| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7169259 | Engineering Fracture Mechanics | 2018 | 27 Pages |
Abstract
Mixed mode fatigue crack growth thresholds in metals were investigated at the National Engineering Laboratory from 1975 to 1989. Re-assessment confirmed that thresholds are determined by the formation and growth of mode I branch cracks at the tip of the initial crack. Lower and upper bounds can be defined, and used for design purposes. For mixed mode I and II loading, the presence of corner points and hence corner point singularities, encourages mode I branch crack formation. Transforming a mixed mode crack into an equivalent mode I crack, as is done some design standards, is not always satisfactory.
Related Topics
Physical Sciences and Engineering
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Mechanical Engineering
Authors
L.P. Pook,