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INDONESIA
Journal of Engineering and Management in Industrial System
Published by Universitas Brawijaya
ISSN : 23383925     EISSN : 24776025     DOI : -
Core Subject : Engineering,
Industrial & Manufacturing Engineering
Journal of Engineering and Management in Industrial System is a peer reviewed journal. The journal publishes original papers at the forefront of industrial and system engineering research, covering theoretical modeling, inventory, logistics, optimizations methods, artificial intelligence, bioscience industry and their applications, etc.
Arjuna Subject : -
Articles 8 Documents
 1 
Search results for , issue "Vol 8, No 2 (2020)" : 8 Documents clear
THE EFFECTS OF r-HDPE/r-PP FORMULATION RATIO INTO MECHANICAL, THERMAL AND MORPHOLOGICAL BEHAVIOR OF r-HDPE/r-PP POLYMERIC BLENDS Jeefferie Abd Razak; Siti Zaleha Wahid; Noraiham Mohamad; Poppy Puspitasari; Rosidah Jaafar; Pindo Tutuko
Journal of Engineering and Management in Industrial System Vol 8, No 2 (2020)
Publisher : Badan Penerbit Jurnal, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2020.008.02.1

Abstract

This study has reported the effects of different formulation ratio between recycled high density polyethylene (r-HDPE) and recycled polypropylene (r-PP) into the resulted mechanical, thermal and morphological properties of r-HDPE/r-PP polymeric blends. About five (5) different formulation ratio of r-HDPE/r-PP have been prepared and tested. The best combination ratio between r-HDPE and r-PP was determined in this work. It was found that the 70/30 wt.% of r-HDPE/r-PP blend possessed an outstanding mechanical and physical strength. About 59.80% and 2.30% of positive improvement in comparison to 0/100 wt.% of r-HDPE/r-PP was achieved for both of tensile strength and hardness, respectively. Interestingly, for 70/30 wt.% of r-HDPE/r-PP blend had also experienced major increased in their elongation at break up to 473%. The fracture morphological behavior of the tested samples that were observed via SEM observation, had established the interaction between the structure and properties of produced r-HDPE/r-PP blends, especially on the miscibility state between the r-HDPE and r-PP phases. Thermal evaluation by using the DSC had confirmed the partial miscibility state due to dominant peak shifting at 120 - 140°C and obvious melting peak reduction pattern. Overall, from this study, it was found that the blending between r-HDPE and r-PP into r-HDPE/r-PP blends are feasible to improve the properties of primary phase.
THE EFFECTS OF r-HDPE/r-PP FORMULATION RATIO INTO MECHANICAL, THERMAL AND MORPHOLOGICAL BEHAVIOR OF r-HDPE/r-PP POLYMERIC BLENDS Razak, Jeefferie Bin; Wahid, Siti Zaleha; Mohamad, Noraiham; Puspitasari, Poppy; Jaafar, Rosidah; Tutuko, Pindo
Journal of Engineering and Management in Industrial System Vol 8, No 2 (2020)
Publisher : Badan Penerbit Jurnal, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2020.008.02.1

Abstract

This study has reported the effects of different formulation ratio between recycled high density polyethylene (r-HDPE) and recycled polypropylene (r-PP) into the resulted mechanical, thermal and morphological properties of r-HDPE/r-PP polymeric blends. About five (5) different formulation ratio of r-HDPE/r-PP have been prepared and tested. The best combination ratio between r-HDPE and r-PP was determined in this work. It was found that the 70/30 wt.% of r-HDPE/r-PP blend possessed an outstanding mechanical and physical strength. About 59.80% and 2.30% of positive improvement in comparison to 0/100 wt.% of r-HDPE/r-PP was achieved for both of tensile strength and hardness, respectively. Interestingly, for 70/30 wt.% of r-HDPE/r-PP blend had also experienced major increased in their elongation at break up to 473%. The fracture morphological behavior of the tested samples that were observed via SEM observation, had established the interaction between the structure and properties of produced r-HDPE/r-PP blends, especially on the miscibility state between the r-HDPE and r-PP phases. Thermal evaluation by using the DSC had confirmed the partial miscibility state due to dominant peak shifting at 120 - 140°C and obvious melting peak reduction pattern. Overall, from this study, it was found that the blending between r-HDPE and r-PP into r-HDPE/r-PP blends are feasible to improve the properties of primary phase.
ANALYSIS ON THE PURCHASING DATA TO RE-DESIGN THE PROCEDURE OF TURNAROUND MAINTENANCE Winda Nur Cahyo; Buchairi Zaman
Journal of Engineering and Management in Industrial System Vol 8, No 2 (2020)
Publisher : Badan Penerbit Jurnal, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis/2020.008.02.2

Abstract

Turnaround (TA) is a large-scale maintenance activity (extraordinary maintenance activities), which is carried out periodically (repeated large-scale maintenance), where the work referred to can only be carried out when the unit is stopped operating. The main scope of work is inspection (inspection), repair, cleaning equipment. The success or failure of turnaround activities is very influential from careful preparation, some of the failures of turnaround activities result from unplanned preparations. One factor is the readiness of the material. This paper discusses the direct involvement of the material procurement process in determining better TA preparation time. The historical data from the purchasing is analyses and then the result is combined with the new proposed procedure of the TA maintenance. The new procedure has three months less than the current procedure.
ENVIRONMENTAL SUSTAINABILITY ASSESSMENT OF SUGARCANE INDUSTRY USING LIFE CYCLE ASSESSMENT Galuh Zuhria Kautzar; Ishardita Pambudi Tama; Yeni Sumantri
Journal of Engineering and Management in Industrial System Vol 8, No 2 (2020)
Publisher : Badan Penerbit Jurnal, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis/2020.008.02.5

Abstract

The sugarcane industry is one of the industries that generated negatives impact on the environment. Therefore, it can be concluded that the sugarcane industry is not environmentally sustainable. The results of this research show that the use of electricity from bagasse cogeneration becomes the main contributor to all of damage categories. Meanwhile, the highest contribution to damage categories is human health with a total score of 59%. The results of this research are expected to reduce the environmental impact produced by PT. X so that PT. X will be more environmentally sustainable.
DEVELOPMENT OF BUSINESS STRATEGIES USING QSPM AND SWOT ON SNAIL CHIPS Lolyka Dewi Indrasari; Silvi Rushanti Widodo
Journal of Engineering and Management in Industrial System Vol 8, No 2 (2020)
Publisher : Badan Penerbit Jurnal, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2020.008.02.7

Abstract

Strategy in the snail chips business is the topic of this research. The purpose of this study is to determine the position of the company based on the SWOT results and the sequence of alternative strategies found on QSPM. The stages of this research were to make observations at PT.X to determine the strengths, weaknesses, opportunities, and threats of the snail product. The results obtained by the company lie in quadrant II with a suitable strategy to increase resistance to reduce the danger that comes, while the order of the choice of method is first to strengthen cooperation with new collectors, second to improve quality better than competitors, third to plan delivery schedules if the volume of demand increases. Suggestions that can be used by related companies are implementing alternative strategies on an ongoing basis and periodically evaluating them.
ANALYSIS ON VOLUMETRIC SHRINKAGE OF PLASTIC FOOD CONTAINER MADE FROM AN INJECTION MOLDING PROCESS Rosidah Jaafar; Hambali Arep; Effendi Mohamad; Jeefferie Abd Razak; Muhamad Arfauz A Rahman; Rahmi Yuniarti
Journal of Engineering and Management in Industrial System Vol 8, No 2 (2020)
Publisher : Badan Penerbit Jurnal, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis/2020.008.02.3

Abstract

The plastic injection molding process is one of the widely used of the manufacturing process to manufacture the plastic product with high productivity.  Moreover, the food packaging manufacturing industry undergoes the trials and errors to obtain the optimal setting of the process parameters in order to minimize the quality issues and these trials and errors are time consuming and costly.  The aim of this study is to improve the quality of the butter tub by minimizing the volumetric shrinkage. This study is to deal with the application of Moldflow integrating with the statistical technique to minimize the volumetric shrinkage the butter tub which depends on the process parameters of the plastic injection molding.  For this purpose, the rectangular shape of butter tub is designed by utilizing the SolidWorks.  Molflow is used to simulate the plastic filling of the single cavity mold of butter tub based on the Taguchi’s  orthogonal array table.  In addition, the analysis of variance (ANOVA) is applied to investigate significant impact of the process parameters on the quality of the butter tub. Minitab is used to optimize the response of the volumetric shrinkage by selecting the most appropriate process parameters that maximizing the desirability value.  Furthermore, the butter tub has a uniform thickness which was 1.2 mm and its factor of safety was 3.383 and the volumetric shrinkage response have optimized by 0.956 %. The melt temperature and mold temperature are found to be the most significant process parameters for the plastic injection molding process of butter tub and the volumetric shrinkage value obtained from the simulation is verified by the calculated volumetric shrinkage value.
STATISTICAL PROCESS CONTROL IMPLEMENTATION AS EARLY WARNING SIGNAL FOR SAFETY INTERVENTION IMPROVEMENT AT MINING OPERATION Arya Nugraha; Gatot Yudoko
Journal of Engineering and Management in Industrial System Vol 8, No 2 (2020)
Publisher : Badan Penerbit Jurnal, Faculty of Engineering, Universitas Brawijaya

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

Abstract

As the frequency, severity, and costs of safety risks continue to become a challenge for mining industry, the company understood that the existing safety analytic does not provide adequate information, as it has been relying predominantly on collecting and evaluating aggregated data of lagging indicators about past accidents. This method has been negatively driving the organization to carry out repetitive cycle of accident analysis and problem solving, and therefore, undertaking reactive responses. This paper investigated how statistical process control, in particular control charts, can be applied to hazards data, as the leading indicator of accidents, to detect statistically trends in safety process and safety behavior, aiming to control the safety process in real-time manner before the occurrence of accidents. The result showed that the latest iteration of control limits development in Phase 3 is suitable as the control chart for safety process in one of case study mine operation site. Furthermore, the implementation of control charts to hazards data not only it helps the organization to transition its safety analytic to leading indicator analysis, it enables the organization to control safety process in real-time practice and to carry out timely safety intervention long before the potential occurrence of severe accidents, in which within this case, the first early warning signal was triggered 49 days before the occurrence of the fatality accident.
SIMULATION OF COAL HANDLING PLANT TO SUPPORT THE STABILITY OF COAL SUPPLY DANANG KUSMIWARDHANA; Sugiono Sugiono
Journal of Engineering and Management in Industrial System Vol 8, No 2 (2020)
Publisher : Badan Penerbit Jurnal, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2020.008.02.6

Abstract

PLTU PJB UPJ O&M Paiton is a steam power plant which uses coal as a fuel Coal Handling Plant. It is an important unit to control coal supply. Recently, PLTU PJB UPJ O&M Paiton uses coal from many suppliers. That suppliers can be devided in two qualities based on they calorific values, which low rank and high rank. Multi supplier can affect instability of boiler performance if the coal supply to boiler didn’t managed properly. The blending process between high rank coal and low rank coal had been done to solve that problem, but unwanted mixing between supplier still can be happened if there is not proper management in the coal yard.The solution offered to solve the problem is by making design lost to district from actual system, So that, it is necessary to ascertain how the impact of lost to system in CHP. Simulation method is used to know that impact. The simulation is done with EXTEND6TM software by modeling the components of the existing  CHP system.

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