Computer controlled method for measurement of surface crack length on plate subjected to fatigue loading

Abstract

The calibration curves obtained using strain gages are used to predict surface crack length on plate specimen subjected to 4-point bending fatigue loading. The results shows that the proposed procedure is of high precision with the maximum error percentage being less than 6%,and it can be easily used to estimate or monitor the surface crack length under fatigue loading both in laboratory and in engineering. It is also quite meanful for nondamage detecting.

Keywords

computer control / calibration / fatigue loading / nondamage detecting

References

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