What is it about?
Ultrasound techniques are used to derive information about the material in a structure. This work is intended to illustrate how ultrasound could be used to derive information about porosity and defect levels in the material without necessarily being able to pin-point the exact location.
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Why is it important?
Defects and porosity, particularly in composite materials, can have significant consequences on the strength and life of the component. If you know how much porosity there is, and how it is distributed (clumpy or evenly spread), then you are in a better position to judge the significance of that porosity on the performance of the component. Ultrasound could be a means to make such an assessment: exact details of the porosity are not needed, but information regarding approximate locations and extent of porosity effects could be probed by ultrasound. This would provide a practical approach to inspection.
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This page is a summary of: Explicit Finite Element Modelling as a Development Tool for New Ultrasound Testing Methodologies for Detection and Characterization of Porosity and Defects in Composites, Materials Performance and Characterization, March 2016, ASTM International,
DOI: 10.1520/mpc20150047.
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