ULTRASONIC GRAIN NOISE MODELLING APPLICATIONS TO TITANIUM ALLOY INSPECTION
Author(s)
THEODOR TRANCA, IULIANA RADU
Abstract
Ultrasonic non-destructive evaluation (NDE) relies on the scattering of waves from discontinuities, such as fractures or voids, to probe media otherwise invisible to the naked eye. Whilst this has been industrially exploited for several decades within acoustically transparent materials, many materials maintain a microstructure that causes scattering of the propagating waves. This undermines the aforementioned premise as it becomes exceedingly difficult to discern the features of interest from the scattering inherent to microstructural features, thereby limiting the range of materials which can be reliably inspected. Experimental investigations confirm the challenges and significant shortcomings for the inspection of future industrial components where such microstructures are desirable for their mechanical properties. It is demonstrated that the rapid increases in scattering with the frequency severely limit the achievable sensitivity of conventional ultrasound techniques. A review of the latest advances in ultrasound technology explore the opportunities to exceed current limitations and advance the capability of ultrasonic NDE.
Keywords
pulse volume, signal noise ratio, ultrasonic grain noise
Related Book
Other papers in this volume
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