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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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Integrasi Lean dan Green Manufacturing Untuk Mengurangi Pemborosan Proses Rekrutmen Karyawan Pada Industri Manufaktur di Indonesia Hibarkah Kurnia; Indra Setiawan; Hernadewita Hernadewita
Jurnal Rekayasa Sistem Industri Vol. 11 No. 2 (2022): Jurnal Rekayasa Sistem Industri
Publisher : Universitas Katolik Parahyangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2307.199 KB) | DOI: 10.26593/jrsi.v11i2.5608.145-156

Abstract

Recruitment is the process of selecting a candidate to be part of the organization. The recruitment process in every manufacturing industry mostly starts from making advertisements to the skills training process. The recruitment process that occurs in the Pro Audio (PA) manufacturing industry is a long Lead Time (LT) and Process Time (PT) and the presence of paper waste reaches 191.6 kg per month. The purpose of this study is to reduce the LT of the recruitment process in the PA industry and reduce paper waste to give full attention to environmental sustainability in the manufacturing industry. The method used to overcome the impact on environmental problems caused by the industry is the Integration of Lean Manufacturing (LM) and Green Manufacturing (GM). The results showed that the LT of recruitment decreased from 17.9 days to 16.4 days or there was a decrease in the ratio of 8.37%. Waste paper (application file) can be eliminated from 191.6 kg/month to 0 kg/month. PT decreased from 76.21 hours to 74.20 hours decreased by 2.63%. The results of this study have a positive impact on the PA industry towards green manufacture because it can reduce paper waste that can pollute the environment.
THE CAUSE AND EFFECT ANALYSIS IN PRINTING MACHINE PROCESS OF THE MANUFACTURE OF CONTACT RUBBER SILICONE Hendra Hendra; Yaman Parid; Hernadewita Hernadewita; Singgih Juniawan; Teuku Mirwan Saputra; D. Daruki
Jurnal Teknologi Vol 15, No 1 (2023): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.15.1.141-150

Abstract

The automotive industry is a key pillar of the global economy. At present, the level of public needs is high in the field of motor vehicle equipment and components, the automotive world continues to experience competition and quality problems in its growth. This paper describes a project carried out by an automotive component industry company, to analyze the problem of reducing product defects in the contact rubber silicone printing process. Problems occur in the printing process such as product malfunction, poor appearance, and incorrect shape. The data before the repair was taken from January 2021 to August 2021. After analyzing and making improvements with the Six Sigma method approach, the result was a decrease in defective products seen in September 2021 - April 2022 with a decrease in defective products from 18,088 pcs to 211 pcs or 3.9 sigma to 5.2 sigma. The results of the analysis found that the cause of the problem occurred at the level of the ink print in the container which was less than 6 millimeters. The problem was fixed by installing the sensor as mistake-proofing. So that it can increase the company's profit due to the decrease in product failure.
PRODUCTION CAPACITY PLANNING BASED ON SALES FORECAST USING CUT AND TRY METHOD Hernadewita Hernadewita; Hendra Hendra; Dafid Mega Saputra; D Daruki; Singgih Juniawan; Uti Roysen
Jurnal Teknologi Vol 15, No 1 (2023): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.15.1.81-86

Abstract

Companies based on FMCG (Fast Moving Consumer Goods) need to increase productivity and improve efficiency in order to stay afloat to keep pace with the increasing prices of food raw materials as a result of global security geopolitical conditions and drastic changes in climatic conditions. One of the affected is PT. DUS produces the basic ingredients of fast food. The purpose of this study was to determine the most efficient production planning option in order to reduce the company's costs. The methods used in this research are Exponential Smoothing Method, Linear Programming Method, and Mean Absolute Percent Error (MAPE) Method for Forecasting; The Economic Quantity Order method includes the determination of Safety Stock and Re-Order Point to determine the amount of Inventory, and the Aggregate Planning Cut and Try Method to determine production capacity with minimum costs. The results showed that the production plan with options for constant labor plans, constant inventory, and overtime resulted in a cost of Rp. 549,840,000.00 while the constant labor plan options, variations in inventory, and running out of inventory result in a cost of Rp. 1,548,350,000.00.
ANALISIS PENINGKATAN WAKTU PELAYANAN PRODUKSI KENDARAAN BERMOTOR RODA DUA PADA PERUSAHAAN MANUFAKTUR Hernadewita Hernadewita; Hendra Hendra
Jurnal Teknik Mesin Vol 1 No 2 (2004): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

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

Abstract

The consumption motorcycle is the high. This is because people need the transportation and which the transportation cost expensive (by Bus, Car). For the consummate to need people a motorcycle, manufacturing company to production motorcycle, to make product with low cost and fast cycle time. This is doing with the large production area or new fabrication. With the improve a cycle time is the design to automatic system production example: to make use of AGV, Escalator, Lift etc, can be minimize to cost production and large production area. Results the calculated, the minimize cycle time and its time can be use for area shipping.
Analysis of the quality of the shredder plastic machine depend on variations in material plastic types and dimensions using the Taguchi Method Hendra Hendra; Nur Qodri Wijayanto; Sidik Susilo; Erny Listijorini; Hernadewita Hernadewita
Jurnal Teknika Vol 19, No 1 (2023): Available Online in June 2023
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v19i1.21940

Abstract

The problem of plastic waste is critical things because everybody still often uses plastic for various daily needs. Therefore, recycling is considered very important to overcome these problems, including using a plastic chopping machine. The types of plastics used in this research are HDPE, PE, and PP plastics with experimental methods and the Taguchi method to determine the effect of plastic variations, the dimensions of the chopped results, and the percentage value of the contribution of the test variables to the plastic chopping machine. The results obtained in the study are that all types of plastics can be adequately chopped, with the optimum size for PP plastic being 6,8 x 4,5 mm with a processing time of 91,5 seconds. For PE, it is 16 x 10. 5 mm with a processing time of 170.6 seconds. While for HDPE, it is 68 x 34.5 mm with a processing time of 251.1 seconds. These results follow those obtained using the Taguchi method, with a contribution percentage of 77 % for the variable type of plastic followed by dimensions, weight, and thickness.   
MEASUREMENT OF VIBRATION LEVELS AND GEOMETRIC QUALITY OF RECONDITIONED LATHE PRODUCTS WITH VARIATIONS IN BASIC MACHINING ELEMENTS Hendra Hendra; Admon Dani; Dedi Suryadi; 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.
Analisa Tegangan pada Desain Empat Mata Potong untuk Mesin Pencacah Plastik Menggunakan Metode Elemen Hingga Hendra Hendra; Syahril Al Qirom; Sidik Susilo; Kurnia Nugraha; Hernadewita Hernadewita; Frengki Hardian
Jurnal Teknik Mesin Vol 16 No 2 (2023): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.16.2.1245

Abstract

Excessive use of plastic materials eventually causes problems related to the accumulation of plastic waste. One way to deal with plastic waste is to crush it into smaller pieces using a plastic chopper machine. The purpose of this research is to redesign the cutting blade of the crushing machine by varying the thickness of the cutting blade, the number of cutting blades of the crushing machine, and varying the cutting tooth material to get maximum stress and displacement [1-3]. From previous research it was shown that stress and deformation occurred at the number of 2 and three cutting chisel blades [1-2] and the tilt position of 4 cutting chisel blades [3]. In this research uses simulation the finite element method by a solid work design application. The thicknesses variations are 5 mm, 7 mm, and 10 mm and the number of cutting blades amounting four. The number of cutting blades used is four because of the simple design and able to carry out more cutting processes. The materials used are AISI 1045, HSS 18%, and JIS SKD 11. From the results is the recommended material thickness is 10 mm because it is able to accept less stress than 5 mm and 7 mm. The results in terms of the mechanical strength of the simulation state that all are safe to use. If it is based on mechanical strength, the recommended material is AISI 1045 coMPared to 18% HSS STEEL and JIS SKD 11. However, from economic factors, 18% HSS is a recommendation to be chosen as a cutting tooth material.
Minimizing Production Costs Through Aggregate Production Planning with Compromise Strategy in the Food Industry Saputra, Dafid Mega; Hernadewita, Hernadewita; Hendra, Hendra
Jurnal Teknologi Vol 16, No 2 (2024): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.16.2.179-186

Abstract

The food industry is required to carry out production efficiency by minimizing production costs and maintaining competitiveness in the market. One approach that has proven effective in optimizing the production process is through the application of aggregate production planning. This research aims to design a compromise production planning strategy by considering various factors that influence production costs in the food industry, achieve efficiency, and reduce production costs significantly. This research uses an aggregate production method through a compromise strategy model approach to order data for a year. The research results showed that there were two production planning alternatives, namely the first alternative is variable constant labour with overtime, required additional production costs of IDR 338,080,241, while the second alternative is workforce variations, required additional production costs of IDR 301,229,167. The second production alternative can be chosen to be implemented in production planning due to it requires lower costs. Through this study, it is expected that it can provide a valuable contribution to practitioners and academics in understanding the important role of aggregate production planning in achieving production cost efficiency goals in the food industry
Peningkatan Produktivitas Proses Produksi Seal dengan Perbaikan Tata Letak (Relayout), Kaizen dan Lean di PT. XYZ Sarjono, Sarjono; Gofur , Muhamad; Hernadewita, Hernadewita
Metrik Serial Teknologi dan Sains Vol. 4 No. 1 (2023): Februari 2023
Publisher : Konsorsium Cendekiawan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51616/teksi.v4i1.425

Abstract

Produktivitas merupakan hal yang paling penting dalam suatu perusahan manufacturing khususnya di line produksi. Faktor yang mempengaruhi tingkat produktivitas di line produksi salah satunya adalah tata letak (lay out) mesin dan jarak antara mesin sehingga memudahkan pergerakan operator. Penelitian dilaksanakan pada perusahaan automotive dan bertujuan untuk menaikan produktivitas pada line produksi seal. Penelitian ini berfokus pada rendahnya produktivitas pada line produksi yang disebabkan karena kondisi tata letak (lay out) mesin yang cenderung sempit. Sehingga menyebabkan pemborosan waktu karena gangguan saat proses handling dan saat terjadi set up dan mold wash. Hal ini menyebabkan rendahnya produktivitas di bawah target optimal yang diinginkan perusahaan. Perbaikan produktivitas dilakukan dengan menggunakan konsep kaizen dan lean untuk memperbaiki lini produksi pada proses tersebut. Dengan mengaplikasikan konsep kaizen dan lean ditemukan kekurangan-kekurangan pada proses sebelum dilakukan perbaikan penyebab rendahnya produktivitas, setelah dilakukan perbaikan dengan mengaplikasikan konsep kaizen dan lean didapatkan hasil peningkatan produktivitas sebesar 25% dari produksi sebelumnya 506 pcs/man/hari, menjadi 635 pcs/man/hari. Penelitian ini membuktikan bahwa penggunaan konsep kaizen dan lean terbukti efektif dalam meningkatkan produktivitas secara signifikan.
Manufacturing Process of Cutting Edge of Shredder Plastic Machine Using Material Mild Steel Hendra, Hendra; Oktavanni, Syahda Dwi; Rosyadi, Imron; Haryadi, Haryadi; Yusuf, Yusvardi; Ula, Shofiatul; Nugraha, Kurnia; Lusiana, Rina; Hernadewita, Hernadewita
FLYWHEEL : Jurnal Teknik Mesin Untirta Vol 10, No 1 (2024): April
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v10i1.25498

Abstract

Plastic waste is a type of waste that is difficult for the soil to decompose and of course its volume increases all the time, however we still need plastic in our daily lives for various needs, for this we need tools that are able to recycle plastic so that it can be reused and become more valuable material. In recycling plastic waste, plastic shredding machines are used to chop plastic waste with various types of cutting edges, various manufacturing methods and various types of chopped products that are formed later. The aim of this research is to recreate or manufacture plastic chopping cutting edges by testing PET plastic chopping with different masses, by manufacturing using a hand grinder as the cutting tool. On a PET type plastic cup with a mass of 20 grams, it took 215 seconds to produce a chop with the smallest dimensions, namely 1mm – 6.35mm. With the cutting blade that has been made, it can chop PET type plastic with the smallest dimensions possible.
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