Measurement of residual stresses in polymeric parts by indentation method

Title
Measurement of residual stresses in polymeric parts by indentation method
Authors
박성열김성륜김성호윤재륜
Keywords
Hole drilling method; Indentation method; Injection molding; Numerical analysis; Residual stress
Issue Date
2013-08
Publisher
Polymer testing
Citation
VOL 32, NO 5, 946-952
Abstract
An indentation method was studied as a means of measuring the residual stress in an injection molded polymeric specimen because destructive methods restrict the reuse of measured parts and it is not possible to apply them to small and complicated parts. The load-displacement curve was measured for indentation at stressed and non-stressed positions. Residual stress distribution of the injection molded part was calculated by comparing the load-displacement curve results with respect to the indentation depth. The residual stresses measured by the indentation method were reliable because they were in good agreement with numerical results and those measured by the hole drilling method. The indentation method can be utilized to measure the residual stresses in polymeric parts for practical applications, particularly for small or complicated parts.
URI
http://pubs.kist.re.kr/handle/201004/44958
ISSN
01429418
Appears in Collections:
KIST Publication > Article
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