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All Journal TEKMAPRO Journal of Industrial Engineering and Management Jurnal Rekayasa dan Manajemen Sistem Industri Rekayasa Mesin Journal of Engineering and Management in Industrial System Journal of Environmental Engineering and Sustainable Technology Proceeding SENDI_U Journal of Mechanical Engineering Science and Technology JAMI: Jurnal Ahli Muda Indonesia International Journal of Mechanical Engineering Technologies and Applications (MECHTA)
Oyong Novareza
Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Automotive Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences

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OPTIMALISASI PERAWATAN MESIN GILINGAN DENGAN PENDEKATAN RELIABILITY CENTERED MAINTENANCE (RCM) II DI PG KREBET BARU I MALANG Yazim, Rahmat; Novareza, Oyong
Jurnal Rekayasa dan Manajemen Sistem Industri Vol. 13 No. 8 (2025):
Publisher : Program Studi Teknik Industri Fakultas Teknik Universitas Brawijaya

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Abstract

Jika membutuhkan abstrak atau isi jurnal silahkan menghubungi author melalui e-mail rahmatyazim1086@gmail.com atau novareza15@ub.ac.id   Dipublikasikan tanggal: 30 Juli 2025
IDENTIFIKASI KESENJANGAN ANTARA STANDAR GOOD MANUFACTURING PRACTICES (GMP) DAN WORK IMPROVEMENT IN SMALL ENTERPRISE (WISE) DENGAN PRAKTIK PRODUKSI KOPI BUBUK DI UMKM HANUMBARA COFFEE Adila, Zantia Philar; Novareza, Oyong
Jurnal Rekayasa dan Manajemen Sistem Industri Vol. 13 No. 8 (2025):
Publisher : Program Studi Teknik Industri Fakultas Teknik Universitas Brawijaya

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Abstract

Jika membutuhkan abstrak atau isi jurnal silahkan menghubungi author melalui adila.pillar@gmail.com atau novareza15@ub.ac.id Dipublikasikan tanggal: 1 September 2025
OPTIMIZATION OF VARIABEL HELIX ANGLE PARAMETERS IN CNC MILLING OF CHATTER AND SURFACE ROUGHNES USING TAGUCHI METHOD Hardinsi, Festo Andre; Novareza, Oyong; Sonief, Achmad As’ad
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 9 No. 1 (2021)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis/2021.09.01.3

Abstract

In the manufacturing industries, the main problem in process of operating CNC milling machine was chatter effect (self-excited vibration) which increases the quality of the surface roughness. In this study is to determine optimal value of parameters for chatter and surface roughness. The chatter measured using accelerometer MPU-6050 with Arduino by software LabVIEW-2019 based on peaks-FFT value and the surface roughness measured by SJ-301 tester. The research parameters like variable helix angle, spindle speed, feed rate, and depth of cut using stainless steel 304 by Taguchi method. The optimum parameters value obtained are variable helix 35/38 degrees, spindle speed 3000 RPM, feed rate 150 mm/min and depth of cut 0.4 mm. Based on ANOVA value, the variable helix angle and depth of cut are found to be significant for chatter and surface roughness. The depth of cut was high contribution by ANOVA chatter by 93.84% and surface roughness by 91.93%.
TAGUCHI EXPERIMENTAL DESIGN FOR ROASTING PARAMETER TO IMPROVE COFFEE POWDER QUALITY Putro, Wisnu Wijayanto; Oktavianty, Oke; Novareza, Oyong; Swara, Suluh Elman; Rachmansyah, Ihram; Ningrum, Nur Afia Tri
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 12 No. 1 (2024)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2024.012.02.2

Abstract

Quality improvement is important to reach customer satisfaction and gain the competitive advantage. This research was using the Taguchi experiment design to obtain a combination of roasting parameters, which could in turn improve the quality of coffee powder. During the roasting process, the acids that were naturally contained in coffee beans were transformed into acetic acid, malic acid, citric acid, and phosphoric acid, which in turn contributed to the coffee’s actual taste. Several key factors contributed to the taste of coffee powders, namely roasting temperature, roasting time, the weight per roasting, and cooling time. The significance factor to improve quality of Robusta coffee powder namely roasting temperature on 185 °C, roasting time in 20 minutes, weight per roasting is 7.5 kilograms and cooling time is 10 minutes. The organoleptic tests of the resulting coffee powders showed an average of 4.93 with regards to consumer rating. The experiment result revealed the optimal setting level that should be applied in the production process of coffee powders for gaining better quality and thus more favourable to consumers.
PENERAPAN METODE FAILURE MODE AND EFFECTS ANALYSIS (FMEA) DAN FAULT TREE ANALYSIS (FTA) SEBAGAI UPAYA PENGENDALIAN KUALITAS PRODUK CACAT PADA PROSES PENGECATAN Saragih, Rivay Yananda; Novareza, Oyong
Jurnal Rekayasa dan Manajemen Sistem Industri Vol. 14 No. 1 (2025):
Publisher : Program Studi Teknik Industri Fakultas Teknik Universitas Brawijaya

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Abstract

Jika membutunkan abstrak atau isi jurnal silahkan menghubungi author melalui e-mail rivay.sagar@gmail.com atau novareza15@ub.ac.id Dipublikasikan tanggal: 29 Desember 2025
INVENTORY CONTROL OF CRITICAL SPARE PART BASED ON FNS ANALYSIS Trisnawati, Niken; Novareza, Oyong; Eunike, Agustina
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 4 No. 1 (2016)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2016.004.01.2

Abstract

Krebet Baru I Sugar Factory is a producer of sugar that operate on the milling season that start from June until November 2015. The problem that occured in the Krebet Baru I were ineffectively and inefficiently spare parts inventory policy that cause stockout and led to production process stoppage. This research used FNS analysis for the classification spare parts and EOQ Probabilistic method for calculation of stockout probability, optimum Q and ROP,  total cost, also service level which were would be compared with existing policy. The research resulted that 44 types of spare parts categorized as urgent, 8 types else categorized as critical. EOQ Probabilistic method was chosen as the best method of control policy, with total cost reduction  by 12%-93% and service level increase by 995-100% than existing policy which resulted a total cost by Rp 5.004.890 – Rp 142.647.057 and service level by 0%-30%. 
RISK ANALYSIS BY COMBINING FAULT TREE ANALYSIS (FTA) AND ANALYTIC HIERARCHY PROCESS (AHP) METHOD APPLICABLE TO CANE CUTTER MACHINE Novareza, Oyong; Revadi, Chindy Elsanna; Efranto, Remba Yanuar
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 5 No. 1 (2017)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2017.005.01.5

Abstract

2000 times of downtime had been occurred during year 2013 to 2014 in Tjoekir sugar factory. The most serious downtime occurred in mill. Fault Tree Analysis (FTA) was employed to analyze the probability score and implement Analytic Hierarchy Process (AHP) to find out impact score of risk event. The results of FTA indicate that risk event in cane cutter blade had the highest probability score, while results of AHP shows that the decrease of steam pressure in turbine drive had the highest impact score. The scores classified in risk class and mapped in risk matrix show that there were three risk events. Tjoekir has to set a conveyor gate to filter canes before being received by the machine, use blades with the thickness not exceed 22 cm to avoid fatigue, and check harvested cane thoroughly that is loaded onto carriers to ensure no machete is accidently loaded with the cane.
CLASSIFICATION OF QUANTITATIVE MODEL SCENARIOS IN A CLOSED-LOOP SUPPLY CHAIN USING UNDERLYING FACTORS AND VARIABLES: A RESEARCH REVIEW Yuliawati, Evi; Pratikto, Pratikto; Sugiono, Sugiono; Novareza, Oyong
JEMIS (Journal of Engineering & Management in Industrial System) Vol 10, No 1 (2022)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/10.21776/ub.jemis.2022.010.01.3

Abstract

In a closed-loop supply chain area, the concept of sustainability is one of the primary factors that motivates companies to survive in a dynamic market. The purpose of this paper is to present a literature review of quantitative models in the remanufacturing process, especially mathematical models such as pricing decisions and cost models, reviewed from various scientific journals. Challenges to meet market demands, to boost efficient operational costs, and to increase profits have made researchers interested in deeply exploring this issue. Studies in the reverse supply chain area ensure that the supply process runs effectively and efficiently, meeting a level that is as good as when implementing the forward supply chain. Coordination and collaboration among companies, core acquisition strategy, model character behavior, and reverse channel structure are some characteristics of the quantitative models within the area of a closed-loop supply chain. Mapping was arranged to identify the involvement of research variables (core acquisition cost and remanufactured product price) and factors that were considered in the mathematical model of core acquisition (quantity and quality). Furthermore, the related literature on the issue was analyzed based on the involvement of the considered variables and factors. Finally, future research opportunities are presented as the result of the conducted literature review in this study.
THE EFFECT OF SIMULATED VERTICAL VIBRATION AND STACKING PATTERN ON QUALITY OF TOMATOES Rayyan, Rayyan; Novareza, Oyong; Sonief, Achmad As'ad
International Journal of Mechanical Engineering Technologies and Applications Vol. 7 No. 1 (2026): January - June
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776//MECHTA.2026.007.01.2

Abstract

Simplification of tomato fruit transportation was applied as the preparation. Three tomato fruit Computer-Aided Design (CAD) geometries had been arranged as the face-centered cubic (FCC), jumble, and traditional patterns. Boundary condition, meshing, and contact were determined to ensure the pattern could be simulated as real as possible. Modal analysis simulation is used to find out the natural frequency and mode shape for each pattern. The result was then extracted for static structure analysis. 5N, 10N, and 15N forces are placed on the top of the fruit pattern. Deformation and normal stress pattern results were analyzed as the reaction when the tomatoes respond to external forces. This research is finding the FCC pattern gives more minimal damage to the fruit.
Co-Authors Abriani, Dea Prilia Achmad As’ad Sonief Adila, Zantia Philar Adjie, Bayu Purwo Adrian, Philip Afifatullaili, Saptarina Nur Afinda, Tatri Fajar Agustina Eunike Agustinus Michael Hartanto Ahmad Taufiq Nashrul Huda Alvin Muhammad ‘Ainul Yaqin Amalia, Meidina Rizky Amanda Safiranisa Ambarwati, Herna Kartika Amelia, Mauli Rizki Andari, Sinta Dahlia Andreas, Andreas Anggi Prasetyanti Bramantia, Anggi Prasetyanti Annisa Carina, Annisa Anwar, Saiful Arif Rahman Arif Rohman Syamsiar, Arif Rohman Arina Isabela Cahyani Attariq Hafidz Ramadhani Aulia, Iqlima Tristy Aulia, Ratri Sinatrya Azlia, Wifqi Azmi, Ahmad Ulul Bagus Prasetyo Basuki, Revardy Al Risyad Budi Santoso, Purnomo Bunga Erisa Deni Ceria Farela Mada Tantrika Chaira, Nurul Umi Chamzie, Muhammad Andika Fahrie Charel, Nicolas Leo Dores Charina, Asfrida Chindy Elsanna Revadi Chindy Elsanna Revadi, Chindy Elsanna Cindy Revitasari, Cindy Danny Prasetya Hartono, Danny Prasetya Darmadi, Djarot Bangun Dasrul, Alvin Rizki Debrina Puspita Andriani Denna, Maria Desi, Monica Natalia Dewi Hardiningtyas Dian Sukoco, Allen Denisyola Diar Nuru Dini, Diar Nuru Dirgantara, Gatut Divara, Arnez Morenno Driyantoro, Mohamad Afif Dwi Hadi Sulistyarini Dwi Sulistyarini, Dwi Erliya Yunita, Erliya Erza Rizky Fathony, Erza Rizky Evana, Nadya Evi Yuliawati Faisal Rahman, Faisal Fanani, Angga Akbar Faturrahman, Anandito Muhammad Festo Andre Hardinsi Firsada, M. Ivan Firta, Daniar Fitria Rumbay, Fitria Fitriani, Dewi Widihandari Gestano Rio Hutama Putera Gita, Sherenia Yuanggra Gunari, Sinar Pratama Gurning, Cicilia Apriana Gustafianto, Ghufron Habriantama, Mahendra Haidar Luthfi Syaifudin, Haidar Luthfi Hapsari, Amalia Kurnia Hardinsi, Festo Andre Hazim, Satria Achmad Hendrastati, Chintya Pralampita Hidayat, Ario Prakoso Hidayatullah, M. Afif Hilmy, Raihan Husaini , Fachri Husnita, Amanda Ihram Rachmansyah, Ihram Ihwan Hamdala Ishardita Pambudi Tama Iswara, Fanda Eka Predia Ivandiaz, Ivandiaz Ivo Dewi Anggraini, Ivo Dewi Izzaturoby, Muhammad Hawary Jamhari, Mohammad Ikhwan Janah, Anisa Nuril Jingga, Senja Sang Kesuma Putri, Indah Ariesanti Khoufi As, Faisol Kurniawan, Herlangga Kurniawan, Roby Lalu Tri Wijaya Nata Kusuma Lilis Yuliati Lodimeda Kini Mafaza, Salsabila Indana Mahaputri, Alfa Izma Mahesa, Krisna Angger Martin, Samuel Marudut Sirait Maulana Abdul Hafish, Maulana Abdul Maulida, Nasti Meilitasari, Saftyanti Ayu Mirsha Ulfatul Haqni, Mirsha Ulfatul Mochamad Choiri Mochamad Triatmoko Alih Suryana, Mochamad Triatmoko Alih Mohamad Izmet, Mohamad Mohamad, Effendi Bin Muhammad Putra Nurdiansyah Muhammad, Rizky Nabila, Asyfa Nahara, Tara Aldania Nasir Widha Setyanto Nehemia Hendry Setiawan, Nehemia Hendry Niken Trisnawati Niken Trisnawati, Niken Nindya Sari Hardyani, Nindya Sari Ningrum, Nur Afia Tri Nirmalasari, Petty Chynthya Nur'aini, Shintya Dwi Nur, Bastian Zamroni Nurhuda, Dwi Septa Oke Oktavianty Oktavianty, Oke Pamungkas, Catur Satrio Pamungkas, Syah Rizal Pangesti, Rahayu Eka Pasca Maulida Nur Rahma, Pasca Maulida Nur Pradikta, Bryan Reyvendra Prakoso, Teddy Aditya Prastuti, Nugky Dyah Pratama, Septiawan Pambudi Pratikto Pratikto Pratikto, Pratikto Pratiwi, Sindi Eka Pribadi, Dhimas Tegar Pangukuhing Puji Wahyuning Wibowo, Puji Wahyuning Purnami Purnami Purnomo Budi Santoso Purnomo, Nabilla Fitra Purwa, Haby Puspitasari, Mita Puspo Rini, Dena Lukmala Dewi Putra, Satya Gyte Aldina Putri Wahyuning Jati, Putri Wahyuning Putri, Meisya Tiara Putro, Wisnu Wijayanto Putro, Wisnu Wijayanto Rachmansyah, Ihram Rahman, Arif Rahmatullah, Madani Rahmawati, Siti Rahmi Yuniarti Rakhmat Himawan Ramadhan, Zulfikar Muhammad Rasyidah Arifi, Rasyidah Ratih Ardia Sari Ratih Utaminingtyas Rayyan, Rayyan Remba Yanuar Efranto Rio Prasetyo Lukodono Riyandhanu, Muhammad Rizaldi, Nizar Prama Rochmana, Siswanto Indra Rochmana, Siswanto Indra Ryan Fardian, Ryan Sakinah, Nurus Sanjaya, Roy Saragih, Rivay Yananda Sarah Fatiyah Sari, Etania Desy Anjar Sentosa, Bryan Febby Septian Rizky Hidayat, Septian Rizky Sherenia Yuanggra Gita Sherva Rafsanjani, Sherva Shodiq Handoko, Shodiq Sidabutar, Sofan Mardiri Singarimbun, Cesilia Putri Sirait, Reinhard Sonief, Achmad As'ad Sonief, Achmad As’ad Sonief, Achmad As’ad Sri Widiyawati Sri Widiyawati Sugiatno, Aprillis Nindy Sugiono Sugiono Sugiono Sugiono Sugiono, Sugiono Sulistijo, Apta Hadyan Suluh Elman Swara Tantri Dwi Wulandari, Tantri Dwi Thirafi, Ahmad Audrey Tuhfah, Riesa Aliya Udin, Misbach Utami, Widya Rahayu Utari, Selli Tri Valencya Leany Haryanto Verly Ardhi Andarta, Verly Ardhi Vindy Triana Putri Wardani, Anggraini Wisnu Wardhani, Angelia Kusuma Wardhani, Angelia Kusuma Waro, Nazilatul Azmil Wicaksono, Adib Wicaksono, Rhesa Haryo Wiradmoko, Randy Wishnu Raynar, Wishnu Yazim, Rahmat Young, Michael Zefry Darmawan Zefry Darmawan