Ligament size effect in largely cracked tensile structures

Sapora, Alberto Giuseppe; Ferrian, Francesco; Cornetti, Pietro; Talebi, Hossein; Ayatollahi, M.R.

doi:10.1016/j.tafmec.2023.103871

Cited by 6 publications

(1 citation statement)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Exploring the scientific literature, (Berto et al 2013) and (Cicero et al 2018) obtained a value of KIc = 2.04 MPam testing Single edge Notch Bending (SENB) specimens containing Ushaped notches. Similarly, (Taylor 2007) and (Sapora et al 2023) observed high values of the fracture toughness equal to 2.23 MPam and 2.15 MPam respectively. (Seweryn et al 1997) and (Seweryn and Łukaszewicz 2002), considering V-notched samples, respectively found KIc = 1.37 MPam and KIc = 1.202 MPam.…”

Section: Crack Initiationmentioning

confidence: 80%

Failure assessment of eccentric circular holes under compressive loading

Ferrian,

Sapora,

Estevez

et al. 2024

Preprint

Self Cite

View full text Add to dashboard Cite

The present work aims to investigate the failure size effect on flattened disks containing an eccentric circular hole under mode I loading conditions. For this purpose, uniaxial compression tests are carried out on polymethyl methacrylate (PMMA) samples with holes. Depending on the hole radius and eccentricity, the energy release rate is either an increasing or decreasing function of the crack length, thus affecting the stability of crack propagation. Experimental results are interpreted and discussed through the coupled stress and energy criterion of Finite Fracture Mechanics. The approach lies on the assumption of a finite crack advance and it is implemented through the numerical estimation of the stress field and the Incremental Energy Release Rate functions. Finally, stability and crack speed propagation are discussed under the assumption of Linear Elastic Fracture Mechanics. Theoretical predictions reveal in agreement with experimental results thus demonstrating that the Coupled Criterion effectively captures the failure condition.

show abstract