Fatigue Curve

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 13548 Experts worldwide ranked by ideXlab platform

S.k. Jha - One of the best experts on this subject based on the ideXlab platform.

K.s. Ravi Chandran - One of the best experts on this subject based on the ideXlab platform.

K Ravi S Chandran - One of the best experts on this subject based on the ideXlab platform.

S.-j. Chang - One of the best experts on this subject based on the ideXlab platform.

  • Near threshold Fatigue Curve based on the dislocation free zone model of fracture
    International Journal of Engineering Science, 1999
    Co-Authors: S.-j. Chang
    Abstract:

    Abstract Dislocation pileup along an inclined direction from a crack tip has been observed in metals during tensile deformation in an electron microscope. Dislocations are emitted from the crack tip, move through a dislocation free zone, and pile up in the plastic zone. The problem of inclined pileup of screw dislocations at a crack tip with a dislocation free zone has been solved by applying the Wiener–Hopf method. The result can be used to calculate the crack tip blunting and the local stress intensity K for the applied stress intensity K 3 . According to the Fatigue theory of Laird or Neumann, the crack propagation per cycle has the order of magnitude of the blunting. The blunting versus K 3 is then plotted. It has the shape of the near threshold Fatigue Curve. To plot this Curve, the local stress intensity K has been assumed to be the critical value K g for the dislocation emission at the crack tip.

O. V. Kondratyev - One of the best experts on this subject based on the ideXlab platform.