The energy dissipation during fatigue crack growth in metallic materials

Title

The energy dissipation during fatigue crack growth in metallic materials

 Author

Quan, H. (TU Delft Structural Integrity & Composites)
Alderliesten, R.C. (TU Delft Structural Integrity & Composites) ORCID 0000-0003-1882-5396

 Date

2022

 Abstract

An energy equation for fatigue crack growth was proposed. It equates the total external work per cycle (dW/dN) to the sum of plastic dissipation (dUpl/dN), change in strain energy stored (dUe/dN) and the energy dissipated in new crack surface formation (dUa/dN). Fatigue crack growth experiment of 7075-T6 was used to derive the relation between fatigue crack growth rate (da/dN) and variables in this equation. The result shows dUpl/dN and dUe/dN are not straightforwardly related to da/dN. The dUa/dN, whose value cannot be obtained sufficiently precise experimentally, can be the variable straightforwardly related to da/dN within the range of test.


 Subject

7075-T6
Energy dissipation
Fatigue crack growth

 To reference this document use:

http://resolver.tudelft.nl/uuid:279950ab-f3c3-464a-b6a7-765b48c17089

 DOI

https://doi.org/10.1016/j.engfracmech.2022.108567

 ISSN

0013-7944

 Source

Engineering Fracture Mechanics, 269

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2022 H. Quan, R.C. Alderliesten
Files
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