In a DDEN-T specimen, if L ¼ 0, the load-displacement curve approaches zero (Wf ¼ 0), because the specimen is separated into two halves and the force during the test is zero.
In a DDEN-T specimen, if L ¼ 0, the load-displacement curveapproaches zero (Wf ¼ 0), because the specimen is separated intotwo halves and the force during the test is zero.