| Download | - View author's version: Residual stress effects of a fatigue crack on guided lamb waves (PDF, 2 MB)
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| DOI | Resolve DOI: https://doi.org/10.1088/1361-665X/aa8a0c |
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| Author | Search for: Martinez, Marcias J.; Search for: Pant, Shashank1 ; Search for: Yanishevsky, Marko1 ; Search for: Backman, David1 |
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| Name affiliation | - National Research Council Canada. Aerospace
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| Format | Text |
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| Type | Article |
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| Journal title | Smart Materials and Structures |
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| ISSN | 0964-1726
1361-665X |
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| Abstract | Structural health monitoring has focused on the use of computational models to capture the effect of crack-like discontinuities on the behaviour of acoustic-ultrasonic signals. However, few models have taken into account the effect of geometric complexity in combination with residual stresses generated during the fatigue crack growth process. In this study, a finite element analysis model of a C-channel type aeronautical structure is evaluated under a pitch-catch scenario. Three different finite element model configurations were considered in order to understand the effects that residual stresses of a fatigue crack emanating from a through-hole have on the guided Lamb wave propagation behaviour. The results demonstrate that numerical modelling is able to capture the change in amplitude and the effect of a phase shift on the guided Lamb wave behaviour due to the presence of the discontinuity and the stress field generated during the fatigue crack growth process. |
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| Publication date | 2017-09-04 |
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| Publisher | IOP Publishing |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 23002233 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction |
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Record identifier | 5a0dd84c-474b-49cc-a59d-a856f096162f | | Record created | 2017-09-12 |
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| Record modified | 2019-03-11 |
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