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Predicting the occurrence of cosmetic defects in automotive skin panels
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Hazra, S. K. , Williams, D., Roy, Rajat, Aylmore, R., Allen, M. and Hollingdale, D. (2011) Predicting the occurrence of cosmetic defects in automotive skin panels. In: The 14th International ESAFORM Conference on Material Forming - ESAFORM 2011, Queen's University Belfast, UK, Apr 27-29, 2011. Published in: AIP Conference Proceedings, Vol.1353 pp. 253-257. ISSN 0094-243X. doi:10.1063/1.3589524
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Official URL: http://dx.doi.org/10.1063/1.3589524
Abstract
The appearance of defects such as 'hollows' and 'shock lines' can affect the perceived quality and attractiveness of automotive skin panels. These defects are the result of the stamping process and appear as small, localized deviations from the intended styling of the panels. Despite their size, they become visually apparent after the application of paint and the perceived quality of a panel may become unacceptable. Considerable time is then dedicated to minimizing their occurrence through tool modifications. This paper will investigate the use of the wavelet transform as a tool to analyze physically measured panels. The transform has two key aspects. The first is its ability to distinguish small scale local defects from large scale styling curvature. The second is its ability to characterize the shape of a defect in terms of its wavelength and a 'correlation value'. The two features of the transform enable it to be used as a tool for locating and predicting the severity of defects. The paper will describe the transform and illustrate its application on test cases.
| Item Type: | Conference Item (Paper) | ||||
|---|---|---|---|---|---|
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics T Technology > TS Manufactures |
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| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||
| Journal or Publication Title: | AIP Conference Proceedings | ||||
| Publisher: | American Institute of Physics | ||||
| ISSN: | 0094-243X | ||||
| Official Date: | 2011 | ||||
| Dates: |
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| Volume: | Vol.1353 | ||||
| Page Range: | pp. 253-257 | ||||
| DOI: | 10.1063/1.3589524 | ||||
| Status: | Not Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | The 14th International ESAFORM Conference on Material Forming - ESAFORM 2011 | ||||
| Type of Event: | Conference | ||||
| Location of Event: | Queen's University Belfast, UK | ||||
| Date(s) of Event: | Apr 27-29, 2011 |
Data sourced from Thomson Reuters' Web of Knowledge
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