Nondestructive Evaluation of Structural Ceramics

WILLIAM A. ELLINGSON and CHRIS DEEMER

Energy Technology Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439

13.1 Introduction

13.2 Brief Historical Perspective

13.3 Characteristics of Interest to Monolithic Ceramics

13.3.1 Green-State Information

13.3.1.1 Powders

13.3.1.2 Injection-Molding/Slip Casting

13.3.1.3 Porosity

13.3.2 Internal Defects

13.3.3 Surface-Breaking Cracks and Machining Damage

13.3.3.1 Surface-Breaking Cracks

13.3.3.2 Damage from Machining

13.3.4 Creep

13.3.4.1 Elastic Optical Scattering

13.3.4.2 Ultrasonics

13.3.5 Accumulated Damage

13.3.6 Bioceramics

13.4 Characteristics of Interest to Composite Ceramics

13.4.1 In-process Information

13.4.1.1 Thermal Imaging

13.4.1.2 Air-Coupled Ultrasonics

13.4.1.3 Impact Acoustic Resonance

13.4.2 Delamination Detection

13.4.2.1 Polymer Impregnation Process, SiC/SiC

13.4.2.2 Sol-gel Oxide/Oxide

13.4.2.3 Melt-Infiltrated SiC/SiC with Environmental Barrier Coating

13.4.2.4 Delam Detection by Volumetric X-ray Tomographic Imaging

13.4.3 Porosity Detection

13.4.4 Impact Damage Detection

13.4.5 Through-Thickness Crack Detection

Handbook of Advanced Materials Edited by James K. Wessel ISBN 0-471-45475-3 Copyright © 2004 John Wiley & Sons, Inc.

13.4.6 Resonant Frequency and Damping

13.4.7 Remaining Useful Life References

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