DETERMINATION OF INTERLAMINAR FRACTURE TOUGHNESS

Double cantilever beam specimen with initial crack and
attached hinges for loading.

Load versus crack opening deflection for uniform DCB specimen

End-notched flexure (ENF) specimen for determination of
mode II interlaminar fracture toughness

Specimen holder and loading fixture for pure and mixed mode interlaminar fracture testing in Arcan fixture.

Doubly-split double cantilever beam specimen for determination of
mode III fracture toughness.

Edge-cracked torsion (ECT) specimen for determination of mode III delamination fracture toughness.