Reference standard for ultrasonic measurement of porosity...

Details Reference standard for ultrasonic measurement of porosity... Reference standard for ultrasonic measurement of porosity...

2006-12-21

2009-11-17

Saint Surin, J M (Department: 2856)

Measuring and testing

Instrument proving or calibrating

Apparatus for measuring by use of vibration or apparatus for...

C029S593000

Reexamination Certificate

active

07617715

ABSTRACT:
Ultrasonic measurements of porosity in manufactured parts or materials are calibrated using reference standards in which parallel holes are drilled in the backside of a body of material. The holes simulate voids in a part which attenuate incident ultrasonic energy. The number, size and location of the holes determine the simulated level of porosity that may be used to calibrate an ultrasonic tester. Multiple reference standards representing different levels of porosity can be produced in the form of individual coupons, or in a single body having multiple groups of holes.

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