ISO 14126 In-Plane Compressive Properties of Fiber-Reinforced Plastic Composites
ISO 14126 describes the methodology for determining the in-plane compressive properties of fiber-reinforced plastic composites. The standard describes two different methods for evaluating the properties:
- Method 1: provides for shear loading of the specimen
- Method 2: provides for end loading or mixed loading of the specimen
Ultimately, these two methods require two different test fixtures. The more common method of the two is Method 1, which uses a Celanese-type fixture (shown at right). Also, in both methods, the specimen gauge length is completely unsupported.
For the Method 1 test, the specimen is supported in the fixture and compressed, using hardened-steel compression anvils, along its major axis at constant rate of displacement until the specimen fractures. Because of the typically high forces that are recorded during this test, we usually recommend a dual-column electromechanical testing system.
Finally, accurate strain measurement is required for making measurements such as compressive modulus or compressive failure strain. Therefore, either a suitable extensometer or bonded resistance strain gauges are required for measuring axial strain throughout the test.
5900 Universal Testing Systems are engineered for precision, built for durability, and offer the flexibility for changing requirements. They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator. A wide range of models are available for testing capacities from < 100N up to 600kN.
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Bluehill Universal Software is built from the ground-up for touch interaction and an intuitive user experience. Discover simpler and smarter testing with features such as pre-loaded test methods, QuickTest in seconds, enhanced data exporting: and Instron Connect – a new feature that provides a direct communication link to Service. Users of previous versions of software such as Bluehill 2 and Bluehill 3 can easily upgrade to the newest version of Bluehill.
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The 2630-100 series of extensometers offers speed of attachment and ease-of-use. The light-weight, rugged cross-brace design eliminates errors caused by physical distortion, while built-in protection ensures that damage is not caused by over-extension. The low operating-force arms of the extensometer reduce the possibility of knife-edge slippage when testing hard or smooth surfaced materials.
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