An inverse method for evaluating weld residual stresses via fatigue crack growth test data
| dc.contributor.author | Bao, Rui | - |
| dc.contributor.author | Zhang, Xiang | - |
| dc.date.accessioned | 2011-11-13T23:06:17Z | |
| dc.date.available | 2011-11-13T23:06:17Z | |
| dc.date.issued | 2010-11-30T00:00:00Z | - |
| dc.description.abstract | This paper presents an inverse method for calculating the thermal residual stresses in welded specimens via measured fatigue crack growth rates. Firstly, fracture-mechanics superposition law has been used to extract the stress intensity factor due to residual stress contribution from measured crack growth rate. Secondly, a so-called B matrix has been established by performing finite element analysis. Residual stress distribution is then determined by solving linear algebraic equations relating the B matrix and residual stress intensity factors obtained from crack growth test data. The inverse method has been validated by a well-established residual stress distribution and corresponding stress intensity factor, and then applied to an M(T) sample in 2024-T3 alloy with a longitudinal weld. Agreement with the measured residual stresses is reasonably good and reasons for certain differences between the calculated and measured are discussed. | en_UK |
| dc.identifier.issn | 0013-7944 | - |
| dc.identifier.uri | http://dx.doi.org/10.1016/j.engfracmech.2010.08.010 | - |
| dc.identifier.uri | http://dspace.lib.cranfield.ac.uk/handle/1826/4693 | |
| dc.publisher | Elsevier Science B.V., Amsterdam. | en_UK |
| dc.title | An inverse method for evaluating weld residual stresses via fatigue crack growth test data | en_UK |
| dc.type | Article | - |