TY - CHAP
T1 - Nonlinear acoustic and ultrasound methods for assessing and monitoring civil infrastructures
AU - Meo, M.
PY - 2014/4/1
Y1 - 2014/4/1
N2 - This chapter presents an overview of nonlinear acoustic and ultrasound methods and their application to civil structures. The major nonlinear ultrasonic methods are thoroughly reviewed and the underlying physics and laboratory studies are reported. In particular, phenomena such as higher harmonic generation, subharmonic generation, nonlinear resonance, and mixed frequency response are discussed and the basic physical mechanism of each phenomenon is introduced with applications for evaluation of damage in civil structures. Research results to date show higher sensitivity of these techniques than the conventional linear ultrasonic methods in detecting microdamage in commonly used material for civil structures, such as concrete and mortar. Finally, current and future challenges are discussed for the successful future implementations of these methods in a maintenance programme.
AB - This chapter presents an overview of nonlinear acoustic and ultrasound methods and their application to civil structures. The major nonlinear ultrasonic methods are thoroughly reviewed and the underlying physics and laboratory studies are reported. In particular, phenomena such as higher harmonic generation, subharmonic generation, nonlinear resonance, and mixed frequency response are discussed and the basic physical mechanism of each phenomenon is introduced with applications for evaluation of damage in civil structures. Research results to date show higher sensitivity of these techniques than the conventional linear ultrasonic methods in detecting microdamage in commonly used material for civil structures, such as concrete and mortar. Finally, current and future challenges are discussed for the successful future implementations of these methods in a maintenance programme.
UR - http://www.scopus.com/inward/record.url?scp=84902635609&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1533/9780857099136.179
U2 - 10.1533/9780857099136.179
DO - 10.1533/9780857099136.179
M3 - Chapter or section
AN - SCOPUS:84902635609
SN - 9780857094322
VL - 1
T3 - Woodhead Publishing Series in Electronic and Optical Materials
SP - 179
EP - 200
BT - Sensor Technologies for Civil Infrastructures
A2 - Wang, M. L.
A2 - Lynch, J. P.
A2 - Sohn, H.
PB - Woodhead Publishing Ltd.
CY - Cambridge, U. K.
ER -