Effect of a single soft interlayer on the crack driving force

Sistaninia, M.; Kolednik, O.

doi:10.1016/j.engfracmech.2014.02.026

Cited by 53 publications

(17 citation statements)

References 55 publications

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“…These predictions are consistent with the measurements performed by Parsons on 304L austenitic stainless steel [28]. intensity factor of a branched crack can be considerably lower than that of a straight crack with the same projected length [29]. For this reason, such a branching can retard or even arrest subsequent crack growth.…”

Section: Equi-biaxial Deformationsupporting

confidence: 89%

Fatigue crack initiation and crystallographic growth in 316L stainless steel

Sistaninia

Niffenegger

2015

International Journal of Fatigue

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Section: Equi-biaxial Deformationsupporting

confidence: 89%

Fatigue crack initiation and crystallographic growth in 316L stainless steel

Sistaninia

Niffenegger

2015

International Journal of Fatigue

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“…It can be seen in Figure 9a,b that, when the cracks in the composite material layer extend to the toughening layer, it mainly propagates along the bonding interface. Due to the well bonded interface, the crack width gradually decreases, indicating that the crack driving force is reduced and the crack tip is passivated [20,21,22,23]. Thus, the crack propagation is obviously hindered.…”

Section: Resultsmentioning

confidence: 99%

The Flexural Strength and Fracture Toughness of TC4-Based Laminated Composites Reinforced with Ti Aluminide and Carbide

Fei

Niu

et al. 2017

Materials

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TiC–Ti–Al mixed powders and TC4 titanium alloy foils were overlapped layer-by-layer in the graphite die. The TC4-based laminated composite sheets reinforced by Ti aluminide and carbide were successfully fabricated via spark plasma sintering (SPS) at 1100 °C with a well-bonded interface. The composite layers were mainly composed of TiAl, Ti3Al, Ti2AlC, and Ti3AlC2 phases. The carbides particles distributed in the matrix played an important role in the deflection of cracks and the passivation of microcracks. TC4 titanium alloy layers had an obvious effect on the stress distribution during the loading process, and provided an energy dissipation mechanism, which could improve the mechanical properties of the laminated composite sheets obviously. When the theoretical amount of Ti2AlC was 20 wt %, the flexural strength and fracture toughness of the laminated composite sheets reached the maximum value in the arrester direction, which were 1428.79 MPa and 64.08 MPa·m1/2, respectively.

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“…Using the configuration shown in Figure B‐I or Figure C‐I, the crack tip stress intensity factor K tip can be calculated by J tip with the following equation:

K_{tip} = \sqrt{J_{tip} E^{'}}

where J tip is calculated with the following equation:

J_{tip} = J_{far} + C_{inh} = J_{far} - bolde \cdot \int_{\sum} ((), [[〚ϕ]〛], I, ‐ ⟦ F^{T} ⟧ (〈〉, S)) boldn italicdl = J_{far} - J_{int}

where J far is the crack driving force J ‐integral loaded in the far field, C inh represents the interface material mismatch effect on crack tip driving force. The C inh is calculated by the J ‐integral around the interface, C inh = − J int , see Figure . In the present work, the nonlinear‐elastic J ‐integral J nlel is calculated for the J ‐integral here.…”

Section: Plastic Mismatch Effect On Effective Fatigue Crack Tip Drivimentioning

confidence: 89%

“…where J far is the crack driving force J-integral loaded in the far field, C inh represents the interface material mismatch effect on crack tip driving force. The C inh is calculated by the J-integral around the interface, 38 C inh = −J int , see Figure 12. In the present work, the nonlinear-elastic J-integral J nlel is calculated for the J-integral here.…”

Section: Plastic Mismatch Effect On Nominal Fatigue Crack Tip Drivimentioning

confidence: 99%

Plastic mismatch effect on plasticity induced crack closure: Fatigue crack propagation perpendicularly across a plastically mismatched interface

Song

Shang

Shi

et al. 2018

Fatigue Fract Eng Mat Struct

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In the present work, comprehensive investigation of both theoretical analysis and numerical simulation was carried out to investigate the plastic mismatch effect on plasticity induced crack closure (PICC) behavior and effective fatigue crack tip driving force. During the process of crack tip approaching interface, crack tip load and crack tip load ratio will change, resulting in the change of PICC degree. When the crack propagates towards higher strength side, Kop/Kmax increases; when the crack propagates towards lower strength side, Kop/Kmax decreases firstly and then increases. The two mechanisms of “interface plastic mismatch effect on nominal fatigue crack tip driving force” and “interface plastic mismatch effect on PICC degree” were compared. The second mechanism must be considered when building crack tip driving force model for describing fatigue crack crossing plastically mismatched interface, because it is more physically factual and maybe more important than the first mechanism.

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Effect of a single soft interlayer on the crack driving force

Cited by 53 publications

References 55 publications

Fatigue crack initiation and crystallographic growth in 316L stainless steel

Fatigue crack initiation and crystallographic growth in 316L stainless steel

The Flexural Strength and Fracture Toughness of TC4-Based Laminated Composites Reinforced with Ti Aluminide and Carbide

Plastic mismatch effect on plasticity induced crack closure: Fatigue crack propagation perpendicularly across a plastically mismatched interface

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