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Jurnal Sains dan Aplikasi Keilmuan Teknik Industri
Published by Universitas Ma Chung
ISSN : 28298519     EISSN : 28298748     DOI : https://doi.org/10.33479/jtiumc.v2i2.17
Core Subject : Economy, Science, Social, Engineering,
Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Environmental Science Industrial & Manufacturing Engineering Transportation
Jurnal Sains dan Aplikasi Keilmuan Teknik Industri (SAKTI) is the official publication of the Industrial Engineering Universitas Ma Chung. The logo of SAKTI consisting of water, a gear-shaped sun, and nature. Water represents something adaptable as well as a source of life, the sun represents new hope, and nature is the natural world and all the living things in it. As a result, SAKTI is established as a platform to support an ethical approach to research in the fields of industrial engineering and engineering management that is always up to date and adaptable, enabling it to benefit of all living things, particularly in Indonesia. With SAKTI, we can explore, develop, and elucidate the knowledge of industrial engineering and engineering management, to keep practitioners and researchers informed on current issues and best practices and to provide a platform for the sharing of ideas, knowledge, and expertise between researchers and practitioners. SAKTI accepts manuscripts pertaining to studies on the theoretical creation or real-world use of engineering management and industrial engineering technologies from manufacturing, healthcare, education, and other organizations. Submissions pertaining to literature reviews on particular theories or areas of inquiry are also welcome. SAKTI welcomes contributions in such areas of current analysis in Work Design and Measurement, Product Design and Development, Systems Design and Engineering, Logistics and Supply Chain Management, Operations Research, Quality, Reliability, and Maintenance Management, Data Mining and Artificial Intelligence, Production Planning and Inventory Control, Ergonomics and Human Factors, Information Systems and Technology Service Management, Sustainability, Decision Analysis, Industrial Automation, Business Analytics, Facilities Engineering and Energy Management.
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 52 Documents
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Determination of Physical Enviroment Factor Levels to Improve Productivity in the Filleting Process: Case Study: PT Bumi Menara Internusa Chenwidy, Johan; Hadi, Yuswono; Noya, Sunday
Jurnal Sains dan Aplikasi Keilmuan Teknik Industri (SAKTI) Vol. 4 No. 1 (2024): June 2024
Publisher : Teknik Industri Universitas Ma Chung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33479/sakti.v4i1.90

Abstract

PT Bumi Menara Internusa Surabaya is a producer of processed frozen seafood products, which uses a lot of human resources in its production. The use of human resources in the production process is closely related to productivity which will ultimately affect work efficiency and effectiveness. PT Bumi Menara Internusa itself has many products from various types of fish, one of which is salmon. The production process for frozen salmon products has several processing stages, one of which is the filleting process. The filleting process is a process where the fish flesh is separated from the fish backbone. To determine employee productivity in the production of frozen salmon products, employee output will be recorded every hour. Based on observations, records held by the company and interviews that have been conducted, it was found that employees in the fillet section were often unable to achieve the daily output targets that had been planned and calculated by the department concerned. Therefore, research was carried out using the Taguchi method to increase the productivity of salmon fillet employees. The results of the research carried out were an increase in productivity value of 3.556.
Cycle Time Study in Improving Production Output in the Garment Industry Sewing Line Kurnianingtias, Mayesti; Wibowo, Thiara Ananda; Khairunnisa, Hasna; Astrini, Galuh Yuli; Purwanningrum, Dinarisni
Jurnal Sains dan Aplikasi Keilmuan Teknik Industri (SAKTI) Vol. 4 No. 1 (2024): June 2024
Publisher : Teknik Industri Universitas Ma Chung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33479/sakti.v4i1.91

Abstract

The garment industry is one of the fastest-paced production environments, where speed and accuracy are crucial for meeting global customer demand. Cycle time plays an important role in satisfying the speed factor as it represents the overall time needed to produce a single piece of a product. Maintaining an appropriate cycle time is key to achieving production line balance. This study aims to analyze the cycle time of men's jacket production on a sewing line in an Indonesian garment industry by comparing the actual cycle time with the standard cycle time based on the operation breakdown for each production process step. Four significant discrepancies in actual cycle time were identified, ranging from 16% to 95%, indicating that the actual cycle time was significantly longer than the standard cycle time. The root cause of the highest cycle time was analyzed using Fishbone and 5 Whys analysis to understand the problem from each factor and sub-factor. Six improvement action plans were proposed and implemented, resulting in a 57.81% reduction in actual cycle time, from 127.66 seconds to 53.85 seconds, making it 17.66% faster than the standard cycle time. Furthermore, the total output per hour increased by approximately 216.67%, from 12 pieces to 38 pieces. This result implies that the study successfully identified the root of the problem on the sewing line and managed to increase production output.
Perancangan Website untuk Menangani Keluhan Pelanggan di Industri Sepeda: Analisis Gap Menggunakan WebQual dan IPA Wardani, Tania Eka; Mulyana, Ig. Jaka; Trihastuti, Dian
Jurnal Sains dan Aplikasi Keilmuan Teknik Industri (SAKTI) Vol. 4 No. 2 (2024): December 2024
Publisher : Teknik Industri Universitas Ma Chung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33479/sakti.v4i2.51

Abstract

Salah satu sektor yang memengaruhi perekonomian Indonesia adalah industri manufaktur, termasuk industri sepeda. PT Insera Sena, sebagai produsen sepeda, menghadapi tantangan dalam menangani data penjualan dan keluhan pelanggan yang tersebar dalam file terpisah, sehingga menyulitkan analisis komparatif. Untuk mengatasi hal ini, studi ini merancang sebuah website berbasis metode WebQual yang menganalisis kualitas situs melalui empat dimensi: usability, information quality, service interaction quality, dan overall impression. Data diperoleh melalui survei kuesioner kepada divisi International Business menggunakan skala harapan dan persepsi. Analisis dilakukan menggunakan Gap Analysis dan Importance Performance Analysis (IPA) untuk mengidentifikasi atribut yang perlu diperbaiki. Hasil menunjukkan bahwa dimensi usability memiliki gap sebesar -0,47 dan overall dimension sebesar -0,99, menunjukkan masih terdapat ketidaksesuaian antara harapan dan persepsi pengguna. Atribut yang menjadi prioritas perbaikan adalah Q1, Q2, Q3, Q4, dan Q23, yang berhubungan dengan kemudahan penggunaan dan tampilan situs. Studi ini memberikan panduan bagi perusahaan untuk meningkatkan kualitas website dan kepuasan pelanggan secara efektif.
Towards the X-shaped Person, the Next (Industrial) Leader in the Era of Industry 4.0 and Society 5.0 Baskoro, Gembong
Jurnal Sains dan Aplikasi Keilmuan Teknik Industri (SAKTI) Vol. 4 No. 2 (2024): December 2024
Publisher : Teknik Industri Universitas Ma Chung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33479/sakti.v4i2.53

Abstract

This paper examines the impact on the development of industry and society known as industry 4.0 and society 5.0. Caused by technological and business pressures influenced by the rapid development of digital technology. Industry 4.0 and society 5.0 require the type of person who has digital literacy as well as leadership abilities to lead the industry in an uncertain market situation that can have an impact on disruption. Therefore, to ensure the sustainability of the industry, the type of person who is able to lead the industry through increasing business pressures and strategic environment is needed. This paper evaluates and assesses three shaped of person called I, T, and X on factors related to industrial sustainability, especially in the future due to industry 4.0. The assessment results show that X-shaped person has the highest score of 3.75 compared to I with a score of 1.31 and T with a score of 2.66. This result is specifically influenced by the leadership factor because it has the highest weighting factor of 0.34 for this assessment. This paper proposes an X-shaped person development method both through internal and external programs such as the Leadership Development Program (LDP) or government leadership program held by the National Resilience Institute of the Republic of Indonesia (Lemhannas RI). It is concluded that the X-shaped person is important to be developed for the sustainability and competitiveness of industry today and in the future.
Optimization of Tobacco Warehouse Temperature to Reduce Defects in Hand-Rolled Kretek Cigarette Products at PT XYZ Margaretha, Natasha; Ekawati, Yurida; Oktiarso, Teguh
Jurnal Sains dan Aplikasi Keilmuan Teknik Industri (SAKTI) Vol. 4 No. 2 (2024): December 2024
Publisher : Teknik Industri Universitas Ma Chung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33479/sakti.v4i2.92

Abstract

The quality of tobacco is a critical component in cigarette production, with moisture content standards ranging from 18% to 19% to prevent production issues caused by tobacco being too dry or too moist. At PT XYZ, a cigarette manufacturing company, storage room temperature was identified as a key factor affecting tobacco moisture content. This study aimed to determine the optimal storage room temperature to maintain tobacco quality using quality control techniques and experimental design. A correlation test revealed a very strong negative relationship (91.812%) between storage room temperature and tobacco moisture content. Using a Completely Randomized Design (CRD) and a one-way ANOVA test, the analysis showed that the storage room temperature significantly impacted moisture content. The optimal temperature for maintaining tobacco quality was found to be 21˚C. These findings underscore the importance of precise temperature control in ensuring tobacco quality, contributing to improved production processes and product consistency in the cigarette industry.
Analisis Faktor Penentu dalam Pemilihan Indekos Mahasiswa di Surabaya: Studi dengan Pendekatan Mixed-Method Prihono, Prihono; Nurcahyanie, Yunia Dwie
Jurnal Sains dan Aplikasi Keilmuan Teknik Industri (SAKTI) Vol. 4 No. 2 (2024): December 2024
Publisher : Teknik Industri Universitas Ma Chung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33479/sakti.v4i2.93

Abstract

This study examines the factors influencing students' decisions in selecting boarding houses in Surabaya, an increasingly critical issue as demand for student housing rises post-pandemic. A mixed-method approach was employed, beginning with open-ended questionnaires to identify broad preferences, followed by closed-ended questionnaires to rank key factors. Factor analysis using SPSS revealed three dominant factors: security and environment (33.79%), location and price (22.19%), and facilities (20.47%). Among these, security and environment emerged as the most influential, underscoring the importance of safety and a clean, comfortable setting. Location and price ranked second, with students favoring affordable boarding houses near campuses and essential services. Facilities, including high-speed internet and clean sanitation, also significantly impacted decisions. These findings offer practical insights for boarding house owners to prioritize safety measures, enhance cleanliness, and improve facilities to attract students. While the results align with existing literature on housing preferences, this study is limited by its sample size and focus on Surabaya, which may not generalize to other contexts. Future research could explore additional factors such as parking availability or shared amenities and extend the analysis to other cities for comparative insights. This research contributes to understanding student housing preferences and offers actionable recommendations for managing boarding houses in urban educational hubs.
Improving Machine Efficiency at PT PID Ongkowidjojo: OEE and FMEA Analysis Leading to Significant Gains in Primary Stage 3 Prameswari, Maria Immaculata; Noya, Sunday; Purnomo, Purnomo
Jurnal Sains dan Aplikasi Keilmuan Teknik Industri (SAKTI) Vol. 4 No. 2 (2024): December 2024
Publisher : Teknik Industri Universitas Ma Chung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33479/sakti.v4i2.96

Abstract

This study aims to enhance equipment effectiveness in the primary cigarette manufacturing process at PT. PID Ongkowidjojo, focusing on Stage 3, a critical production phase with significant downtime due to equipment failures. Using Overall Equipment Effectiveness (OEE) and Failure Mode and Effects Analysis (FMEA), the research identified nine key failure modes affecting interconnected machines. Based on these findings, targeted improvements were implemented, including scheduled maintenance, real-time monitoring, periodic cleaning, and spare parts inventory management. As a result, the OEE value increased from 50.52% to 56.57%, driven by improvements in Availability (71.07% to 79.22%) and Quality Rate (92% to 93.36%), despite a slight decline in Performance Rate (77.20% to 76.25%). This study highlights the importance of integrating OEE and FMEA methodologies to reduce downtime and address equipment inefficiencies. By tackling the Six Big Losses, particularly equipment failures, this approach offers actionable insights for maintaining operational efficiency and fostering continuous improvement in manufacturing systems.
Pengembangan Benang Berkelanjutan Berbasis Serat Nanas dengan Teknik Pemintalan Open-End Rotor Khairunnisa, Hasna; Rusman, Fahmi Fawzy; Aribowo, Irham; Yulianto, Bambang; Mahmudi, Rahmad Ali
Jurnal Sains dan Aplikasi Keilmuan Teknik Industri (SAKTI) Vol. 5 No. 1 (2025): June 2025
Publisher : Teknik Industri Universitas Ma Chung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Bahan baku benang yakni serat dapat berasal dari berbagai macam jenis serat, baik serat alam maupun serat buatan. Tekstil berkelanjutan merupakan isu yang terus mendorong untuk pencarian sumber serat alternatif dari alam yang lebih ramah lingkungan dan mendukung sirkularitas. Pineapple Leaf Fibre (PALF) atau serat nanas merupakan salah satu potensi bahan baku yang dapat dikembangkan. Penelitian ini ingin mengembangkan dan mengkaji kemampuan dan kualitas benang yang dihasilkan dari serat nanas yang dikombinasikan dengan serat alam lainnya yaitu serat cotton. Mesin open-end spinning digunakan untuk memproduksi benang campuran serat nanas dan cotton dengan mempertimbangkan berbagai keunggulan dan fleksibilitas mesin tersebut. Studi dilakukan berdasarkan desain eksperimen yang mempertimbangkan 2 parameter utama yakni Nomor Benang (Ne) serta komposisi serat nanas dan cotton, juga dilakukan perbandingan dari 2 sumber serat nanas yang berbeda. Produksi dilakukan pada mesin drawing finisher dan breaker untuk menghasilkan sliver campuran berdasarkan komposisi yang ditentukan, kemudian benang diproduksi pada mesin open-end dengan 8 kombinasi eksperimen. Benang yang telah diproduksi kemudian melewati pengujian parameter kualitas yakni nomor benang, ketidakrataan benang, serta tenacity. Pengujian kualitas membuktikan bahwa serat nanas yang dikombinasikan dengan serat cotton dapat diproduksi menjadi benang dengan kualitas yang sesuai. Namun, uji statistik menunjukkan belum terdapat bukti kuat bahwa faktor material, komposisi dan nomor benang berpengaruh signifikan terhadap kualitas benang campuran serat nanas dan cotton. Variasi komposisi campuran cenderung berkemungkinan untuk mempengaruhi ketidakrataan dan tenacity daripada variasi nomor benang, sedangkan faktor material dan komposisi lebih berpengaruh ke ketidakrataan benang. Lebih jauh, faktor komposisi dan nomor benang lebih berpengaruh ke tenacity.
Pengaruh Resistansi dan Diameter Kawat Nichrome pada Performa Pemanasan Rompi Berpemanas Elektrik Purwanningrum, Dinarisni; Murti, Wilda; Eddy, Yulius Sarjono; Syahputra , Ibnu
Jurnal Sains dan Aplikasi Keilmuan Teknik Industri (SAKTI) Vol. 5 No. 1 (2025): June 2025
Publisher : Teknik Industri Universitas Ma Chung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Rompi berpemanas elektrik merupakan solusi inovatif untuk meningkatkan kenyamanan termal, khususnya di lingkungan bersuhu rendah. Salah satu elemen utama dalam sistem pemanas ini adalah elemen pemanas berbasis kawat konduktor. Dalam penelitian ini digunakan kawat Nichrome (NiCr) sebagai elemen pemanas dengan memanfaatkan prinsip pemanasan Joule, yaitu menghasilkan panas saat dialiri arus listrik. Penelitian ini bertujuan untuk menganalisis pengaruh resistansi dan diameter kawat nichrome terhadap performa pemanasan rompi, terutama pada laju kenaikan suhu. Eksperimen dilakukan dengan dua variasi diameter kawat (0,2 mm dan 0,3 mm) dan tiga tingkat resistansi (8Ω, 10Ω, dan 12Ω), menggunakan catu daya 5V. Hasil pengujian menunjukkan bahwa semakin kecil nilai resistansi, semakin cepat laju pemanasan yang terjadi, sesuai dengan Hukum Joule. Selain itu, kawat dengan diameter lebih kecil menghasilkan panas yang lebih besar per satuan luas permukaan, sehingga suhu meningkat lebih signifikan. Analisis regresi linear menunjukkan bahwa kombinasi diameter 0,2 mm dengan resistansi 8Ω menghasilkan laju pemanasan tertinggi (slope = 1,0157), sedangkan kombinasi diameter 0,3 mm dengan resistansi 12Ω menunjukkan laju pemanasan terendah (slope = 0,525). Temuan ini menunjukkan bahwa resistansi dan diameter kawat berperan signifikan dalam memengaruhi performa pemanasan rompi elektrik. Diharapkan, hasil penelitian ini dapat memberikan kontribusi dalam memvalidasi penerapan hukum Joule secara praktis pada perancangan rompi berpemanas elektrik.
Eco-friendly Corrosion Inhibitor Coatings Based on Plant Waste Extracts: A Comparative Study of Tea Waste and Orange Peel Filardli, Abdullah Malik Islam; Fadilah, Muhammad Zidan; Syahrizal, Muhammad Isyar; Rahmawati, Mafniatul; Febriani, Anisa Dwi; Adhilisty, Clarissa Mayla; Pratiwi, Latifah Indah; Salsabila, Ulfa Mazroatus; Setiawan, Naufal Dafa Akbar; Syahputra, Muhammad Rakha; Ghani, Afzaal Zaydan
Jurnal Sains dan Aplikasi Keilmuan Teknik Industri (SAKTI) Vol. 5 No. 1 (2025): June 2025
Publisher : Teknik Industri Universitas Ma Chung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study seeks to assess the efficacy of plant-based waste extracts, namely orange peel extract and tea waste extract, as natural corrosion inhibitors for mild steel submerged in a 3.5% NaCl solution. The methodology adhered to ASTM G31 standards, employing mild steel specimens coated with each extract using three application techniques: brushing, immersion, and spraying. The weight loss method was used to measure corrosion rates (Mmpy), enabling the calculation of inhibition efficiency (IE%) for each specimen. The uncoated control specimen consistently exhibited the highest corrosion rate (3.4523 Mmpy), categorized as "Poor." Specimens treated with orange peel extract showed significantly lower corrosion rates, with the brushing method yielding an inhibition efficiency of 98.7%, categorized as "Excellent." Likewise, specimens coated with tea waste extract demonstrated remarkable inhibition, with the brushing and immersion techniques achieving efficiencies of 98.9% and 97.7%, respectively. These results indicate that both orange peel and tea waste extracts serve as promising, eco-friendly alternatives for corrosion protection of mild steel, with their effectiveness significantly influenced by the method of application.

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