Pseudo porosity reference standard for cored composite...

Details Pseudo porosity reference standard for cored composite... Pseudo porosity reference standard for cored composite...

2006-12-06

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...

C073S001030, C073S001820

Reexamination Certificate

active

07617714

ABSTRACT:
The invention relates to pseudo porosity standards, and methods for their manufacture and use, which substantially mimic the effect porosity has on ultrasonic sound as it passes through a cored composite laminate having porosity. An ultrasonic inspection reference standard for cored composite laminates having porosity may include a member having at least one thickness, at least one core, and at least one mesh. The member may be manufactured from a fiber-free polymer resin using a stereo lithography process. Use of the mesh may produce a standard which transmits ultrasonic energy, with the mesh scattering and attenuating the energy. Use of the core may aide in modeling a cored composite laminate. The manufactured reference standard may replace more costly porous, cored, composite laminate reference standards in the aircraft industry and in other non-aircraft applications.

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