Results 251 to 260 of about 355,356 (281)

The fracture resistance of dental materials

Journal of Oral Rehabilitation, 1995
summary A novel test procedure was developed that provides the basis for a standard plain strain fracture toughness test to evaluate fracture resistance of resin‐based materials. This procedure utilizes a notched disc specimen. Using this technique, a new concept of‘Torque to initiate fracture (T)’was suggested.
S, Uctasli, E, Harrington, H J, Wilson
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Fracture resistance of notched specimens

Engineering Fracture Mechanics, 1981
Abstract This paper gives a theoretical approach to the general problem of the static fracture resistance in the presence of stress concentrations. First of all, an approaching calculation model is proposed for elastic and plastic stress in the reduced section of a circumferentially notched cylindrical bar.
G. Valentin, G. Gasc
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Fracture Evaluation from Quantitative Azimuthal Resistivities

SPE Annual Technical Conference and Exhibition, 1993
Abstract The ARI* Azimuthal Resistivity Imager is a standard laterolog equipped with an additional segmented electrode. This segmented electrode provides twelve deep calibrated azimuthal resistivity measurements. As any electrical device, the ARI tool is sensitive to fractures filled with conductive fluid.
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Fracture Resistance Testing

2003
Abstract This article briefly describes the historical development of fracture resistance testing of polymers and reviews several test methods developed for determining the fracture toughness of polymeric materials. The discussion covers J-integral testing, the methods for determining linear elastic fracture toughness, testing of thin ...
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Fracture Resistance of Pipeline Weldments

Canadian Metallurgical Quarterly, 1980
AbstractThe fracture properties of weldments in line-pipe steels are reported. Both seam welds and girth welds are considered and the steels tested include Gr: 65 (commercial), Gr. 70 (commercial) and Gr. 100 (experimental). Comparisons are made among the different steels and welding consumables which were investigated and, where possible, the results ...
J. T. McGrath, M. J. Godden, J. Gordine, J. D. Boyd   +3 more
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Fracture Resistance of Structural Alloys

1996
Abstract Fracture mechanics is a multidisciplinary engineering topic that has foundations in both mechanics and materials science. This article summarizes the microstructural aspect of fracture resistance in structural materials. It provides a discussion on basic fracture principles and schematically illustrates the mechanism of crack ...
K.S. Ravichandran, A.K. Vasudevan
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Fracture Resistance in Line Pipe

Journal of Engineering for Industry, 1965
The program of research on line pipe under the sponsorship of the A.G.A. Pipeline Research Committee is a comprehensive effort to investigate the important properties of pipe used in gas transmission. Several different phases are involved in this project, ranging from fundamental laboratory studies to fracture-behavior experiments on large-diameter ...
R. J. Eiber, A. R. Duffy, G. M. McClure
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Resistance of Hardmetals to Fracture

Powder Metallurgy, 1998
Abstract Strength of WC and TiC base hardmetals and their durability in metalforming (blanking) operations have been investigated. It has been shown that transverse rupture strength R TZ, critical stress intensity factor K Ic, and ultimate plastic strain ep as individual properties do not enable exact estimation of the resistance of hardmetals to ...
H. Reshetnyak, J. Kübarsepp
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Fracture Resistance of Human Amnion

ASME 2007 Summer Bioengineering Conference, 2007
While normal delivery requires disruption of the placental membranes (the “breaking of waters”), in one third of premature births delivery results from with mechanical rupture of the placental membranes prior to full-term gestation [1]. The biomechanical investigation of membrane rupture has thus been a subject of recent study [2–5].
Michelle L. Oyen, Virginia L. Ferguson, Steven E. Calvin   +2 more
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Fracture Resistance of Railroad Wheels

1974
The effects of manufacturing method, chemical composition, heat treatment, temperature, and loading rate on the plane strain fracture toughness KIC of railroad wheels have been determined. Carbon content of the wheels is shown to be the principal factor which controls their toughness.
Carter, C. S., Caton, R. G., Volpe National Transportation Systems Center   +2 more
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