Results 141 to 150 of about 4,812,338 (197)
Immediate versus delayed dental implant placement: an umbrella review protocol. [PDF]
BMJ OpenRon Canelos M +7 more
europepmc +1 more source
High-flow nasal cannula versus continuous positive airway pressure for noninvasive respiratory support in children with bronchiolitis: a meta-analysis of randomized controlled trials. [PDF]
Front PediatrWu B, Zhang Z, Pang Y.
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Failure Criteria for FRP Laminates
Journal of Composite Materials, 2005 A new set of six phenomenological failure criteria for fiber-reinforced polymer laminates denoted LaRC03 is described. These criteria can predict matrix and fiber failure accurately, without the curve-fitting parameters. For matrix failure under transverse compression, the angle of the fracture plane is solved by maximizing the Mohr-Coulomb effective ...
Carlos G. Dávila +2 more
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Comparison of rock failure criteria in predicting borehole shear failure
International Journal of Rock Mechanics and Minings Sciences, 2015 Selection of the appropriate rock failure criteria is one of the key steps in determining minimum required mud weight in wellbore stability analysis. Numerous failure criteria have been used for rock failure analysis, but there is no common agreement of ...
Runar Nygaard
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The Failure Criteria for Soils
Canadian Geotechnical Journal, 1974Analysis of experimental results using extended Tresca and extended Von Mises criteria show substantial difference between experimental and predicted values particularly when the intermediate principal stress approaches the major principal stress. Modified forms of these criteria have been suggested and examined for their validity.
T.S. Nagaraj, B.V. Somashekar
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Criteria for Failure and Fracture
2020Structural members may have geometric features (including holes, notches, and corners) that result in localized regions of high stress called stress concentrations. The ratio C of the maximum stress resulting from a stress concentration to a defined nominal stress is called the stress concentration factor.
Anthony Bedford, Kenneth M. Liechti
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Arboricultural Journal, 1993
Summary A field study of hollow tree trunks has shown an upper limit of hollowness of 70 per cent of the radius prior to failure, i.e. with a ratio of solid wall thickness t over a radius R > 0.3 tree breakage will be avoided. Wind throw has also been studied as an alternative failure mode.
Mattheck, C., Bethge, K., Erb, D.
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Summary A field study of hollow tree trunks has shown an upper limit of hollowness of 70 per cent of the radius prior to failure, i.e. with a ratio of solid wall thickness t over a radius R > 0.3 tree breakage will be avoided. Wind throw has also been studied as an alternative failure mode.
Mattheck, C., Bethge, K., Erb, D.
openaire +1 more source