What is BS EN ISO 14574 - Ceramic composites - tensile properties about?
BS EN ISO 14574 is an international standard on fine ceramics which covers mechanical properties of ceramic composites at high temperature.
BS EN ISO 14574 specifies the conditions for determination of tensile properties of ceramic matrix composite materials with continuous fibre reinforcement for temperatures up to 2 000 °C.
BS EN ISO 14574 applies to all ceramic matrix composites with a continuous fibre reinforcement, unidirectional (1D), bi-directional (2D), and tri-directional (xD, with 2 < x ≤ 3), loaded along one principal axis of reinforcement.
Note 1: In most cases, ceramic matrix composites to be used at high temperature in air are coated with an antioxidation coating.
Note 2: The purpose of BS EN ISO 14574 is to determine the tensile properties of a material when it is placed under an oxidizing environment but not to measure material oxidation.
Who is BS EN ISO 14574 - Ceramic composites - tensile properties for?
BS EN ISO 14574 on ceramic composites - tensile properties is useful for:
- Fine ceramics manufacturers
- Mechanical engineers
Why should you use BS EN ISO 14574 - Ceramic composites - tensile properties?
Ceramic matrix composites (CMCs) are a subgroup of composite materials and a subgroup of ceramics. They consist of ceramic fibers embedded in a ceramic matrix. The fibers and the matrix both can consist of any ceramic material, whereby carbon and carbon fibers can also be regarded as a ceramic material.
The influence and quality of the fiber interface can be evaluated through mechanical properties.
Tensile tests of CMCs usually show nonlinear stress-strain curves, which look as if the material deforms plastically. It is called quasi-plastic, because the effect is caused by the microcracks, which are formed and bridged with increasing load. Since the Young's modulus of the load-carrying fibers is generally lower than that of the matrix, the slope of the curve decreases with increasing load.
BS EN ISO 14574 provides you with the conditions for determination of tensile properties of ceramic matrix composite materials with continuous fibre reinforcement for temperatures up to 2 000 °C. This can help you increase the safety and reliability in your organization in terms of production.