Failure Modes of Aerospace Materials
Physical Monitoring Principles
Modeling of Load and Damage Mechanisms in SHM
Published Online: 15 SEP 2009
Copyright © 2009 John Wiley & Sons, Ltd. All rights reserved.
Encyclopedia of Structural Health Monitoring
How to Cite
Jata, K. V., Roy, A. and Parthasarathy, T. A. 2009. Failure Modes of Aerospace Materials. Encyclopedia of Structural Health Monitoring. .
- Published Online: 15 SEP 2009
Understanding and interpreting aircraft structural and engine failure modes at a material level is important from the standpoint of employing superior fracture-resistant materials and predicting remaining useful life based on the micromechanics of materials. Failure modes can be understood by observing the fracture surface of a component from a low magnification to several orders of magnitude of magnification. It is also important to know the chemical composition of the material, primary, and secondary processing methods used to fabricate the product form. To predict the fracture modes, knowledge of operational environment and loads is required. Recently, there has been an increasing interest and need to design structural health monitoring systems to maintain systems based on the system condition. Instead of time-based maintenance, the new paradigm is to perform condition-based maintenance. Therefore, knowledge of material and structural failure modes is essential to incorporate this new approach. To perform the system health diagnosis, collaborative work between nondestructive evaluation (NDE) and structural health monitoring researchers is critical to build new health monitoring systems in the future. This article broadly discusses and summarizes failure modes of a few structural metallic alloys and polymer-based composites used in aerospace structures.