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. The tear force is calculated from the force peaks. We recommend using a high-speed intelligent test data logging rate. This is the transfer rate to the PC of 100Hz or more to capture and record all the peaks and troughs.
We used pneumatic 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 action grips allow you to set a clamping pressure, while the manually operated grips depend on the operator's strength (which may not be so repeatable). We find that 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 design. Testing software, such as Bluehill®, is used to input specimen details, set the desired test control, automatically calculate the desired results and statistics, and produce a test report all in accordance with the standard
We suggest reviewing ISO 8067 to fully understand the test fixture and results requirements.
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.
- 1.3 MB
Instron 3300 Series Universal Testing Systems for Tensile, Compression, Bend, and other material property tests.
- 12.0 MB
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.
- 2.8 MB
Bluehill 2 material testing software is the second generation of the original fully-integrated modular software package that provides easy tailored application solutions for today's laboratory managers and test technicians. In addition to the standard testing applications including tensile, compression, flexural, peel, tear and friction, Bluehill 2 has several new and unique added features.
- 2.5 MB