Method and apparatus for layered structure breaking strength estimation

摘要

The method comprises the steps of inserting an edge of a cutting blade into an upper layer of the structure, moving the cutting blade substantially in parallel with an interface between the upper layer and a lower layer of the structure while a depth of the edge of the cutting blade being controlled to such a depth slightly upper than the interface and a cutting piece remains on the cutting blade, and measuring a force exerted on the cutting blade substantially in parallel with the interface.