An Application Of Sampling Method For Quality Control : Case Study On Roller Manufacturing Industry

Lee, Pei Chen (2009) An Application Of Sampling Method For Quality Control : Case Study On Roller Manufacturing Industry. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This report discussed the important of applying Sampling Method for quality control in ABC roller manufacturing industry. The purpose of this study is to identify the current weakness of 100 percent inspection applied in quality control in ABC Company and to propose a sampling plan that may improve ABC Company performance and customer satisfaction. The methodology of this study is conducted through the data collections that taken in industry based on the whole year QC reports in 2008. All the data collection taken is in attributes type, so this study is conducted by using the step-by-step procedure of Military Standard 105E (MIL STD 105E). There are a few of inspection tables to be used to support each step in the procedure. Results gains are analyzed in three categories of single sampling plan: normal inspection, tightened inspection and reduced inspection. Other than that, performance for each type of sampling methods also analyzed in an operating characteristic (OC) curve. From the result findings, a suitable sampling method is being chosen to improve the performance in quality inspection. In the end of this study, benefits and the limitations of sampling method are discussed. Other than that, some recommendations for future improvement and further explore in inspection operation are also discussed.

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