Analysis of Defect Causes and Improvement In Cabinet Case Division Using Failure Mode and Effect Analysis (FMEA) and Analytical Hierarchy Process (AHP) (Case Study: Wood Working Department – PT. Yamaha Indonesia)
Abstract
Common problem often found by company in improving product quality is the occurrence of defective product. In the presence of defective products, the company is required to repair those defective products that will have impact on increasing cost, manpower, and time required. Increasing cost, manpower, and time will indirectly result in decreased production efficiency. The goal of this research is developing production process improvement in Cabinet Case division, PT Yamaha Indonesia based on cause of defect to reduce defective product and analysis of it. The method used in this research is Failure Mode and Effect Analysis (FMEA) with supporting tools such as Fishbone diagram and Pareto diagram. FMEA is a method used to identify the root causes of quality problems. However, FMEA often gives the same RPN result, but represents a different risk representation. To solve this problem, weighting of the criteria is carried out using the AHP (Analytical Hierarchy Process) method. Based on the result of Pareto diagram, the most dominant type of defect occur in Cabinet Case division is rift defect, while the most dominant type of cabinet is Fall Back. The factors cause to defect in Cabinet Case division can be divided into 5 factors are material, method, environment, manpower, and machine. Therefore, the proposed alternative that could be conducted by the company, it should pay more attention to scheduling replacement of parts on each machine and assign operator of machine user to be in charge of the machine. Moreover, the company should improve the quality of training for new operator and to tighten the selection also placement of new operator based on their skill and interest.
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- Industrial Engineering [2224]