Studi Eksperimental Sifat Mekanik Komposit Benang Serat Rami Menggunakan Distribusi Weibull

Wicaksana, Adi (2023) Studi Eksperimental Sifat Mekanik Komposit Benang Serat Rami Menggunakan Distribusi Weibull. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Rami adalah salah satu serat alam yang memiliki potensi besar untuk dimanfaatkan sebagai bahan penguat komposit yang ramah lingkungan. Potensi ini dikarenakan serat rami memiliki sifat kuat, ringan, tahan terhadap jamur, serangga, dan bakteri serta memiliki kemampuan daya serap cairan yang tinggi. Benang serat rami adalah produk jadi yang dapat digunakan sebagai bahan penguat komposit pengganti serat kaca. Aspek yang perlu diperhatikan dalam pemilihan material salah satunya adalah tingkat variasi nilai kekuatan material. Tingkat variasi yang tinggi dapat mempengaruhi kualitas produk yang dihasilkan. Tujuan dari penelitian ini adalah menganalisis sifat mekanik benang serat rami dan komposit benang serat rami dengan metode pendekatan statistik distribusi Weibull. Pada penelitian ini dilakukan studi eksperimen berupa pengukuran massa jenis benang serat rami, pengukuran diameter benang serat rami, pengujian tarik benang serat rami tunggal dengan variasi gauge length 10, 15, 20, 25, 30, 35, 40, 80, dan 160 mm, dan pengujian tarik komposit benang serat rami dengan gauge length 80 mm. komposit dibuat dengan metode vacuum infusion. Komposit tersusun dari 15 benang serat rami yang ditata sejajar dan searah dengan pembebanan. Hasil penelitian menunjukkan bahwa benang serat rami memiliki massa jenis sebesar 1,6 g/cm3; rata-rata diameter benang sebesar 0,60 mm; nilai tensile strength sebesar 70,36 MPa; Nilai strain sebesar 0,077; Modulus young sebesar 886 MPa; Modulus Weibull sebesar 2,08 hingga 5,21; dan Kekuatan tarik karakteristik sebesar 67,55 MPa. Komposit benang serat rami memiliki nilai tensile strength sebesar 31,51 MPa; strain sebesar 0,038; Modulus Young 1 sebesar 2.232 MPa; Modulus Young 2 sebesar 783 MPa; Modulus Weibull sebesar 6,09; dan kekuatan karakteristik sebesar 34,02 MPa. Nilai Modulus Weibull komposit benang serat rami lebih tinggi dibandingkan dengan benang serat rami karena adanya komponen matriks (epoksi) yang dapat menyalurkan beban tarik ke setiap serat. Proses perlakuan dan pembuatan komposit pada benang serat rami dapat mengubah sifat material menjadi lebih getas dengan nilai tensile strength lebih konsisten.
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Ramie is one of the natural fibers with great potential to be used as an environmentally friendly composite reinforcement material. This potential is due to the strong, lightweight, and resistant nature of ramie fibers against fungi, insects, and bacteria, as well as their high fluid absorption capacity. Ramie thread is a finished product that can be used as a composite reinforcement material, replacing glass fibers. One aspect to consider in material selection is the level of variation in material strength. High variation levels can affect the quality of the resulting products. The purpose of this research is to analyze the mechanical properties of ramie thread and composite ramie thread using the statistical approach of the Weibull distribution. This research involves experimental studies such as measuring the density of ramie thread, measuring the diameter of ramie thread, conducting tensile tests on single ramie thread with gauge lengths of 10, 15, 20, 25, 30, 35, 40, 80, and 160 mm, and conducting tensile tests on composite ramie thread with a gauge length of 80 mm. The composites are made using the vacuum infusion method. The composites consist of 15 parallel and aligned ramie threads under load. The results of the research show that ramie thread has density of 1.6 g/cm3, average diameter of 0.60 mm, tensile strength of 70.36 MPa, strain of 0.077, Young's modulus of 886 MPa, Weibull modulus ranging from 2.08 to 5.21, and characteristic tensile strength of 67.55 MPa. The composite ramie thread has tensile strength value of 31.51 MPa, strain of 0.038, Young's modulus 1 of 2,232 MPa, Young's modulus 2 of 783 MPa, Weibull modulus of 6.09, and characteristic strength of 34.02 MPa. The Weibull modulus value of the composite ramie thread is higher than that of the ramie thread due to the presence of the matrix component (epoxy) that can distribute tensile load to each fiber. The treatment and composite manufacturing process for ramie thread can alter the material properties to become more brittle, with a more consistent tensile strength..

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Benang serat rami, Material komposit, Modulus Weibull, Pengujian tarik; Composite material, Ramie thread, Tensile testing, Weibull Modulus
Subjects:	Q Science > QC Physics > QC173.4.C63 Composite materials T Technology > TA Engineering (General). Civil engineering (General) > TA418.9 Composite materials. Laminated materials. T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL240.5 Composite materials
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	Adi Wicaksana
Date Deposited:	21 Sep 2023 06:02
Last Modified:	21 Sep 2023 06:02
URI:	http://repository.its.ac.id/id/eprint/102829

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