Determination of the torsional stiffness of an azimuth tube with a stiffened opening by holographic interferometry

1980 ◽  
Vol 1 (2) ◽  
pp. 147-159 ◽  
Author(s):  
A.G. Khadakkar ◽  
Nagesh R. Iyer ◽  
T.V.S.R. Appa Rao
Keyword(s):  
Holographic Interferometry ◽  
Torsional Stiffness

Sensitivity and optimization in the determination of deformations by holographic interferometry

1988 ◽  
Vol 20 (5) ◽  
pp. 269-273 ◽  
Author(s):  
F. Dalmases ◽  
R. Salvador ◽  
M. Buendía ◽  
C. Romero ◽  
R. Cibrían ◽  
...  
Keyword(s):  
Holographic Interferometry

Determination of Deformation Fields of Diffuse Objects by Phase-Shifting Digital Holographic Interferometry

2020 ◽  
Vol 56 (6) ◽  
pp. 608-613
Author(s):  
V. I. Guzhov ◽  
E. N. Denezhkin ◽  
S. P. Il’inykh ◽  
G. A. Pozdnyakov ◽  
D. S. Khaidukov
Keyword(s):  
Holographic Interferometry ◽  
Phase Shifting

Determination of displacement derivative in digital holographic interferometry

2009 ◽  
Vol 282 (5) ◽  
pp. 809-815 ◽  
Author(s):  
C. Quan ◽  
C.J. Tay ◽  
W. Chen
Keyword(s):  
Holographic Interferometry

Consideration of the Torsional Stiffness in Hollow-Core Slabs’ Design

2019 ◽  
Vol 968 ◽  
pp. 330-341
Author(s):  
Talyat Azizov ◽  
Wit Derkowski ◽  
Nadzieja Jurkowska
Keyword(s):  
Finite Elements ◽  
Precast Concrete ◽  
Numerical Data ◽  
Torsional Stiffness ◽  
System Of Equations ◽  
Hollow Core ◽  
Floor Slabs ◽  
Formation Of Cracks ◽  
Resolving System

The paper discusses the principles of precast concrete hollow-core slabs taking into account their spatial work. It is shown that consideration of spatial work makes it possible to determine the forces in individual floor slabs significantly more precise. The fact that strain redistribution between precast floor slabs depends on slabs’ bending and torsional stiffness is shown. The research has been mostly devoted to determination of the bending stiffness with regard to formation of cracks and the change in torsional stiffness, especially considering the presence of normal cracks, which is still unstudied. This paper presents the technique for determining the torsional stiffness of hollow-core slabs with normal cracks. In order to determine the components included in the resolving system of equations, it is proposed to use an approximation method based on the processing of numerical data using spatial finite elements.

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