US PATENT SUBCLASS 73 / 799
.~.~ Specimen cracking or crack propagation

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

760  DF  SPECIMEN STRESS OR STRAIN, OR TESTING BY STRESS OR STRAIN APPLICATION {12}
788  DF  .~ By loading of specimen (e.g., strength of material test) {16}
799.~.~ Specimen cracking or crack propagation

DEFINITION

Classification: 73/799

Specimen cracking or crack propagation:

(under subclass 788) Subject matter wherein the loading causes formation of a narrow line splitting at least the surface of the specimen and where the splitting or progress thereof is ascertained.

SEE OR SEARCH THIS CLASS, SUBCLASS:

762, for subject matter in which an indicating coating or sheet is cracked by specimen stress.

835, for tear testing of a specimen.