Micromechanical modelling of the longitudinal compressive and tensile failure of unidirectional composites: The effect of fibre misalignment introduced via a stochastic process

2020 ◽  
Vol 203 ◽  
pp. 157-176 ◽  
Author(s):  
L.F. Varandas ◽  
G. Catalanotti ◽  
A.R. Melro ◽  
R.P. Tavares ◽  
B.G. Falzon
Keyword(s):  
Stochastic Process ◽  
Tensile Failure ◽  
Unidirectional Composites ◽  
Micromechanical Modelling

scholarly journals Key Issues in a Benchmarking Exercise for Longitudinal Tensile Failure of Unidirectional Composites

2021 ◽  
Author(s):  
C. Breite ◽  
A. Melnikov ◽  
F. Mesquita ◽  
S. Lomov ◽  
Y. Swolfs
Keyword(s):  
Tensile Failure ◽  
Unidirectional Composites ◽  
Key Issues

Blind benchmarking of seven longitudinal tensile failure models for two virtual unidirectional composites

2021 ◽  
Vol 202 ◽  
pp. 108555
Author(s):  
C. Breite ◽  
A. Melnikov ◽  
A. Turon ◽  
A.B. de Morais ◽  
F. Otero ◽  
...  
Keyword(s):  
Tensile Failure ◽  
Unidirectional Composites ◽  
Failure Models

Integrated Fractional white Noise as an Alternative to Multifractional Brownian Motion

2007 ◽  
Vol 44 (02) ◽  
pp. 393-408 ◽  
Author(s):  
Allan Sly
Keyword(s):  
Stochastic Process ◽  
Brownian Motion ◽  
White Noise ◽  
Gaussian Process ◽  
Discrete Data ◽  
Hölder Exponent ◽  
Scaling Properties ◽  
Multifractional Brownian Motion ◽  
Local Properties

Multifractional Brownian motion is a Gaussian process which has changing scaling properties generated by varying the local Hölder exponent. We show that multifractional Brownian motion is very sensitive to changes in the selected Hölder exponent and has extreme changes in magnitude. We suggest an alternative stochastic process, called integrated fractional white noise, which retains the important local properties but avoids the undesirable oscillations in magnitude. We also show how the Hölder exponent can be estimated locally from discrete data in this model.

Tensile Failure of 55-Nitinol Wire

1975 ◽  
Vol 33 ◽  
pp. 46-47
Author(s):  
F. I. Grace
Keyword(s):  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Stoichiometric Composition ◽  
Tensile Failure ◽  
Initial State ◽  
Initial Shape ◽  
Nitinol Wire ◽  
Cscl Type ◽  
Shear Transformation

An interest in NiTi alloys with near stoichiometric composition (55 NiTi) has intensified since they were found to exhibit a unique mechanical shape memory effect at the Naval Ordnance Laboratory some twelve years ago (thus refered to as NITINOL alloys). Since then, the microstructural mechanisms associated with the shape memory effect have been investigated and several interesting engineering applications have appeared.The shape memory effect implies that the alloy deformed from an initial shape will spontaneously return to that initial state upon heating. This behavior is reported to be related to a diffusionless shear transformation which takes place between similar but slightly different CsCl type structures.

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