Method for determining plane strain fracture toughness of non-el

Details Method for determining plane strain fracture toughness of non-el Method for determining plane strain fracture toughness of non-el

1979-03-19

1981-11-10

Swisher, S. Clement

Measuring and testing

Ductility or brittleness

73799, G01N 308, G01N 332

Patent

active

042991200

ABSTRACT:
The present invention involves a new method for measuring plane strain fracture toughness (K.sub.Ic) of a somewhat non-elastic material uniquely suitable for use on specimens that are smaller than have formerly been required for performing valid K.sub.Ic tests. The present invention involves selecting a short-rod specimen configuration in which the specimen material at a crack front or tip therein would be constrained during loading to a plane strain state and, from the measurement and anelastic analysis of a load-displacement curve that includes at least two unloading slopes the energy per unit crack area that is required to slowly advance a steady state crack can be determined, which data, along with measurement of the critical load when the crack passes through a known location, and considering the specimen geometry, is used to determine the fracture toughness, K.sub.Ic, of the specimen.

REFERENCES:
patent: 4116049 (1978-09-01), Barker

Affiliated with

Also associated with

Rating

Method for determining plane strain fracture toughness of non-el does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for determining plane strain fracture toughness of non-el, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for determining plane strain fracture toughness of non-el will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2357581