Advances in Crack Length MeasurementC. J. Beevers |
Contents
The Determination of Fatigue Crack History from | 3 |
A Two Stage Plastic Replication Technique | 41 |
Evaluation of Fatigue Damage by Optical Holography | 53 |
Copyright | |
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a. c. field aluminium alloy analysis ASTM calculated calibration curve changes characterisation chord defect compact tension constant correlation intensity corrosion fatigue crack closure crack depth crack extension crack front crack growth rate crack initiation crack length measurements crack measurement crack opening crack surface crack tip da/dN defect geometries determined diffracted displacement effect electrical potential electron environment experimental fatigue crack growth fatigue test finite element fracture mechanics fracture surface frequency gauge geometry increase induction effect input lens load cycle long crack longitudinal wave material ments metal microcracks microstructure monitoring notch number of cycles observed obtained optical optical correlation output plastic potential drop predicted probe ratio Rayleigh wave reflection coefficient Rene 95 short crack shown in Fig shows signal slot small crack small fatigue cracks steel strain strain gauge stress amplitude stress intensity factor striations superalloys surface crack testpiece transducer ultrasonic voltage