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Conference proceeding
Leaky Guided Waves in Generic Bars: Numerical Prediction and Experimental Validation by Means of Ultrasonic Underwater Testing
40TH ANNUAL REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION: INCORPORATING THE 10TH INTERNATIONAL CONFERENCE ON BARKHAUSEN NOISE AND MICROMAGNETIC TESTING, VOLS 33A & 33B, v 1581(1), pp 571-578
01 Jan 2014
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Guided Ultrasonic Waves (GUWs) are used in several industrial and civil applications for the non-destructive tests and inspection of mechanical waveguides immersed in fluids.
As well known, the impedance mismatch at the fluid-structure interface causes the bulk waves traveling inside the waveguide to be partially refracted in the surrounding fluid. The leakage of bulk waves involves continuous energy radiation along the propagation direction, resulting in high attenuation rates and, consequently, reduced inspection ranges. In this work, the dispersion behaviour of leaky guided waves that propagate in immersed waveguides of general cross-section is investigated.
To this end, a Semi-Analytical Finite Element (SAFE) method coupled with a 2.5D Boundary Element method (BEM) is used to extract the wave dispersion equation. The proposed formulation avoids the well known limitations of analytical methods in treating complex geometries as well as those of Finite Element-based methods in representing propagation processes in unbounded domains. Numerical and experimental results are presented, in which the dispersion curves are extracted for different bars of arbitrary shape immersed in water.
The results obtained in this paper can be useful for the design of testing conditions in practical applications and to tune experimental set up.
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Details
- Title
- Leaky Guided Waves in Generic Bars: Numerical Prediction and Experimental Validation by Means of Ultrasonic Underwater Testing
- Creators
- Matteo Mazzotti - Drexel Univ, Civil Architectural & Environm Engn CAEE Dept, 3141 Chestnut St, Philadelphia, PA 19104 USAIvan Bartoli - Drexel UniversityAlessandro Marzani - Univ degli Studi Bologna, Dipartimento Ingegneria Civile, Ambientale & dei Materiali DICAM, I-40136 Bologna, Italy
- Contributors
- D E Chimenti (Editor)L J Bond (Editor)D O Thompson (Editor)
- Publication Details
- 40TH ANNUAL REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION: INCORPORATING THE 10TH INTERNATIONAL CONFERENCE ON BARKHAUSEN NOISE AND MICROMAGNETIC TESTING, VOLS 33A & 33B, v 1581(1), pp 571-578
- Series
- AIP Conference Proceedings
- Publisher
- American Institute of Physics
- Number of pages
- 8
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:000342312400076
- Scopus ID
- 2-s2.0-84903160692
- Other Identifier
- 991019168570704721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Physics, Applied