System and method for defect detection by inducing acoustic chaos
AssigneeWayne State University
InventorsLawrence D. Favro, Robert L. Thomas, Xiaoyan Han
Life of this patent
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Abstract
A defect detection system for thermally imaging a structure that has been energized by sound energy. The system includes a transducer that couples a sound signal into the structure, where the sound signal induces acoustic chaos in the structure that causes defects in the structure to heat up. In one embodiment, the transducer is a broadband transducer. A thermal imaging camera images the structure when it is heated by the sound signal.
Claims20
A defect detection system for detecting defects in a structure, said system comprising:
- a broadband transducer for applying a broadband sound input signal to the structure, said broadband transducer being coupled to the structure in a manner so that the sound signal induces acoustic chaos in the structure to heat the defect;
- and
- a thermal imaging camera for generating thermal images of the structure to identify the heated defect.
A defect detection system for detecting defects in a structure, said system comprising:
- an electronic chaos signal generator for generating a chaos signal;
- a broadband transducer responsive to the chaos signal from the chaos chaos signal is transferred from the transducer to the structure to cause the structure to vibrate in a chaotic manner and heat the defect;
- and
- a thermal imaging camera for generating thermal images of the structure to identify the heated defect.
A method for detecting defects in a structure, said method comprising:
- applying a chaos signal from a broadband transducer to the structure so that the chaos signal enters the structure to cause the structure to vibrate in a chaotic manner and heat the defect;
- and
- thermal imaging the structure to identify the heated defect.
Dependencies are inferred from the claim text.