Multi-Parameter, Multi-Frequency Acousto-Ultrasonic for Detecting Impact Damage in Composites

  • James R. Mitchell


The inability to detect impact damage in composite material structures is a major factor blocking more extensive use of these materials. Past research utilizing a simplistic measurement of AU has indicated great potential when used in a laboratory environment. The use of AU outside of the laboratory by non-scientists has not met with the same success. This report describes the use of a more complicated approach to AU which incorporates several parameters measured simultaneously. The result is a technique, called “DCAT” (Dry Contact Acoustic Transmission; Patent Pending), which can be utilized to locate impact damage in non-laboratory environments.


Acoustic Emission Stress Wave Carbon Fiber Reinforce Plastic Impact Damage Composite Material Structure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media New York 1988

Authors and Affiliations

  • James R. Mitchell
    • 1
  1. 1.Physical Acoustics CorporationLawrencevilleUSA

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