Bio-Inspired Acoustic Nondestructive Testing and Evaluation System

Because of their advantageous weight, strength, and durability properties, complex composite materials are increasingly replacing traditional metal and alloy components in many industries. Testing of these composites is necessary for detecting manufacturing flaws, which are often critical but invisible, and ensuring structural integrity of the materials. Non-destructive testing (NDT) is used extensively for evaluating materials components and systems without causing harm or disruption. However, current NDT techniques lack sensitivity for certain subsurface defects. Thus, there is a need for improved accuracy and reliability in NDT methods.

 

Researchers at Arizona State University have developed an innovative non-destructing testing (NDT) system for determining the characteristics of composite materials. This bio-inspired method mimics the specialized percussive tapping and pre-tap scratching behaviors of the nocturnal aye-aye lemur. Using multi-modal sensing and specialized acoustic analysis processing, cracks, cavities and other anomalies beneath the surface can be identified. With a hand-held form factor, scanning capabilities and the ability to use batteries, this system can be used in hard environments and be automated if necessary.

 

This technology uses bio-inspired multi-modal sensing to analyze composite materials without destroying them.

 

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