229 Applicability of Inverse Analysis to Determination of Delamination Depth in Concrete by Passive Thermography

2010 ◽  
Vol 2010.85 (0) ◽  
pp. _2-29_
Author(s):  
Tzu Yang CHENG ◽  
Takahide SAKAGAMI ◽  
Daisuke SATO ◽  
Shiro KUBO
Keyword(s):  
Inverse Analysis

scholarly journals Numerical evaluation of the modulus of longitudinal elasticity in structural round timber elements of the Eucalyptus genus

2011 ◽  
Vol 31 (5) ◽  
pp. 1007-1014 ◽  
Author(s):  
André L. Christoforo ◽  
Túlio H. Panzera ◽  
Fabiano B. Batista ◽  
Paulo H. R. Borges ◽  
Francisco A. R. Lahr
Keyword(s):  
Inverse Analysis ◽  
Numerical Evaluation ◽  
Least Square Method ◽  
Least Square ◽  
Analysis Method ◽  
The Finite Element Method ◽  
Eucalyptus Citriodora ◽  
Inverse Analysis Method ◽  
Round Timber

Currently, the standards that deal with the determination of the properties of rigidity and strength for structural round timber elements do not take in consideration in their calculations and mathematical models the influence of the existing irregularities in the geometry of these elements. This study has as objective to determine the effective value of the modulus of longitudinal elasticity for structural round timber pieces of the Eucalyptus citriodora genus by a technique of optimization allied to the Inverse Analysis Method, to the Finite Element Method and the Least Square Method.

scholarly journals Rechnerische Bestimmung der lonenbeweglichkeit in Ziegelstein unter Zuhilfenahme von Ergebnissen aus nichtstationären Diffusionsversuchen / Numerical Determination of Ion Diffusivity in Bricks Based on Non-Stationary Diffusion Experiments

1999 ◽  
Vol 5 (1) ◽  
pp. 3-14
Author(s):  
H. Sadouki ◽  
A. Buchwald ◽  
F.H. Wittmann ◽  
Ch. Kaps
Keyword(s):  
Diffusion Coefficients ◽  
Inverse Analysis ◽  
Water Saturation ◽  
Optimization Technique ◽  
Ion Concentration ◽  
Ion Diffusion ◽  
Ion Migration ◽  
Numerical Studies ◽  
Stationary Diffusion

Abstract Ion concentration profiles in sandwich-brick specimens have been determined experimentally at different degrees of water saturation. Based on the experimental data, ion diffusion coefficients were determined by inverse analysis. The diffusion equation served as a basis for an optimization technique. It has been shown that the ion diffusivity in bricks decreases markedly as the moisture content decreases. The interface between two adjacent bricks slows down the ion migration at low water content in particular. It is planed to investigate the interface between mortar and bricks in further experimental and numerical studies.

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