What is ISO 899-2 - creep behaviour of plastics using three-point loading about?
Plastics are widely popular because they are durable, flexible, lightweight and can be shaped into any form. ISO 899-2 specifies a method for determining the flexural creep of plastics in the form of standard test specimens under specified conditions such as those of pre-treatment, temperature, and humidity. The test applies only to a simple freely supported beam loaded at mid-span.
The method mentioned in ISO 899-2 is suitable for use with rigid and semi-rigid non-reinforced, filled and fibre-reinforced plastics materials (see ISO 472 for definitions) in the form of dumb-bell-shaped test specimens moulded directly or machined from sheets or moulded articles.
Note: The method may be unsuitable for certain fibre-reinforced materials due to differences in fibre orientation.
Who is ISO 899-2 - creep behaviour of plastics using three-point loading for?
ISO 899-2 on creep behaviour of plastics using three-point loading is useful for organizations associated with:
- Manufacturers and designers of plastics products
- Engineering-design teams
- Research and development teams
- Quality control teams
Why should you use ISO 899-2 - creep behaviour of plastics using three-point loading?
Plastics are often used outdoors and indoor locations where they are exposed to different levels of stress applied through compressive, tensile, shear, or flexural loading. Polymeric material tends to deform permanently under the influence of constant stress which is called creep.
The method mentioned in ISO 899-2 is intended to provide data for engineering-design and research and development purposes. Data for engineering-design purposes requires the use of extensometers to measure the gauge length of the specimen. Data for research or quality-control purposes may use the change in distance between the grips.
The guidelines in ISO 899-2 help you determine the creep behaviour of plastics, for further industrial uses, so that end customers can use superior quality products.
