A Hybrid Approach To Determine Ductile Fracture Resistance

A Simple Method to Determine Ductile Fracture Strain in a Tensile Test of Plane Specimen’s

In several practical cases, the ultimate ductile fracture strain determined with tensile test is accepted as a material plasticity measure 1 . In this case, the plasticity has to be defined as an ability of a material to accommodate high permanent strains until fracture appears where this strain reaches certain value called ultimate fracture strain p. The strain value until fracture depends not...

A Hybrid Fuzzy MCDM Approach to Determine an Optimal Block Size in Open-Pit Mine Modeling: a Case Study

The computer-based 3D modeling of ore bodies is one of the most important steps in the resource estimation, grade determination, and production scheduling of open-pit mines. In the modeling phase, the volume of the orebody model is required to be filled by the blocks and sub-blocks. The determination of Block Size (BS) is important due to the dependence of the geostatistical issues and calculat...

Continuum models of ductile fracture : A review

The past 20 years have seen substantial work on the modeling of ductile damage and fracture. Several factors explain this interest. (i) There is a growing demand to provide tools which allow to increase the efficiency of structures (reduce weight, increase service temperature or load, etc.) while keeping or increasing safety. This goal is indeed first achieved by using better materials but also...

A Fracture Model Applied to the Ductile/Brittle Regime

Industrial application of Instrumented DWTT in evaluating material resistance to ductile fracture for modern pipeline steels

CTOAC of typical X70, X80 and X90 pipeline steels plates were evaluated by using energy based regression method upon their single specimen. Clear difference in the material resistance to ductile cracking could be distinguished by the values of CTOAC and their characteristic fracture surface. The region of stable cracking on the fracture surface could be identified from the dynamic crack extensi...