Fracture toughness testing device

Details Fracture toughness testing device Fracture toughness testing device

G - Physics

01

N

73/12

G01N 3/00 (2006.01) G01N 3/20 (2006.01) G01N 19/08 (2006.01)

Patent

CA 1199508

TITLE FRACTURE TOUGHNESS TESTING DEVICE INVENTOR Anthony R. Ingraffea ABSTRACT OF THE DISCLOSURE Expandable jaws comprise lever arms pivoted together at their base and forming a bifurcated Y-shaped assembly which acts by force application to fracture a specimen. The force is applied through and measured by deflection of a force gauge U-spring having one side fixed to one of the lever arms remote from the specimen and the other cable connected via a threaded shaft and knob to the other lever arm. A dial reads directly the force required to effect fracture toughness, fatigue crack, growth resistance or stress corrosion crack growth resistance of slotted short rod/bar specimens.

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