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All Journal Jurnal MEKANIKAL Jurnal Ergonomi Indonesia (The Indonesian Journal of Ergonomic) AUSTENIT Jurnal Rekayasa Sistem Industri Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Jurnal Teknologi JISI UMJ (Jurnal Integrasi Sistem Industri UMJ) FLYWHEEL : Jurnal Teknik Mesin Untirta Teknika: Jurnal Sains dan Teknologi OPERATION EXCELLENCE: Journal of Applied Industrial Engineering Jurnal Sistem dan Manajemen Industri JURNAL REKAYASA SISTEM INDUSTRI PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Teknik Mesin Industri Inovatif : Jurnal Teknik Industri Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Jurnal Media Teknik dan Sistem Industri Journal of Industrial Engineering & Management Research (JIEMAR) JENIUS: Jurnal Terapan Teknik Industri Indonesian Journal of Industrial Engineering & Management METAL : Jurnal Sistem Mekanik dan Termal Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri JURNAL TEKNIK INDUSTRI Eduvest - Journal of Universal Studies Proceeding Mercu Buana Conference on Industrial Engineering METRIK SERIAL TEKNOLOGI DAN SAINS Trends in Mechanical Engineering Research Asian Journal of Social and Humanities Jurnal Riset danAplikasi Teknik Industri (JRATI) Journal Serambi Engineering (JSE) Jurnal Standardisasi
Hernadewita
Universitas Mercu Buana
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences 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 Mechanical Engineering Neuroscience Physics Public Health Social Sciences Transportation Other

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Workload Analysis in Quantity Optimization Labor Using FTE And RSME Methods in the Packaging Department of a Pharmaceutical Company Ramadhan, Gilang; Hernadewita, Hernadewita
Jurnal Teknologi Vol 17, No 1 (2025): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.17.1.63-70

Abstract

Human Resources (HR) is one of the most important parts of a company, as the main driver to achieve company goals. The company requires a workload calculation to determine the workload received by its employees. The method used in this workload calculation is Full Time Equivalent and Rating Scale Mental Effort to calculate the workload received by employees of the solid packing department in each packaging process. The results of this study on the blistering, sleeving, IPC, sealing, and shippering processes are in the normal category with a workload value in the range of 1-1.28, while the cartoning process is in the overload category with a workload value of 1.60 . The results of the RSME value calculation on the blistering and sleeving processes get a weighting value in the range of 71-85 with a moderately large category, the IPC, sealing, and shipping processes get a weighting value in the range of 59-70 with a fairly large category, while the cartoning process gets a weighting value in the range of 86-100 with a large category. So it's necessary to add 1 employee so that the FTE value is distributed properly or the workload is normal and the RSME becomes fairly large.
The manufacture and distribution temperature of aluminum molding for plastic beam from waste PP H, Hendra; Putra, Yoga Rahmadi; Septiana, Reski; Hernadewita; Demustila, Harly; Rispandi; Hermiyetti; Rahmayetty
METAL: Jurnal Sistem Mekanik dan Termal Vol. 9 No. 1 (2025): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.9.1.46-53.2025

Abstract

One method utilized in the production of plastic goods is injection molding. An essential part of the injection molding process is a mold, which is used to create different types of plastic goods in accordance with a preset design. The goal of this study is to create plastic beam molding molds using the EDM and milling production methods and evaluate the molds' form geometry and resilience to temperature. The material's thermal conductivity is 200 W/m.k. due to the properties of the 1060 aluminum alloy. It can be determined that the low mold temperature during the injection process causes plastic products to distort and swell. The results show that the EDM machining technique achieved a frequency of 142.8% and a duty cycle value of 57%. Using barrel temperatures of 1600C and 250°C for temperature resistance tests, the mold was determined to be in rather good condition when exposed to high temperatures. This is demonstrated by the results of testing the shape's geometry, which showed similarity in the product's dimensions with the mold and an increase in the product's dimensions.
EFFECT OF PLATE THICKNESS AND ROLL GAP ON THE GEOMETRIC QUALITY OF ROLLING PRODUCTS Hendra, Hendra; Fauzan, Ahmad; Zuliantoni, Zuliantoni; Aswata, Aswata; Nugraha, Kurnia; Hermiyetti, Hermiyetti; Hernadewita, Hernadewita
Trends in Mechanical Engineering Research Vol 1, No 1 (2023): June
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v1i1.20496

Abstract

The folding gate is a middle frame flanked by cross bars on the back of the shop door which has a higher level of strength than the body of the door and has better security. The U folding profile is made by a plastic deformation rolling process in which the plate is passed between the pressing roll and the sliding roll. Flat plates are used from the base material of metal plates with varying plate thickness where the metal forming process uses a cold working process. Factors that affect the results of rolling are roll dimensions, machine capacity, roll pressure lever settings and others. The thickness of the plate that can be rolled by the machine, the amount of force exerted on the roll gap, the evenness of the roll surface both vertically and horizontally and the alignment of the roll gap. The thicker the material with a large pressure spacing can affect the forming process so that it enlarges the largest angular deviation of 0.761 mm at a pressure spacing of 0.0 mm. A thicker material with a large pitch can enlarge the wing opening so that both wings bend imperfectly making the height deviation increase by 18.58 mm at a pitch of 0.0 mm. Thinner material with a large press distance at the start of the roll affects the flange width so that the rolling force exerted on the contact gap between the roll and the workpiece side is unbalanced. Get the largest size b- (8.030 mm) 0.0 mm pressure distance and b+ (7.843) 0.15 mm pressure distance. 
PRODUCTIVITY ANALYSIS IN THE MANUFACTURE OF DIE PLATE PRODUCTS USING THE OVERALL EQUIPMENT EFFECTIVENESS (OEE) METHOD AT PT. XYZ Septiana, Reski; Fauzan, Ghazi; Yusuf, Yusvardi; Ula, Shofiatul; Demustila, Harly; Hernadewita, Hernadewita; Hendra, Hendra; Setiawan, Ipick
Trends in Mechanical Engineering Research Vol 2, No 2 (2024): December
Publisher : Department of Mechanical Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/timer.v2i2.30946

Abstract

The effectiveness possessed by manufacturing machines is a parameter used to determine the performance of a company's manufacturing process. Effectiveness can be shown in the form of percentages as effective as a manufacturing process is carried out. Effectiveness can be a reference for companies in the implementation of production by evaluating charts of production that are considered less effective and do not meet standards. The factors that affect the effectiveness of a production machine can be seen in the availability or capability, quality, and performance where in this article the overall equipment effectiveness (OEE) method which has a production period of one month is used to get the effectiveness of the production process carried out. The results obtained in this study were 88.53% in the first week of proposition, 94.63% in the second week of production, and 91.58% in the third and last week of production.
Kajian Komprehensif Penerapan Ergonomi di Berbagai Sektor Kerja di Indonesia Tri Wahyu Setyawati; Hernadewita; Anwaruddin Yusuf; Hassan Fathuramdhan Wijaya
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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

Abstract

This literature review synthesizes findings from 20 recent studies that apply ergonomic principles and methods in various work contexts in Indonesia. These studies highlight the importance of ergonomics in optimizing human well-being and system performance, as well as addressing problems such as discomfort, fatigue, decreased productivity, and the risk of musculoskeletal disorders (MSDs). This review identifies common approaches such as postural risk assessment methods (REBA, NBM, ROSA) and physical redesign interventions. The results from the application of ergonomics consistently demonstrate positive outcomes, including a reduction in MSDs risk and increased productivity. This review also highlights research gaps, including the lack of focus on cognitive and organizational ergonomics, longitudinal studies, cost-benefit analysis, and the implementation of real-time technology. Future research is suggested to explore more integrated and to guarantee the establishment of an ergonomic and risk-free work environment in Indonesia.
PENGARUH PADUAN JENIS PLASTIK PP, HDPE, DAN LDPE DAUR ULANG TERHADAP SIFAT MEKANIK BALOK PLASTIK HASIL INEJCTION MOLDING Hendra; Abdulah, Basuki; Ula, Shofiatul; Septiana, Reski; Hernadewita; Hermiyetti
AUSTENIT Vol. 17 No. 1 (2025): AUSTENIT: April 2025
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v17i1.10589

Abstract

The abundant amount of plastic waste and the high environmental problems it caused encourage the efforts to utilize recycled plastic materials in various applications, including the manufacture of plastic block produced using injection molding. This study aimed to analyze the effect of a mixture of recycled plastic types (PP, HDPE, and LDPE) on the mechanical properties of plastic blocks. Two of the three types of recycled plastic used were combined with a 1:1 composition and then molded into plastic blocks. Testing was carried out through tensile tests and impact tests to assess the tensile strength and toughness of the material. The results showed that the PP + HDPE alloy produced a tensile stress value of 26.2 MPa, a strain of 29.2%, and an elastic modulus of 89.6 MPa. While the average impact test value of this alloy reached 0.168 Joules/mm² with a maximum bending load of 3.94 kgf/cm². This alloy can be used as a reference material for manufacturing plastic blocks that have good mechanical properties.
Optimasi Peramalan Penjualan Perishable Product dengan Metode Time Series Menggunakan Software POM-QM Dewi, Yulida Intani; Herdiana, Mochamad Rafi; Hernadewita
JURNAL RISET DAN APLIKASI TEKNIK INDUSTRI Vol. 3 No. 01 (2025): Volume 03 Issue 01, Agustus 2025
Publisher : Study Program of Industrial Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JRATI.2025.v03.i01.p10

Abstract

Perishable products are items with short shelf life. In this study, perishable product being analyzed has only one day shelf life. Therefore, an accurate forecast method is needed to avoid shortage and waste. Shortage occurs whend demand exceeds the company’s stock, resulting potential loss sales. Waste occurs when demand is lower than available stock, leading to overstock. Excexx inventory causing losses and reduces profit. This study is conducted using 2 scenarios, as shown in Table 1. Scenario 1 uses 60 days od data, while scenario 2 separates data between weekend and weekdays. Data abalysis was performed using time series method with POM-QM software. The best method is determined based on lower MAD, MSE, MAPE. The result of this study sho that separating the historical data between weekends and weekdays (scenario 2) leads to better forecasting accuracy, indicated by a lower MAPE compared to scenario 1. For weekend forecasting, the best method is exponential smoothing (Scenario 2A.2) with MAPE 10,05%. For weekday forecasting, the best method is moving average (Scenario 2B.1) with MAPE 15,40%. The research is expected to serve as a reference for company in selecting appropriate forecasting method. The goal is to help company anticipate shortage and waste in perishable products. The recommendation for company is automate the separation of weekend and weekday data to accelerate the forecasting prosess. Future research recommendation is use other forecast method and software, then consider factor consists of shelf life, promotion, national holidays, or national event.
Perancangan Optimasi Rute Pengiriman Buah Menggunakan Saving Matrix Dan Algoritma Genetika Untuk Meningkatkan Efisiensi Distribusi Jufri, Trizamsuar; Jaqin, Choesnul; Ichtiarto, Bonivasius Prasetya; Hernadewita, Hernadewita
Proceeding Mercu Buana Conference on Industrial Engineering Vol 7 (2025): SMART AND SUSTAINABLE INDUSRIES : DRIVING LOW-EMISSIONS AND RENEWABLE ENERGY TRANSFORM
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/MBCIE.2025.34457

Abstract

Distribusi produk pertanian, khususnya buah-buahan yang mudah rusak, memegang peranan vital dalam menjaga kualitas produk dan efisiensi logistik. Keterlambatan pengiriman menjadi masalah utama dalam distribusi buah di Provinsi Jawa Barat, dengan tingkat keterlambatan mencapai 15–20% dan tingkat kerusakan produk 10–15%. Penelitian ini bertujuan untuk membandingkan efektivitas dua metode optimasi rute distribusi, yaitu metode Saving Matrix dan Algoritma Genetika, dalam konteks pengiriman buah dari berbagai wilayah di Jawa Barat menuju Bandung. Penelitian ini mengintegrasikan parameter degradasi kualitas buah berdasarkan waktu pengiriman dan karakteristik komoditas, seperti masa simpan. Pendekatan mixed-method eksplanatori sekuensial digunakan dalam penelitian ini. Tahap kualitatif dilakukan melalui wawancara dan observasi terhadap delapan stakeholder industri logistik pertanian. Temuan kualitatif menjadi dasar perancangan model optimasi. Pada tahap kuantitatif, Saving Matrix dan Algoritma Genetika diimplementasikan menggunakan bahasa pemrograman Python dengan library seperti geopy, DEAP, dan matplotlib. Data jarak antar titik diperoleh dari koordinat geografis, dan model optimasi dikembangkan berdasarkan formulasi Vehicle Routing Problem (VRP) yang disesuaikan. Hasil penelitian menunjukkan bahwa Algoritma Genetika lebih unggul dalam konteks kompleksitas tinggi, dengan kemampuan mengurangi waktu pengiriman hingga 22% dan penurunan kerusakan stroberi dari 15% menjadi 7%. Sementara itu, Saving Matrix lebih unggul dari sisi kecepatan komputasi dan efisiensi awal, namun kurang adaptif terhadap variasi karakteristik produk dan medan geografis. Penelitian ini memberikan kontribusi pada praktik logistik pertanian dengan menawarkan solusi berbasis algoritma untuk distribusi buah yang lebih efisien dan adaptif terhadap kondisi riil. Hasil ini juga memperkaya literatur tentang penerapan heuristik dan evolusioner dalam konteks distribusi produk perishable di negara berkembang seperti Indonesia.
Problem-solving step analysis for increasing tire static balance levels: a case study Febriana, Tubagus Hendri; Herlambang, Hendi; Hernadewita, Hernadewita; Hasbullah, Hasbullah; Halim, Abdul
Jurnal Sistem dan Manajemen Industri Vol. 5 No. 1 (2021)
Publisher : Universitas Serang Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30656/jsmi.v5i1.3292

Abstract

One of the company's efforts in implementing the commitment to customer satisfaction is carried out through continuous improvement activities. All indicators are evaluated to determine the level of quality stability against process variations that will impact non-compliance with predetermined product specifications. One of the quality problems found in the tire manufacture industry is the out-percentage of tire uniformity, which suddenly increases, one of which is the value of static balance. This study analyses the process variation factors that occur to take corrective and preventive actions through a series of Root Cause Analysis (RCA), Fault Tree Analysis (FTA), and Failure Mode and Effect Analysis (FMEA). Refers to the analysis result, it was found that there was a problem with the rubber film gauge variation at the manufacturing step of the steel breaker, one of the material components in the tire construction. Two main factors cause rubber film thickness variation: rubber sticky with roll calendar, Radial Run Out (RRO) Roll Calendar out standard, and viscosity compound variation with 12 root problems found. The results of the improvements that have been made can effectively improve rubber film thickness variation, increase the Cpk level of steel breaker material from 0.82 to 1.91 and reduce the out percentage ratio of static balance by 54.65%.
Effects of ergonomics intervention on work accidents in the construction sector and their effect on productivity Asih, Ia; Setiawan, Indra; Hernadewita, Hernadewita; Hendra, Hendra
Jurnal Sistem dan Manajemen Industri Vol. 6 No. 1 (2022)
Publisher : Universitas Serang Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30656/jsmi.v6i1.4242

Abstract

Construction services are one of the most important and strategic sectors supporting the achievement of development in Indonesia. Through this sector, Indonesia can experience stable economic growth. In 2020, accidents in the construction sector were the highest cases compared to other sectors, with a death rate of more than 60,000 cases annually. The role of Occupational Health and Safety (OHS) Management and the application of its requirements when working at heights is crucial to protect against the dangers of work accidents due to high risk. This study aims to determine the relationship between the factors that affect work accidents in the construction sector and their effect on Productivity moderated by ergonomics. This research was conducted by analyzing surveys from work-at-height workers in the construction sector, with 107 respondents from projects in Jakarta. The data analysis method used is Structural Equation Modeling (SEM) based on non-covariance, namely Partial Least Square (PLS). Data analysis using Smart PLS 3.0 software. The results show that Ergonomics has no direct effect on Productivity, with p-value 0.313. Work Accidents do not directly affect Productivity with p-value 0.333. OHS Management does not directly affect Work Accidents with p-value 0.013. OHS Management has a direct effect on Productivity with p-value 0.000. Application of OHS Requirements has a direct effect on Work Accidents with p-value 0.527. Application of OHS Requirements has a direct effect on Productivity with p-value 0.001 and Application of OHS Requirements through Ergonomics has no direct effect on Productivity with p-value 0.000.
Co-Authors A Halim A. Indriani A. Mardian Abdul Halim Abdulah, Basuki Adam - Kamil Admon Dani Ananta Nasution Anizar Indriani Anizar Indriani Anwaruddin Yusuf Arum Oktifani Asih, Ia Aswata, Aswata Attaqwa, Yusita Awang, Muhamad Biantoro, Bambang Bonivasius Prasetya Ichtiarto Choesnul Jaqin Dafid Mega Saputra Daisy Ade Riany DAMAYANTI KARINI, NOFITASARI Dani, Admon Daruki Daruki Dedi Suryadi Defi Norita Dewi, Yulida Intan Dewi Dewi, Yulida Intani Dhimas Satria Dio Restu Putra Ardhika Ekasari Ekasari, Ekasari Elva Susanti Emi Pahiba Erny Listijorini Erny Listijorini Euis Nina Saparina Yuliani Euis Nina Saparina Yuliani, Euis Nina Saparina Evan Haviana Fauzan, Ahmad Fauzan, Ghazi Febriana, Tubagus Hendri Fernando, Very Fransisca Debora Frengki Hardian Gilang Ramadhan Gofur , Muhamad Gusri Akhyar Ibrahim Hadi, Yan Kurnia Hanuary, F. A. D. Hardian, Frengki Hardianto Iridiastadi Hargiani, Fransisca Xaveria Harly Demustila Haryadi, Haryadi Hasbullah Hasbullah Hasbullah Hasbullah Hassan Fathuramdhan Wijaya Haviana, Evan Hendi Herlambang Hendra H Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra, H Hendra, Hendra Hendra, Hendra Hendra, Hendra Hendro Siswono Herlambang, Hendi Hermiyetti Hermiyetti Hermiyetti, H Humiras Hardi Purba Ia Asih Iip Latipudin Indra Setiawan Indra Setiawan Indra Setiawan Jufri, Trizamsuar Khaerudin, Dedy Kurnia Nugraha Luh Putu Ratna Sundari Lusiana, Rina Maryani, Edna Mega Fatimah Rosana Mekro Permana Pinem, Mekro Permana Meliana, Dita Mislan Mochamad Rafi Herdiana N. Kholik Nasril - Nugraha, Kurnia Nugraha, Kurnia Nur Qodri Wijayanto Nurhaedi, Repi Nurlaili Nurlaili Nurwijayanti Oktavanni, Syahda Dwi Pasaribu, Enita Pebriyanto S Putera, Hilmana Radhia Putra, Yoga Rahmadi Putri - Rahmayetty Rahmi, Syifa Ur Reski Septiana Riki Efendi Rispandi Rosyadi, Imron Rufi'i S, Pebriyanto Sabilah, Ade Irpan Sadiq Ardo Wibowo Saputra, Dafid Mega Sarjono Sarjono, Sarjono Septiana, Reski Septiana, Reski Septiawati, Vera Setiadi, Raden Budi Setiawan, Indra Setiawan, Ipick Sidik Susilo Sidik Susilo Singgih Juniawan Singgih Juniawan Solly Aryza Sri Suhartini Suhartini, Yenni Supomo, Cathoche Uniqua Sutarmadi Sutarmadi Syahril Al Qirom Syaputra, Muhammad Julian Syukril, Ahmed Teuku Mirwan Saputra Tri Wahyu Setyawati Tubagus Hendri Febriana Ula, Shofiatul Ula, Shofiatul Ula, Shofiatul Uti Roysen Y. Saputra Y. Suhartini Yaman Parid Yan Mahesa Damanik Yenni Suhartini Yoserizal Yoserizal Yusuf, Yusvardi Yusuf, Yusvardi Zulfa Fitri Ikatrinasari Zuliantoni, Zuliantoni Zuniawan, Akhyar