O'Reilly logo

Introduction to Aerospace Materials by A Mouritz

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

22

Creep of aerospace materials

22.1 Introduction

Creep is a process that involves the gradual plastic deformation of a material over time. The remarkable thing about creep is that plastic deformation occurs at stress levels below the yield strength of the material. In other words, creep causes a material to plastically deform and permanently change shape over time when subjected to an elastic load. This runs counter to the concept that plastic deformation can only occur when the applied stress exceeds the yield strength of the material.

When most engineering materials, including the metal alloys and composites used in aircraft structures, are elastically loaded then the amount of deformation that occurs does not change with time. However, ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required