STRUCTURAL INTEGRITY ASSESSMENT VIA THE UNIFIED THEORY OF FRACTURE IN TENSION AND/OR COMPRESSION

摘要

This paper continues the development of the so-called unified methodology (UM) for comprehensive failure assessment of safety-critical components. The UM permits to correlate in a common manner all kinds of crack response between the two extreme possibilities, crack tip failure under biaxial tension and the same under biaxial compression. The methodology proposed emerges from harmonizing a crack model with an actual crack and they both taken together with a fracture model, laboratory test method and failure assessment procedure. Pre-existing version of the UM is simplified and extended to cover the case of internally cracked finite plate under biaxial loading.