Correction methods of an apparent negative crack growth phenomenon

It often occurs in J−R testing that some initial crack extension (Δa) data points have anomalous negative values. The reason for the apparent negative crack growth is due to the analysis method. The phenomenon as a possible source of error in determining JIC or J−R curve from partial unloading compl...

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Bibliographic Details
Published inInternational journal of fracture Vol. 102; no. 3; pp. 259 - 269
Main Author SEOK, C.-S
Format Journal Article
LanguageEnglish
Published Heidelberg Springer 01.04.2000
Springer Nature B.V
Subjects
Compliance
Crack propagation
Data points
Exact sciences and technology
Fracture mechanics (crack, fatigue, damage...)
Fracture mechanics, fatigue and cracks
Fundamental areas of phenomenology (including applications)
Measurement and testing methods
Measurement methods and techniques in continuum mechanics of solids
Physics
Solid mechanics
Structural and continuum mechanics
Compact tension test
J integral
Propagation velocity
Compliance
Numerical method
Error correction
Measurement method
Fracture toughness test
Crack propagation resistance
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Summary:It often occurs in J−R testing that some initial crack extension (Δa) data points have anomalous negative values. The reason for the apparent negative crack growth is due to the analysis method. The phenomenon as a possible source of error in determining JIC or J−R curve from partial unloading compliance experiments may be eliminated by the compliance correction equation or the offset technique. In this study, new correction methods based on compliance correction and blunting behavior are proposed and verified by the measurement of the actual crack length and JIC analysis.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0376-9429
1573-2673
DOI:10.1023/A:1007680608587