Method and apparatus for quantifying porosity in a component

Details Method and apparatus for quantifying porosity in a component Method and apparatus for quantifying porosity in a component

2011-03-01

2011-03-01

Larkin, Daniel S (Department: 2856)

Measuring and testing

Vibration

By mechanical waves

C073S602000, C073S609000

Reexamination Certificate

active

07895895

ABSTRACT:
A computer implemented method, or hardware filtration apparatus, and computer usable program code for measuring porosity in materials. An ultrasonic signal is emitted from a transmitting transducer in an ultrasonic measurement system into a material. A response signal is received at a receiving transducer in the ultrasonic measurement system from the material. The response signal is filtered to pass only frequencies in the response signal within a selected frequency range to form a filtered response signal. A porosity level of the material is identified using the filtered response signal.

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Mitri, F.G. et al., “Surface Roughness Imaging Using the Acosutic Emission Induced by the Dynamic Radiation Force of Ultrasound”, Applied Physics Letters, vol. 88, 2006, pp. 234105-1 through 234105-3.

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