Volume 26, Issue 1 (January 1998)
A Note on One-Point-Bend Impact Fracture Experiments with Curved Specimens
We describe an extension of the one-point-bend impact test for measuring dynamic initiation fracture toughnesses with curved specimens cut from the wall of tubes. We present the impact response curve for a specific geometry of curved specimen. We validate the extension of the test procedure and data reduction method by comparing (1) the measured dynamic initiation toughness with data obtained with rectangular specimens cut from the wall of the same 300M tube and (2) the stress-intensity history measured in the experiment with that calculated in a dynamic finite element simulation of the test. For both comparisons, the agreement is excellent.