ASTM D3479 determines the fatigue behavior of polymer matrix composite materials subjected to tensile cyclic loading. The composite material forms are limited to continuous-fiber or discontinuous-fiber reinforced composites for which the elastic properties are especially orthotropic with respect to the test direction. ASTM D3479 is limited to un-notched test specimens subjected to constant amplitude uniaxial in-plane loading where the loading is defined in terms of a test control parameter. The primary test result is the fatigue life of the test specimen under a specific loading and environmental condition. Replicate tests may be used to obtain a distribution of fatigue.
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Recommended Test Machine
Static and fatigue forces up to 50 kN (11,250 lbf)
Frequency ratings up to 75 Hz
Oil-free, all electric actuator for clean test conditions
Lower purchase, operating, and maintenance costs than hydraulic equivalents
Static and fatigue forces up to 25 kN (5,500 lbf)
Frequency ratings up to 100 Hz
Servohydraulic
Small, portable footprint
Recommended Testing Accessories
Fatigue ratings from 25 kN to 100 kN (5,625 lbf to 22,500 lbf)
Rating increases to 150 % when used in static applications
Works well with either round or flat specimens
Maximum specimen thicknesses or diameters from 12 mm to 20 mm (0.47 in. to 0.79 in.)
Load ratings from 25 kN to 1,000 kN (5,625 lbf to 225,000 lbf)
Rated for both static and fatigue testing
Hydraulic actuation
Temperature ratings up to 350°C (662°F)
Made per ASTM D3479 standards
Measures displacement for axial tensile, compression, and cyclic testing
Gage lengths from 10 mm to 50 mm (0.5 in to 2.0 in)
Measuring ranges from 5% to 100% strain
Lightweight and self-supporting
