Muhammad Gilang Baihaqi, . (2026) ANALISIS VARIASI ARAH SERAT DAN FRAKSI VOLUME SERAT SABUT KELAPA TERHADAP KEKUATAN TARIK DAN KEKUATAN IMPAK. Skripsi thesis, Universitas Pembangunan Nasional Veteran Jakarta.
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Abstract
This study was conducted to examine the effect of fiber orientation and fiber volume fraction of coconut coir on the tensile and impact strength of polyester resin based composites. The fibers were arranged in three orientations, namely horizontal, vertical, and random, and the fiber volume fractions were varied at 10%, 15%, and 20%. Prior to fabrication, the fibers were treated with a 5% NaOH solution for two hours, and the composites were then manufactured using the hand lay up method. Tensile and impact tests were carried out in accordance with ASTM D638 and ISO 179 1 standards. The test results showed that the horizontal orientation with a 15% fiber volume fraction exhibited the best performance, with a tensile strength of 19.45 MPa and an impact strength of 0.1583 J per mm squared. In contrast, the lowest values were obtained from the vertical orientation with a 10% fiber volume fraction. Overall, coconut coir fiber reinforced composites demonstrate good potential, particularly in resisting impact loads, and therefore have promising prospects to be developed as an environmentally friendly alternative material for helmet applications in accordance with SNI standards.
| Item Type: | Thesis (Skripsi) |
|---|---|
| Additional Information: | [No.panggil: 2110311003] [Pembimbing 1: Nicky Yongkimandalan] [Pembimbing 2: Muchamad Oktaviandri] [Penguji 1: Sigit Pradana] [Penguji 2: Fahrudin] |
| Uncontrolled Keywords: | coconut coir fiber, polyester composite, tensile strength, impact strength, fiber volume fraction, fiber orientation. |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Fakultas Teknik > Program Studi Teknik Mesin (S1) |
| Depositing User: | MUHAMMAD GILANG BAIHAQI |
| Date Deposited: | 12 Feb 2026 07:37 |
| Last Modified: | 12 Feb 2026 07:37 |
| URI: | http://repository.upnvj.ac.id/id/eprint/42984 |
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