Fatigue testing is a useful method for characterizing material or component behavior during cycling loading. Understanding fatigue properties is one of the most crucial elements of research and development, product safety, and material verification programs.
A fatigue test measures how cyclic forces will affect a product or material over time, using varying loads, speeds and environmental conditions to create predictive patterns for material behavior. While a large portion of fatigue tests are performed to plot stress (S) against the number of cycles to failure (N) (also known as an S-N curve), they can also be useful for simulating specific scenarios and investigating real-world failures.?
Commonly tested materials & components?
- Metals and alloys
- Plastics and polymers
- Additively manufactured materials
- Medical devices
- Pipes & tubing
- Welded samples & structures
- Industrial components, sub-assemblies, and equipment
- Gas turbine engines
- Engine airfoils
Some products, such as medical devices, must conform to rigorous international standards for endurance properties. Other products, such as industrial components and consumer goods, often see manufacturers and testing companies working together to develop a customized fatigue testing methodologies suited for the specific product’s application and end-use environment.
Fatigue testing with Element
Element's laboratories around the world provide testing solutions to help make certain that your products and materials are safe and fit for purpose. Whether you require testing to existing standards or are interested in creating a custom test program, our experts?are ready to assist with your fatigue testing needs.
For more information about our fatigue testing methods or to request a quote, contact us today.?
Fatigue Testing Methods
Low Cycle Fatigue (LCF)
Low cycle fatigue testing is used for applications where materials are subject to extremely high mechanical stresses, and where plastic deformation is likely to occur.
High Cycle Fatigue (HCF)
High cycle fatigue is used for materials that experience low applied forces and where deformation is primarily elastic in nature.
Thermomechanical Fatigue (TMF)
Thermomechanical fatigue testing applies both varying load levels and varying temperatures to predict how materials will behave in thermal environments.
Rotating Beam Fatigue
Rotating beam fatigue testing is another method which is utilized to generate high cycle fatigue curves at a higher frequency than traditional HCF methods with single or multi-point bending stresses.
Stress Rupture Testing
Stress rupture is the sudden and complete failure of a material under stress. Loads may be applied by tensile bending, flexural, biaxial or hydrostatic methods.
Measuring load over an extended period of time, creep testing programs use continuous load and elevated temperature to test for eventual material failure.
Additional fatigue testing capabilities
- Axial fatigue testing
- Torsional fatigue testing
- Shear fatigue testing
- Proof load testing
- Bending fatigue testing
- Fatigue crack growth testing
- Resonance fatigue testing
- Multiple degrees of freedom fatigue testing
- Multi-channel/compound cyclic testing
- Strain Control
- Stress Control
- Displacement Control
- Frequency up to 100 Hz (rotating beam up to 150 Hz)
- Forces up to 250 kN
- Test temperatures from -320 to 2400 F)
- Custom and special project setups available
Standards we test to
Aerospace Industries Association/National Aerospace Standards
NAS 1069, NASM 1312-11, NASM 1312-21
ASTM C1360, ASTM C1361, ASTM D7774, ASTM D671, ASTM D3479, ASTM D4482, ASTM D6873, ASTM D6926, ASTM E206, ASTM E2368, ASTM E399, ASTM E466, ASTM E488, ASTM E606, ASTM E647, ASTM E1190, ASTM E1290, ASTM F1160, ASTM F1717, ASTM F1800, ASTM F2345, ASTM F2706
British Standards Institute
BS 3518, Part 2 & 3, BS EN 1992-1-1
General Motors North America
GMN7152, GMW16704, GMW16705
International Organization for Standardization
ISO 1143, ISO 12107, ISO 3800, ISO 6157-3
Japanese Industrial Standard
Military/Department of Defense Standards
National Aerospace Standards/Aerospace Industries Association
NASM 1312-11, NASM 1312-21, NAS 1069
SAE J 123
We also test to a number of customer standards, including GE, Honeywell, SAFRAN, Pratt & Whitney, and MTU.?
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