3 stages of creep failure - Industrial Physics 3 stages of creep failure - Industrial Physics

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3 stages of creep failure

The 3 Stages of Creep Failure

Creep failure is the slow buckling and deformation of a material under constant load.

Creep is a time-dependent deformation and one that can be hard to spot in the early stages. The best way to protect against creep failure is to know the key stages and implement the correct testing processes to identify each one in every new material application.

How does creep failure occur?

Creep failure results in the permanent deformation of the material and runs the risk of compromising the integrity of the product. It affects a wide range of materials, including metals and polymers, and tends to happen most frequently at high temperatures.

Understanding the 3 stages of creep failure

Here are the three distinct phases of creep failure and their scientific definition.

Primary creep

Also sometimes referred to as transient creep, primary creep describes the initial stage. The material experiences an increase in strain hardening and creep resistance – where it responds to pressure while attempting to hold its shape.

Secondary creep

In the secondary stage, the material experiences a repeating process of strain hardening and recovery. The creep rate is constant and this stage, also known as steady-state creep, can last for a significant portion of time.

Tertiary creep

The third and final stage of creep takes place at an accelerated pace as the material rapidly moves towards deformation and failure.

Can creep failure happen at an ambient temperature?

Yes. Even though extreme temperatures can elevate the risk of creep failure, it can occur in ambient temperatures too. So all materials should be thoroughly tested, regardless of the likelihood the end product will be stored in ambient temperatures.

Creep failure in materials

Creep failure is present in a huge range of materials and can affect many types of materials. From wood to plastic, metal to glass, creep failure testing is essential for all. Find out more about the key signs of creep failure in plastic or the difference between creep failure and fatigue in metal .

The best tests for creep failure

By its nature, creep failure is a time dependent issue. Creep or creep to fail testing must apply load and pressure for the appropriate amount of time for each material and its configuration to see if it will withstand the sort of rigors it is expected to encounter throughout its lifespan.
Want to find out the best ways to test for creep failure on your chosen material? Get in touch with the team at Industrial Physics!

Help with your creep to fail testing

Need help ensuring your materials are fit for purpose? Looking for advice when it comes to creep testing? We’re perfectly placed to provide the support you’re looking for.

We have more 3000 unique products to help you find the ideal testing solution. At Industrial Physics, we’ve got all aspects of creep failure testing covered. Find out more about how we could help you create the right testing environment for your materials, get in touch to speak with our team.