Analisis Pengaruh Variasi Ketebalan HDPE Coating Terhadap Kekuatan Adhesi Pada Pelat Kapal

Triyasyah, Mahesta Barly (2026) Analisis Pengaruh Variasi Ketebalan HDPE Coating Terhadap Kekuatan Adhesi Pada Pelat Kapal. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5018201006-Undergraduate_Theses.pdf Restricted to Repository staff only Download (4MB) | Request a copy

Abstract

Korosi merupakan salah satu permasalahan utama yang menyebabkan kegagalan material, khususnya pada bangunan laut yang beroperasi di lingkungan sangat korosif. Upaya preventif yang umum dilakukan untuk memperlambat laju korosi adalah melalui metode pelapisan permukaan. Penelitian ini bertujuan untuk mengevaluasi efektivitas pelapisan HDPE sebagai sistem perlindungan korosi pada baja ASTM A36, yang banyak digunakan pada konstruksi dan outfitting kapal. Metode penelitian dilakukan dengan memvariasikan ketebalan lapisan powder coating HDPE yang diaplikasikan menggunakan metode penyemprotan dan proses oven curing. Baja ASTM A36 dipotong menjadi enam spesimen, kemudian dilapisi HDPE dengan variasi ketebalan yang telah ditentukan. Selanjutnya, seluruh spesimen diuji kekuatan adhesinya menggunakan metode pull-off test berdasarkan standar ASTM D4541 dan ISO 4624, serta dianalisis mikrostrukturnya menggunakan SEM. Hasil pengujian menunjukkan bahwa spesimen dengan ketebalan lapisan 300 mikron memiliki nilai kekuatan adhesi tertinggi sebesar 3,10 MPa. Pengujian SEM memperlihatkan bahwa lapisan coating HDPE terbentuk secara kontinu, homogen, dan melekat baik pada permukaan substrat baja tanpa adanya indikasi celah maupun delaminasi. Dari sisi ekonomis, sistem coating HDPE memiliki biaya aplikasi yang lebih tinggi dibandingkan epoxy, namun menawarkan umur layanan yang lebih panjang dan kebutuhan perawatan yang lebih rendah. Berdasarkan hasil tersebut, coating HDPE dinilai layak diaplikasikan sebagai sistem perlindungan korosi pada komponen outfitting kapal.
=============================================================================================================================
Corrosion is one of the main problems causing material failure, particularly in marine structures operating in highly corrosive environments. A common preventive approach to slow down the corrosion rate is through surface coating methods. This study aims to evaluate the effectiveness of HDPE coating as a corrosion protection system for ASTM A36 steel, which is widely used in ship construction and outfitting components. The research method involved varying the thickness of HDPE powder coating applied using a spray technique followed by an oven curing process. ASTM A36 steel was cut into six specimens and coated with HDPE at predetermined thickness variations. Subsequently, all specimens were tested for adhesion strength using the pull-off test method based on ASTM D4541 and ISO 4624 standards, and their microstructures were analyzed using Scanning Electron Microscopy (SEM). The test results showed that the specimen with a coating thickness of 300 microns exhibited the highest adhesion strength of 3.10 MPa. SEM analysis indicated that the HDPE coating layer was formed continuously and homogeneously, adhering well to the steel substrate without any indication of gaps or delamination. From an economic perspective, the HDPE coating system has a higher application cost compared to epoxy coatings; however, it offers a longer service life and lower maintenance requirements. Based on these results, HDPE coating is considered suitable for application as a corrosion protection system on ship outfitting components.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Baja ASTM A36, Coating, Powder Coating, Adhesi, Korosi, Morfologi
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM163 Hulls (Naval architecture)
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis
Depositing User:	Mahesta Barly Triyansyah
Date Deposited:	02 Feb 2026 01:32
Last Modified:	02 Feb 2026 01:32
URI:	http://repository.its.ac.id/id/eprint/130692

Actions (login required)

View Item