Defect Rate Analysis of the Brake Component using Statistical Approach

Abstract

A brake is an essential mechanical device used to slow down the motion of a vehicle, so the quality of the brake is more important. This work objective is to improve the quality of the disc brake component by minimizing the number of defects during production. The manufactured disc brake has over 20 manufacturing defects which increases rework in the production unit. Here the statistical approach is used to analyze the rejection rate for the 20 different manufacturing defects in the production unit. Analysis of the rejection component for 20 manufacturing defects is carried out using the ANOVA test, chi-square test, and Regressive test is done to find the difference between the observed and expected rejected components for the various manufacturing defects. Then the causes for the manufacturing defect are analyzed using a Pareto chart. By, this Pareto chart analysis the exact reason for the manufactured disc brake will be studied. This investigation makes the organization unit focus on the area where the defect rate can be reduced. This statistical study makes the manufacturing unit identify the key reason for the 20 different defects in their production. Also, this defect rate minimization helps them to produce defect less quality disc brakes to retain their customers in future.