Results 251 to 260 of about 461,714 (297)

Thermal Crack Propagation

Journal of Basic Engineering, 1971
This study is concerned with the application of Griffith fracture theory to crack propagation induced by thermal means. The stress-strain field around an insulated crack, situated perpendicular to a uniform flow of heat in an elastic medium, is extracted from an isothermal configuration in which the crack surfaces are subjected to linear shear stresses.
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Spherically propagating thermal polymerization fronts

Journal of Polymer Science Part A: Polymer Chemistry, 2006
AbstractWe demonstrate for the first time spherically propagating frontal polymerization that also exhibits spin modes. We have developed an interesting system using the amine‐catalyzed Michael addition of a trithiol to a triacrylate to create a rubbery gel. The gel suppresses convection and bubble formation during front propagation. A peroxide is also
Binici, Burcu, Fortenberry, Dionne I., Leard, Kayce C., Molden, Marcus, Olten, Nesrin, Popwell, Sam, Pojman, John A.   +6 more
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Thermally activated crack propagation ? theory

International Journal of Fracture, 1977
Steady state crack propagation in solids is analyzed as a thermally activated process. The fracture mechanics concept of a crack driving force is formally introduced to molecular rate theory. This representation of crack propagation appears to be, in many aspects, similar to that of the motion of a dislocation under a shear stress across thermal ...
J. C. Pollet, S. J. Burns
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THERMAL WAVES PROPAGATION IN POROUS MATERIAL UNDERGOING THERMAL LOADING

Structural Stability and Dynamics, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Transition from Thermal Runaway to Propagating Flames

SIAM Journal on Applied Mathematics, 1991
Summary: In analysing thermal runaway in reactive-diffusive systems, it can be seen that diffusion and conduction become significantly reduced in importance towards the final stages. As a result, these diffusive effects play a negligible role in the early structure of the reaction waves that finally emerge from an ignition kernel.
Henderson, KL, Dold, JW
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Energy propagation of thermal waves

European Journal of Physics, 2006
Although waves are ubiquitous in nature it is difficult to give a precise and unambiguous definition of what a wave is. Actually the distinction between wave-like and non-wave-like behaviour can be fuzzy, as it is the case of a solid sample excited by a periodic heat source.
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Propagation analysis for thermal modeling

IEEE Transactions on Components, Packaging, and Manufacturing Technology: Part A, 1998
Propagation analysis was originally developed as a tool for the analysis of the transmission line matrix (TLM) numerical technique and its relationship to other numerical methods for heat-flow. It provides a useful alternative to the conventional frequency-domain methods for analyzing parabolic differential equations. This paper outlines the details of
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Flame propagation on thermal ignition

Combustion and Flame, 1969
Abstract An optical study has been made of the thermal ignition of a mixture containing 16·7 per cent methane and 83·3 per cent oxygen in the temperature range 520° to 750°C and at a total pressure of 600 torr. Ignition was observed to commence in the gas phase at a point close to the centre of the cylindrical explosion vessel and was followed by ...
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High-power laser propagation: Thermal blooming

Proceedings of the IEEE, 1977
This paper presents a tutorial review of the self-induced thermal distortion of laser radiation propagating in absorbing media. The distortion of the laser beam is the result of heating of the path by absorption of a small fraction of the laser beam power by the medium which changes the index of refraction and therefore distorts the beam.
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Propagation of a Nonspherical Thermal Wave

Journal of Applied Physics, 1972
A radiative diffusion problem which gives rise to a wave front with two-dimensional structure is considered. Particular emphasis is placed on the description of the wave front resulting from a point source of energy liberated instantaneously at the interface between two homogeneous half-spaces.
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