Abstract
A technique for measuring stress waves emitted during slow crack growth is briefly described. The number and size of the stress waves generated appears to bear a unique relationship to the amount of crack growth. From elasticity theory, a semi-empirical relationship is developed. Δ ≈ (Σg)2 E/K2, where ΔA is the incremental area swept out by the crack, Σg, is the sum of the stress-wave amplitudes associated with that increment of growth, E is the elastic modulus and K is the applied stress-intensity factor. This relationship is shown to be valid for about 100 data points obtained from crack growth in high-strength aluminum, titanium and steel alloys.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 185-192 |
| Number of pages | 8 |
| Journal | International Journal of Fracture Mechanics |
| Volume | 3 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 1967 |
| Externally published | Yes |