Nonlinear acoustic/ultrasound methods for civil applications

Michele Meo

Research output: Chapter or section in a book/report/conference proceedingChapter or section


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, or mixed frequency response were discussed, and the basic physical mechanism of each phenomenon is introduced with applications for evaluation of damage in civil structures. Research results to date showed higher sensitivity of these techniques than the conventional linear ultrasonic methods in detecting microdamage in commonly used materials 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 program.

Original languageEnglish
Title of host publicationSensor Technologies for Civil Infrastructures
Subtitle of host publicationVolume 2: Applications in Structural Health Monitoring
Place of PublicationFrance
PublisherElsevier Masson
Number of pages32
ISBN (Electronic)9780081027066
ISBN (Print)9780081027073
Publication statusPublished - 29 Jul 2022
Externally publishedYes


  • Acoustic nonlinearity
  • Harmonics
  • Nonlinear acoustic
  • Nonlinear resonance ultrasound spectroscopy
  • Nonlinear wave modulation

ASJC Scopus subject areas

  • General Engineering


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