Paper Title:
Body Welding Quality Control Based on a CUSUM Control Chart
  Abstract

Aiming at the situation in some Chinese auto companies that the workload of body welding quality inspection is high and the sample size is extremely small, a brand-new CUSUM Control Chart for variance monitoring is proposed in the paper to realize the effective quality control in body welding variance, whose principle is to use variance statistics based on Queensberry transformation Φ-1(G((n-1) St2/σ02)) to monitor infinitely small variances in the process of body welding. Evaluation instance results show that, compared with traditional CUSUM control chart, EWMA control chart and weighted CUSUM control chart, the proposed CUSUM control chart based on variance monitoring is more sensitive to the abnormal variation fluctuation and can detect the abnormity of quality variation earlier.

  Info
Periodical
Advanced Materials Research (Volumes 228-229)
Edited by
Quanjie Gao
Pages
1080-1084
DOI
10.4028/www.scientific.net/AMR.228-229.1080
Citation
R. Li, J. Li, J. Liu, "Body Welding Quality Control Based on a CUSUM Control Chart", Advanced Materials Research, Vols. 228-229, pp. 1080-1084, 2011
Online since
April 2011
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Price
$32.00
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