I Made Astika, I Gusti Komang Dwijana


The purpose of this study is to investigate the mechanical properties i.e. tensile strength of composites coconut filter fiber. In the future this material can be used to replace the wood, bamboo and gipsun which are high price and lower water resistance.

The research material made with coconut filter fiber as reinforcement and matrix resin unsaturated polyester (UPRs) type Yukalac BQTN 157, with 1% hardener types MEKPO (Methyl Ethyl Ketone Peroxide) and fiber treatment by  0.5% KMnO4. Production methods are poltrusion and the variations of fiber volume fraction are 20, 25 and 30% and fiber length are 5, 10 and 15 mm. Testing of mechanical properties is tensile test (ASTM D3039-76)

The results of research show  that  the longer of fiber and the bigger of fiber volume fraction, the higher of tensile strength are obtained. The fracture mode are overload, debonding, pullout and crack deflection 

Full Text:



ASTM D 3039-76. 1990 “Standard Test Method for Tensile Properties of Fibre Resin Composite”. ASTM Standard and Literature References for Composites Material, 2ed., American Society for Testing and Materials, Philadelphia, PA.

Brahmakumar, M., Pavithran, C., and Pillai, R.M. 2005, ”Coconut fiber reinforced polyethylene composites such as effect of natural waxy surface layer of the fiber on fiber or matrix interfacial bonding and strength of composites”, Elsevier, Composite Science and Technology, 65 pp. 563-569.

Gibson, R. F.,1994. “Principles Of Composite Material Mechanics”. Mc Graw Hill Book Co.

Ikramuddin Malik, 2007, ”Sifat Mekanis Komposit Polimer Berpenguat Serat Sabut Kelapa Orientasi Acak yang diproduksi dengan Teknik Press Hand Lay-Up”, Skripsi, Universitas Udayana, Bali

Jacobs James A Thomas F,2005 “Engineering Materials Technology Structures, Processing, Properties and Selection”. New Jersey Columbus, Ohio.

Jamasri, Diharjo, K, Handiko, G. W., 2005 “Studi Perlakuan Alkali Terhadap Sifat Tarik Komposit Limbah Serat Sawit – Polyester”, Prosiding SNTTM IV, Universitas Udayana, Bal.

Juniartha I Made, 2006. “Pengaruh Persentase KMnO4 Sebagai Bahan Perlakuan Serat dan Kompsit Epoxy-Hardener Terhdap Sifat Mekanis Komposit Serat Tapis Kelapa/Epoxy”, Skripsi Program Studi Teknik Mesin, Fakultas Teknik Universitas Udayana, Bali.

Oksman, K., Skrifvars, M., Selin, J-F. 2003, “Natural Fiber as Reinforcement in Polylactic Acid (PLA) Composites”, Composites Science and Technology 63, Sciencedirect.com, 1317-1324,

Qalbuadi, 2007. “Analisa Kekuatan Tarik Dan Lentur Komposit Polyester Serat Tapis Kelapa Orientasi Acak Dengan Variasi Waktu Perlakuan NaOH”, Skripsi Program Studi Teknik Mesin, Fakultas Teknik Universitas Udayana, Bali.

DOI: https://doi.org/10.29303/dtm.v4i2.55


  • There are currently no refbacks.

Copyright (c) 2017 Dinamika Teknik Mesin

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

After being re-accredited, the Journal of Dinamika Teknik Mesin, still has sinta 3 (S3) which is valid until 2025.
View My Stats