Patent ID: 6543273
Filing Date: 2003-04-08
Classification: G01N

Abstract:
A method for obtaining a rectangular parallelepiped section from an object for the purpose of being subjected to dynamic tear testing of the kind wherein a rectangular parallelepiped specimen made of a metallic material is impacted, wherein said specimen has a prescribed length, a prescribed width and a prescribed thickness, and wherein said specimen has provided therein a crack through said thickness and a portion of said width for initiating fracture of said specimen when impacted, said method comprising:determining the extent of lengthwise plastic deformation of said specimen which would result if said specimen were subjected to said dynamic tear testing; and obtaining from said object said rectangular parallelepiped section having said prescribed width, said prescribed thickness and a nonprescribed length which is shorter than said prescribed length, said nonprescribed length being at least as great as said determined extent of lengthwise plastic deformation.