Nonlinear Ultrasonic and Vibro-Acoustical Techniques for Nondestructive Evaluation

This multi-contributed volume provides a practical, applications-focused introduction to nonlinear acoustical techniques for nondestructive evaluation. Compared to linear techniques, nonlinear acoustical/ultrasonic techniques are much more sensitive to micro-cracks and other types of small distributed damages. Most materials and structures exhibit nonlinear behavior due to the formation of dislocation and micro-cracks from fatigue or other types of repetitive loadings well before detectable macro-cracks are formed. Nondestructive evaluation (NDE) tools that have been developed based on nonlinear acoustical techniques are capable of providing early warnings about the possibility of structural failure before detectable macro-cracks are formed. This book presents the full range of nonlinear acoustical techniques used today for NDE. The expert chapters cover both theoretical and experimental aspects, but always with an eye towards applications. Unlike other titles currently available, which treat nonlinearity as a physics problem and focus on different analytical derivations, the present volume emphasizes NDE applications over detailed analytical derivations. The introductory chapter presents the fundamentals in a manner accessible to anyone with an undergraduate degree in Engineering or Physics and equips the reader with all of the necessary background to understand the remaining chapters. This self-contained volume will be a valuable reference to graduate students through practising researchers in Engineering, Materials Science, and Physics.

• Represents the first book on nonlinear acoustical techniques for NDE applications
• Emphasizes applications of nonlinear acoustical techniques
• Presents the fundamental physics and mathematics behind nonlinear acoustical phenomenon in a simple, easily understood manner

• Covers a variety of popular NDE techniques based on nonlinear acoustics in a single volume

Autorentext
Tribikram Kundu is a Professor in the Department of Civil Engineering and Engineering Mechanics at the University of Arizona. Dr. Kundu has made significant and original contributions in both basic and applied research in nondestructive testing (NDT) and structural health monitoring (SHM) by ultrasonic and electromagnetic techniques. His fundamental research interests are monitoring the health of existing and new structures by ultrasonic and other NDT techniques. His research requires knowledge of elastic wave propogation in multi-layered solids, fracture mechanics, computational mechanic, geo- and biomechanics. He has collaborated extensively with international and U.S. scientists. He has spent 28 months in the Department of Biology, J.W. Goethe University, Frankfurt, Germany, first as an Alexander von Humboldt Fellow and then as a Humboldt Research Prize winner. He is a Fellow of the Acoustical Society of America.

Inhalt

List of Contributors.- 1 Fundamentals of Nonlinear Acoustical Techniques and Sideband Peak Count.- 2 Nonlinear Resonant Ultrasound Spectroscopy: Assessing Global Damage.- 3 Modelling and Numerical Simulations in Nonlinear Acoustics Used for Damage Detection.- 4 Structural Damage Detection Based on Nonlinear Acoustics - Application Examples.- 5 Nonlinear and Hysteretic Constitutive Models for Wave Propagation in Solid Media With Cracks and Contacts.- 6 Nonlinear Ultrasonic Techniques for Material Characterization.- 7 Nonlinear Ultrasonic Responses of Contacting Interfaces.- 8 Nonlinear Acoustic Response of Damage Applied for Diagnostic Imaging.- 9 Nonlinear Guided Waves and Thermal Stresses.- 10 Subharmonic Phased Array for Crack Evaluation (SPACE).- 11 A Unified Treatment of Nonlinear Viscoelasticity and Non-Equilibrium Dynamics.- 12 Cement-Based Material Characterization Using Nonlinear Single Impact Resonant Acoustic Spectroscopy.- 13 Dynamic Acousto-Elastic Testing.- 14 Time Reversal Acoustics.- 15 Multiscale Quantification of Damage Precursor in Composites.- 16 Anharmonic Interactions of Probing Ultrasonic Waves with the Applied Loads Including Applications Suitable for Structural Health Monitoring.- 17 Noncontact Nonlinear Ultrasonic Wave Modulation for Fatigue Crack and Delamination Detection.- 18 Characterizing Fatigue Cracks Using Active Sensor Networks.- Index.