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All Journal Jurnal Rekayasa Sistem Industri ARMATUR : Artikel Teknik Mesin dan Manufaktur
Ayesha Gilang Prahara
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Aerospace Engineering Automotive Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Integrasi Manajemen Perubahan pada Proyek Lean Six Sigma dalam Peningkatan Mutu dan Kinerja Perusahaan Ayesha Gilang Prahara; Catharina Badra Nawangpalupi
Jurnal Rekayasa Sistem Industri Vol. 10 No. 2 (2021): Jurnal Rekayasa Sistem Industri
Publisher : Universitas Katolik Parahyangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (222.871 KB) | DOI: 10.26593/jrsi.v10i2.4064.113-120

Abstract

PT X is a small enterprise producing various types of jute fabric products. As a traditional business, the company still largely rely on the handiness and crafting skills from their workers. Whilst the business competition increases, PT X requires to strengthen the business by improving product quality in an efficient way. Besides high level of defects, PT X has also non-value-added activities in their production resulting in high overtime hours of their workers. Although PT X considers the overtime is acceptable to achieve the production target, there is room for improvement to reduce the defects as well as to shorten the production lead time. This paper aims to tackle the inefficiency and quality of the company. Lean six sigma is proposed to improve the condition and change management is implemented to ensure the commitment and participation of all staff for the success of change. Hence, this paper proposes the combination of change management and lean six sigma to improve production quality, lead time and staff participation. Combining DMAIC methods with change management, a methodology called DMA(C)IC is used with the middle C is for change. The implementation of the integration between change management in lean six sigma has resulted in the reduced number of defects and shorter lead time and the awareness of the workers to improve their working behavior.
Pengaruh Fraksi Volume dan Perlakuan Awal Terhadap Kekuatan Bending Pada Material Komposit Serat TKKS Nur Candra Dana Agusti Candra; Jefri Aldo; Ayesha Gilang Prahara; Agung Tri Noviyanto
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.10546

Abstract

This study aims to evaluate the effect of fiber volume fraction and alkali surface treatment on the bending strength of composite materials reinforced with empty fruit bunch (EFB) fibers from oil palm (TKKS). The TKKS fibers were soaked in NaOH solutions with concentrations of 2%, 4%, and 6% for fiber fractions of 20%, 40%, and 60%, respectively. The composite was fabricated using the hand lay-up method with epoxy resin as the matrix and tested using the three-point bending method based on ASTM D790. The test results showed that the 20% volume fraction treated with 2% NaOH yielded the highest average bending strength of 39.59 MPa. Meanwhile, the average strength for 40% and 60% fiber fractions were 31.88 MPa and 30.07 MPa, respectively. These findings indicate that increasing fiber volume fraction does not linearly improve mechanical performance, particularly in flexural loading. It can be concluded that the combination of 20% fiber volume fraction and 2% NaOH treatment provides the best performance in terms of bending strength for TKKS-based composites.
Co-Authors Agung Tri Noviyanto Catharina Badra Nawangpalupi Jefri Aldo Nur Candra Dana Agusti Candra