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All Journal JMPM (Jurnal Material dan Proses Manufaktur) COJ (Coastal and Ocean Journal)
Pujianto, Andreas
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Agriculture, Biological Sciences & Forestry Engineering Environmental Science Mechanical Engineering Social Sciences

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The Influence of Sea Water Immersion on the Mechanical Properties and Structure of Carbon Fiber/Polyester-PEG Composite Materials Prakoso, Bagas; Pujianto, Andreas; Saharuddin, Saharuddin; Sirait, Egbert Josua; Yaqin, Rizqi Ilmal; Siahaan, Juniawan Preston; Fakhrudi, Yoga Ahdiat
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 9 No. 1 (2025): June
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v9i1.24448

Abstract

Structural batteries are a crucial solution in dealing with issues related to vehicle electrification to achieve energy sustainability in the future. However, the development of structural battery technology for electric-powered ships is still very limited. In particular, there are limitations in evaluating the mechanical performance of carbon fiber/polyester-PEG based composite materials for structural battery applications in electrically powered vessels. The main focus of this research is to fabricate carbon fiber/polyester-PEG to further observe the performance of its mechanical properties and structure when interacting with sea water. The value of the addition of polyethylene glycol (PEG) to the fabrication carried out was varied by 0%, 10%, and 25%. The results show that addition of 10% PEG produces a composite with the highest tensile strength, increasing the toughness of the polyester material. However, all samples experienced a decrease in tensile strength after immersion due to decreased bond performance between the fibers and seawater. The addition of 25% PEG resulted in a significant decrease in mechanical properties because high levels of PEG content made the sample easily brittle and destroyed when interacting with seawater. This research can provide initial studies on the development of carbon fiber/polyester-PEG composite materials that can be used as structural battery building materials for future electric boat applications.
The ANALISIS HUMAN ERROR PADA PENGOPERASIAN MESIN PENGGERAK KAPAL PENANGKAP IKAN DI BITUNG SULAWESI UTARA Demeianto, Bobby; Siahaan, Juniawan Preston; Priharanto, Yuniar E.; Yaqin, Rizqi Ilmal; Tumpu, Mula; Faqih, M. Bil; Pujianto, Andreas; Nurfauzi, Akhmad; Abrori, Muhammad Zaki Latif
Coastal and Ocean Journal (COJ) Vol 7 No 2 (2023): COJ (Coastal and Ocean Journal)
Publisher : Pusat Kajian Sumberdaya Pesisir dan Lautan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/coj.v7i2.50284

Abstract

Pengoperasian mesin penggerak kapal cukup kompleks, memerlukan keahlian dan keterampilan yang layak untuk dapat mengoperasikan mesin. banyaknya kesalahan dalam mengoperasikan mesin merupakan hal yang mungkin terjadi. Tujuan penelitian ini menganalisis terjadinya kesalahan mengoperasikan mesin penggerak kapal yang disebabkan oleh human eror. Untuk mendapatkan hasil yang valid, pengamatan kru ketika mengoperasikan mesin dilakukan, setiap pekerjaan di breakdown untuk mendapatkan pekerjaan spesifik secara detail dengan Hierarkikal task analisis. Data yang dihasilkan dengan Systematic Human Error Reduction and Prediction Approach (SHERPA) dianalisis secara komprehensif. Hasilnya di dapatkan 21 pekerjaan spesifik dengan kriteria pemeriksaan, aksi dan komunikasi. Human error yang terjadi pada profil risiko rendah dan sedang. Rekomendasi diberikan untuk memperbaiki profil risiko. Hasil penelitian ini memberikan dampak yang signifikan untuk mengatasi permasalahan pengoperasian mesin yang disebabkan kesalahan manusia.
Co-Authors Abrori, M. Zaki Latif Demeianto, Bobby Fakhrudi, Yoga Ahdiat Faqih, M. Bil Nurfauzi, Akhmad Prakoso, Bagas Priharanto, Yuniar E. Rizqi ilmal yaqin, Rizqi ilmal Saharuddin Siahaan, Juniawan Preston Sirait, Egbert Josua Tumpu, Mula