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

(University of Colorado, Boulder, CO), (University of Manitoba, Winnipeg, Canada)
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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.

Arvustused

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

Preface xi
Introduction
Historical Background
1(7)
Scope of the Book
8(3)
Fundamentals of Elastic Waves in Anisotropic Media
Waves in Homogeneous Elastic Media: Formulation of Field Equations
11(9)
Plane Waves in a Homogeneous Anisotropic Medium
20(13)
Numerical Results and Discussion
33(4)
Periodic Layered Media
Introduction
37(1)
Description of the Problem
38(13)
Numerical Results
51(5)
Remarks
56(8)
Guided Waves in Fiber-Reinforced Composite Plates
Introduction
64(1)
Governing Equations
64(12)
Numerical Results
76(9)
Application to Materials Characterization
85(3)
Thin Layers
88(10)
Guided Waves in Plates with Thin Coating and Interface Layers
98(16)
Transient Response due to a Concentrated Source of Excitation
114(28)
Laminated Plate with Interface Layers
142(4)
Remarks
146(1)
Laser-Generated Thermoelastic Waves
147(10)
Results for Thermoelastic Dispersion and Laser-Generated Waves
157(8)
Wave Propagation in Composite Cylinders
Introduction
165(1)
Governing Equations
166(2)
Analytical Solution for Transversely Isotropic Composite Cylinder
168(6)
Stiffness Method I
174(5)
Stiffness Method II
179(2)
Numerical Results---Circular Cylinder
181(5)
Guided Waves in a Cylinder of Arbitrary Cross Section
186(9)
Numerical Results---Cylinder with Rectangular and Trapezoidal Cross Sections
195(10)
Harmonic Response of a Composite Circular Cylinder due to a Point Force
205(8)
Forced Motion of Finite-Width Plate
213(10)
Scattering of Guided Waves in Plates and Cylinders
Introduction
223(1)
Scattering in a Plate
224(33)
Scattering in a Pipe
257(26)
Appendix A: Computer Programs
A.1 Programs
283(3)
A.2 Executing Programs
286(3)
References 289(24)
Index 313
University of Colorado, Boulder, CO University of Manitoba, Winnipeg, Canada