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Introduction to Aerospace Materials by A Mouritz

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23

Nondestructive inspection and structural health monitoring of aerospace materials

23.1 Introduction

The high quality of materials used in aircraft structural components is essential for reliability and safety. Structural materials must be free from defects that would reduce the structural properties, failure strength and design life. However, despite careful control of the operations used in processing of aerospace materials, it is difficult to ensure that every structure is completely free from defects. For example, brittle intermetallic inclusions and gas holes form in the casting of metal components and voids and dry spots occur in the manufacture of fibre–polymer composite structures. Damage also occurs during in-service operation of ...

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