The influence of biaxial strain ratio and strain range on crack growth mode and crack shape

• Published in: Journal of materials science Vol. 46; no. 1; pp. 215 - 227
• Main Authors: Topper, T. H., Bonnen, J. J. F., Khalil, M., Varvani-Farahani, A.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 2011; Springer; Springer Nature B.V
• Subjects: Analysis; Biaxial tests; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Confocal; Crack propagation; Cracks; Crystallography and Scattering Methods; Dependence; Elongation; Evolution; Growth; Laser microscopy; Materials Science; Measuring instruments; Polymer Sciences; Shear; Solid Mechanics; Strain; Torsion tests; Toy industry; Variable amplitude loading; Crack Depth; Crack Growth Rate; Fatigue Life; Strain Amplitude; Fatigue Limit

Axial-torsion tests were used to determine and model the combinations of strain range and crack length at which the crack growth changed from a shear to a tensile mode. Biaxial tests and confocal scanning laser microscopy (CSLM) were used to observe crack shape evolution at various strain ratios. Co...