Results 1 to 10 of about 7,622 (110)

Effects of microstructure and crystallography on crack path and intrinsic resistance to shear-mode fatigue crack growth [PDF]

open access: yesFracture and Structural Integrity, 2015
The paper focuses on the effective resistance and the near-threshold growth mechanisms in the ferritic-pearlitic and the pure pearlitic steel. The influence of microstructure on the shear-mode fatigue crack growth is divided here into two factors: the ...
J. Pokluda   +3 more
doaj   +4 more sources

On the connection between mode II and mode III effective thresholds in metals [PDF]

open access: yesFracture and Structural Integrity, 2017
Closure-free long cracks under the remote mode III loading grow in a more complicated way than those under the remote mode II. For bcc metals, a coplanar in-plane spreading of tongues driven by the local mode II loading components at crack-front ...
Tomas Vojtek   +2 more
doaj   +2 more sources

3D Analyses of crack propagation in torsion [PDF]

open access: yesFracture and Structural Integrity, 2015
The initiation and propagation of fatigue cracks during cyclic torsion loading was studied in a cast Al alloy (A357) with a relatively large (~500 ?m) grain size.
D. Shiozawa   +5 more
doaj   +2 more sources

Variable mode-mixity during fatigue cycles – crack tip parameters determined from displacement fields measured by digital image correlation [PDF]

open access: yesFracture and Structural Integrity, 2017
This paper focusses on discussing equivalent stress intensity factors and kink angles after a change of mode-mixity from one cycle to the next and when the mode-mixity changes continuously during the fatigue cycles.
Michael Vormwald   +4 more
doaj   +3 more sources

Analysis of Mixed-Mode I/II/III Fracture Toughness Based on a Three-Point Bending Sandstone Specimen with an Inclined Crack

open access: yesApplied Sciences, 2021
The crack-propagation form may appear as an arbitrary mixed-mode fracture in an engineering structure due to an irregular internal crack. It is of great significance to research the mixed-mode fracture of materials with cracks.
Xin Pan   +4 more
doaj   +1 more source

Crack front segmentation under combined mode I- and mode IIIloading [PDF]

open access: yesFracture and Structural Integrity, 2016
This article approaches the topic of crack initiation and crack growth behaviour under combined mode I- and mode III-loading conditions. Such loading combinations especially lead to a crack, which unscrew out of its initial orientation and segments into ...
A. Eberlein, H. A. Richard
doaj   +2 more sources

Experimental study on 3D internal penny‐shaped crack propagation in brittle materials under uniaxial compression

open access: yesDeep Underground Science and Engineering, 2023
Fractures are widely present in geomaterials of civil engineering and deep underground engineering. Given that geomaterials are usually brittle, the fractures can significantly affect the evaluation of underground engineering construction safety and the ...
Jiyun Xu   +3 more
doaj   +1 more source

Averaged strain energy density estimated rapidly from the nodal stresses by FEM for cracks under mixed mode loadings including the T-stress contribution

open access: yesFracture and Structural Integrity, 2019
The present contribution reviews a recently proposed method to rapidly estimate the averaged SED at the tip of short as well as long cracks under in-plane I+II and long cracks under out-of-plane I+III mixed mode loadings.
Giovanni Meneghetti   +2 more
doaj   +3 more sources

Cracking Characteristics and Mechanism of Internal Components of Large-Span Shield Tunnel

open access: yesAdvances in Civil Engineering, 2023
With the ever-increasing number of large-span shield tunneling projects and the extended operational time, their distinctive internal component issues are becoming more pronounced and exhibiting unique characteristics.
Fei Dong   +4 more
doaj   +1 more source

Fatigue Crack Growth under Non-Proportional Mixed Mode Loading in Rail and Wheel Steel Part 2: Sequential Mode I and Mode III Loading

open access: yesApplied Sciences, 2019
Rolling contact fatigue cracks in rail and wheel undergo non-proportional mixed mode I/II/III loading. Fatigue tests were performed to determine the coplanar and branch crack growth rates on these materials.
Makoto Akama, Akira Kiuchi
doaj   +1 more source

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