to the epoxy adhesive with additional variations of 10%, 20%, 30%, and 40% sikahyflex. Connections between different materials with the single lap joint type refer to ASTM D1002. The roughness test results yielded the best roughness grade #150 on the surface of the aluminum adherend and coco fiber composite. The shear tensile test results by adding 40% sikahyflex adhesive, 0.4 mm adhesive thickness, and #150 sandpapering resulted in a 20% increase in shear tensile strength in the single lap joint of 2.51 N/mm2. The surface roughness enhanced the adhesive bond strength between mechanical interlocking adhesives and adherend. Meanwhile, the failure modes observed in macro observations included thin-layer cohesive failure, cohesive failure, two-stage failure, and stock-break failure modes. The SEM observation revealed that in the initial propagation of microcracking and voids, which mark the initial onset of adhesive failure, tearing took place, leading to a failure mode in the aluminum-composite coco fiber single overlap joint.
Co-Authors Abdul Rahman Wahid Aris Priyatmoko Aris Priyatmoko Aris Priyatmoko Azam Akmal Nur Irsan Azhari, Fadhlan Azhari, Fadlan Aziz , Syahrul Fatchul Bagas Dwi Prakoso Bagus Saputra Bintoro, Sefrian Rizki Catur Pramono Crodita Bangkit Wiranegara Danang Henri Wibowo Danang Henri Wibowo Dullah, Muhammad Firdaus Ubai Edi Handoyo Edi Waluyo Eko Saputra Eko Saputra El Vionna Laellyn Nurul Fatich El Vionna Laellyn Nurul Fatich Endang Mawarsih Erics Kharisma Danang Perdana Fadlan Azhari Faiz Listyanda Farika Tono Putri Fathoni, Achmad Luthfian Fuad Hilmy Gilang Fitra Sanubari Gito Sugiyanto Hasugian, Panca Putra Hendri Setiawan Hidayat, Ilyas Ibnu Suseno Ida Ayu Putu Sri Widnyani Ihsan Hadi Nugroho Ikhsan, Ivan Hardi Nurul Indrawati, Ragil Tri Isro Nurul Hadi Kun Suharno Kun Suharno Laksono Trisnantoro M Rozak Ardiyanto M. Yogi Riyantama Isjoni Mahdi, Jausyan Al Margi Luhur, Galih Maulana Michael Yossia Gultom Miftahkul Khoir Miftahkul Khoir Moh. Ibah Alfauzi Muhamad Agung Prasetyo Muhammad Cahya Wicaksana Muhammad Hasan Zuhdi Nani dkk. Mulyaningsih Naufal Widiyatama Aslam Nurdin, Akhmad Paryanto Paryanto Pratama, Hidayat Putri, Ericha Dwi Wahyu Syah Putri, Farika Tono Rachman Satya Pamungkas Rachman Satya Pamungkas Ragil Tri Indrawati Rahayu, Yunita Raka Mahendra Sulistiyo Ranny Puspita Dewi Ridwan Afandi Ridwan Afandi Rizki Dwi Ardika Ryantika Dyah Safitri Salim, Muhammad Faiz Samodro, Tegar Sri Hastuti Sri Hastuti Sri Hastuti , S.T., M.T. IPP. Sri Widodo Sri Widodo Sri Widodo Sri Widodo Sri Widodo Sri Widodo Sulistyo, Raka Mahendra Taufik, Ikhwan Tegar Adi Prabowo Tegar Armanto Trisma Jaya Saputra Wahyu Isti Nugroho Yudhistira, Dida Ardito Yusril Ihza Yusuf Satrio Wibowo Zainab Luxfi’i