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Journal : Journal of Metallurgical Engineering and Processing Technology

 1 
PENGARUH WAKTU PERENDAMAN LARUTAN NaOH 30% TERHADAP KEKUATAN MEKANIK KOMPOSIT SERAT PANDAN Graha Hardi Firmanda; Sehono Sehono; Dhimas Wicaksono
Journal of Metallurgical Engineering and Processing Technology Vol 3, No 1 (August 2022)
Publisher : UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v3i1.6905

Abstract

Komposit merupakan suatu material yang terdiri dari dua atau lebih campuran material yang berbeda. Komposit pada umumnya terdiri dari dua penyusun yaitu serat dan matriks. Serat pada komposit dapat menjadi dua bagian yaitu alam dan buatan. Untuk membuat komposit lebih ramah lingkungan maka dapat menggunakan serat alam sebagai komposisi dari komposit. Pada penelitian ini dilakukan pembuatan komposit dengan matriks dari resin epoxy dan utuk serat yang berasal dari serat pandan. Kemudian untuk serat pandan diberikan perlakukan variasi waktu perendaman pada larutan NaOH. Adapun variasi waktu yang dilakukan yaitu 0, 40, 60 dan 80 menit. Setelah dilakukan pembuatan komposit selanjutnya dilakukan pelapisan menggunakan kainfiberglass . Selanjutnya dilakukan pengujian menggunakan alat uji tarik dengan standar ASTM D3039 dan uji impact dengan standar D-256. Hasil dari penelitian ini menunjukkan semakin lama perendaman akan meningkatkan mekanis dari spesimen. Dimana untuk pengujian tarik spesimen dengan waktu perendaman 80 menit dapat menghasilkan nilai tegangan 3.4 kgf/mm 2 , beban maksimum yang dapat dicapai sebesar 541,03 kgf, dan untuk nilai kekuatan tarik maksimal mencapai 31,49 MPa. Untuk hasil uji impact paling tinggi terdapat pada variasi waktu 80 menit dengan nilai 2.3 J dan untuk nilai harga impact 0.0286 J/mm 2 .
Pengaruh Orientasi Arah Serat Terhadap Kekuatan Mekanis Komposit Serat Pandan Dengan Pelapisan Carbon Cloth Ferdinan Ashada; Sehono Sehono; Dhimas Wicaksono
Journal of Metallurgical Engineering and Processing Technology Vol 3, No 2 (February 2023)
Publisher : UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v3i2.6929

Abstract

Indonesia has a wealth of natural resources that are very abundant, where one of the natural resources that can be found in Indonesia is plants that contain fiber. At this time plants containing fiber were mostly used for the manufacture of handicrafts. One of the plants in question is the pandan plant, with the passage of time, it is necessary to use fiber from pandan plants so that it can be used for the latest technology. In this study, composites were made using pandan fibers, where for variations of this study, namely 0°, 90° and random. As for the process of making composites using the press method and in coating carbon cloth on composite surfaces using the hand lay up method. In this study, researchers conducted tensile testing based on ASTM D-3039 and for impact testing based on ASTM E-23. The results of this study were for specimens in the best tensile testing was at an angle variation of 90° with an average tensile strength of 29.43 MPa. The highest impact test results are in the 90° variation with an absorbable energy value of 2,622 J and for an impact price value of 0.033 J/mm2.
Analysis Of Tensile Strenghth Coconut Coir Fiber Composit Using The Vaccum Bagging Method Zaqi Arya Zullfawas Ilhami; Ferry Setiawan; Sehono Sehono
Journal of Metallurgical Engineering and Processing Technology Vol 5, No 1 (August 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v5i1.10524

Abstract

Abstract The utilization of coconut fiber currently is limited to making brooms or for burning, necessitating further applications. One of these applications is its use as a reinforcement in composites, enhancing utility value and environmental friendliness. This study focuses on crafting composites from coconut fiber with variations in fiber orientation: random, 0°, and 45°.Tensile testing results reveal that the random fiber orientation variation exhibits the best performance, with a stress of 27.30 MPa, attributed to higher density. The 45° fiber orientation variation has the lowest stress (24.23 MPa) due to a lower fiber count. In bending tests, the random fiber orientation variation again performs the best, with a bending stress of 120 MPa, attributed to its high density that strengthens the structure. The 0° fiber orientation has the lowest bending stress (88.59 MPa) due to lower fiber density.Overall, utilizing coconut fiber as reinforcement in composites shows promising positive outcomes, with the random fiber orientation variation providing the best mechanical performance. This endeavor holds the potential to enhance the economic and ecological value of coconut fiber.Keywords: Composite, fiber, coconut, tensile, bending
Analysis Of Tensile Strenghth Coconut Coir Fiber Composit Using The Vaccum Bagging Method Ilhami, Zaqi Arya Zullfawas; Setiawan, Ferry; Sehono, Sehono
Journal of Metallurgical Engineering and Processing Technology Vol 5, No 1 (August 2024)
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v5i1.10524

Abstract

Abstract The utilization of coconut fiber currently is limited to making brooms or for burning, necessitating further applications. One of these applications is its use as a reinforcement in composites, enhancing utility value and environmental friendliness. This study focuses on crafting composites from coconut fiber with variations in fiber orientation: random, 0°, and 45°.Tensile testing results reveal that the random fiber orientation variation exhibits the best performance, with a stress of 27.30 MPa, attributed to higher density. The 45° fiber orientation variation has the lowest stress (24.23 MPa) due to a lower fiber count. In bending tests, the random fiber orientation variation again performs the best, with a bending stress of 120 MPa, attributed to its high density that strengthens the structure. The 0° fiber orientation has the lowest bending stress (88.59 MPa) due to lower fiber density.Overall, utilizing coconut fiber as reinforcement in composites shows promising positive outcomes, with the random fiber orientation variation providing the best mechanical performance. This endeavor holds the potential to enhance the economic and ecological value of coconut fiber.Keywords: Composite, fiber, coconut, tensile, bending
Co-Authors Angger Bagus Prasetiyo Anugrah Putra Juang Zebua Arizka Dwi Supriono Aseng Franslee Sitopu Dedy Dwi Setiawan Defri Erianto Lesmana Dermawan, Muhammad Deant Adzany Dhimas Wicaksono Dhimas Wicaksono Dhimas Wicaksono Dhimas Wicaksono Dhimas Wicaksono Diaza Erlangga Briyan Nugraha Dicky Prasetyo Koesgi Errisonia, Arfie Armelia Farid Jayadi Fatir Slametriadi Fatir Ferdinan Ashada Fernanda, Reza Dwi Ferry Setiawan Ferry Setiawan Ferry Setiawan Ferry Setiawan Ferry Setiawan Ferry Setiawan Gaguk Eko Gati Warsono Galang Anugrah Pratama Galang Gilang Argya Dyaksa Graha Hardi Firmanda Haris Ardianto Haris Ardianto Haris Ardianto, Haris Hazhari, Fadhlah Hery Setiawan Hery Setiawan, Hery Ikbal Riski Putra Ikhsanul Madani Ilhami, Zaqi Arya Zullfawas Irmawa, Erwhin Isla Ikhlasul Hazmi Ivanda Zakaria Reynaldi Jayadi, Arid kiki selo ageng Mahesa, Ll. Aghyl Anugerah Marausna, Gaguk Maruli Tua Pranata Mochammad Davi Yudha Prakasa Muhamad Kusnanto Muhammad Iqbal Aizi Iqbal Muhammad Nurul Ihsan P Purwanto Paramarta, Brillian Rakha Prabowo, Fajar Yulianto Prasetiyo, Erwan Eko Putra, Brian Teo Putra, Ikbal Rizki Rahmat Dwi Handoko Reo Yudhono Reza Sheirico Surbakti septio Novanto Sitopu, Aseng Franslee Widyanto, Dwi Zaqi Arya Zullfawas Ilhami