Conference proceeding
Cross-validated detection of crack initiation in aerospace materials
HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS 2014, v 9064, pp 906429-906429-11
01 Jan 2014
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
A cross-validated nondestructive evaluation approach was employed to in situ detect the onset of damage in an Aluminum alloy compact tension specimen. The approach consisted of the coordinated use primarily the acoustic emission, combined with the infrared thermography and digital image correlation methods. Both tensile loads were applied and the specimen was continuously monitored using the nondestructive approach. Crack initiation was witnessed visually and was confirmed by the characteristic load drop accompanying the ductile fracture process. The full field deformation map provided by the nondestructive approach validated the formation of a pronounced plasticity zone near the crack tip. At the time of crack initiation, a burst in the temperature field ahead of the crack tip as well as a sudden increase of the acoustic recordings were observed. Although such experiments have been attempted and reported before in the literature, the presented approach provides for the first time a cross-validated nondestructive dataset that can be used for quantitative analyses of the crack initiation information content. It further allows future development of automated procedures for real-time identification of damage precursors including the rarely explored crack incubation stage in fatigue conditions.
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10 citations in Scopus
Details
- Title
- Cross-validated detection of crack initiation in aerospace materials
- Creators
- Prashanth A. Vanniamparambil - Drexel UniversityJefferson Cuadra - Drexel UniversityUtku Guclu - Drexel UniversityIvan Bartoli - Drexel UniversityAntonios Kontsos - Drexel University
- Contributors
- T Kundu (Editor)
- Publication Details
- HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS 2014, v 9064, pp 906429-906429-11
- Series
- Proceedings of SPIE
- Publisher
- Spie-Int Soc Optical Engineering
- Number of pages
- 11
- Grant note
- N00014-13-1-0143 / ONR; Office of Naval Research
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering; Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000348027200060
- Scopus ID
- 2-s2.0-84901981422
- Other Identifier
- 991019169111404721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Engineering, Biomedical
- Engineering, Civil
- Optics