Istrazivanja i projektovanja za privreduJournal of Applied Engineering Science


DOI: 10.5937/jaes0-37093 
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Creative Commons License

Volume 20 article 1022 pages: 1175-1183

Dony Setyawan*
Department of Naval Architecture, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo, Surabaya, Indonesia

Aries Sulisetyono
Department of Naval Architecture, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo, Surabaya, Indonesia

Wasis Dwi Aryawan
Department of Naval Architecture, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo, Surabaya, Indonesia

Non-ferrous material frequently slipped failure, hard clamp surface press slip occurs, and non-metal material lacks a rigidity hold for the clamp, resulting in a slip or break before the limit strength. So as efforts to prevent this problem are carried out from additional grips to reduce the occurrence of slips to obtain an increased testing accuracy. Additional grip designs are created using material sizes specified by ASTM D638. material grip receives pressure equal to 106.4 MPa, so to prevent deformation, stainless material is chosen as additional grip. This test is to determine the quality of the materials used for the ship. In this research, a test using additional grip was developed to improve technology for the test. Continued data analysis and a conclusion were obtained that the tensile test using tools has a high success rate. Rubber and fibre-reinforced plastic (FRP) specimens have a success rate of 60%. The factor causing the low success rate of wood testing is that the wood fibres have an irregular direction, so this uncertainty makes the tensile test results unsuccessful. From the tensile testing process, the ultimate stress value of specimens without grip tools is lower than tests with additional grips. The ultimate stress rubber value was 51.92%, the FRP was 16.40% more than the ultimate stress with the average value, and furthermore, the tensile strength of HDPE also elongated as accepted by the rules.

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The authors wished to thank the Ministry of Research, Technology and BRIN for Doctoral Program Research Grant of the year 2022 with entitled “Studi kehandalan konstruksi kapal berbahan HDPE akibat beban gelombang acak with contract number 084/E5/PG.02.00.PT/2022, and 1381/PKS/ITS/2022. The authors also thank to Laboratory Ship Strength and Construction helps in experimental tests.

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