Results 141 to 150 of about 679,868 (186)

Fracture Behavior of Nanoscale Notched Silicon Beams Investigated by the Theory of Critical Distances

Advanced Theory and Simulations, 2017
AbstractThis paper investigates the nanoscale fracture behavior of silicon using the Theory of Critical Distances (TCD) and demonstrates that TCD can correctly estimate the magnitude of the breakdown of continuum fracture mechanics. Moreover, it proposes the TCD as an alternative strategy for the determination of fracture toughness, KIC, at the ...
Gallo P, Yan Y, Sumigawa T, Kitamura T
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Applying the Critical Theory of Library Technology to Distance Library Services

Journal of Library & Information Services in Distance Learning, 2010
The re-envisioning of libraries as information leaders in higher education requires an examination of the decisions made in the acquisition and adoption of library technology. The Critical Theory of Library Technology offers a framework for viewing technology decisions through a social, economic and political perspective.
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The theory of critical distances and fatigue from notches in aluminium 6061

Fatigue & Fracture of Engineering Materials & Structures, 2011
ABSTRACTFatigue failure of metal components containing notches, cracks and other defects has been an active research topic for many years because of its important practical and theoretical implications. Recently, Taylor and his colleagues have re‐visited this topic and proposed the theory of critical distance (TCD), which summarizes the early work by ...
Clegg, Richard E., Duan, Kai., McLeod, Alan.   +2 more
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Analysis of fatigue failures in components using the theory of critical distances

Engineering Failure Analysis, 2005
Abstract This paper explores the use of the theory of critical distances (TCD) in the prediction of high-cycle fatigue behaviour in engineering components. Theories of this type have been in use for over 50 years in various forms, and recently have been brought up to date by linking them with linear elastic fracture mechanics (LEFM).
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Fatigue notch factors prediction of rough specimen by the theory of critical distance

International Journal of Fatigue, 2017
Abstract Analytical solutions to predict the fatigue notch factors (FNFs) of rough specimen are derived. Surface topography is reconstructed by superposing numerous cosine waves by means of Fourier transform analysis. The first-order boundary perturbation approach is used to derive the stress distribution of machined surface topography for the cases ...
Zhengkun Cheng, Ridong Liao, Wei Lu, Dandan Wang   +3 more
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Can the theory of critical distances predict the failure of shape memory alloys?

Computer Methods in Biomechanics and Biomedical Engineering, 2011
Components made from shape memory alloys (SMAs) such as nitinol often fail from stress concentrations and defects such as notches and cracks. It is shown here for the first time that these failures can be predicted using the theory of critical distances (TCDs), a method which has previously been used to study fracture and fatigue in other materials ...
Saeid, Kasiri, Daniel J, Kelly, David, Taylor   +2 more
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Critical Analysis of Conventional Educational Perspectives Inherent in Distance Education Theories

The Korean Society for the Study of Educational Principles
This paper addresses the conceptual issues and limitations of distance education theories stemming from the conventional educational perspectives inherent within them. Initially, distance education theories were anticipated as alternative educational theories capable of replacing the school-centered paradigm. However, they failed due to their inability
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S-N Curves in Pressure Vessel Steels Using Theory of Critical Distances

Volume 3: Design and Analysis, 2008
The S-N technology used in the ASME Code and similar design criteria includes both crack initiation and crack propagation phases of fatigue failure. Some of the pressure vessel construction codes have used the simplified fatigue initiation criterion based on stresses calculated at a distance of 0.05 mm from the surface crack.
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Special Issue on Critical Distance Theories of Fracture

Engineering Fracture Mechanics, 2008
David Taylor, Luca Susmel
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The theory of critical distances

Engineering Fracture Mechanics, 2008
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