Monitoring the fatigue crack on the test specimen during the cyclic loading

Abstract

The main purpose of this paper is monitoring propagation of plastic area of fatigue crack. There were made notch on specimens and they were cyclically loaded with three-point bending. The record was evaluated after a certain number of loading cycles. The loading force is still constant throughout the measurement time for all specimens. The whole process was recorded using an infrared camera.

Keywords

• crack propagation
• cyclic load
• infrared
• radiation