A review of the application of acoustic emission techniques for monitoring forming and grinding processes

2005 ◽  
Vol 159 (1) ◽  
pp. 48-61 ◽  
Author(s):  
T. Jayakumar ◽  
C.K. Mukhopadhyay ◽  
S. Venugopal ◽  
S.L. Mannan ◽  
Baldev Raj
Keyword(s):  
Acoustic Emission ◽  
Grinding Processes

Dressing Monitoring by Acoustic Emission

2005 ◽  
Vol 291-292 ◽  
pp. 195-200 ◽  
Author(s):  
Berend Denkena ◽  
J. Jacobsen ◽  
Niklas Kramer
Keyword(s):  
Acoustic Emission ◽  
Basic Knowledge ◽  
Grinding Wheel ◽  
Acoustic Emission Sensor ◽  
Grinding Processes ◽  
Grinding Machines ◽  
Grinding Time ◽  
Part Production

In modern grinding processes the field of application for vitrified bonded wheels is constantly increasing. Regarding the grinding itself, the advantages of these wheels are obvious. But their ability to be dressed offers further benefits as well. Usually in-machine dressing is favorable. Nevertheless, in-machine dressing causes non-productive-times during which no part production is possible. To reduce this disadvantage, a powerful monitoring is needed in order to minimize the number of needed dressing strokes and to verify the created grinding wheel geometry. The approach applicable for industry is to use an acoustic emission sensor for monitoring, which is usually integrated in modern grinding machines to minimize the air grinding time. This article also provides basic knowledge about Acoustic Emission.

Monitoring of through-feed centreless grinding processes with acoustic emission signals

Measurement ◽  
2016 ◽  
Vol 94 ◽  
pp. 71-79 ◽  
Author(s):  
Everaldo Araújo Dias ◽  
Flávio Bonato Pereira ◽  
Sergio Luiz Moni Ribeiro Filho ◽  
Lincoln Cardoso Brandão
Keyword(s):  
Acoustic Emission ◽  
Grinding Processes

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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