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All Journal Jurnal Teknik Industri Jurnal Rekayasa Sistem Industri SPEKTRUM INDUSTRI SITEKIN: Jurnal Sains, Teknologi dan Industri Jurnal Optimasi Sistem Industri Heuristic Jurnal Sistem dan Manajemen Industri JOURNAL OF INDUSTRIAL AND MANUFACTURE ENGINEERING SCIENCE TECH: Jurnal Ilmiah Ilmu Pengetahuan dan Teknologi AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Kaizen : Management Systems and Industrial Engineering Journal Prosiding Seminar Nasional Sains dan Teknologi Terapan GERVASI: Jurnal Pengabdian kepada Masyarakat RANDANG TANA - Jurnal Pengabdian Masyarakat Jurnal Bakti Saintek: Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi Matrik : Jurnal Manajemen dan Teknik Industri Produksi J-ADIMAS (Jurnal Pengabdian kepada Masyarakat) Journal of Applied Engineering and Technological Science (JAETS) Bakti Cendana: Jurnal Pengabdian Masyarakat ABIDUMASY : Jurnal Pengabdian kepada Masyarakat Abditeknika - Jurnal Pengabdian Kepada Masyarakat JAPI: Jurnal Akses Pengabdian Indonesia Jurnal Pengabdian Masyarakat: BAKTI KITA The Center For Sustainable Development Studies Journal Industrial & System Engineering Journals (ISEJOU) Spektrum Industri
Desrina Yusi Irawati
Universitas Katolik Darma Cendika
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Other

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MTTR, MTBF, and OEE Analysis of a Blown Film Extrusion Machine for Preventive Maintenance Optimization Elisabet Priska Arkadewi Kononis; Desrina Yusi Irawati; David Andrian
Heuristic Vol 23, No 1 (2026)
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/heuristic.v23i1.133252

Abstract

Blown Film Extrusion Machines are critical equipment in the plastic manufacturing industry, where machine reliability and maintenance effectiveness significantly affect productivity and product quality. This condition was observed in a plastic manufacturing plant in Sidoarjo Regency, where maintenance activities are still predominantly reactive and lack a structured preventive maintenance system. This study aims to analyze the performance and reliability of Blown Film Extrusion Machines and to determine critical components as a basis for optimizing preventive maintenance through the integration of Overall Equipment Effectiveness (OEE), Mean Time Between Failure (MTBF), and Mean Time to Repair (MTTR). The research methodology employs a quantitative descriptive approach with an applied case study design. Data collection was conducted through direct observation of 11 Blown Film Extrusion Machines, including data on downtime, failure frequency, repair duration, operating time, and production output consisting of good and defective products. Data processing involved calculating OEE to evaluate machine effectiveness, MTBF to measure reliability, and MTTR to assess repair efficiency. Downtime analysis was also performed to identify components contributing most significantly to production stoppages. The results indicate an overall OEE value of 73%, an MTTR of 229.89 minutes, and an MTBF of 1,421.67 minutes. The PLC, chiller, and bearing were identified as the main contributors to downtime. This study concludes that low machine effectiveness is caused by frequent failures and prolonged repair times, highlighting the need to prioritize preventive maintenance on critical components to improve machine reliability and effectiveness.
Consumer Decision Analysis in Purchasing Disposable Diapers Using the Theory of Planned Behavior (TPB) Approach Aulia Patricia Dellaross Tentua; Hediani Wijono; Desrina Yusi Irawati
Heuristic Vol 22, No 2 (2025)
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/heuristic.v22i2.132676

Abstract

This study aims to examine the variables that impact the purchasing of disposable diapers by using an enlarged Theory of Planned Behavior (TPB) framework. Two hundred thirty-two people in Surabaya who were familiar with the use of disposable diapers for either infants or the elderly were surveyed online. A quantitative explanatory approach was used to examine this data. Knowledge, Morality, Tradition, and Perceived Risk are new components of the extended TPB model that take into consideration the specific social and cultural context of Indonesia. For this data analysis, we turned to LISREL, which stands for Structural Equation Modeling. The results show that environmental consciousness, understanding, and ethics significantly affect intent, behavior, and result. Some elements that affect the intention to buy include subjective norms and perceived behavioral control; on the other hand, perceived risk and tradition have an adverse effect on these factors. Consistent with the TPB paradigm when applied to one-time use products, these findings highlight the role of moral and cultural factors in determining responsible consumption behavior. Adding more variables to the TPB model has expanded research on industrial and consumer decision-making behavior.
Sentiment Analysis untuk Mengidentifikasi Faktor Penunjang Kesuksesan Feeder Wira Wiri Suroboyo Agrienta Bellanov; Desrina Yusi Irawati
Science Tech: Jurnal Ilmu Pengetahuan dan Teknologi Vol 11 No 2 (2025): August
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/st.vol11.no2.a19400

Abstract

Traffic congestion is a major issue in Surabaya, a metropolitan city with a high rate of private vehicle growth. To address this problem, the Surabaya city government launched the Wira Wiri Suroboyo feeder service as a complement to the Suroboyo Bus mass transportation system. This study aims to identify public responses to the service through sentiment analysis of comments posted on the official Instagram account @wirawirisuroboyo. The methodology employed sentiment analysis and text mining techniques using R Studio software. Data were collected via web scraping from 230 comments and processed through data cleaning, tokenization, case folding, and stopword removal. The results show that 37% of comments were positive, 16% expressed trust, 10% were sad, and 8% were negative. A word cloud revealed dominant words such as "halte" (bus stop), "rute" (route), and "bisa" (can), reflecting the community’s need for better accessibility and service coverage. This research contributes as an evaluation input and recommendation for policymakers to improve the quality and distribution of Wira Wiri Suroboyo services, supporting a more inclusive and sustainable public transport system in Surabaya.
Co-Authors Agrienta Bellanov Albertus Aprillio Handika Putra Andrian, David Anselmus Aprilio Mengi Ariel Julianus Pical Armadeo Ruben Canariesa Astanti, Dhita Widya Aulia Patricia Dellaross Tentua Bambang Syarudin Barbara, Esther Canariesa, Armadeo Ruben Candra, Jason Jeremy Candra, Robert Cecep Kusmana Cornelis Tredick Putra Pratama Damayanti, Florencia Agatha Daniel Alfrentino Ngabuk David Andrian David Andrian Deograsias Yoseph Dewantoro, Albertus Daru Dhita Widya Astanti Ega Reviera Vida Loka Elisabet Junita Elisabet Priska Arkadewi Kononis Esther Barbara Ezrani, Octavia Fidelchristo Pijoh Fortunatus, Yoel Hediani Wijono Hendrikus Putra Cromain Immanuel, Jemmy Jehanus, Maria Oktaviani Jemmy Immanuel Jemmy Immanuel Jonatan Jonatan Junita, Elisabet Kurniawan Wibisono Kurniawati, Melati Lewi Ardy Santosa Lilik Indrawati, Lilik Lucia Ina Trisjanti Lusi Mei Cahya Wulandari Maria Bernadete Mulyono Maria Oktaviani Jehanus Maria Theresita Litasya Sabon Massa, Paschal Nicollas Dominggo Melati Kurniawati Moses Laksono Singgih Nabila Novianti Rohmadani Nabila Novianti Romadani Nany Suryawati Nany Suryawati Nany Suryawati, Nany Narendra, Ravael Dimas Eka Narendra, Ravaelino Dimas Eka Ngabuk, Daniel Alfrentino Octavia Ezrani Olivia Marcella Onny Priskila Pamolango, Marchello Penta Paula Potifera Pical, Ariel Julianus Prastyo, Yohanes Okta Dwi Purba, Lasman Parulian Ravaelino Dimas Eka Narendra Ravaelino Dimas Eka Narendra Robert Candra Robertus Adi Nugroho Ruben Canariesa , Armadeo Sri Widari, Nyoman Sumuweng, Filippo Alfandi Tentua, Johan Patrick Teofilus Valentino Theresia Meliana Mystica Ave Thyophoida W.S. Panjaitan Wibowo, Dela Putri Yemima Hartono B Yoel Fortunatus Yohanes Okta Dwi Prastyo