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Hilmy , Zakwan
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Astronomy Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Transportation

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ANALISA KESALAHAN SCANNING ARAH ROLLING PLATE PADA MATERIAL TMCP ( THERMO MECHANICAL CONTROL PROCESS ) TERHADAP INTERPRETASI LOKASI CACAT DENGAN METODE ULTRASONIC TESTING Indrianto, Totok Tjatoer; Susilo, Trisno; Hilmy , Zakwan
JURNAL SAINS DAN TEKNOLOGI MARITIM Vol. 25 No. 2 (2025): Maret
Publisher : UNIMAR AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33556/jstm.v25i2.485

Abstract

TMCP (Thermo-Mechanical Control Process) material, also called anisotropic steel, has recently been used frequently for industrial needs in ship construction, onshore and offshore fabrication. Where TMCP material has different characteristics in its wave propagation speed (velocity) in the material between the direction of plate rolling (rolling direction) which is parallel or longitudinal direction and the transverse direction. This causes the refraction angle of wave propagation to change, thus making the appearance of an indication different on the monitor screen when Ultrasonic Testing (UT) is carried out. The methodology used for this study is to use the literature study method and verification of test results. Where in verifying using the manual ultrasonic testing (MUT) procedure in accordance with DNVGL-CG-0051 revision 2015. The expected results in this study are to provide knowledge about the characteristics of TMCP material and its effects on ultrasonic testing. As well as calibration techniques, how to name saved files and ultrasonic testing on TMCP materials, so that there are no errors in interpreting an indication.
PENGARUH TINGGI NOZZLE TERHADAP DIMENSI AKHIR DAN KEKASARAN PERMUKAAN BENDA KERJA PADA PROSES PEMOTONGAN MENGGUNAKAN PLASMA ARC CUTTING Nugraha, Angga; Hilmy , Zakwan; Susilo, Trisno; Adi, Fajar Tyas
JURNAL SAINS DAN TEKNOLOGI MARITIM Vol. 25 No. 2 (2025): Maret
Publisher : UNIMAR AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33556/jstm.v25i2.461

Abstract

Penelitian ini bertujuan untuk mengkaji pengaruh tinggi nozzle pada proses pemotongan menggunakan Plasma Arc Cutting (PAC) terhadap dimensi akhir dan kekasaran permukaan benda kerja. Plasma Arc Cutting adalah metode pemotongan yang menggunakan busur plasma untuk memtong berbagai jenis material, yang populer dalam industri manufaktur. Tinggi nozzle, yang merupakan jarak antara nozzle plasma dengan permukaan benda kerja, diyakini mempengaruhi kualitas pemotongan. Penelitian ini mengevaluasi perubahan dimensi potongan dan kekasaran permukaan benda kerja pada variasi tinggi nozzle yang berbeda, serta memberikan gambaran mengenai hubungan antara parameter tersebut dengan hasil pemotongan.
Co-Authors Adi, Fajar Tyas Angga Nugraha Indrianto, Totok Tjatoer Susilo, Trisno