| DOI | Resolve DOI: https://doi.org/10.1111/ffe.12253 |
|---|
| Author | Search for: Newman, J. C.; Search for: Walker, K. F.; Search for: Liao, M.1 |
|---|
| Name affiliation | - National Research Council Canada. Aerospace
|
|---|
| Format | Text |
|---|
| Type | Article |
|---|
| Journal title | Fatigue and Fracture of Engineering Materials and Structures |
|---|
| ISSN | 8756-758X |
|---|
| Volume | 38 |
|---|
| Issue | 5 |
|---|
| Pages | 528–539; # of pages: 12 |
|---|
| Subject | Alloys; Aluminum; Aluminum alloys; Amplitude modulation; Crack closure; Crack propagation; Fatigue crack propagation; Fatigue of materials; Fatigue testing; Strain; Stress analysis; Stress intensity factors; Wings; Compression pre crackings; Constant amplitude; Constraint factor; Crack mouth opening displacement; Effective stress intensity factor range; Fatigue-crack-growth tests; Full-scale fatigue test; Spectrum loading; Cracks |
|---|
| Abstract | Fatigue crack growth tests were conducted on compact, C(T), specimens made of 7249-T76511 aluminium alloy. These tests were conducted to generate crack growth rate data from threshold to near fracture over a wide range of load ratios (R). Four methods were used to generate near threshold data: (1) ASTM E-647 load reduction (LR), (2) compression pre-cracking constant-amplitude (CPCA), (3) compression pre-cracking LR, and (4) constant crack mouth opening displacement LR method. A crack closure analysis was used to develop an effective stress-intensity factor range against rate relation using a constraint factor (α = 1.85). Simulated aircraft wing spectrum tests were conducted on middle crack tension, M(T), specimens using a modified full-scale fatigue test spectrum. The tests were used to develop the constraint-loss regime (plane strain to plane stress; α = 1.85 to 1.15) behaviour. Comparisons were made between the spectrum tests and calculations made with the FASTRAN life prediction code; and the calculated crack growth lives were generally with ±10% of the test results. |
|---|
| Publication date | 2015-04-09 |
|---|
| Publisher | Wiley |
|---|
| Terms of use | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| NPARC number | 21275715 |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction |
|---|
Record identifier | 675672da-b322-4bba-8651-716e824dc405 | | Record created | 2015-07-14 |
|---|
| Record modified | 2016-05-09 |
|---|
