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The Relationship of the Resistance Curve and Gc to Specimen Configuration

Published online by Cambridge University Press:  07 June 2016

N J I Adams  and
H G Munro
N J I Adams
Affiliation:
Nuclear Installations Inspectorate, London
H G Munro
Affiliation:
South of Scotland Electricity Board, Glasgow
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Summary

Following a brief introduction, an examination is presented of the factors which define fracture toughness, resistance-curve relationships and the extent of stable crack extension in thin-sheet failure. Tests have been performed on three aluminium alloys to establish the variations in the shape of resistance curves, using both compliance-indicated and measured absolute values of crack length in compact tension specimens and centre crack sheets. The results show that both the toughness and the resistance curves of the two specimen types are different and that these differences cannot be explained wholly by consideration of crack tip plastic zone sizes.

Type
Research Article
Information
Aeronautical Quarterly , Volume 28 , Issue 1 , February 1977 , pp. 28 - 38
Copyright
Copyright © Royal Aeronautical Society. 1977

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References

1 Krafft, J M Sullivan, A M Boyle, R W Effects of dimensions on fast fracture instability of notched sheets. Proceedings of the Crack Propagation Symposium, Cranfield Institute of Technology, pp 8–28, 1961.Google Scholar
2 Broek, D Artificial slow crack growth under constant stress. The R-curve concept in plane stress. Engineering Fracture Mechanics, Vol 5, p 45–53, 1973.Google Scholar
3 Heyer, R H McCabe, D E Plane stress fracture toughness testing using a crack-line-loaded specimen. Engineering Fracture Mechanics, Vol 4, pp 393–412, 1972.CrossRefGoogle Scholar
4 Heyer, R H McCabe, D E Crack growth resistance in plane-stress fracture testing. Engineering Fracture Mechanics, Vol 4, pp 413–430, 1972.Google Scholar
5 Bradshaw, F J Wheeler, C The crack resistance of some aluminium alloys and the prediction of thin section failure. Royal Aircraft Establishment, Technical Report TR 73191, 1974.Google Scholar
6 Adams, N J I The influence of configuration on R-curve shape and G when plane stress conditions prevail. Presented at the 9th National Symposium on Fracture Mechanics, American Society for Testing and Materials, 1975.Google Scholar
7 Adams, N J I Fracture testing of high-strength sheet materials. First report of a special ASTM Committee, Americal Society for Testing and Materials Bulletin, 1960.Google Scholar
8 Wilson, W K Geometry and loading effects on elastic stress at crack tips. Westinghouse P Research Report, 67-ID7-BTLPV-RI, 1967.Google Scholar
9 Hahn, G T Sarrate, M Rosenfield, A R Plastic zones in Fe-3Si steel double cantilever beam specimens. International Journal of Fracture Mechanics, Vol 7, pp 435–446, 1971.Google Scholar
10 Broberg, K B On stable crack extension. Report from the Division of Solid Mechanics. Lund Institute of Technology, Sweden, 1973.Google Scholar
11 Broberg, K B Methods for plane-strain fracture toughness (KIc) testing. British Standards Institute, DD3, 1971.Google Scholar
12 Adams, N J I Munro, H G Webber, D Roberts, C Fatigue and fracture of an 18% nickel maraging steel used for military bridging. Final contract report. Military Vehicles Experimental Establishment, TR 72515, July 1972.Google Scholar
13 Adams, N J I Munro, H G Webber, D Roberts, C A recommended procedure for R-curve determination. Amercian Society for Testing and Materials, Book of Standards, No 10, 1974.Google Scholar
14 Eftis, J Liebowitz, H On the modified Westergaard equations for certain plane problems. International Journal of Fracture Mechanics, Vol 8, p 383, 1972.CrossRefGoogle Scholar
15 Adams, N J I Munro, H G A single test method for evaluation of the J integral as a fracture parameter. Engineering Fracture Mechanics, Vol 6, p 119, 1974.Google Scholar
16 Brown, F W Srawley, J E Plane strain crack toughness testing. American Society for Testing and Materials, Special Technical Publication STP 410, 1967.Google Scholar
17 Erdogan, F Kibler, J J Cylindrical and spherical shells with cracks. International Journal of Fracture Mechanics, Vol 5, No 3, p 229, 1969.Google Scholar
18 Adams, N J I Some comments on the effect of biaxial stress on fatigue crack growth and fracture. Engineering Fracture Mechanics, Vol 5, p 983, 1973.Google Scholar