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Fracture Strength Evaluation of Piezoelectric Ceramics by Fracture Mechanics Parameter
Japanese Journal of Applied Physics, 1983A fracture mechanics approach to evaluate the flexural strength of commercially available piezoelectric ceramic plate has been proposed. A thickness dependence of flexural strength of the ceramic plate has been measured and discussed. Not only a representative flexural strength of the ceramic plate but also the thickness dependence can be accurately
Hiroaki Niitsuma, Noriyoshi Chubachi
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Inversion of Fracture Parameters from Tiltmeter Measurements During Hydraulic Fracturing
Proceedings, 2013Ground deformation measured by high sensitive tiltmeters had been successfully applied to inverse subsurface hydraulic fracture parameters, such as location, orientation, dip and volume, etc. The conventional inversion approach based on the gradient method has a relatively limited convergent region, and could trap into a local optimum when given a ...
H.L. Zhang, C. He, Y.Y. Tan
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Fracture of Corn Endosperm in Bending Part I. Fracture Parameters
Transactions of the ASAE, 1982ABSTRACT TWO fracture parameters were determined for corn horny endosperm as influenced by moisture content and temperature. Kernels were cut into beam-shaped speciments and stressed in simple 3-point loading. Stress concentrations were varied by placing notches of several depths at the center of the tension side. Fracture toughness and critical stress
null L. A. Balastreire +3 more
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Evaluation of Fracture Parameters for Stochastic Generation of Fracture Networks
1997The subsurface storage of industrial residues in coal mines underneath densely populated urban areas is important for waste disposal in North-Rhine-Westfalia, Germany. The residues from electric energy plants exist as filter ashes and desulphurization residues which are injected behind the long wall faces of coal mines.
K. Witthüser, Th. Himmelsbach
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Comparison of Fracture Parameters of Concrete Using Nonlinear Fracture Models
2010It is well known that all important nonlinear fracture models can capture adequately the structural size effect over the useful range of applicability. The size-effect study of various fracture parameters obtained from two-parameter fracture model, size-effect model, effective crack model, double-K fracture model, and double-G fracture model with ...
Shailendra Kumar, Sudhirkumar V. Barai
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Anisotropy parameters for fractured shales
Second International Meeting for Applied Geoscience & Energy, 2022Leon Thomsen, Colin Sayers
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On Evaluation of Fracture Parameters in Statistical Fracture Mechanics
1995Statistical fracture mechanics includes models of both instantaneous and slow crack growth. The instantaneous crack growth models yield criteria of crack instability, the slow crack growth models result in probabilistic estimates of times to failure. A short reference to models both types is presented below.
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Fracture Mechanics Parameters and Fracture Process Zone of Concrete
1987The initiation and propagation of a continuous crack in concrete occurs after the formation at the crack front of a fracture process zone the size of which is not negligible compared to structural dimensions. The results of experimental observations are reported and proposed techniques for the analysis of crack propagation in concrete through nonlinear
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Experimental methods for determining fracture process zone and fracture parameters
Engineering Fracture Mechanics, 1990Abstract For quasi-brittle materials like concrete, rock and ceramic it is not possible to determine fracture toughness using laboratory-sized specimens and linear elastic fracture mechanics. This inapplicability of the conventional fracture mechanics is due to fracture process zone, R- curve type of behavior and precritical stable crack ...
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
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