Inertia effect on thermal shock by laser beam shot

Kogawa, Hiroyuki; Futakawa, Masatoshi; Isikura, S.; Kikuchi, Kenji; Hino, Ryutaro; Eto, Minoru

doi:10.1016/s0734-743x(00)00034-8

Cited by 3 publications

(5 citation statements)

References 8 publications

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“…For example, the spallation target system, which is a next-generation neutron source, is an example of severe loading conditions [23]. A beam window, a stainless steel target container, and solid tungsten target plates are used in the spallation target system.…”

Section: Resultsmentioning

confidence: 99%

Importance of Inertia Term in Dynamic Crack Problems Considering Lord–shulman Theory of Thermoelasticity

Tehrani

Hosseini-Godarzi

Tavangar

2005

Journal of Thermal Stresses

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A numerical technique is presented for the accurate calculation of stress intensity factors as a function of time for generalized coupled thermoelastic problems. In this task, the effect of the inertia term is investigated, considering different theories of thermoelasticity, and its importance is shown.A boundary element method using the Laplace transform in time domain is developed for the analysis of fracture mechanics; dynamic coupled thermoelasticity problems with relaxation time are considered in the two-dimensional finite domain. The Laplace transform method is applied to the time domain and the resulting equations in the transformed field are discretized using the boundary element method. Actual physical quantities in the time domain are obtained using the numerical inversion of the Laplace transform method.The singular behavior of the temperature and displacement fields in the vicinity of the crack tip is modeled by quarter-point elements. The thermal dynamic stress intensity factor for mode I is evaluated using the J-integral method. The accuracy of the method is investigated through comparison of the results with the data available in literature.The J integral, which represents the dynamic energy release rate for propagating cracks, contains a boundary integral and a domain integral. The boundary integral contains strain energy, tractions, and strains whereas the domain integral contains inertia and strains. The J-integral method allows these two terms to be calculated separately. In this way, the importance of each term may be investigated by considering different theories of dynamic thermoelasticity.

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Section: Resultsmentioning

confidence: 99%

Importance of Inertia Term in Dynamic Crack Problems Considering Lord–shulman Theory of Thermoelasticity

Tehrani

Hosseini-Godarzi

Tavangar

2005

Journal of Thermal Stresses

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show abstract

“…For example, the spallation target system, which is a nextgeneration neutron source, is an example of sever loading conditions [24]. A beam window, a stainless steel target container and, solid tungsten target plates are used in the spallation target system.…”

Section: Resultsmentioning

confidence: 99%

Dynamic crack analysis under thermal shock considering Lord–Shulman theory

Tehrani

Hosseini-Godarzi

2004

International Journal of Thermal Sciences

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“…The method developed also permits us to study crack behaviors in layered body with finite dimensions in which the non‐Fourier effect and inertia effect are much more pronounced, especially in the case of small‐size or small‐time scales . Apart from a few rapports in the literature , experimental results on these non‐classical effects are still rare. All these aspects can be investigation directions in future works.…”

Section: Discussionmentioning

confidence: 99%

“…where 2,3,4) are unknown parameters to be determined. Now we introduce the following density function in Laplace space:…”

Section: Temperature Fieldmentioning

confidence: 99%

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Inertia effect analysis of a half‐plane with an induced crack under thermal loading using hyperbolic heat conduction

Abdelmoula

et al. 2015

Z Angew Math Mech

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This paper considers the crack problem for a semi-infinite plate subjected to a thermal shock by using hyperbolic heat conduction equations and equations of motion. The Laplace transform and Fourier transform are used to reduce the problem to a system of singular integral equations which are solved numerically. Numerical results are presented illustrating the influence of non-Fourier effect and inertia effect on the stress intensity factor and normalized crack opening displacements. The results show that the stress intensity factors have higher amplitude and an oscillating feature comparing to those obtained under the conventional Fourier thermal conduction condition and quasi-static hypothesis. These results can help understand the crack behaviors of advanced materials under thermal impact loading.

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Inertia effect on thermal shock by laser beam shot

Cited by 3 publications

References 8 publications

Importance of Inertia Term in Dynamic Crack Problems Considering Lord–shulman Theory of Thermoelasticity

Importance of Inertia Term in Dynamic Crack Problems Considering Lord–shulman Theory of Thermoelasticity

Dynamic crack analysis under thermal shock considering Lord–Shulman theory

Inertia effect analysis of a half‐plane with an induced crack under thermal loading using hyperbolic heat conduction

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