Crack paths under mixed mode loading

Yates, J. R.; Zanganeh, M.; Tomlinson, R. A.; Brown, MW; Díaz-Garrido, Francisco-Alberto

doi:10.1016/j.engfracmech.2007.05.014

Cited by 58 publications

(31 citation statements)

References 36 publications

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“…8. In previous work [11] it was shown that such geometry is difficult to model accurately using numerical techniques and thus the thermoelastic method presented here allows valuable crack tip parameter information to be determined. According to Cotterell's theory [7], since all these T-stresses are negative then the cracks are directionally stable.…”

Section: Discussionmentioning

confidence: 99%

“…These characteristics of TSA make it an effective method to be used in fatigue and fracture problems. A number of methodologies for calculating the SIF are available and were reviewed by Tomlinson and Olden [12], with further developments since the publication of the review [11,13,14]. However, little research has been published on the use of other parameters to formulate the crack tip stress state using TSA.…”

Section: Elastic Parameters Determination Using Tsamentioning

confidence: 99%

“…In recent years, thermoelastic stress analysis (TSA) has proved to be an ideal technique for the determination of mode I, mode II, and mixed SIFs [11][12][13][14][15]. Therefore the aim of this work was to develop these methodologies to determine the Tstress in addition to the SIF.…”

Section: Introductionmentioning

confidence: 99%

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T-stress determination using thermoelastic stress analysis

Zanganeh

Tomlinson

Yates

2008

The Journal of Strain Analysis for Engineering Design

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T-stress and mixed-mode stress intensity factors have been determined experimentally using thermoelastic stress analysis and using a finite element method. Pure mode I, strong mixed-mode I and II, and interacting cracks have been used as the case studies. A new technique has been proposed to identify the crack tip from thermoelastic images. It has also been shown that using three terms of Williams's stress field formulation to determine the Tstress, yields a more accurate solution than using only the first two terms of the expansion.

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Section: Discussionmentioning

confidence: 99%

Section: Elastic Parameters Determination Using Tsamentioning

confidence: 99%

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T-stress determination using thermoelastic stress analysis

Zanganeh

Tomlinson

Yates

2008

The Journal of Strain Analysis for Engineering Design

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“…A sensitivity analysis revealed a strong influence of fatigue strength and material defect distribution on the probability of fatigue failure [12]. The crack initiation occurs on the material surface or sub-surface, and the sub-surface crack initiation requires a stress concentration caused by a large material defect, such as a void or inclusion [13].…”

Section: Introductionmentioning

confidence: 99%

Influence of Different Application of Lubricants on Wear and Pre-existing Rolling Contact Fatigue Cracks of Rail Materials

et al. 2017

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Rolling contact fatigue (RCF) of rail can be a significant problem affecting safety and maintenance. Rail materials have been optimized to reduce it, but not enough is known about how friction management products applied to the rail affect crack growth. This study presents experimental results carried out to explore the influence of different lubricants and application orders on wear and preexisting RCF cracks in rail materials. The results indicate that the types or properties of lubricants have a vital role in the wear rate and fatigue crack growth characteristics of rail materials after conditioning with 5000 dry cycles to initiate cracks. Using a different application order of two lubricants has a significant influence on the crack growth angles in the rail rollers.

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“…The understanding of the mechanics of the complicated crack growth behavior is an important subject for designing structural components and machines. Thus, the evaluation and the prediction of the crack path formation have long been a topic of great concern in the field of fracture mechanics [2][3][4][5][6]. Yuse and Sano [7] reported that straight, branched, and oscillating cracks were observed in thin glass plates under thermal loads.…”

Section: Introductionmentioning

confidence: 99%