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Surface thermodynamics of cracks
Surface Science Reports, 2012Abstract Although a crack is a typical detail of a real solid, the theory of cracks in surface science was reduced to studying flat-parallel slits for a long time. The last decade has brought a number of new results related to the thermodynamic and surface science fundamentals of wedge-shaped cracks including the crack line tension.
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Ultrasonic sizing of short surface cracks
Ultrasonics, 2007This paper presents a method for ultrasonic sizing of surface cracks based on time domain and frequency domain Rayleigh wave near-field analysis. The procedure allows for the entire range of ratio of crack depth to Rayleigh wavelength a/lambda to be covered with one single measurement. In the time domain the time-of-flight method was extended to cracks
Masserey B, Mazza E
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Application of Surface Crack Analysis System "SCAN" To Cracks at Hole
Proceedings of the 1992 Annual Meeting of JSME/MMD, 2002The authors have proposed an influence function method by which stress intensity factor, K, of surface cracks can be calculated easily for arbitrarily distributed surface stresses. They have developed the database of influence coefficients, Kij, for various types of surface cracks through a series of finite element analyses.
Nagatoshi Seki +4 more
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Highly Parallel Surface Crack Simulation
2011 Eighth International Conference Computer Graphics, Imaging and Visualization, 2011We show a parallel surface crack generation algorithm based on physical method that runs mostly on the GPU. According to existing physically correct surface crack generation, our algorithm firstly proposes a new data structure from the given set of points and triangles, and then computes where the crack should show up, and finally defines how the mesh ...
Shuji Hao +4 more
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Physics World, 1997
Earthquakes are the most frequent and dramatic reminders that our planet is a dynamic geological system. This violent shaking of the ground during an earthquake is caused by a catastrophic release of elastic strain that has accumulated over hundreds of years.
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Earthquakes are the most frequent and dramatic reminders that our planet is a dynamic geological system. This violent shaking of the ground during an earthquake is caused by a catastrophic release of elastic strain that has accumulated over hundreds of years.
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Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1959
Abstract The sodium vapour etching experiments of Andrade & Tsien (1937) were repeated with chemical Pyrex glass. By employing a ball indenter in conjunction with the vapour etching, it was possible to determine with greater accuracy the real nature of the surface cracks that were developed.
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Abstract The sodium vapour etching experiments of Andrade & Tsien (1937) were repeated with chemical Pyrex glass. By employing a ball indenter in conjunction with the vapour etching, it was possible to determine with greater accuracy the real nature of the surface cracks that were developed.
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The geometry of surface cracks
Applied Scientific Research, 1960The question of the cracking of thin surface layers or coatings arises in a number of different applications. For example, it occurs in enamel and other protective coatings due to stresses set up by cooling and is also observed in the stress crazing of plastics. Cracking o f surface coatings is also important in connection with thermal shock.
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Fatigue crack growth of surface cracks in the rail web
Theoretical and Applied Fracture Mechanics, 1989Abstract The analytical prediction of surface cracks in the rail web is investigated by two different approaches. The first approach uses engineering fracture mechanics principles with elementary beam theory (i.e., one dimensional) stress analysis. The second approach applies the strain energy density criterion to a three dimensional finite element ...
D.Y. Jeong, O. Orringer
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Estimates of Crack-Driving Force in Surface-Cracked Elbows
Journal of Pressure Vessel Technology, 2000The objective of this effort was to assess whether a simple relationship could be developed between the behavior of surface cracks in straight pipe and in elbows. If such a geometric relationship could be developed, then a simple multiplier could be applied to the current straight-pipe solutions that are already used in codes and standards such as the ...
Gery M. Wilkowski +2 more
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Interacting multiple cracks with complicated crack surface conditions
International Journal of Fracture, 1996In solving multiple cracks problems for the strong crack interactions, crack surfaces that are not always open even under remote tension loading, some crack surfaces may contact or even partially contact.
Han Xueli, Wang Tzuchiang
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