PPT Slide

FAILURE CRITERIA: FLOW/YIELD and FRACTURE

• The Flow, Yield or Failure criterion must be in terms of stress in such a way that it is valid for all states of stress.

• A given material may fail by either yielding or fracture depending on its properties and the state of stress.

• A number of different failure criteria are available, some of which predict failure by yielding, and others failure by fracture.

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