Suitability of constraint and closure models for predicting crack growth in generic configurations

Escalero, Mikel; Muñiz‐Calvente, Miguel; Zabala, Haritz; Urresti, I.

doi:10.1016/j.engfracmech.2019.106808

Cited by 8 publications

(1 citation statement)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This concept was applied to notched samples and it was found that a significant number of cases studied fall outside the SSY regime 20 . Escalero et al 21 followed a similar approach, using the J integral. The boundary of SSY was defined by the separation of two J ‐integral curves obtained for elastic and elastic–plastic material models.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of small‐scale yielding boundary using digital image correlation results

Vasco-Olmo

Díaz-Garrido

Neto

et al. 2022

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

In this work, the boundaries of small‐scale yielding (SSY) and large‐scale yielding (LSY) have been experimentally evaluated from the analysis of crack tip opening displacement (CTOD) measured by digital image correlation (DIC). According to a previous numerical work, the ratio between the elastic CTOD range and the total CTOD range (Δδe/Δδt) defines the boundaries of SSY conditions and LSY. Three materials have been studied, commercially pure titanium and 2024‐T3 and 7050‐T6 aluminum alloys, tested at different stress ratio values. SSY conditions are shown to dominate when Δδe/Δδt ≥ 79% and ≥78% for titanium and the two aluminum alloys, respectively. In addition, LSY can be established when Δδe/Δδt ≤ 66.3% and ≤67.2% for titanium and for 2024‐T3 and 7050‐T6 aluminum alloys, respectively. Transition or LSY conditions are more probable in fatigue tests conducted at low R ratio and for crack lengths above 40% with respect to the width of the specimen.

show abstract

Section: Introductionmentioning

confidence: 99%