scholarly journals NDT of Mechanical Damaged Concrete Specimens by Nonlinear Acoustic Spectroscopy Method

2009 ◽  
Vol 2 (4) ◽  
pp. 166-171 ◽  
Author(s):  
M. Matysik ◽  
I. Plskova ◽  
M. Korenska ◽  
B. Kucharczykova
Keyword(s):  
Spectroscopy Method ◽  
Acoustic Spectroscopy ◽  
Nonlinear Acoustic

Diagnostics of Advanced Power Intensive Power Sources Based on the Acoustic Spectroscopy Method

2021 ◽  
pp. 121-127
Author(s):  
E.M. Petrenko ◽  
V.A. Semenova
Keyword(s):  
High Reliability ◽  
Methodological Approach ◽  
Spectral Characteristics ◽  
Experimental Studies ◽  
Mechanical Action ◽  
Mean Value ◽  
Spectroscopy Method ◽  
Power Sources ◽  
Acoustic Spectroscopy ◽  
Noise Diagnostics

Objective of this article is to develop a method for lithium chemical current sources diagnostics, which would ensure high reliability in assessing their technical state (primarily, the discharge degree) close to potentially achievable introduction of the acoustic spectroscopy method. Today, microcalorimetric studies and methods of impedance and noise spectroscopy make it possible to predict the lithium chemical current sources service life. However, implementation of the microcalorimetric studies result requires a lot of time accompanied by using stationary and large-size equipment, which is practically impossible in the autonomous conditions. Application of the impedance spectroscopy method provides satisfactory results only with high degrees of discharge. In the range of 0--30 %, it is very difficult to determine the discharge degree, since noticeable alteration in the correlate within its deviation from the mean value is missing. In this regard, it is proposed in order to provide diagnostics of the lithium chemical current sources in the region of initial degrees of discharge to introduce the noise diagnostics method. In order to increase reliability of the diagnostic estimates, it is advisable to use acoustic spectroscopy as a physically independent method in diagnosing the state of lithium chemical current sources. Results of the preliminary measurements analysis confirm the prospects of using the acoustic spectroscopy method in assessing the current state of primary lithium chemical current sources. Experimental studies of the lithium chemical current sources response to acoustic (mechanical) action made it possible to determine a set of parameters characterizing the proposed methodological approach. This provided a possibility to search for correlation dependences of the lithium chemical current sources spectral characteristics on the degree of their discharge. This makes it possible to use the method of acoustic spectroscopy in prompt and reliable diagnostics of the primary current sources in the region of low discharge degrees

Application of three-dimensional resonant acoustic spectroscopy method to rock and building materials

2001 ◽  
Vol 110 (4) ◽  
pp. 1770-1777 ◽  
Author(s):  
Lev Ostrovsky ◽  
Andrey Lebedev ◽  
Alexander Matveyev ◽  
Andrey Potapov ◽  
Alexander Sutin ◽  
...  
Keyword(s):  
Building Materials ◽  
Three Dimensional ◽  
Spectroscopy Method ◽  
Acoustic Spectroscopy

The Possibility of Using Nonlinear Acoustic Spectroscopy with a Single Excitation Signal for Testing of Concrete Elements Damaged by High Temperature

2019 ◽  
Vol 808 ◽  
pp. 66-71
Author(s):  
Michal Matysík ◽  
Iveta Plšková ◽  
Zdeněk Chobola
Keyword(s):  
High Temperature ◽  
Elevated Temperature ◽  
Temperature Rise ◽  
Heat Load ◽  
Excitation Signal ◽  
Acoustic Spectroscopy ◽  
Before And After ◽  
Nonlinear Acoustic ◽  
Concrete Elements ◽  
Temperature Time

This paper focuses on the use of nonlinear acoustic spectroscopy with one excitation signal for NDT of concrete parts exposed to high temperature. The rate of the temperature rise, the highest achieved temperature, time of exposure to elevated temperature and the cooling rate has an influence on the overall damage of concrete structures affected by fire. The test specimens described in this paper have been heated for various periods of time and at a different temperature. Nonlinear acoustic spectroscopy method was performed before and after heat load.

scholarly journals Investigation of Damage in Composites Using Nondestructive Nonlinear Acoustic Spectroscopy

2016 ◽  
Vol 57 (2) ◽  
pp. 207-217 ◽  
Author(s):  
S. Eckel ◽  
F. Meraghni ◽  
P. Pomarède ◽  
N. F. Declercq
Keyword(s):  
Acoustic Spectroscopy ◽  
Nonlinear Acoustic

Nonlinear Acoustic Spectroscopy and Frequency Sweep Ultrasonics: Case on Thermal Damage Assessment in Mortar

2019 ◽  
Vol 38 (3) ◽  
Author(s):  
Vicente Genovés ◽  
Alicia Carrión ◽  
Daniel Escobar ◽  
Jorge Gosálbez ◽  
Jose Monzó ◽  
...  
Keyword(s):  
Damage Assessment ◽  
Thermal Damage ◽  
Frequency Sweep ◽  
Acoustic Spectroscopy ◽  
Nonlinear Acoustic

Nonlinear acoustic spectroscopy of carbonate rocks

2017 ◽  
Vol 63 (3) ◽  
pp. 346-358
Author(s):  
V. S. Averbakh ◽  
V. V. Bredikhin ◽  
A. V. Lebedev ◽  
S. A. Manakov
Keyword(s):  
Carbonate Rocks ◽  
Acoustic Spectroscopy ◽  
Nonlinear Acoustic

scholarly journals Cavity-enhanced cantilever-enhanced photo-acoustic spectroscopy

The Analyst ◽  
2019 ◽  
Vol 144 (7) ◽  
pp. 2291-2296 ◽  
Author(s):  
Teemu Tomberg ◽  
Tuomas Hieta ◽  
Markku Vainio ◽  
Lauri Halonen
Keyword(s):  
Laser Spectroscopy ◽  
Spectroscopy Method ◽  
Gas Detection ◽  
Trace Gas ◽  
Trace Gas Detection ◽  
Acoustic Spectroscopy ◽  
Highly Sensitive ◽  
Photo Acoustic Spectroscopy

Highly sensitive and selective trace gas detection based on a novel photo-acoustic laser spectroscopy method.

Nonlinear acoustic spectroscopy of local defects in geomaterials

2005 ◽  
Vol 51 (S1) ◽  
pp. S88-S101 ◽  
Author(s):  
A. V. Lebedev ◽  
L. A. Ostrovskii ◽  
A. M. Sutin
Keyword(s):  
Acoustic Spectroscopy ◽  
Nonlinear Acoustic ◽  
Local Defects
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