Rapid Transit Developments In Toronto

Inglis, Jeff

doi:10.1109/t-aiee.1951.5060556

Cited by 2 publications

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 as G/G c versus q/c with c ¼ 0, the Irwin solution, giving a lower bound and c=c ¼ 32=27 giving the upper bound for G = G c at q/c = c=c in Eq. (5). As shown in Fig.…”

Section: Fracture In Soft Solidsmentioning

confidence: 82%

See 1 more Smart Citation

The Griffith Medal Lecture: The fracture mechanics of soft solids

Williams

2015

Engineering Fracture Mechanics

View full text Add to dashboard Cite

“…2 as G/G c versus q/c with c ¼ 0, the Irwin solution, giving a lower bound and c=c ¼ 32=27 giving the upper bound for G = G c at q/c = c=c in Eq. (5). As shown in Fig.…”

Section: Fracture In Soft Solidsmentioning

confidence: 82%

“…The A useful model of these effects is the linear elastic analysis of a blunt crack of length, a, and a tip radius q subjected to a stress r. The stress at a distance r from the crack tip is given by Inglis [5],…”

Section: Fracture In Soft Solidsmentioning

confidence: 99%

The Griffith Medal Lecture: The fracture mechanics of soft solids

Williams

2015

Engineering Fracture Mechanics

View full text Add to dashboard Cite

“…Light scattering in crack tips can also contribute to the strain whitening. For microscopic cracks, Gent [39] investigated the expression developed by Inglis [40] (Equation 2) to calculate the stress concentration factor (k) in terms of the crack length (l) and the tip radius (r). Gent explains that the most severe edge flaws which might occur by chance in smooth machined surfaces, would be about 100 µm long and about 10Å in tip radius.…”

Section: Introductionmentioning

confidence: 99%

Links between surface morphology changes and damage in a toughened epoxy adhesive

Trimiño

Cronin

2021

The Journal of Adhesion

View full text Add to dashboard Cite

Owing to the increased use of toughened epoxy adhesives in current transportation light weighting efforts, it is critical that the damage mechanisms observable as strain whitening in these materials are understood and quantified. Quantification of damage is needed for finite element constitutive models used in structural design; however, thin bond lines in adhesive joints limit direct observation of the adhesive. In this study, microscope observations of bulk material specimens subjected to tensile loading were linked to strain whitening and damage in a toughened epoxy adhesive. Cracks on the surface were observed to open during loading, with strain whitening at the crack tips and with the initiation and propagation of shear bands. The stresses approximated at the crack tips suggested that particle cavitation could be occurring in these regions. Image analysis showed that strain whitening was present at crack tips and that these areas served to initiate the shear-bands. Changes in tensile specimen stiffness and strength were evaluated during load-unload and reload testing, and were linked to the presence of crack growth, as well as the formation of shear bands. Considering changes in strength, the predicted damage level before failure (D~18%) was lower than that predicted using traditional load-unload stiffness (D~35%), attributed to short-term viscoelastic effects; however, damage calculated from load-reload material stiffness (D~19%) was in good agreement with the damage estimated from changes in strength. A new approach, calculating damage from direct image analysis of strain whitening on the free surface (D~21%) was in good agreement with damage quantified by changes in strength and stiffness, with the benefit of quantifying damage over the loading history of the test sample and identifying areas of damage localization.

show abstract

Rapid Transit Developments In Toronto

Cited by 2 publications

References 1 publication

The Griffith Medal Lecture: The fracture mechanics of soft solids

The Griffith Medal Lecture: The fracture mechanics of soft solids

Links between surface morphology changes and damage in a toughened epoxy adhesive

Contact Info

Product

Resources

About