Jurnal Ilmiah Teknik Industri
Jurnal Ilmiah Teknik Industri is a scientific journal that aims to participate in developing the scientific field of Industrial Engineering, contains the results of research and theoretical study from lecturers, researchers and industry practitioners. Jurnal Ilmiah Teknik Industri is administered by the Department of Industrial Engineering, Faculty of Engineering, Universitas Muhammadiyah Surakarta and published by the Muhammadiyah University Press (MUP).
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766 Documents
DESIGN OF THE PROPOSED IMPROVEMENT TO OVO’S ELECTRONIC MONEY PAYMENT SERVICES IN GRAB ONLINE TRANSPORTATION SERVICES
Swaraswati, Dinnur;
Pujiyanto, Eko;
Hisjam, Muhammad
Jurnal Ilmiah Teknik Industri Vol. 19, No. 1, June 2020
Publisher : Muhammadiyah University Press
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DOI: 10.23917/jiti.v19i1.9035
The advancement of science and technology in the world has brought many influences to the changes in people's behavior and habits, one of that is the technology payment system adopted as an electronic payment system. As an electronic payment instrument, OVO cooperates with one of the online-based transportation services, Grab. However, the success of a company can be seen from the quality of service in meeting the satisfaction of the community or customers. The success of the company in providing quality services can be determined by the Service Quality (Servqual) approach, that is a method used to measure service quality from the attributes of each dimension, so that a gap value will be obtained that is the difference between consumers' perceptions of services that has been received in the hope that will be received. The objective to be achieved is to propose a design in the form of alternative solutions for the priority of improving the quality of electronic money OVO services in Grab applications. Data were collected through a questionnaire using non-probability sampling techniques with a total sample of 140 respondents. The study found the main problems, namely in the dimensions of compensation, responsiveness, and Privacy/Security.
AGGRAVATE OR MITIGATE? HOW COST ANALYSIS ASSOCIATED INTO RISK MANAGEMENT PROCESS
Cahyo, Winda Nur;
Trialopa, Eky Fasich;
Purnomo, Hari
Jurnal Ilmiah Teknik Industri Vol. 19, No. 1, June 2020
Publisher : Muhammadiyah University Press
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DOI: 10.23917/jiti.v19i1.10390
In most researches in the area of risk management, the result stops at proposing the mitigation strategies. The number of researches on associating cost analysis into the risk management process is very limited. This paper proposes a practical process on how cost analysis can be associated into the risk management process especially in the area of manufacturing. The process of the risk management is conducted as usual, started by selecting the potential risk and finding the major causes. Then, a risk map and its rubric of risk likelihood and severity are developed, and the major causes are plotted into it to select the priority of the major causes and the proposed mitigation strategy is developed. Then, the poposed strategy is compared with the current strategy based on the cost generated using the developed equation. The result shows the proposed mitigation strategy is selected because it saves approximately IDR 2 million per order. It indicates that cost analysis can be successfully associated into the risk mitigation process and generates a comprehensive recommendation to the decision maker.
ANALYSIS AND IMPROVEMENT OF ASSEMBLY LINE: A CASE STUDY AT AUTOMOBILE REAR-AXLE ASSEMBLY LINE-A PT. ZYX
Larasari, Prasti Amanda;
Tanaya, Prianggada Indra;
Indrayadi, Yuki
Jurnal Ilmiah Teknik Industri Vol. 19, No. 1, June 2020
Publisher : Muhammadiyah University Press
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DOI: 10.23917/jiti.v19i1.8866
This paper explains the improvement of PT ZYX's productivity on the assembly line-A, using the production line balancing method. Four methods of line balancing were examined, namely, Ranking Positional Weight (RPW), Region Approach, J-Wagon and Kaizen. The selection of the most suitable method is made based on the reduction of number of workstation and cycle-time. Based on the result. Kaizen method shows better total cycle time, number of workstation, and number of operator required. This result is simulated using the 'Tecnomatix' software with the DES (Discrete Event Simulation) method.
INTERPRETIVE STRUCTURAL MODELING AND HOUSE OF RISK IMPLEMENTATION FOR RISK ASSOCIATION ANALYSIS AND DETERMINATION OF RISK MITIGATION STRATEGY
Natalia, Christine;
Br. Hutapea, Yulitari Flora Theresa;
Oktavia, Chendrasari Wahyu;
Hidayat, Trifenaus Prabu
Jurnal Ilmiah Teknik Industri Vol. 19, No. 1, June 2020
Publisher : Muhammadiyah University Press
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DOI: 10.23917/jiti.v19i1.9014
The increasingly fierce industry competition causes each company needs strong supply chain activities as part of the company to be able to survive in an environment full of competition. In carrying out supply chain activities, it is certainly inseparable from supply chain risks that can disrupt supply chain activities. In supply chain risk it is important to know the key risks as the risks that trigger the other risks in the supply chain. This study aims to identify the relationship of risk and mitigation to reduce the causes of the risk. The interpretive structural modeling (ISM) approach is applied to solve problems related to risk linkages and produced key risks which are the risks that most influence the occurance of other risks. The key risks obtained are then processed using the house of risk (HOR) approach to determine the priority of risk mitigation actions. ISM result obtained four key risks, namely the risk element of inputting data error when entering the number of goods and spesifications, product spesification errors desired by the customer, frequent changes in customer design requests and revisions to the design drawings. Then the result of the HOR method obtained four recommended priority mitigation actions, namely updating information on a scheduled basis, conducting briefings every day before work, coordinating and reconfirming requests for product spesifications, and implementing more strigent worker selection procedures. The linkage of the causes of risk, the validation of the ISM model statistically and the weighting of the triggered criteria are several aspects that further research is needed.
ANALYSIS OF SITUATIONAL AWARENESS FOR ONLINE TAXIBIKE DRIVER IN YOGYAKARTA USING QUASA ANALYSIS
Ma'ruf, Farid;
Jatmiko, Hapsoro Agung
Jurnal Ilmiah Teknik Industri Vol. 19, No. 1, June 2020
Publisher : Muhammadiyah University Press
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DOI: 10.23917/jiti.v19i1.10402
Online taxibike servicehas its own charm because it is a new breakthrough for current conditions that make it easy for consumers to order a vehicle. Riding a motorcycle is an activity that requires awareness against road conditions that are dynamic and can change in seconds. This study aims to determine the level of awareness of online taxibikedriver when using a GPS and non GPS. The method used in this research is the QUASA method which combines the probing method in the situational awareness process with the self rating method. The results of data processing obtained that the value of actual accuracy and perceived accuracy when online taxibikedriver uses a GPS is greater than non GPS. In addition, other results stated that the level of awareness of online taxibikedriver when using a GPS was 4.7% greater than when without non GPS.
Six Sigma as a Method for Controlling and Improving the Quality of Bed Series Products
Untoro, Octa Bimansyah;
Iftadi, Irwan
Jurnal Ilmiah Teknik Industri Vol. 19, No. 02, December 2020
Publisher : Department of Industrial Engineering Universitas Muhammadiyah Surakarta
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DOI: 10.23917/jiti.v19i2.11623
The research was conducted at PT. XYZ where there were defect problems in bed series products so that additional time is needed to repair a product. One way to make improvements and improve quality in a production process is the Six Sigma method with the stages of DMAIC. The results of the calculated average of DPMO values and Sigma Level have the result 58558.56 and 3.07 which are still not good because still far from 6 sigma. After that analyzing the root causes of defect product problems, then the priority problem is carried out using (RPN) where the highest value is at the assembly work station because the material that has been used up in the warehouse has an RPN of 405 so that it becomes a top priority for repairs. With the standardization and documentation, proposed improvements that have been given then the possible defects of Electric Lovina Bed 3 Motor will be reduced.
Factors Affecting The Implementation of Green Procurement: Empirical Evidence from Indonesian Educational Institution
Masudin, Ilyas;
Summah, Bangalie;
Zulfikarijah, Fien;
Restuputri, Dian Palupi
Jurnal Ilmiah Teknik Industri Vol. 19, No. 02, December 2020
Publisher : Department of Industrial Engineering Universitas Muhammadiyah Surakarta
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DOI: 10.23917/jiti.v19i2.10718
This paper reported the factors affecting the adoption of green procurement in Indonesian educational institutions. A quantitative method is used to understand the effects between variables on green procurement implementation. Data from respondents working on the divisions of procurement from higher degree institutions in the province of East Java Indonesia are collected in this study. The results were indicated that there are no significant effects on middle management staff, awareness, and corporate responsibility on the implementation of green procurement on educational institutions. At the same time, there is a significant impact of green supply approaches such as ISO certification and eco-design product strategy on the adoption of green procurement.
Understanding Behavior of Household Food Waste Management: Food Waste Hierarchy Context
Ariyani, Luthfina;
Ririh, Kirana Rukmayuninda
Jurnal Ilmiah Teknik Industri Vol. 19, No. 02, December 2020
Publisher : Department of Industrial Engineering Universitas Muhammadiyah Surakarta
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DOI: 10.23917/jiti.v19i2.11994
The determinant factor identification of behavior considers as an important means in order to develop effective intevention towards household waste management in Indonesia. This study extended the Theory of Planned Behavior (TPB) by using the following construct: intention, attitude, subjective norm, perceive behavioral control, government intervention, environmental knowledge and awareness, as well as household planning and buying habit; to understand household waste management behavior from the ‘reduce-reuse-recycle’ point of view. The structural equation modeling (SEM) were used in this study and the result showed that the model accounted for relatively substantial amount (61.7%) of the variance in intention, with the attitude, subjective norm, and environmental knowledge and awareness emerge as significant predictor. Above findings could be used by both governmental and non-governmental organization to formulate strategies to manage food waste at the household level.
Maintenance Cost Analysis Using Cost of Unreliability (COUR) Method with Business Consequence Analysis : A Case Study of Shot Blast Machine
Salsabila, Jasmine Raisya;
Atmaji, Fransiskus Tatas Dwi;
Pamoso, Aji
Jurnal Ilmiah Teknik Industri Vol. 19, No. 02, December 2020
Publisher : Department of Industrial Engineering Universitas Muhammadiyah Surakarta
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DOI: 10.23917/jiti.v19i2.11961
Losses caused by unreliable machines in a production line will affect the total cost losses from a manufacturing company's production process. Based on historical data of damage that has been obtained from the maintenance department of XYZ companies, the MACH MWJ 9/10 Shot Blast Machine is the machine that has the highest-level frequency of damage. This machine is useful for cleaning sand or residual production dirt that sticks to workpieces that have been cast in the casting process, especially for E-Clips components. The research's purpose is to determine the value of cost losses due to machine unreliability using the Cost of Unreliability (COUR) method, with Business Consequence analysis (BC) analysis. The cost effects of these costs include Corrective COUR and Downtime COUR. The final calculation of COUR shows that the total cost of COUR Downtime caused by the unreliability of the machine is greater than the total Corrective COUR. After calculating the COUR, an analysis of the business consequences resulting from the machine's unreliability is carried out using a risk matrix. The analysis results show that the shot blast machine's critical components are in the red or high-risk category and have a very high Probability of Failure (PoF). The results of COUR analysis with business consequence analysis will be an input for the company to make a machine maintenance system policy, especially for the MACH MWJ 9/10 Shot Blast machine's critical components. In general, this research's novelty is to combine the application of the Cost of Unreliability method with an analysis of the effects of the Business Consequence caused by the machine's selected critical components.
Consolidation Model Recommendation for Rice Distribution in Indonesian Bureau of Logistics (West Java Regional Division)
Setiawan, Fran;
Pratiwi, Loren;
Wigono, Elisa Ferdilia
Jurnal Ilmiah Teknik Industri Vol. 19, No. 02, December 2020
Publisher : Department of Industrial Engineering Universitas Muhammadiyah Surakarta
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DOI: 10.23917/jiti.v19i2.11908
BULOG (Indonesian Bureau of Logistics) Regional Division West Java is a state-owned public company that regulates and maintains a supply of rice in order to meet the needs of all Indonesian people. Currently, BULOG distributing rice from one SubDivre warehouse to another SubDivre warehouse (point-to-point system) so shipping costs are higher because the frequency of transportation used is higher and the total distance traveled is higher. To reduce the cost of distribution, we propose consolidation model based on hub and spoke network topology. Hub and spoke system is done by determining which points become the hubs and which points become the spoke. The problem in determining the location of the hub and spoke is known as the hub location problem. In this problem, single allocation p-hub median problem is used. We use AMPL to get the solution. Various number of hubs (5,6,7) are tested and evaluated based on total shipping cost. The number of hubs which gives the minimum total shipping cost is 7. Delivery system using the hub and spoke network model can reduce the total cost of distribution by 13,94%.