Controlled Crack Growth with a Dual-Tip Indenter

摘要

A new indentation tip with two rectangular pads is proposed. These pads are loaded, located to the sides of any pre-existing crack, for example, as developed from a Vickers micro-indentation. From the controlled growth of these cracks it is possible to compute different Fracture Mechanics parameters such as the critical stress intensity factor of the material or the arrest stress intensity factor for brittle materials. An example of its application to common soda-lime glass is described.