TY - JOUR
T1 - Acoustic emission and near-tip elastodynamic fields of a growing penny-shaped crack
AU - Hirose, S.
AU - Achenbach, J. D.
N1 - Funding Information:
Acknowledgments-Thew ork reportedh erewas carried out in the courseo f researchs ponsoredb y the Office of Naval Researchu nderC ontractN OOO14-89-J-13w62it h NorthwesternU niversity.A Grant from Cray ResearchI nc. for access to the ~ttsburghS uper~mputerC enteri s also gratefullya cknowledged.
PY - 1991
Y1 - 1991
N2 - Elastodynamic fields for a growing penny-shaped crack under tension have been obtained by the time-domain boundary integral equation method. A crack of radius R1, is initially in equilibrium with a static tensile stress applied at infinity. The crack then propagates with a given rupture velocity, but stops abruptly when its radius reaches R2(> R1). Numerical results have been calculated for various values of the rupture velocity and the initial radius, R1, of the crack. Crack-opening displacements, stress intensity factors and radiated far fields are graphically presented as functions of time. The acoustic emission in terms of the radial displacement as calculated in this paper, has been compared with the usual approximation in which the acoustic emission is generated by a system of three double forces whose magnitudes are proportional to the crack-opening volume.
AB - Elastodynamic fields for a growing penny-shaped crack under tension have been obtained by the time-domain boundary integral equation method. A crack of radius R1, is initially in equilibrium with a static tensile stress applied at infinity. The crack then propagates with a given rupture velocity, but stops abruptly when its radius reaches R2(> R1). Numerical results have been calculated for various values of the rupture velocity and the initial radius, R1, of the crack. Crack-opening displacements, stress intensity factors and radiated far fields are graphically presented as functions of time. The acoustic emission in terms of the radial displacement as calculated in this paper, has been compared with the usual approximation in which the acoustic emission is generated by a system of three double forces whose magnitudes are proportional to the crack-opening volume.
UR - http://www.scopus.com/inward/record.url?scp=0025791108&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0025791108&partnerID=8YFLogxK
U2 - 10.1016/0013-7944(91)90019-W
DO - 10.1016/0013-7944(91)90019-W
M3 - Article
AN - SCOPUS:0025791108
SN - 0013-7944
VL - 39
SP - 21
EP - 36
JO - Engineering Fracture Mechanics
JF - Engineering Fracture Mechanics
IS - 1
ER -