Knowledge Centre
-
Tear Testing
Tear Testing
Tear testing is a measurement of the resistance of sheet type materials to tearing. A common approach is to apply a tension load to a sample that has been prepared with a cut, slit or notch to begin the controlled tear. It is accomplished by holding the sample in tensile grips, one on each side of the tear, conditions for which are outlined by the applicable test standard. Processing machinery used in manufacturing sheet and film type materials can vary in their performance, hence the need for tear testing.
Benefits of Tear Testing
These include:
- Ensuring sheet type materials are fit-for-purpose
- Reducing material costs and achieving lean manufacturing goals
- Establishing and maintaining consistency in manufacture
- Compliance with industry standards
Standards
Standards for tear testing have been developed by many respected organisations. Some of the more common standards encountered include:
- ASTM D-624-00(2007) Standard Test Method for Tear Strength of Conventional Vulcanised Rubber and Thermoplastic Elastomers
- ASTM D-1004-08 Standard Test Method for Tear Resistance (Graves Tear) of Plastic Film and Sheeting
- ASTM D-2261-07a Standard Test Method for Tearing Strength of Fabrics by the Tongue (Single Rip) Procedure
- ASTM D-2262-83 Test Method for Tearing Strength of Woven Fabrics by the Tongue (Single Rip) Method
- TAPPI T-470 Edge Tearing Resistance of Paper (Finch Method)
