scholarly journals Contribution to the diagnostics of rock bolts using elastic wave propagation

2013 ◽  
Vol 12 (1) ◽  
pp. 227-234
Author(s):  
Magdalena Rucka
Keyword(s):  
Composite Material ◽  
Wave Propagation ◽  
Elastic Modulus ◽  
Elastic Wave ◽  
Numerical Simulations ◽  
Elastic Wave Propagation ◽  
Laser Vibrometer ◽  
Rock Bolts ◽  
Ultrasonic Diagnostics ◽  
Experimental Analyses

This paper presents the numerical and experimental analyses of elastic wave propagation in a steel rod embedded in a composite material. The experiment involved the phenomenon of wave propagation generated by a piezoactuator and non-contact measurements by means of a laser vibrometer. In numerical simulations, the effect of values of elastic modulus of the material on characteristics of waves propagating in a steel rod was analysed. Conducted research presents the first stage of work focused on ultrasonic diagnostics of rock bolts.

scholarly journals On the Young's Modulus Measurements of Ceramic and Carbon Fibres using Elastic Wave Propagation Techniques. Comparison against Quasi-Static Tensile Tests

2004 ◽  
Vol 13 (2) ◽  
pp. 096369350401300
Author(s):  
V. Kostopoulos ◽  
T. H. Loutas ◽  
G. Sotiriadis
Keyword(s):  
Wave Propagation ◽  
Elastic Modulus ◽  
Elastic Wave ◽  
Young’S Modulus ◽  
Tensile Tests ◽  
Elastic Wave Propagation ◽  
Conventional Approach ◽  
Different Types ◽  
Static Tensile ◽  
Non Destructive

The Young's modulus determination of different types of ceramic fibres using both conventional quasi-static tensile tests and non-destructive elastic wave propagation techniques is the scope of the present work. A sufficient number of tensile tests were conducted on a number of different types of fibres such as carbon, Al2O3 and SiC fibre bundles and the elastic modulus was obtained. In parallel a method to determine the elastic modulus via a non-destructive approach was of primary concern due to the uncertainties of the conventional approach. To this direction the acousto-ultrasonics method proved quite capable to provide time-of-flight measurements in a rather simple experimental setup. The results seem remarkably close to the manufacturer's data and verify the method's applicability. Both techniques are analytically described with the emphasis lying on the non-destructive one. Deviations obtained from the conventional approach are thoroughly discussed and the advantages of the non-destructive technique are highlighted.

scholarly journals Active tuning of elastic wave propagation in a piezoelectric metamaterial beam

AIP Advances ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 065009
Author(s):  
Xi-Ning Zhao ◽  
Xiao-Dong Yang ◽  
Wei Zhang ◽  
Huayan Pu
Keyword(s):  
Wave Propagation ◽  
Elastic Wave ◽  
Elastic Wave Propagation

Elastic wave propagation in hierarchical lattices with convex and concave hexagons stacked vertexes

2019 ◽  
Vol 146 (3) ◽  
pp. 1519-1527 ◽  
Author(s):  
ZhiWei Zhu ◽  
ZiChen Deng ◽  
ShuZhan Tong ◽  
BenJie Ding ◽  
JianKe Du
Keyword(s):  
Wave Propagation ◽  
Elastic Wave ◽  
Elastic Wave Propagation ◽  
Hierarchical Lattices
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