Rapid crack spread

Slow crack spread

spread of crack

crack-crack interaction

crack nucleus-shaping and crack expansion

structure at crack-tip and propagation of crack

spread and de-spread spectrum

(I) crack

Ⅰ crack extension

Ⅰ+Ⅱmode crack

Ⅰ-Ⅱ mixed mode crack

Ⅰ-mode crack

3D crack

3-D crack

3D crack dip angle

3-D crack problems

3-D crack propagation

3-D crack propagation criterion

3-D elastodynamic crack problems

3-d planar crack terminating at the interface