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All Journal Turbo : Jurnal Program Studi Teknik Mesin Jurnal Teknologi Terapan Journal of Engineering and Scientific Research (JESR) Infotekmesin Jurnal Pendidikan Teknik Mesin Undiksha Jurnal Pendidikan dan Teknologi Indonesia Jurnal Vokasi Mekanika AMMA : Jurnal Pengabdian Masyarakat Majalah Teknik Mesin Jurnal Pendidikan Teknik Mesin J-Proteksion : Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Journal of Industrial and Mechanical Engineering
Pujiyulianto, Eko
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Humanities Automotive Engineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing

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Journal : Infotekmesin

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Pengaruh Orientasi Sudut Terhadap Faktor Delaminasi dan Nilai Kekuatan Tarik Pada Proses Pengeboran Komposit Fiberglass woven bermatriks Poliester Paundra, Fajar; Pujiyulianto, Eko; Muhyi, Abdul; Sri Bagaskara, Firman; Manzeis, Ilhan; Ramadhan Siregar, Ilham; Elmiawan, Puguh
Infotekmesin Vol 15 No 2 (2024): Infotekmesin, Juli 2024
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v15i2.2216

Abstract

Composite is a material that is formed from a combination of 2 or more materials. The orientation of the inclination angle of the webbing on the composite affects the tensile strength value. This research was conducted to determine the effect of variations in the angle of inclination of the webbing and the phenomenon of delamination on the value of tensile strength. The process of making fiberglass woven fiber composites and a mixture of resin and catalyst uses the vacuum bagging method. The variations used in this study are the angle of inclination of the webbing 0°, 15°, 30° and 45°. Tensile test specimens using the ASTM D638 standard. The specimens that have been cut will then be perforated with a diameter of 4 mm using a milling machine. Tensile testing was carried out using a Universal Testing Machine. The highest tensile strength value is at an angle of 0° with a value of 189.30 MPa and the lowest tensile strength is at an angle of 45° with a value of 34.25 MPa and for the value of the delamination factor has little effect on the value of tensile strength.
Pengaruh Variasi Waktu Curing Pada Kegagalan Uji Bending Komposit Sandwich Serat Karbon Dengan Core PVC Foam Paundra, Fajar; Rivaldo Aritonang, Joy; Pujiyulianto, Eko; Abdul, Abdul; Elmiawan, Puguh
Infotekmesin Vol 16 No 2 (2025): Infotekmesin: Juli 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i2.2730

Abstract

Curing is a method used to enhance the performance of composite materials by heating them in an electric oven for a specific duration and at a controlled temperature. This study aims to examine the effect of curing time variations on the failure analysis of carbon fiber sandwich composites with a PVC foam core under bending tests. The materials used in this research include polyester resin, 240 gsm carbon twill fiber, and a 5 mm thick PVC foam core. The manufacturing method applied was vacuum bagging, followed by a curing process with time variations of 30 minutes, 60 minutes, 90 minutes, and 120 minutes at a constant holding temperature of 80°C. Bending tests were carried out according to ASTM C393 standards. The highest bending strength of the sandwich composite was achieved with a curing time of 120 minutes, reaching 45.55 MPa, while the lowest strength was observed in the specimen without curing, at 25.76 MPa. The failures observed after bending tests included core failures such as core crush, indentation, and delamination, as well as skin failures like micro buckling.
Co-Authors Abdul, Abdul Aditia Prahmana, Rico Aldyansyah, Dimas Arif, Muhamad F. Arirohman, Ilham Dwi Budi Darsono, Febri Dicky J. Silitonga Drajat, Bambang Elmiawan, Puguh Firdaus, M. Adrian Gahana Cindi Alfian, Devia galih, Rene hario Hadi Teguh Yudistira, Hadi Teguh Imam Prabowo, Imam Irza Sukmana, Irza Kardo Rajagukguk, Kardo Karmiati, Besse Titing Lathifa Putri Afisna Lulu Nurdini, Lulu Mahesa, Iqbal Manty Aldilani Ikaningsih Manzeis, Ilhan Maulana, Sena Muhamad Fatikul Arif Muhammad Syaukani Muhyi, A. Muhyi, Abdul muhyi, andul Munte, Daniel C. Nanda Syanur, Farid Nurullah, Fajar Perdana Oktavia, Amelia Paundra, F. Paundra, Fajar Perdana Nurullah, Fajar Permata, Ariyo Nurachman Satiya Prabowo, Andi Pratama, Angga Jihan Putra Andi Kolala Rakha Yudanta, Faturrizky Ramadhan Siregar, Ilham Ramadhanty, Nabila Rivaldo Aritonang, Joy Rizky Saputra, Rizky Rodian, Afiko Saefudin, Deny Bayu Setyawati, Annisa Indah Sidik, M Farhan Sidik, M. Farhan Sidik, Muhammad Farhan Sri Bagaskara, Firman Suharno Suharno Syah, Muhammad Aksel SYANUR, FARID NANDA Tabitha, Adinda Kanaya Wibawa, Gilang Putra Yasmin, Dzikrina Salsabila