Changes in crack tip shape and strain distribution with crack propagation velocity (IMAGE)

Japan Science and Technology Agency

Changes in crack tip shape and strain distribution with crack propagation velocity

Caption

At slow crack velocities, the crack tip exhibits a blunt parabolic shape. (Bottom) At high crack velocities, viscoelastic effects cause the crack tip to become sharp. The degree of crack tip sharpening is determined by the product of the material's viscoelastic relaxation time and the crack propagation velocity.

Credit

Dr. Naoyuki Sakumichi

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