As composites are becoming more widely used across industries, it’s important to understand their durability and damage tolerance. Composite fatigue testing evaluates the properties of the material when subjected to cyclic loading over time. Element offers fatigue testing of composites so you can be certain that your material is fit for purpose.
Composite fatigue testing varies from fatigue testing of metals because composites fibers are oriented, which means the fatigue properties depend on direction, layup, and failure mode.
Generally, fatigue properties are not a critical consideration for fiber dominated materials, as fatigue cracks arrest when reaching the next fiber. However, certain highly fatigued parts or structures, like rotor blades or propellers, are an exception. For these components, composite fatigue testing may be performed to better understand the fatigue life.
Methods of composite fatigue testing
Element offers different test methods for evaluating the fatigue properties of composite materials, including tension-tension, tension-compression, compression-compression, bending fatigue, and fatigue crack growth.
Depending on the method, fatigue tests may be performed in-plane in the fiber dominated direction, or out of plane with interlaminar loading to assess damage and damage growth. Our composite fatigue testing labs have multiple load frames equipped with aligned hydraulic grips for a range of load capacities to support the different methods.
Our fatigue testing expertise
Element’s global network of laboratories provides fatigue testing for a range of materials and products, including composites, metals, plastics, 3D printed products, and medical. Whether testing to a specific standard or developing a custom program, our experts can provide you with accurate, reliable results.
For more information about our composite fatigue testing services, or to request a quote, contact us today.
Tensile Testing of Composites
ASTM D3039 determines the ultimate tensile strength, ultimate tensile strain, tensile chord modulus of elasticity, Poisson’s ratio and transition strain of Polymer Matrix Composites (PMCs).
Polymer Matrix Composites (PMCs) are helping push the limits of aerospace technology with lighter, stronger, more durable materials. From structural components to interior materials, PMCs provide lightweight strength and unmatched durability.
Find out how Element's fatigue testing labs help companies meet quality requirements and create safer, stronger, more successful parts and products.
Understanding Composite Compression Test Methods
While there is no set standard for testing the compressive strength of composites, our experts can help you select the test methods that will generate the required result.