## 5.1. Directional Strength Properties

Normal in-plane testing of composites in compression and tension is standardized: for example standard EN ISO 527-4. Tensile and shear tests measure important material characteristics such as elastic and plastic Poisson ratios, nonlinear hardening properties and failure limits, and are discussed in the following sections.

- In-Plane Tension Tests
- Out-of-Plane Shear

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