Evaluation of Thermal Stresses Induced in Anisotropic Material During Thermal Shock

Ishihara, Sotomi; Goshima, Takahito; Iwawaki, Shoji; Shimizu, Masayoshi; Kamiya, S.

doi:10.1080/01495730290074351

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…The integral in the Equation 1 When the material is isotropic, the thermal stress that was evaluated by Equation (1) was validated by the finite element method analysis (FEMA). In the FEMA, the actual three-dimensional specimen shape and dimensions and the temperature distribution in the specimen height direction were taken into a consideration [8].…”

Section: B) Evaluation Of Thermal Stress Caused In the Rts Testsmentioning

confidence: 99%

Crack Growth Behavior in Cemented Carbide by Repeated Thermal Shock

Ishihara¹,

Shibata²,

Masuda³

et al. 2018

MSA

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In this study, fatigue crack growth (FCG) behavior of cemented carbide under the repeated thermal shock (RTS) was experimentally evaluated by using the thermal-shock experiment method developed by the authors. Tests were carried out using cemented carbide having two different WC crystal grain sizes. In addition, FCG behavior under rotating bending fatigue (RBF) test was investigated using the same cemented carbides. Then the FCG results obtained by the RTS test and the results of the RBF test obtained at stress ratio, R = −1, were compared with each other. Here, the stress ratio R is defined as, R = σ min /σ max ; σ min and σ max are the minimum and the maximum stresses, respectively. From this comparison, it was found that the relation between the rate of fatigue crack growth (FCG) and the maximum stress intensity factor in the RTS tests was equivalent to the one obtained under the RBF tests at stress ratio of −1. From a practical point of view, this result is important as it indicates that it is not necessary to purposely perform RTS experiments. In this research, the effect of WC grain size on the short surface FCG behavior of the cemented carbide was also studied and discussed.

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Section: B) Evaluation Of Thermal Stress Caused In the Rts Testsmentioning

confidence: 99%

Crack Growth Behavior in Cemented Carbide by Repeated Thermal Shock

Ishihara¹,

Shibata²,

Masuda³

et al. 2018

MSA

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“…Ishihara et al [20] evaluated thermal stresses in an anisotropic material during thermal shock. Kumar and Rani [21] investigated the disturbance due to mechanical and thermal sources in a generalized orthorhombic thermoelastic material.…”

Section: Introductionmentioning

confidence: 99%

Thermal Disturbances in Twinned Orthotropic Thermoelastic Material

Rani

Singh

2018

International Journal of Applied Mechanics and Engineering

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This paper deals with deformation in homogeneous, thermally conducting, single-crystal orthotropic twins, bounded symmetrically along a plane containing only one common crystallographic axis. The Fourier transforms technique is applied to basic equations to form a vector matrix differential equation, which is then solved by the eigen value approach. The solution obtained is applied to specific problems of an orthotropic twin crystal subjected to triangular loading. The components of displacement, stresses and temperature distribution so obtained in the physical domain are computed numerically. A numerical inversion technique has been used to obtain the components in the physical domain. Particular cases as quasi-static thermo-elastic and static thermoelastic as well as special cases are also discussed in the context of the problem.

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“…There is a general class of problem involving interfacial mechanical deformation in composite materials owing to coefficient of thermal expansion mis-match, which can generate internal stresses that are often sufficient to cause local internal damage or even complete fracture. These stresses cannot be measured by conventional techniques and therefore are poorly understood (Ishihara et al, 2002). In order to improve the understanding of these composite structures, internal stress distributions and internal fracture processes need to be studied non-destructively and in situ.…”

Section: Introductionmentioning

confidence: 99%

A novel high-temperature furnace for combinedin situsynchrotron X-ray diffraction and infrared thermal imaging to investigate the effects of thermal gradients upon the structure of ceramic materials

Robinson¹,

Brown²,

Jervis³

et al. 2014

J Synchrotron Radiat

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A novel high-temperature furnace for combined in situ synchrotron X-ray diffraction and infrared thermal imaging to investigate the effects of thermal gradients upon the structure of ceramic materials A new technique combining in situ X-ray diffraction using synchrotron radiation and infrared thermal imaging is reported. The technique enables the application, generation and measurement of significant thermal gradients, and furthermore allows the direct spatial correlation of thermal and crystallographic measurements. The design and implementation of a novel furnace enabling the simultaneous thermal and X-ray measurements is described. The technique is expected to have wide applicability in material science and engineering; here it has been applied to the study of solid oxide fuel cells at high temperature.

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Evaluation of Thermal Stresses Induced in Anisotropic Material During Thermal Shock

Cited by 6 publications

References 16 publications

Crack Growth Behavior in Cemented Carbide by Repeated Thermal Shock

Crack Growth Behavior in Cemented Carbide by Repeated Thermal Shock

Thermal Disturbances in Twinned Orthotropic Thermoelastic Material

A novel high-temperature furnace for combinedin situsynchrotron X-ray diffraction and infrared thermal imaging to investigate the effects of thermal gradients upon the structure of ceramic materials

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