Prakash, Raghu V and Brahma, KK and Srinivasan, MN (1990) Threshold crack growth and crack closure in ductile iron. Technical Report. National Aeronautical Laboratory, Bangalore, India.
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Abstract
This document describes the fatigue threshold crack growth13; behaviour of ferritic ductile iron tested at stress ratios ranging between 0.1 and 0.5 . Automated K-decreasing testing was employed for the determination of threshold stress intensities . Crack closure stress estimates were made based on the P-COD curves obtained during testing . Based on this study, it was inferred that the threshold crack growth in this material is not strongly influenced by the applied stress ratio ; crack closure could explain the stress ratio effect.
| Item Type: | Proj.Doc/Technical Report (Technical Report) |
|---|---|
| Uncontrolled Keywords: | Threshold crack growth;Ferritic ductile iron;Stress ratio13; effect;K-decreasing testing;Crack mouth opening displacement gage;Crack closure stress |
| Subjects: | AERONAUTICS > Aeronautics (General) |
| Division/Department: | Other, Structures Division, Other |
| Depositing User: | Deputy Head Poornima Narayana |
| Date Deposited: | 02 Aug 2006 |
| Last Modified: | 24 May 2010 09:47 |
| URI: | http://nal-ir.nal.res.in/id/eprint/2347 |
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