Laser ultrasonics in a multilayer structure: Semi-analytic model and simulated examples

2021 ◽  
Vol 150 (3) ◽  
pp. 2065-2075
Author(s):  
R. Hodé ◽  
M. Ducousso ◽  
N. Cuvillier ◽  
V. Gusev ◽  
V. Tournat ◽  
...  
Keyword(s):  
Multilayer Structure ◽  
Laser Ultrasonics ◽  
Analytic Model

Application of all-optical laser ultrasonics for characterization of sub-mm layers in multilayer structure

2021 ◽  
Vol 182 ◽  
pp. 108284
Author(s):  
Xiaoyu Yang ◽  
Chengcheng Zhang ◽  
Cheng Chen ◽  
Anyu Sun ◽  
Bing-feng Ju ◽  
...  
Keyword(s):  
Multilayer Structure ◽  
Laser Ultrasonics ◽  
All Optical ◽  
Optical Laser

Determining elastic properties of sedimentary strata in terms of limestone samples by laser ultrasonics

2020 ◽  
pp. 125-134
Author(s):  
I. A. Shibaev ◽  
V. A. Vinnikov ◽  
G. D. Stepanov
Keyword(s):  
Physical And Mechanical Properties ◽  
Laser Ultrasonics ◽  
Compression Tests ◽  
S Waves ◽  
Static Modulus ◽  
Enhance Efficiency ◽  
Static Modulus Of Elasticity ◽  
Static Elastic Moduli ◽  
Non Destructive ◽  
Moduli Of Elasticity

Geological engineering often uses geomechanical modeling aimed to enhance efficiency of mining or performance of structures. One of the input parameters for such models are the static elastic moduli of rocks. This article presents the studies into the physical and mechanical properties of rocks-limestone of non-metamorphic diagenesis. The precision measurements of Pand S-waves are carried out to an accuracy of 0.2% by laser ultrasonics. The static moduli of elasticity and the deformation characteristics of rocks are determined in the uniaxial compression tests by the standards of GOST 21153.2-84 and GOST 28985-91, respectively. The correlation dependence is found between the static and dynamic elasticity moduli in limestone samples. The found correlation allows drawing the conclusion that the static modulus of elasticity can be estimated in non-destructive tests, which largely simplifies preliminary diagnostics of samples in case of limited number of test core.

In Situ Assembly of LDPE/PA6 Multilayer Structure by Stirring

2020 ◽  
Vol 35 (1) ◽  
pp. 58-69
Author(s):  
P. Pongmuksuwan ◽  
W. Harnnarongchai
Keyword(s):  
Multilayer Structure
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