| ||Format||Pages||Price|| |
|PDF (180K)||14||$25||  ADD TO CART|
|Complete Source PDF (6.7M)||439||$55||  ADD TO CART|
A simple one-dimensional mathematical model for rapid fracture and crack arrest in a double-torsion fracture specimen is developed. The model indicates that the crack speed is limited by the torsional wave speed, which depends upon the shear wave speed and the cross-sectional geometry. By appropriate design of the specimen, it appears that some control can be exercised over the portion of the fracture toughness-crack speed relation that the crack tip samples. Analyses are performed for both speed-independent and speed-dependent fracture toughnesses. Qualitatively the predicted crack history for this specimen has many of the characteristics predicted and measured in the more traditional specimens.
double-torsion fracture specimen, fracture toughness, dynamic crack propagation
Professor, The Ohio State University, Columbus, Ohio