Toughening effect analysis in problems of propagating cracks interacting with interfaces

JAVIER ZAMBRANO; SEBASTIAN TORO; PABLO JAVIER SÁNCHEZ; CARLOS MÉNDEZ; FERNANDO PEREIRA DUDA; ALFREDO EDMUNDO HUESPE

Rio de Janeiro

Workshop; Critical Structural Integrity Challenges for the Energy Sector: Stress Corrosion Cracking and Hydrogen Embrittlement; 2023

Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia (COPPE)

Objectives of this presentation:✔ Fracture resistance of bodies with interfaces, how can be increased through the mechanism of crack propagation shielding.   * Design new material with the objective to enhance resistance to fracture.✔ This shielding mechanism is intimately related to both material failure criteria:   * crack nucleation governed by strength   versus   * crack nucleation governed by toughness.✔ Use of Phase Field Models (PFM) is adequate to simulate such phenomenon (PFM have been historically based on the crack nucleation toughness notion).