Conference proceeding
In-situ Acousto-ultrasonic monitoring of Crack Propagation in Al2024 Alloy
HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS 2012, v 8348(1), pp 83482J-83482J-12
01 Jan 2012
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
A data fusion technique implementing the principles of acoustic emission (AE), ultrasonic testing (UT) and digital image correlation (DIC) was employed to in situ monitor crack propagation in an Al 2024 alloy compact tension (CT) specimen. The specimen was designed according to ASTM E647-08 and was pre-cracked under fatigue loading to ensure stable crack growth. Tensile (Mode I) loads were applied according to ASTM E1290-08 while simultaneously recording AE activity, transmitting ultrasonic pulses and measuring full-field surface strains. Real-time 2D source location AE algorithms and visualization provided by the DIC system allowed the full quantification of the crack growth and the cross-validation of the recorded non-destructive testing data. In post mortem, waveform features sensitive to crack propagation were extracted and visible trends as a function of computed crack length were observed. In addition, following a data fusion approach, features from the three independent monitoring systems were combined to define damage sensitive correlations. Furthermore a novelty detector based on the Mahalanobis outlier analysis was implemented to quantify the extent of crack growth and to define a more robust sensing basis for the proposed system.
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4 citations in Scopus
Details
- Title
- In-situ Acousto-ultrasonic monitoring of Crack Propagation in Al2024 Alloy
- Creators
- Prashanth A. Vanniamparambil - Drexel UniversityIvan Bartoli - Drexel UniversityKavan Hazeli - Drexel UniversityJefferson Cuadra - Drexel UniversityEric Schwartz - Drexel UniversityRaghavendra Saralaya - Drexel UniversityAntonios Kontsos - Drexel University
- Contributors
- T Kundu (Editor)
- Publication Details
- HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS 2012, v 8348(1), pp 83482J-83482J-12
- Series
- Proceedings of SPIE
- Publisher
- Spie-Int Soc Optical Engineering
- Number of pages
- 12
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering; Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000304193700076
- Scopus ID
- 2-s2.0-84861718965
- Other Identifier
- 991019168841304721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Engineering, Multidisciplinary
- Optics