Vibrating wire scanner to profile micron-sized beams

Scilight ◽  
2021 ◽  
Vol 2021 (10) ◽  
pp. 101107
Author(s):  
Meeri Kim
Keyword(s):  
Vibrating Wire

Field Monitoring of Surrounding Rock Stress in Tunnel Construction

2012 ◽  
Vol 170-173 ◽  
pp. 1735-1739
Author(s):  
Ying Na Dong ◽  
Qiang Huang
Keyword(s):  
Spatial Effect ◽  
Field Monitoring ◽  
Surrounding Rock ◽  
Tunnel Construction ◽  
Rock Stress ◽  
Vibrating Wire ◽  
Stress Variation ◽  
Stress Changes ◽  
Tunnel Diameter ◽  
Surrounding Rock Stress

The surrounding rock stress field monitor has been done in excavation by vibrating wire transducer. The field monitoring data are compared with numerical simulation results. The result shows: Vibrating wire transducer can record the stress variation of surrounding rock and support. Surrounding rock stress changes violently at every excavation step, such as lower bench excavation, the stress variation is mainly controlled by the spatial effect. When the distance from excavation face to the monitoring section is more than a tunnel diameter, the rock stress variation is mainly affected by time and it is relatively smooth and continuous.

Note on Mr Joseph O. Thompson's Results regarding Vibrating Wires

1899 ◽  
Vol 22 ◽  
pp. 598-600
Author(s):  
Dr W. Peddie
Keyword(s):  
Constant Temperature ◽  
Breaking Strength ◽  
Copper Wire ◽  
Physical Review ◽  
Logarithmic Decrement ◽  
Constant Amplitude ◽  
Vibrating Wire ◽  
Constant Quantity ◽  
The Wire ◽  
Lord Kelvin

In 1865 Lord Kelvin published the results of experiments which first made evident “a very remarkable fatigue of elasticity, according to which a wire which has been kept vibrating for several hours or days through a certain range came to rest much quicker when left to itself than when set in vibration after it has been at rest for several days and then immediately left to itself.” On the strength of Lord Kelvin's statement this elastic fatigue of metals has been regarded as a definitely ascertained fact. But, quite recently (Physical Review, March 1899), Mr Joseph O. Thompson has published a paper “On the period and logarithmic decrement of a continuously vibrating wire,” in which he states that it seems probable that “for constant temperature and constant amplitude the logarithmic decrement is constant.” This conclusion is based upon his observation that the logarithmic decrement, in the case of a copper wire, when the amplitude of vibration varied from about 185° to 175°, had the same value after it had been continuously vibrated through the average arc of 180° for fifty consecutive hours as it had at the commencement of that period. Observations upon other metals seemed to support the conclusion.Lord Kelvin also stated that fatigue caused an increase of the period of vibration. Mr Thompson finds that “no matter what metal was used, no matter whether the arc of vibration was as small as 20° or as high as 200°, no matter whether the wire was long or short, thick or thin (provided of course the breaking strength of the wire was at least twice the weight of the disc), the result was uniformly the same, namely, that when temperature and amplitude of vibration remained constant, the period of vibration was a constant quantity.”

scholarly journals Origin of frequency difference between damped and sustained modes in vibrating wire sensors

2016 ◽  
Vol 241 ◽  
pp. 66-73 ◽  
Author(s):  
Bingqing Mei ◽  
Jérôme Lucas ◽  
Stéphane Holé ◽  
Isabelle Lamarque ◽  
Norbert Cheron
Keyword(s):  
Frequency Difference ◽  
Vibrating Wire

scholarly journals Development of Gas Viscosity Measurement System with Vibrating Wire Method

Netsu Bussei ◽  
2015 ◽  
Vol 28 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Kosuke Yoshimura ◽  
Temujin Uehara ◽  
Kan'ei Shinzato ◽  
Tatsuya Hisatsugu ◽  
Naoya Sakoda ◽  
...  
Keyword(s):  
Measurement System ◽  
Viscosity Measurement ◽  
Vibrating Wire ◽  
Gas Viscosity ◽  
Wire Method

scholarly journals Large aperture vibrating wire monitor with two mechanically coupled wires for beam halo measurements

2014 ◽  
Vol 17 (3) ◽  
Author(s):  
S. G. Arutunian ◽  
A. E. Avetisyan ◽  
M. M. Davtyan ◽  
G. S. Harutyunyan ◽  
I. E. Vasiniuk ◽  
...  
Keyword(s):  
Vibrating Wire ◽  
Large Aperture ◽  
Beam Halo

Structural monitoring with a dynamic vibrating wire analyzer

2014 ◽  
pp. 2413-2420
Author(s):  
Steven Petroff ◽  
Marvin Halling ◽  
Paul Barr ◽  
Scott Cornelsen ◽  
David Madsen
Keyword(s):  
Structural Monitoring ◽  
Vibrating Wire
Sign in / Sign up

Export Citation Format

Share Document