Weihrauch, Melissa 
ORCID: 0000-0002-7352-293X, Patel, Maulik ORCID: 0000-0002-3214-5752 and Patterson, Eann A ORCID: 0000-0003-4397-2160
(2024)
Effects of Ion Irradiation on Stage II Fatigue Crack Growth and Plasticity.
Fatigue & Fracture of Engineering Materials & Structures, 47 (4).
pp. 1219-1229.
|
Text
Effects of Ion Irradiation on Stage II Fatigue Crack Growth and Plasticity.pdf - Author Accepted Manuscript Download (1MB) | Preview |
Abstract
<jats:title>Abstract</jats:title><jats:p>Fatigue crack growth characteristics of ion irradiated compact tension (CT) specimens were evaluated in the Paris law region. Fatigue crack growth was monitored under tension‐tension loading and the thermoelastic response was measured. Two stages of crack propagation were identified. In the first 300,000 cycles, crack growth rates of irradiated and unirradiated specimens were comparable and plastic zone area was found to be independent of crack length. Beyond 300,000 cycles, irradiated specimens showed a greater crack growth rate; additionally, the plastic zone area increased with crack length. The increase in crack growth rate was attributed to irradiation hardening. The plastic zone area was found to be dependent on the crack path, especially in the initial stages of crack propagation. Local peaks in the value of the area of the plastic zone were found to be associated with greater crack tortuosity and secondary cracks. As a result, decreases in plastic zone area were associated with greater crack growth rates.</jats:p>
| Item Type: | Article |
|---|---|
| Divisions: | Faculty of Science and Engineering > School of Engineering |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 08 Dec 2023 11:25 |
| Last Modified: | 08 Apr 2024 02:31 |
| DOI: | 10.1111/ffe.14223 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3177221 |
Dimensions
Dimensions
