Fast and Slow Dynamics in Damaged Materials: Correlation to Acoustic Emission

2008 ◽  
Vol 123 (5) ◽  
pp. 3398-3398
Author(s):  
Mourad Bentahar ◽  
Anne Marec ◽  
Rachid El Guerjouma ◽  
Jean‐Hugh Thomas
Keyword(s):  
Acoustic Emission ◽  
Slow Dynamics ◽  
Damaged Materials

Experimental Investigations on Non-Linear Slow Dynamics of Damaged Materials: Correlation with Acoustic Emission

2008 ◽  
Author(s):  
M. Bentahar ◽  
A. Marec ◽  
R. El Guerjouma ◽  
J.-H. Thomas ◽  
V. Tournat ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Experimental Investigations ◽  
Slow Dynamics ◽  
Non Linear ◽  
Damaged Materials

Acoustic emission to probe slow dynamics in complex materials

2017 ◽  
Vol 141 (5) ◽  
pp. 3904-3905 ◽  
Author(s):  
Mourad Bentahar ◽  
Xiaoyang Yue ◽  
Charfeddine Mechri ◽  
Silvio Montresor
Keyword(s):  
Acoustic Emission ◽  
Complex Materials ◽  
Slow Dynamics

Propagation of acoustic emission signals in metallic fuselage structure

2001 ◽  
Vol 148 (4) ◽  
pp. 169-177 ◽  
Author(s):  
R.P. Dalton ◽  
P. Cawley ◽  
M.J. Lowe
Keyword(s):  
Acoustic Emission

Comparison of random field strengths in (1-x)SrTiO3-xBiFeO3 and (1-x)SrTiO3-xBaTiO3 relaxor ferroelectrics by means of acoustic emission

2020 ◽  
Vol 92 (2) ◽  
pp. 20401
Author(s):  
Evgeniy Dul'kin ◽  
Michael Roth
Keyword(s):  
Acoustic Emission ◽  
Random Field ◽  
Electric Fields ◽  
Bias Field ◽  
Relaxor Ferroelectrics ◽  
External Bias ◽  
Field Strengths

In relaxor (1-x)SrTiO3-xBiFeO3 ferroelectrics ceramics (x = 0.2, 0.3 and 0.4) both intermediate temperatures and Burns temperatures were successfully detected and their behavior were investigated in dependence on an external bias field using an acoustic emission. All these temperatures exhibit a non-trivial behavior, i.e. attain the minima at some threshold fields as a bias field enhances. It is established that the threshold fields decrease as x increases in (1-x)SrTiO3-xBiFeO3, as it previously observed in (1-x)SrTiO3-xBaTiO3 (E. Dul'kin, J. Zhai, M. Roth, Phys. Status Solidi B 252, 2079 (2015)). Based on the data of the threshold fields the mechanisms of arising of random electric fields are discussed and their strengths are compared in both these relaxor ferroelectrics.

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