Dr. Steven P. Neal (Project 5)

A New Approach for the Detection of Weak Interface Signals

In certain remote sensing applications, propagating waves are introduced into a medium and the echo response from the medium is analyzed in order to detect an interface within the medium.  This project deals with the reduction to practice of a new measurement and data analysis approach, discovered at MU, for the detection of interfaces in the presence of noise.  The new approach requires only single-sided access.  In ultrasonics, the approach can be implemented in either an immersion or a contact mode.  The approach can be applied using one single-element transducer or using an array transducer.  The new interface detection technique is applicable with both mechanical waves (for example, acoustic waves) and electromagnetic waves, using existing equipment

Research supported under:

• NSF -- Diffuse Ultrasonics and Materials Characterization
• Honeywell -- Ultrasonic Based Assessment of Upset Forged Welds and Inertial Welds

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