Results 251 to 260 of about 455,767 (302)

End-Stage Ankle Osteoarthritis: Exploring the Precedent Causes and Time Course of Joint Degeneration. [PDF]

open access: yesJB JS Open Access
de Cesar Netto C   +7 more
europepmc   +1 more source

Fracture energy and fracture process zone

Materiaux Et Constructions, 1992
The fracture energy Gf can be determined following a RILEM recommendation. However, it has been found that fracture energy depends on both size and geometry of the test specimen. The underlying fictitious crack model postulates that fracture energy, tensile strength, the critical opening of the fictitious crack, and the shape of the softening curve ...
X. -Z. Hu, F. H. Wittmann
exaly   +2 more sources

Energy Dissipation in Dynamic Fracture

Physical Review Letters, 1996
Measurements in PMMA of both the energy flux into the tip of a moving crack and the total surface area created via the microbranching instability indicate that the instability is the main mechanism for energy dissipation by a moving crack in brittle, amorphous material. Beyond the instability onset, the rate of fracture surface creation is proportional
, Sharon, , Gross, , Fineberg
openaire   +2 more sources

Fracture surface energy of olivine

pure and applied geophysics, 1978
A relatively simple indentation technique for the rapid measurement of fracture surface energy, Γ, of small samples is described. The reliability of this technique is assessed by testing soda-lime glass for which there are good independent fracture mechanics determinations of fracture surface energy.
M. V. Swain, B. K. Atkinson
openaire   +1 more source

The fracture energy of bimaterial interfaces

Materials Science and Engineering: A, 1990
This article describes a framework applicable to the measurement and interpretation of the fracture energy of bimaterial interfaces. A major conclusion of this study is that the fracture energy, Γi, is not unique and usually exhibits values substantially larger than the thermodynamic “work of adhesion. ” The lack of uniqueness is related to mode mixity
A.G. Evans   +3 more
openaire   +1 more source

On the energy of electroelastic fracture

ZAMP Zeitschrift f�r angewandte Mathematik und Physik, 1995
In an attempt to give a solution to a controversy existing in the literature for the generalization of the Rice \(J\)-integrals to electroelasticity, the authors reconsider the problem in a more general context. Two formulations of the theory of electroelasticity are proposed, giving rise to two distinct energy release rates, and therefore two distinct
Dascalu, C., Maugin, G. A.
openaire   +2 more sources

On the Energy of Dynamic Fractures

International Journal of Nonlinear Sciences and Numerical Simulation, 2012
Abstract The validity of the constant propagation fracture energy postulation for dynamic fracture is discussed. As shown from existing direct and indirect experimental results, this assumption may not represent the physical reality. For spontaneous fractures, the fracture energy was shown to increase linearly with the crack length, and ...
Kaiwen Xia   +2 more
openaire   +1 more source

Imaging of low-energy vertebral fractures

Radiología (English Edition), 2023
Low-energy vertebral fractures pose a diagnostic challenge for the radiologist due to their often-inadvertent nature and often subtle imaging semiology. However, the diagnosis of this type of fractures can be decisive, not only because it allows targeted treatment to prevent complications, but also because of the possibility of diagnosing systemic ...
A J, Láinez Ramos-Bossini   +4 more
openaire   +2 more sources

Fracture energy and fracture toughness of concrete

Magazine of Concrete Research, 1994
The stress intensity factor for a specimen used for fracture toughness testing of cementitious materials was obtained by the finite element method using isoparametric representations and two energy approaches. A range of specimen geometrise were considered and the critical strain energy release rate Gc, and critical value of an energy integral Jc were
openaire   +1 more source

Fracture energy of Si3N4

Journal of Materials Science, 1985
The fracture energy of Si3N4 made by hot pressing, reaction sintering, and chemical vapour deposition (CVD) was studied. Extrapolation of fracture energies to zero additive or porosity levels, as well as analysis of CVD Si3N4 all indicate an intrinsic fracture energy of 20–30J m−2.
R. W. Rice   +4 more
openaire   +1 more source

Home - About - Disclaimer - Privacy