Blind hole drilling technique for residual stress measurement: application in ndt

1980 ◽  
Vol 13 (1) ◽  
pp. 3-9 ◽  
Author(s):  
S.S. Birley ◽  
A. Owens

Author(s):  
Amir H. Mahmoudi ◽  
David J. Smith ◽  
Chris E. Truman ◽  
Martyn J. Pavier

Accurate evaluation of residual stress is essential if is to be taken into account in structural integrity assessments. For thick components, many non-destructive residual stress measurement techniques cannot be used since they are unable to measure the stresses deep within the component. Measurement techniques which involve mechanical strain relief through material removal are the only alternative. Recently, it has been found that these techniques may fail to measure the stresses correctly when highly triaxial stresses are present because plastic redistribution can occur when the material removal is carried out. The Deep Hole Drilling technique is a very powerful method to measure the stresses within very thick engineering components. However, it can suffer from high levels of plasticity and lead to inaccurate results. It is shown in the present research that the effect of plasticity on the measured stresses can be eliminated. In the present work, the effect of gauge volume on the plasticity effect is investigated.





2006 ◽  
Vol 46 (4) ◽  
pp. 417-427 ◽  
Author(s):  
D. Stefanescu ◽  
C. E. Truman ◽  
D. J. Smith ◽  
P. S. Whitehead


2019 ◽  
Vol 14 ◽  
pp. 337-344
Author(s):  
Digendranath Swain ◽  
A. Sharma ◽  
S.K. Selvan ◽  
B.P. Thomas ◽  
Govind ◽  
...  


2014 ◽  
Vol 996 ◽  
pp. 301-306 ◽  
Author(s):  
Yann Serra ◽  
Xavier Ficquet ◽  
Ed Kingston

The hole drilling technique is probably the most widely used residual stress measurement technique. The ASTM E837 standard covers hole drilling measurements for thin and thick specimens. VEQTER have encountered several cases when the specimen was between the thick and thin specification. In order to gain a greater understanding of the sensitivity of the analyses and accurately measure the residual stresses using the hole drilling technique within intermediate thickness specimens and within thin specimens containing non-uniform residual stresses a study was performed.



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