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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 Proceeding Mercu Buana Conference on Industrial Engineering METRIK SERIAL TEKNOLOGI DAN SAINS Trends in Mechanical Engineering Research Asian Journal of Social and Humanities Jurnal Standardisasi
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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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.
IMPLEMENTASI UJI BANDING ANTAR LABORATORIUM DAN ANALISA DIAGRAM FISHBONE PADA PARAMETER MEKANIS BAJA TULANGAN BETON SNI 2052:2017 Mislan, Mislan; Efendi, Riki; Syukril, Ahmed; Hernadewita, Hernadewita; Khaerudin, Dedy
JURNAL STANDARDISASI Vol 26, No 2 (2024)
Publisher : Badan Standardisasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31153/js.v26i2.1022

Abstract

Salah satu langkah mewujudkan hasil uji yang akurat untuk laboratorium pengujian mekanis baja tulangan beton SNI 2052:2017 adalah melalui partisipasi uji profisiensi, namun keterbatasan pengadaan uji profisiensi menjadikan uji banding antar laboratorium sebagai opsi alternatif. Penelitian ini bertujuan untuk menilai kinerja laboratorium dengan mengimplementasikan uji banding antar laboratorium dan melakukan analisa akar masalah dari hasil evaluasi outlier serta memberikan usulan perbaikan. Penelitian ini menggunakan metode SNI ISO 13528:2022 untuk uji homogenitas, stabilitas sampel, dan analisa statistik Z-score untuk menilai kinerja laboratorium. Hasil analisa diperoleh 8 laboratorium dengan kinerja satisfactory untuk semua parameter uji,  3 laboratorium berkategori warning yaitu laboratorium A4 untuk kuat luluh DB 13 mm, laboratorium A5 untuk kuat luluh DB 13 mm, A7 untuk kuat luluh DB 19 mm, dan 1 laboratorium kategori outlier yaitu laboratorium A7 untuk kuat Tarik DB 13 mm. Hasil analisa diagram fishbone dari laboratorium outlier adalah personil laboratorium perlu pelatihan tambahan, pemantauan rutin terhadap akurasi mesin tidak berjalan, maintenance mesin dan pengecekan kondisi grip tidak berjalan dengan baik serta belum adanya prosedur pengecekan mesin uji menggunakan sampel referensi/acuan. Usulan perbaikan untuk laboratorium outlier adalah pelatihan bagi personel dan pemantauan kerja personel, pengecekan dan pengawasan akurasi mesin secara disiplin serta pembuatan jadwal perawatan seperti pengecekkan kondisi grip, kemudian pembuatan prosedur pemastian kondisi mesin uji melalui uji sampel referensi/acuan, serta pelatihan metode uji dan pemantauan terhadap pelaksanaan prosedur.
Applying Programmable Logic Control (PLC) for Control Motors, Blower and Heater in the Rubber Drying Processing Hendra, Hendra; S, Pebriyanto; Hernadewita, Hernadewita; Hermiyetti, Hermiyetti; Yoserizal, Yoserizal
Jurnal Ilmiah Teknik Elektro Komputer dan Informatika Vol. 7 No. 1 (2021): April
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jiteki.v7i1.20514

Abstract

Rubber is the largest commodity in Indonesia. Rubber is traditionally processed and dried using bamboo hangers, manual arrangement of bamboo drying rubber, heat from firewood for drying chambers and large areas. This drying process has disadvantages, namely inconsistent drying time, non-uniform room temperature, unequal product quality, and unfriendly drying process. The solution is to overcome the automatic rubber dryer machine that is made using PLC to get the motor operating system for automatic rubber handling in the drying chamber, fixed drying temperature, small drying area, and fast-drying time. The experimental method is used for the automatic rubber drying process with PLC to control the movement of rubber in/out of the chamber dryer, heater, and blower for distribution temperature and other components. From the test results, it is found that the control system can work well at the voltage of each component of 220V, such as a sensor with a current of 0.21A and a stop time of 0.01s-0.3 seconds. The motor, heater, and blower are active (ON) at 220V with a current of 8.27A. The heater requires a current of 1.99A for active (ON) and an active blower (ON) with a current of 0.75A.
Interval Waktu Pemeliharaan Berdasarkan Reliability Centered Maintanance (RCM) Pada Kinerja Saluran Udara Tegangan Menengah (SUTM) Perusahaan Listrik Negara Fernando, Very; Hernadewita, Hernadewita; Purba, Humiras Hardi
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.
MEASUREMENT OF VIBRATION LEVELS AND GEOMETRIC QUALITY OF RECONDITIONED LATHE PRODUCTS WITH VARIATIONS IN BASIC MACHINING ELEMENTS Hendra, Hendra; Dani, Admon; Suryadi, Dedi; Hernadewita, Hernadewita
Asian Journal of Social and Humanities Vol. 2 No. 1 (2023): Asian Journal of Social and Humanities
Publisher : Pelopor Publikasi Akademika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59888/ajosh.v2i1.160

Abstract

Machining parameters are something that must be considered, where machining parameters are related to vibrations (chatters) that occur during the cutting process. Vibration (chatter) can affect the quality of the geometry of the resulting product. To find out this, it is necessary to test the influence of machining parameters on the vibration level and quality of product geometry. Measurement of vibration level values and product geometry quality is carried out at variations of 60 rpm, 215 rpm, 330 rpm and 1140 rpm, with variations in cutting depth of 0.5 mm, 1 mm, 2 mm and 3 mm. The results of the cutting process with the influence of machining parameters (spindle rotation and cutting depth) on vibration, the most optimal value with a low vibration level is obtained, namely in the cutting process with spindle rotation parameters (n) 1140 rpm, and cutting depth (a) 1 mm produces a vibration value of 2.1 mm / s. However, for the most optimal cutting process, the highest vibration level value is produced, that is, in the cutting process with spindle rotation parameters (n) 215 rpm and cutting depth (a) 3 mm resulting in a vibration value of 3.4 mm / s. From the results of measuring the vibration level, it is obtained that the vibration level value has exceeded the permissible tolerance limit. However, for the influence of machining parameters on the quality of product geometry, results are obtained with the quality of product geometry that is still within the permissible tolerance limits, namely at spindle rotation (n) 1140 rpm. For the results of measuring the quality of product geometry at spindle rotation (n) 60 rpm, 215 rpm and 330 rpm, the quality results of product geometry obtained have exceeded the permissible tolerance limit.
Co-Authors A Halim A. Indriani A. Mardian Abdul Halim Adam - Kamil Admon Dani Anizar Indriani Anizar Indriani Asih, Ia Aswata, Aswata Awang, Muhamad Biantoro, Bambang Dafid Mega Saputra Daisy Ade Riany DAMAYANTI KARINI, NOFITASARI Dani, Admon Daruki Daruki Dedi Suryadi Dedi Suryadi Defi Norita Dhimas Satria Ekasari Ekasari, Ekasari Elva Susanti Emi Pahiba Erny Listijorini Erny Listijorini Euis Nina Saparina Yuliani Evan Haviana Fauzan, Ahmad Fauzan, Ghazi Febriana, Tubagus Hendri Fernando, Very Fransisca Debora Frengki Hardian Gilang Ramadhan Gofur , Muhamad 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 Khaerudin, Dedy Kurnia Nugraha Luh Putu Ratna Sundari Lusiana, Rina Maryani, Edna Mekro Permana Pinem, Mekro Permana Meliana, Dita Mislan N. Kholik Nasril - Nugraha, Kurnia Nugraha, Kurnia Nur Qodri Wijayanto Nurhaedi, Repi Nurlaili Nurlaili Oktavanni, Syahda Dwi Pebriyanto S Putri - Riki Efendi Rispandi Rosyadi, Imron 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 Supomo, Cathoche Uniqua Sutarmadi Sutarmadi Syahril Al Qirom Syaputra, Muhammad Julian Syukril, Ahmed Teuku Mirwan Saputra Tubagus Hendri Febriana 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