TY - GEN
T1 - Evaluation of the impact of residual stresses in crack initiation with the application of the crack compliance method part II, experimental analysis
AU - Urriolagoitia-Sosa, G.
AU - Romero-Ángeles, B.
AU - Hernández-Gómez, L. H.
AU - Urriolagoitia-Calderón, G.
AU - Beltrán-Fernández, J. A.
AU - Torres-Torres, C.
PY - 2010
Y1 - 2010
N2 - The present work is based on a previous numerical simulation used for the introduction of a residual stress field in a modified compact tensile specimen. The main objective in that paper was to evaluate the effect that previous history has in crack initiation and to establish the new loading conditions needed to propagate a fracture. The experimental analysis presented in this paper was performed to compare and validate the numerical procedure. Several modified compact tensile specimens from a biocompatible material (AISI 316L) were manufactured to estimate the beneficial effect of a residual stress field. The specimens were separated in four batches; an initial group of uncracked specimens was used to establish an evaluation of the induction of a residual stress field produced by an overload; the remaining specimens were separated into three groups where a crack was introduced in each specimen (1 mm, 5 mm and 10 mm respectively) and the residual stress field caused by the application of an overload was determined. The assessment of all the residual stress fields introduced into the specimens was done by the application of the crack compliance method (CCM). The results obtained have provided useful information on the correlation between the numerical and experimental procedures. Furthermore, data concerning the understanding of diverse factors related to crack initiation are discussed in this paper. Finally, the beneficial aspects of the residual stresses are discussed.
AB - The present work is based on a previous numerical simulation used for the introduction of a residual stress field in a modified compact tensile specimen. The main objective in that paper was to evaluate the effect that previous history has in crack initiation and to establish the new loading conditions needed to propagate a fracture. The experimental analysis presented in this paper was performed to compare and validate the numerical procedure. Several modified compact tensile specimens from a biocompatible material (AISI 316L) were manufactured to estimate the beneficial effect of a residual stress field. The specimens were separated in four batches; an initial group of uncracked specimens was used to establish an evaluation of the induction of a residual stress field produced by an overload; the remaining specimens were separated into three groups where a crack was introduced in each specimen (1 mm, 5 mm and 10 mm respectively) and the residual stress field caused by the application of an overload was determined. The assessment of all the residual stress fields introduced into the specimens was done by the application of the crack compliance method (CCM). The results obtained have provided useful information on the correlation between the numerical and experimental procedures. Furthermore, data concerning the understanding of diverse factors related to crack initiation are discussed in this paper. Finally, the beneficial aspects of the residual stresses are discussed.
KW - Crack compliance method
KW - Crack initiation
KW - Modified SEN specimen
KW - Residual stress
UR - http://www.scopus.com/inward/record.url?scp=78650784471&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMM.24-25.261
DO - 10.4028/www.scientific.net/AMM.24-25.261
M3 - Contribución a la conferencia
SN - 9780878492480
T3 - Applied Mechanics and Materials
SP - 261
EP - 266
BT - Advances in Experimental Mechanics VII
T2 - 7th International Conference on Advances in Experimental Mechanics
Y2 - 7 September 2010 through 9 September 2010
ER -