ISO 8067 Flexible Cellular Polymeric Materials Tear Strength
This method is used to investigate the tear strength of flexible cellular polymeric materials that have a specified thickness. This test is for the determination of peak force and the tear strength characteristics of the product for a given rate of displacement.
In principle, the test specimen is clamped in the jaws of the testing machine, making sure that the test specimen is properly gripped. A force is applied at a constant rate of displacement - tearing the specimen until fracture. ISO 8067 allows for two types of specimens: Method A uses a trouser tear specimen, while Method B uses an angled test piece.
The challenges of testing to this standard:
- Data collection
- Specimen gripping
Our solutions:
- Data collection – The tear force is calculated from the force peaks collected throughout the test. We recommend using a high-speed intelligent test data logging rate found in Bluehill® Universal so users can be sure all critical peaks are captured.
- Specimen gripping – We recommend pneumatic side action grips with rubber coated jaw faces for clamping of the material fitted to a tensile testing machine. While manual action grips will work, many of our users prefer the pneumatic action grips for ease of use, productivity, and better repeatability. Pneumatic side action grips allow you to set a clamping pressure, while the manually operated grips depend on the operator's strength. Gripping pressure and specimen alignment are very important in these tests. Too much gripping pressure can produce premature breaks, while not enough gripping pressure can lead to specimen slippage or breaks at or near the jaws. These grips are usually fitted to single column or dual column machines.
We suggest reviewing ISO 8067:2008 to fully understand the test fixture and results requirements.
2712-04X Series Pneumatic Side-Action Grips
Pneumatic side-action grips offer a versatile gripping solution for a wide range of materials. Rated capacities between 1 and 10 kN.
- Produits
- 03/22/2022
- 1.13 MB
2710 Series Screw Side Action Grips
Screw side-action grips provide a very simple and efficient method for holding test specimens in a wide range of applications. The dual – acting design of 2710-100 series grips means that jaw faces can be adjusted to accommodate different specimen thicknesses. This ensures that the line of tensile force remains concentric with the grip body. They can be equipped with a selection of interchangeable grip jaw faces in various sizes and choice of surfaces including smooth ground, rubber-coated and serrated. Line contact and special coated faces are also available.The unique ‘snap-on’ jaw face attachment makes changing faces extremely quick and simple.
- Produits
- 06/28/2017
- 1.29 MB
6800 Series Premier Testing Systems Brochure
Instron 6800 Series Universal Testing Systems provide unparalleled accuracy and reliability. Built on a patent-pending Operator Protect system architecture with an all-new Smart-Close Air Kit and Collision Mitigation features, the 6800 Series makes materials testing simpler, smarter, and safer than ever before.
- Produits
- 02/10/2020
- 1.93 MB
3400 Series Universal Testing Systems Brochure
Instron 3400 Series universal testing systems for tensile, compression, bend, and other material property tests.
- Produits
- 06/27/2022
- 2.69 MB
Bluehill Universal Brochure
Bluehill Universal is Instron’s advanced materials testing software, designed for intuitive touch interaction and streamlined workflows. It offers pre-loaded test methods, QuickTest for rapid setup, enhanced data exporting, and Instron Connect for direct service communication. Users of Bluehill 2 and Bluehill 3 can easily upgrade to the latest version for improved performance and usability
- Produits
- 02/26/2017
- 3.77 MB
