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All Journal JPM17: Jurnal Pengabdian Masyarakat MEKANIKA - JURNAL TEKNIK MESIN JITMI (Jurnal Ilmiah Teknik dan Manajemen Industri) Jurnal Engine: Energi, Manufaktur, dan Material G-Tech : Jurnal Teknologi Terapan International Journal of Marine Engineering Innovation and Research Jurnal Techno Bahari Jurnal penelitian jalan dan Jembatan Jurnal Cakrawala Maritim Jurnal Cakrawala Maritim
Imah Luluk Kusminah
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Arts Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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The Effect of Coconut Fiber Usage and Clamshell Powder Replacement for Calcium Silicate Board’s Bending Strength Khafifulloh Al Faqih Zam Zammi; Widya Emilia Primaningtyas; Imah Luluk Kusminah; Novi Indah Riani; Rahma Rei Sakura; Benedicta Dian Alfanda
International Journal of Marine Engineering Innovation and Research Vol. 10 No. 1 (2025)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v10i1.4744

Abstract

Calcium silicate boards (CSB) are being explored in the maritime industry due to the mechanical strength and its resintance to humidity. The common CSB comprises fiber, silica sand, and portland cement. Clamshell is one of marine waste, who has a high calcium carbonate (CaCO3) content. Coconut fiber, a natural fiber known for its high strength and durability, presents sustainable solutions for enhancing the material properties of CSB. This study explores the forming mechanism and mechanical properties of the CSB in the usage and varied volume fraction addition of coconut fiber with the varied portion replacement silica sand using clamshell powder. The bending test was performed, and the experimental results were analyzed using ANOVA, to understand the effect of the mixture composition on the bending strength of the CSB. The addition of volume fraction coconut fiber significantly improve the bending strength of the boards, while the replacement of silica sand using clamshell powder gives various result. The maximum bending strength was 13.87 ± 0.64 Mpa by 0% clamshell powder replacement in 9% coconut fiber, and significantly drop at 8.26 ± 2.20 MPa by 50% clamshell powder with 50% silica sand. In fully portion replacement of silica sand, in which the addition of 100% clamshell powder, with 9% coconut fiber, the bending strength measured at 10.29 ± 1.31 MPa. The highest results exceeding the minimum requirement in ISO-8336 category A and B (saturated condition) , class 3 (>13 MPa) standards for interior wall installations. This study providing a more robust and eco-friendly materials alternatives that supports non or maritime industry needs in while resolve the environmental issue.
Optimizing Small Excavator Maintenance Activity Planning Using the Reliability-Centered Maintenance (RCM) Method II Imah Luluk Kusminah; Aulia Nadia Rachmat; Diah Ayu Nurjanah
International Journal of Marine Engineering Innovation and Research Vol. 9 No. 1 (2024)
Publisher : Department of Marine Engineering, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i1.5070

Abstract

Construction activities include the stages of construction, operation, maintenance, demolition, and rebuilding of a building. One of the construction activities in Indonesia is the construction of double-track railways. In the double-track railway construction project, there is a small excavator A which often fails. The excavator is used for excavation, land stripping, and embankment work. Failures that occur can disrupt construction implementation and can result in the company experiencing losses. Maintenance activities in the construction company that is the research location have a maintenance schedule, namely every 3 months and every 6 months based on the manual book, without adjusting the condition of the equipment. Therefore, it is necessary to analyze excavator components so that appropriate maintenance is known. RCM II is a maintenance evaluation method so that system components run well and according to the expected function by determining a maintenance action that must be carried out based on the characteristics of machine use so that maintenance activities run optimally. This research uses the RCM II method to determine the maintenance schedule, as well as the FMEA method. The FMEA results show 43 failure modes. RCM II decision worksheet analysis showed that 8 components had scheduled discard task maintenance, 3 components had scheduled restoration task maintenance, and 1 component had scheduled on-condition task maintenance.
Co-Authors Agung Nugroho Ahmad Fauzan Adziimaa Alfanda, Benedicta Dian Alma Lia Hakim Aminatus Sa’diyah Arief Subekti Arief Subekti Subekti Arninputranto, Wibowo Aulia Nadia Rachmat Dewi Rizqi Maimunah Diah Ayu Nurjanah Dianita Wardani Egyt Yusuf Hidayat Eky Novianarenti Imaniah Sriwijayasih Invinandri Joko Ahmad Khafifulloh Al Faqih Zam Zammi Lely Pramesty Lukman Handoko Mades Darul Khairansyah Mayriza Mubarokah Tambas Mey Rohmadhani Mey Rohmadhani Mochammad Syamzidan Rabani Muhammad Ihsan Afif Muhadzdzib Novi Indah Riani Primaningtyas, Widya Emilia Priyo Agus Setyawan Rahma Rei Sakura Richo Oktavian Indarto Richo Oktavian Indarto Rikky Leonard Santoso, Emie Subriyer Nasir Tarikh Azis Ramadani Tuty Emilia Agustina Yazdad Rachmad Hidayatullah