Renee M Rodgers

US Patent:

20090114032, May 7, 2009

Filed:

Nov 7, 2007

Appl. No.:

11/936247

Inventors:

David B. Hatfield - Oracle AZ, US
Terry M. Sanderson - Tucson AZ, US
Renee M. Rodgers - Sahuarita AZ, US

International Classification:

G01N 3/00
G01B 5/30
G01L 1/00

US Classification:

73789

Abstract:

A method of evaluating material properties of polymeric materials includes making one or more material samples or slabs, with each of the samples or slabs having a pair of material layers in contact with one another. The layers are layers of organic matrix polymer material that have different characteristics from each other, for example having a difference in composition and/or cure characteristics. Characteristics of the test slabs and the interface between the layers can be determined by examining curvatures of the test slabs. A number of samples may be made up having the same material in a first layer, and range of different materials in the respective second layers. The range may cover a range of various material compositions and/or cure characteristics.