Polarimetric fiber‐optic ultrasonic sensor for the nondestructive evaluation of materials

Millimeter Wave Doppler Sensor for Nondestructive Evaluation of Materials

INTRODUCTION Resonance modes are intrinsic characteristics of objects when excited at those frequencies. Probing the resonance signatures can reveal useful information about material composition, geometry, presence of defects, and other characteristics of the object under test. Vibration spectra can be measured remotely with high degree of sensitivity using a millimeter wave (mmW) Doppler senso...

Ultrasonic Signal Processing Platform for Nondestructive Evaluation

Ultrasonic Nondestructive Testing Method for Evaluation of Annular Seals

Drilling boreholes is common practice in geotechnical and geoenvironmental investigations and in various other ex­ ploration, testing, and monitoring appli­ cations. When a casing is placed in a borehole an annular space is created be­ tween the casing and the surrounding soil. If not properly sealed, this annular space can be a potential path for trans­ port of contaminants in the subsurface e...

Reconfigurable Ultrasonic Smart Sensor Platform for Nondestructive Evaluation and Imaging Applications

In this chapter, a Reconfigurable Ultrasonic Smart Sensor Platform (RUSSP) for real-time signal analysis and image processing is presented. The RUSSP is designed to facilitate the development and implementation of ultrasonic signal processing algorithms with embedded software and reconfigurable hardware. It provides the opportunity to explore the full design space including software only, hardw...

Concentric coplanar capacitive sensor for nondestructive evaluation

A concentric coplanar capacitive sensor includes a charged central disc forming a first electrode, an outer annular ring coplanar with and outer to the charged central disc, the outer annular ring forming a second electrode, and a gap between the charged central disc and the outer annular ring. The first electrode and the second electrode may be attached to an insulative film. A method provides...