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All Journal Jurnal MEKANIKAL Jurnal Ergonomi Indonesia (The Indonesian Journal of Ergonomic) 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 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) METAL : Jurnal Sistem Mekanik dan Termal Prosiding Simposium Nasional Rekayasa Aplikasi Perancangan dan Industri Proceeding Mercu Buana Conference on Industrial Engineering METRIK SERIAL TEKNOLOGI DAN SAINS Trends in Mechanical Engineering Research Asian Journal of Social and Humanities
Hernadewita, Hernadewita
Universitas Mercu Buana
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 Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Interval Waktu Pemeliharaan Berdasarkan Reliability Centered Maintanance (RCM) Pada Kinerja Saluran Udara Tegangan Menengah (SUTM) Perusahaan Listrik Negara Very Fernando; Hernadewita Hernadewita; Humiras Hardi Purba
Jurnal Media Teknik dan Sistem Industri Vol 5, No 2 (2021)
Publisher : Universitas Suryakancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35194/jmtsi.v5i2.1459

Abstract

The State Electricity Company (PLN) serves all Indonesian people from Sabang to Merauke with overhead lines and cable lines. The frequency of blackouts in an area due to disturbances in the channel. PLN seeks to suppress disturbances by carrying out maintenance, namely turning it off or without being extinguished. Medium Voltage Air Lines (SUTM) are more frequent disturbances. The worst damage happened to the conductors, Jumpers, and insulators. Damage will often occur if it is not predictable. In order to find out when damage occurs, a method based on Predictive Maintenance is used, namely maintenance based on historical disturbance data statistics. Predictive Maintenance can be realized by using Reliability Centered Maintenance (RCM). From the results of RCM calculations and statistical data on one PLN unit, there is a new value for predictive maintenance time intervals, for conductors maintenance schedule must be carried out every 2 days, Jumpers every 12 days, and isolators every 16 days before serious damage occurs and widespread blackout Perusahaan Listrik Negara (PLN) melayani seluruh masyarakat Indonesia dari Sabang sampai Merauke dengan saluran udara dan saluran kabel. Frekuensi terjadi pemadaman pada suatu wilayah karena adanya gangguan pada saluran tersebut. PLN berupaya untuk menekan gangguan dengan melakukan pemeliharaan, yaitu dipadamkan atau tanpa dipadamkan. Saluran Udara Tegangan Menengah (SUTM) lebih sering terjadi gangguan. Kerusakan terparah ternyata terjadi pada konduktor, Jumper dan isolator. Kerusakan akan sering terjadi apabila tidak mampu diprediksi. Untuk dapat mengetahui kapan akan terjadi kerusakan digunakan metode berbasis Predictive Maintanance, yaitu pemeliharaan berdasarkan statistik data historis gangguan. Predictive Maintenance dapat terwujud dengan menggunakan  Relliability Centered Maintanance (RCM). Dari hasil perhitungan RCM dan data statsik pada salah satu unit PLN, maka terdapat nilai baru intuk interval waktu pemeliharaan secara predictive, untuk konduktor harus dilakukan penjadwalan pemeliharaan setiap 2 hari, Jumper setiap 12 hari, dan Isolator setiap 16 hari sebelum terjadi kerusakan yang parah dan pemadaman meluas.
Identifikasi Cacat pada Proses Manufaktur Plastik Anti Bakteri menggunakan Mesin blown film Hendra, Hendra; Awang, Muhamad; Pinem, Mekro Permana; Satria, Dhimas; Nugraha, Kurnia; Septiana, Reski; Ekasari, Ekasari; Demustila, Harly; Hernadewita, Hernadewita; Hardian, Frengki
Jurnal Teknik Mesin Vol 17 No 2 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.2.1381

Abstract

One example of the current development of the plastic industry is Anti-Bacterial Plastic. Anti-bacterial plastic is a plastic that can store food well, even for a relatively long time compared to plastic in general. In the industrial world, companies are required to continue trying to find various ways and efforts to be able to compete with other companies that have the same business field. Defective products are products produced from a factory or industry where the product does not meet predetermined product quality standards. According to consumers, a good quality standard is if the product can be used according to consumer needs. However, if the product cannot be used according to consumer needs, then the product can be said to be a defective product. By analyzing defects in the antibacterial plastic manufacturing process, it can be useful to find problems that arise in the plastic packaging manufacturing process. The research method is carried out using a process of experimentation and measurement as well as checking defects visually. From the research results, three types of defects in anti-bacterial plastic products were found, namely eyelets, shrinkage and dimensional defects. These defects are characterized by spots on the plastic surface, wrinkles on the plastic surface, and dimensional differences in the plastic.
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.
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.
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 Adam - Kamil Admon Dani Anizar Indriani Anizar Indriani Anizar Indriani Asih, Ia Aswata, Aswata Awang, Muhamad Biantoro, Bambang Dafid Mega Saputra Daisy Ade Riany DAMAYANTI KARINI, NOFITASARI Daruki Daruki Dedi Suryadi Defi Norita Dhimas Satria Ekasari Ekasari, Ekasari Elva Susanti Emi Pahiba Erny Listijorini Erny Listijorini Euis Nina Saparina Yuliani Evan Haviana F. A. D. Hanuary Fauzan, Ahmad Fauzan, Ghazi Febriana, Tubagus Hendri Fransisca Debora Frengki Hardian Frengki Hardian Gilang Ramadhan Gofur , Muhamad H Hendra H Hermiyetti Hadi, Yan Kurnia Hardian, Frengki Hardianto Iridiastadi Hargiani, Fransisca Xaveria Harly Demustila Haryadi, Haryadi Hasbullah Hasbullah Hasbullah Hasbullah Haviana, Evan Hendi Herlambang Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra Hendra, Hendra Hendra, Hendra Hendra, Hendra Herlambang, Hendi Hermiyetti Hilmana Radhia Putera Humiras Hardi Purba Ia Asih Ichtiarto, Bonivasius Prasetya Indra Setiawan Indra Setiawan Indra Setiawan Jaqin, Choesnul Jufri, Trizamsuar Kurnia Nugraha Luh Putu Ratna Sundari Lusiana, Rina Maryani, Edna Mekro Permana Pinem, Mekro Permana N. Kholik Nasril - Nugraha, Kurnia Nugraha, Kurnia Nur Qodri Wijayanto Nurlaili Nurlaili Oktavanni, Syahda Dwi Pebriyanto S Putri - Rispandi Rosyadi, Imron Sabilah, Ade Irpan Sadiq Ardo Wibowo Saputra, Dafid Mega Sarjono Sarjono, Sarjono Septiana, Reski Septiana, Reski Septiawati, Vera Setiawan, Indra Setiawan, Ipick Sidik Susilo Sidik Susilo Singgih Juniawan Singgih Juniawan Solly Aryza Sri Suhartini Sutarmadi Sutarmadi Syahril Al Qirom Syaputra, Muhammad Julian Teuku Mirwan Saputra Tubagus Hendri Febriana Ula, Shofiatul Ula, Shofiatul Uti Roysen Very Fernando Y. Saputra Y. Suhartini Yaman Parid Yan Mahesa Damanik Yenni Suhartini Yenni Suhartini Yoserizal Yoserizal Yusuf, Yusvardi Yusuf, Yusvardi Zulfa Fitri Ikatrinasari Zuliantoni, Zuliantoni Zuniawan, Akhyar