US 7,320,241 B2
Ultrasonic inspection reference standard for composite materials
Jeffrey R. Kollgaard, Kent, Wash. (US); and David Truong, Seattle, Wash. (US)
Assigned to The Boeing Company, Chicago, Ill. (US)
Filed on Nov. 04, 2005, as Appl. No. 11/267,671.
Prior Publication US 2007/0101815 A1, May 10, 2007
Int. Cl. G01N 29/30 (2006.01)
U.S. Cl. 73—1.86 12 Claims
OG exemplary drawing
 
1. A system for inspecting composite materials, comprising:
an ultrasonic inspection apparatus for ultrasonically scanning a material comprising a composite material to be inspected; and
a block comprising a reference composite material corresponding to the composite material to be tested, the block including:
a first plurality of rectangular parallel channels within the block, wherein each channel includes a flat surface and each flat surface is co-planar; and
a second plurality of rectangular parallel channels within the block, perpendicular to the first plurality of channels, wherein each channel of the second plurality of channels includes a flat surface and each flat surface is co-planar and wherein the second plurality of channels is located on a separate plane as the first plurality of channels.