A concept for detecting quality deviation earlier than when using traditional diagram in automotive: a case study

Abstract

The problem addressed in this paper is how to utilise the concept of TQMain to develop an integrated vibration‐based maintenance (VBM) for detecting deviations in the machine condition and product quality (technical specifications) before the machine starts manufacturing defective items. Concepts of TQMain and integrated VBM are discussed. A technical analysis is conducted to identify quality problem cause roots when manufacturing crankshafts in Volvo Motor, Sko¨vde, Sweden. A factorial experiment is conducted to assess the effect and significance of the suspected causes. Vibration measurements from seven points are collected. The major conclusion of this study is: when using an effective, e.g. on the basis of TQMain concept, integrated VBM, deviations in product quality can be detected at an earlier stage than when using usual quality control diagrams. Manufacturing defective items can be reduced dramatically (or prevented), which will eliminate bad quality‐related losses.

Citation

Al‐Najjar, B. (2001), "A concept for detecting quality deviation earlier than when using traditional diagram in automotive: a case study", International Journal of Quality & Reliability Management, Vol. 18 No. 9, pp. 917-940. https://doi.org/10.1108/02656710110407118