Elastic Waves in Composite Media and Structures: With Applications to Ultrasonic Nondestructive Evaluation

ISBN-13: 9781420053388 / Angielski / Twarda / 2008 / 336 str.

Subhendu K. Datta; Arvind H. Shah

Opis

New applications for composite materials are being developed at a rapid pace. However, their complex microstructures present considerable challenges for nondestructive testing and characterization. Ultrasonic waves provide quantitative means of nondestructive evaluation of these materials and structures. For this purpose, it is necessary to obtain a clear understanding of the characteristic features of guided elastic wave propagation in such materials and structures and their dynamic response.. Elastic Waves in Composite Media and Structures presents effective analytical and numerical techniques to study the characteristic features of elastic guided waves in fiber reinforced laminated media. The book closely examines the salient features of dispersive guided modes and how they are modified by defects, inhomogeneities, and boundaries. An accompanying CD-ROM contains executable computer programs, which can be used to simulate different scenarios for designing and interpreting ultrasonic experiments. Using the extensive numerical results provided by this cutting-edge resource, researchers and practitioners will gain valuable insight into how to develop effective methods for nondestructive testing of composite materials.

Recenzje

The authors present fundamental equations and their solutions for plane wave propagation in an infinite homogeneous anisotropic elastic material. … A systematic investigation of the effect of different fiber layups and increasing number of laminae on the dispersion characteristics reveals features that are useful for experimental determination of lamina properties. … Comparison with some available experimental results shows good agreement between the model results and observations.
—Zentralblatt MATH 1169

Spis treści

Introduction
Historical Background
Scope of the Book

Fundamentals of Elastic Waves in Anisotropic Media
Waves in Homogeneous Elastic Media: Formulation of Field Equations
Plane Waves in a Homogeneous Anisotropic Medium
Numerical Results and Discussion

Periodic Layered Media
Introduction
Description of the Problem
Numerical Results
Remarks

Guided Waves in Fiber-Reinforced Composite Plates
Introduction
Governing Equations
Numerical Results
Application to Materials Characterization
Thin Layers
Guided Waves in Plates with Thin Coating and Interface Layers
Transient Response due to a Concentrated Source of Excitation
Laminated Plate with Interface Layers
Remarks
Laser-Generated Thermoelastic Waves
Results for Thermoelastic Dispersion and Laser-Generated Waves

Wave Propagation in Composite Cylinders
Introduction
Governing Equations
Analytical Solution for Transversely Isotropic Composite Cylinder
Stiffness Method I
Stiffness Method II
Numerical Results—Circular CylinderGuided Waves in a Cylinder of Arbitrary Cross Section
Numerical Results—Cylinder with Rectangular and Trapezoidal Cross Sections
Harmonic Response of a Composite Circular Cylinder due to a Point Force
Forced Motion of Finite-Width Plate

Scattering of Guided Waves in Plates and Cylinders
Introduction
Scattering in a Plate
Scattering in a Pipe

Appendix A: Computer Programs
Programs
Executing Programs

References

O autorze

Subhendu K. Datta