Abstract
The welding of dissimilar materials finds a wide variety of applications in the fields of industrial construction and manufacturing. One of the most prominent challenges of these techniques is the development of intermetallic compounds (IMCs) at the joint level, which reduces the strength of the welds. Nonlinear ultrasound detection methods are used as modern non-destructive testing tools for inspecting early damage in various materials. This study investigates the assessment of the thickness of the IMC layer within dissimilar joints using nonlinear guided-wave (GW) features. A numerical investigation was performed on friction-stir-welded (FSW) lap joints, between AA5052-H32 aluminum and ASTM 516-70 steel, with various intermetallic conditions/thicknesses. GWs were excited in the specimens using piezoelectric transducers placed on the aluminum side. The second-harmonic generation (SHG) among the fundamental GW modes was examined within the low-excitation-frequency range. It was found that the relative acoustic nonlinearity parameter β′ varies linearly with the thickness of the IMC layer. The attained results prove the sensitivity of GW nonlinear features to microstructural variations, within dissimilar FSW joints, and demonstrate the capability of LWs in accurately scrutinizing their strength.
| Original language | English |
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| Title of host publication | Structural Health Monitoring 2023 |
| Subtitle of host publication | Designing SHM for Sustainability, Maintainability, and Reliability - Proceedings of the 14th International Workshop on Structural Health Monitoring |
| Editors | Saman Farhangdoust, Alfredo Guemes, Fu-Kuo Chang |
| Publisher | DEStech Publications |
| Pages | 2398-2406 |
| Number of pages | 9 |
| ISBN (Electronic) | 9781605956930 |
| State | Published - 2023 |
| Event | 14th International Workshop on Structural Health Monitoring: Designing SHM for Sustainability, Maintainability, and Reliability, IWSHM 2023 - Stanford, United States Duration: 12 Sep 2023 → 14 Sep 2023 |
Publication series
| Name | Structural Health Monitoring 2023: Designing SHM for Sustainability, Maintainability, and Reliability - Proceedings of the 14th International Workshop on Structural Health Monitoring |
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Conference
| Conference | 14th International Workshop on Structural Health Monitoring: Designing SHM for Sustainability, Maintainability, and Reliability, IWSHM 2023 |
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| Country/Territory | United States |
| City | Stanford |
| Period | 12/09/23 → 14/09/23 |
Bibliographical note
Publisher Copyright:© 2023 by DEStech Publi cations, Inc. All rights reserved
Keywords
- Friction stir welding
- acoustic non-linear parameter
- dissimilar welds
- intermetallic compound
- nonlinear guided waves
- numerical modelling
ASJC Scopus subject areas
- Computer Science Applications
- Civil and Structural Engineering
- Safety, Risk, Reliability and Quality
- Building and Construction