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All Journal Rotasi Rekayasa Mesin Semesta Teknika Media Mesin: Majalah Teknik Mesin JMPM (Jurnal Material dan Proses Manufaktur) Turbo : Jurnal Program Studi Teknik Mesin INDONESIAN JOURNAL OF APPLIED PHYSICS BERDIKARI : Jurnal Inovasi dan Penerapan Ipteks JMM (Jurnal Masyarakat Mandiri) Journal of Engineering, Technology, and Applied Science (JETAS) Prosiding Seminar Nasional Program Pengabdian Masyarakat Jurnal Polimesin
Budiyantoro, Cahyo
Universitas Muhammadiyah Yogyakarta
Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

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The Influence of Fiber Treatment and Matrix Type on the Impregnation Quality of Carbon Fiber Reinforced Thermoplastics Budiyantoro, Cahyo; Sosiati, Harini; Syahputra, Kevin Atila; Sudarisman, Sudarisman
Semesta Teknika Vol 26, No 1 (2023): MEI
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/st.v26i1.18597

Abstract

One of the main issues with Carbon Fiber Reinforced Thermoplastics (CFRTP) is the poor impregnation quality of the matrix on carbon fiber due to the high viscosity of the thermoplastic. Impregnation quality can significantly affect the mechanical properties of the composite. This study aims to compare the impregnation abilities of various types of thermoplastic matrices on carbon fiber. The matrices used in this study are HDPE, PC, and PET. Three variations of carbon fiber treatment were employed: the first variation involved immersion in liquid nitrogen at -196°C, the second variation included heating in an electric furnace at 600°C followed by rapid cooling in liquid nitrogen, and the third variation utilized treatment with a silane coupling agent. The research findings demonstrate that composites comprising a Polycarbonate matrix and carbon fiber reinforcement, treated with a silane coupling agent, exhibit superior impregnation quality, as evidenced by an Interfacial Shear Strength (IFSS) value of 9.34 MPa.. The lowest impregnation quality was observed in HDPE reinforced with carbon fiber that had been heated and rapidly cooled, with an IFSS of 5.52 MPa.
Effect of CaCO3 Particles Size and Content on Impact Strenght of Kenaf/CaCO3/Epoxy Resin Hybrid Composites Harini Sosiati; Cahyo Trisedyo Utomo; Iwan Setiono; Cahyo Budiyantoro
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 10, No 01 (2020): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (623.67 KB) | DOI: 10.13057/ijap.v10i01.37748

Abstract

Thermoplastic and thermoset polymer composites reinforced with kenaf fiber or CaCO3 have been extensively investigated. However, the study on the combination of kenaf fiber and CaCO3 reinforced epoxy resin is rare. This research discussed the effect of CaCO3 particle size and the ratio of kenaf to CaCO3 content on the impact strength of alkali-treated kenaf/ CaCO3/epoxy resin hybrid composites. Thirty % of the hybrid kenaf fibers and CaCO3 particles reinforced epoxy resin composites were fabricated by hand lay-up technique followed by cold press. Impact test of the composite specimens was conducted using a Charpy Impact test according to ASTM D 6110. The morphology of impact fracture surface was examined by scanning electron microscopy (SEM). The results showed that the impact strength of the hybrid composite increased with the decrease of CaCO3 particle size, and increasing the ratio of kenaf to CaCO3. Interfacial bonding between the reinforcement (kenaf and CaCO3) and epoxy resin matrix, the uniform dispersion of kenaf and CaCO3 within the epoxy resin matrix are two crucial factors influencing the impact strength of the composite.
PENGARUH SUHU LELEH MATRIK DAN PERLAKUAN CRYOGENIC SERAT KARBON TERHADAP INTERFACIAL SHEAR STRENGTH CARBON FIBER REINFORCED POLYPROPYLENE Budiyantoro, Cahyo; Attoriq, Fajri; Sosiati, Harini
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1259

Abstract

Sifat mekanik komposit termoplastik berpenguat serat karbon dipengaruhi kinerja ikatan antarmuka antara serat dengan matrik. Dalam penelitian ini parameter proses  berupa suhu pencairan matrik dan perlakuan kriogenik serat karbon telah dioptimasikan dalam pembuatan filamen komposit untuk meningkatkan interfacial shear strength (IFSS). Filamen komposit polipropilena yang diperkuat serat karbon dibuat dengan menggunakan mesin ekstrusi-pultrusion. Temperatur peleburan divariasikan pada 180 oC, 190 oC, dan 200 oC. Serat karbon terlebih dahulu direndam dalam nitrogen cair dengan variasi waktu 10, 15, dan 20 menit untuk meningkatkan kekasaran permukaan serat. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh temperatur leleh dan perlakuan kriogenik serat karbon terhadap IFSS filamen komposit. Nilai IFSS diukur menggunakan uji pull-out, sedangkan morfologi permukaannya diamati menggunakan Scanning Electron Microscope. Hasil penelitian menunjukkan bahwa perlakuan serat dengan nitrogen cair memberikan pengaruh lebih dominan dalam peningkatan IFSS. Perlakuan serat secara kriogenik selama 20 menit direkomendasikan karena memberikan kekasaran permukaan tertinggi. Kombinasi parameter proses yang memberikan IFSS tertinggi adalah dengan perendaman serat karbon selama 20 menit dan aplikasi suhu pencairan matrik sebesar 190 oC.
The Impact of Ultraviolet Radiation on the Mechanical and Physical Properties of Wood Plastic Composite Using Waste Polypropylene Matrix Budiyantoro, Cahyo; Fawwas Ghazy, Muhammad Ikbar; Bilyferdin, Bastian
Journal of Engineering, Technology, and Applied Science (JETAS) Vol 7 No 1: April 2025
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.jetas-0701.827

Abstract

Indonesia has an abundance of wood sawdust waste and polypropylene (PP) plastic waste, which remain underutilized. This study aims to investigate the effects of ultraviolet (UV) radiation on the mechanical and physical properties of wood plastic composite (WPC) made from recycled polypropylene. WPC specimens were fabricated using injection molding with 40-mesh pine and teak wood particles at 10% weight fraction. The samples were exposed to UV radiation for 0, 240, and 750 hours, respectively. Mechanical properties were assessed through impact toughness using the Izod test, while physical properties were evaluated based on density and thickness swelling. The results indicated that prolonged UV exposure significantly reduced the impact strength and density of WPC while increasing its thickness swelling. Notably, teak-based WPC exhibited greater resistance to UV degradation compared to pine-based WPC. These findings highlight the importance of UV stability in WPC applications for outdoor environments and suggest potential improvements through material modifications or protective coatings.
PENGARUH SUHU LELEH MATRIK DAN PERLAKUAN CRYOGENIC SERAT KARBON TERHADAP INTERFACIAL SHEAR STRENGTH CARBON FIBER REINFORCED POLYPROPYLENE Budiyantoro, Cahyo; Attoriq, Fajri; Sosiati, Harini
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1259

Abstract

Sifat mekanik komposit termoplastik berpenguat serat karbon dipengaruhi kinerja ikatan antarmuka antara serat dengan matrik. Dalam penelitian ini parameter proses  berupa suhu pencairan matrik dan perlakuan kriogenik serat karbon telah dioptimasikan dalam pembuatan filamen komposit untuk meningkatkan interfacial shear strength (IFSS). Filamen komposit polipropilena yang diperkuat serat karbon dibuat dengan menggunakan mesin ekstrusi-pultrusion. Temperatur peleburan divariasikan pada 180 oC, 190 oC, dan 200 oC. Serat karbon terlebih dahulu direndam dalam nitrogen cair dengan variasi waktu 10, 15, dan 20 menit untuk meningkatkan kekasaran permukaan serat. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh temperatur leleh dan perlakuan kriogenik serat karbon terhadap IFSS filamen komposit. Nilai IFSS diukur menggunakan uji pull-out, sedangkan morfologi permukaannya diamati menggunakan Scanning Electron Microscope. Hasil penelitian menunjukkan bahwa perlakuan serat dengan nitrogen cair memberikan pengaruh lebih dominan dalam peningkatan IFSS. Perlakuan serat secara kriogenik selama 20 menit direkomendasikan karena memberikan kekasaran permukaan tertinggi. Kombinasi parameter proses yang memberikan IFSS tertinggi adalah dengan perendaman serat karbon selama 20 menit dan aplikasi suhu pencairan matrik sebesar 190 oC.
MOLD DESIGN AND FLOW ANALYSIS FOR PRODUCT PROPELLER APC SF 11X4.7 WITH MINIMUM SHRINKAGE AND WARPAGE Sahputra, Wahyu Puji; Budiyantoro, Cahyo; Nugroho, Gesang; Adam, Muhammad Kevin
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1669

Abstract

Making molds in the injection molding manufacturing process is one of the basic steps that functions to prevent product defects during the production process. The product defects that most often occur in this manufacturing process include shrinkage and warpage defects. This research will discuss the mold design for the APC SF 11x4.7 propeller product with a twist variation of 45o and minimum shrinkage and warpage values. Glass Fiber Reinforced Polypropylene (GFRPP) will be used as the propeller product material. The entire design process to testing will be carried out using software assistance. The Taguchi method with an L9 orthogonal array matrix (34) was used in this research. where L9 explains that the experiment will be carried out nine times, and 34 means there are three levels and four main factors. The four main factors consist of packing pressure, packing time, melting temperature and injection pressure. The Taguchi method is used with the aim of making it easier to find the variation value that produces the lowest shrinkage and warping defects in the product. The simulation results show that the variation with the smallest shrinkage value produces a value of 7.9% and the variation with the smallest warpage value produces a value of 1.051 mm
Enhancing mechanical properties of waste expanded polystyrene composites through varied coupling agents and wood powder formulations Budiyantoro, Cahyo; Yudhanto, Ferriawan
Jurnal Polimesin Vol 21, No 6 (2023): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i6.4234

Abstract

This study investigates Wood Plastic Composites (WPCs) by incorporating waste Expanded Polystyrene (EPS) and various wood powder reinforcements. The mechanical properties of WPCs play a pivotal role in sustainable material development. Our research delves into the effects of different treatments on wood powders and their interactions with the polymer matrix.Pine, teak, and silk tree wood powders underwent alkali immersion and coupling agent treatments. The ensuing composites underwent rigorous testing, including flexural strength, hardness, and impact resistance assessments.The findings underline the complex factors governing WPC mechanical properties. Pine-based WPCs, reinforced with pine wood powder and subjected to alkali treatment, exhibited the highest flexural strength at 29.56 MPa, whereas the lowest flexural strength of 14.65 MPa was observed in WPCs reinforced with alkali-treated teak wood powder. The highest impact strength quantified at 2.54 kJ/cm², was found in untreated pine wood powder-based WPC. In contrast, the lowest impact strength was identified in teak wood powder-based WPC treated with alkali.
Co-Authors Adam, Muhammad Kevin Adhi Setya Hutama Adi Nugroho Agustina, Nurhaliza Ali Khaerul Mufid Anggariawan, Arista Anggariawan, Arista Anwar, M. Choirul Aris Widyo Nugroho As’ari, Muhammad Agung Atikasari, Tiara Cahya Attoriq, Fajri Bayu Prabandono Bilyferdin, Bastian Cahyo Trisedyo Utomo Chusnul Azhar Dede Tohidin Diki Irwansyah Dwi Saputra, Muhammad Rifai Dwi Saputra, Muhammad Rifai Eduar Iqbal Riza Fawwas Ghazy, Muhammad Ikbar Ferriawan Yudhanto, Ferriawan Fitri Wahyuni Fitri Wahyuni Fitroh Anugrah Kusuma Yudha Gesang Nugroho Ghanim Raihan Ghozali, Mohamad Yuzdhie Ghozali Ghozali, Mohamad Yuzdhie Ghozali Harahap, Yudani Alamsyah Herda Agus Pamasaria Hidayat, Muhammad Firdaus Ikhsan, Subkhan Nur Irawan, Fabio Dwi Bagus Irawan, Fabio Dwi Bagus Irmawan, wiwin Irwansyah, Diki Iwan Setiono J. Wawan Joharwan khadliq, muhammad M. Choirul Anwar M. Puji Ibnu Mimbar Maulana Maemunah Maemunah Maulana, M. Puji Ibnu Mimbar Mufid, Ali Khaerul Muhammad Agung As’ari Muhammad Budi Nur Rahman Muhammad Budi Nur Rahman Muhammad Budi Nur Rahman, Muhammad Budi muhammad khadliq Ni'am, Lutfi Khoirul Miftakhul Nurhadi, Taufik Nurhaliza Agustina Pamasaria, Herda Agus Permana, Cepi Rahmatullah Permana, Cepi Rahmatullah Perwita Kurniawan Pradana, Benanta Ogi Rahman, Muhammad Budi Nur Raihan, Ghanim Riza, Eduar Iqbal Sahputra, Wahyu Puji Sosiati, Harini Subkhan Nur Ikhsan Sukamta Sukamta Sukamta Sukamta Sunardi Sunardi Sunardi, Sunardi Syahputra, Kevin Atila Taufik Nurhadi TH Adi Nugroho Thoharudin Thoharudin Thoharudin, Thoharudin Tiara Cahya Atikasari Totok Suwanda Tri Hannanto Saputra Tri Wahyono Widyasmoro, Widyasmoro wiwin Irmawan Yudani Alamsyah Harahap