Tear and Friction Test

Tear and Friction Test
Tear resistance is a common measurement of the ability of thin plastic or rubber sheet or film to resist tearing. For paper, tear resistance is the force required to tear a single ply of paper after tearing has been started. Tear resistance of textiles is the force required to propagate a single-rip tear, typically starting from a cut.

Measuring the static and kinetic coefficients of friction, or COF, is a common test needed for multiple applications. Friction tests show how paper material surface roughness effects various applications, such as paper used in a copy machine. Special fixtures are added to a typical TestResources test machine to perform these tests.
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TouchPad based Tear and Friction (COF) Machines - Testers

Computerized Tear and Friction (COF) Machines - Testers

More Info: Test Machine Selection - Helpful Considerations

Least Expensive Test Machine Considerations
  • It is important to discuss your application requirements with a TestResources applications engineer. Clearly understood requirements lowers risks by eliminating potential misunderstandings that increase costs. Help us understand your goals and needs and you will save money with TestResources.

  • Our product line is modular or 'lego-like' which makes it possible buy very affordable configurations and delay expenditures until they become a requirement. Our modular line spans requirements from 'least expensive' to 'most flexible and versatile'.

  • A machine that utilizes a standalone controller is much more affordable than one that requires a computer. Standalone controllers feature optional software that enables use to expand to a PC, including control of the test machine, export of data to a PC, curve plotting and analysis of data. A standalone controller also is a better choice in many production testing applications.

  • Finally, the machines force/speed requirements impact the price of the machine. Higher forces and fast speeds demand bigger motors and increase the purchase price.
Most Versatile Test Machine Considerations
  • Versatility implies being able to reset the machine for different materials, different test methods, and different operators on an as needed basis.

  • A PC based controller is more versatile than a standalone controller. Versatility is valuable where test demands or operators change often and in cases where the test requirements are unknown - such as research and testing service lab environments.

  • A dual column load frame has more versatility than a single column frame but cannot then be used easily for testing large samples or mounting a large temperature chamber. The good news is that our product line is modular or 'lego-like' which makes it inerently versatile. It is possible to buy very affordable configurations and delay expenditures until they become a requirement. Our modular line makes it possible to decide where to spend monies to increase versatility or not.

  • A high force rated test machine performs more tests than a low force rated machine. Higher forces and faster test speeds require bigger motors and increase the purchase price. The addition of a low force load cell is all that is needed to perform low force measurements.
Do you need to perform fatigue tests?
  • A fatigue test machine is capable of performing virtually any and all mechanical tests. These include static tensile, compression, peel and tests such as stress relaxation and creep. In addition a fatigue tester can generate dynamic impact tests, simulate loading service conditions, perform high cycle tests that last millions of cycles.

  • Multichannel tests, such as biaxial tests, are most commonly configured as fatigue testers for a variety of reasons.

  • The term 'cyclic' tester may refer to an electromechanical test machine that can cycle (slowly) between position or load limits. We differentiate that type of machine from our fatigue tester.

  • It is critical to discuss your fatigue application requirements with a TestResources applications engineer. Clearly understood requirements lowers risks by eliminating potential misunderstandings that increase costs. Help us understand your goals and needs and you will save money with TestResources.

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Popular Tear Test Methods and Equipment
Tear Strength of Rubber & Elastomers per ASTM D624

Tear Resistance (Graves Tear) of Plastic Film and Sheeting per ASTM D1004

Tear Strength on Nonwoven Fabrics by Tongue (Single Rip) Procedure per ASTM D5735

Tearing Strength of Nonwoven Fabrics by Falling-Pendulum (Elmendorf) Apparatus per ASTM D5734

Popular Friction Test Methods and Equipment
Static and Kinetic Coefficients of Friction of Plastic Film and Sheeting per ASTM D1894

Tear Testing Applications
Tear Test Methods for Testing Rubbers

Tear Test Standards for Testing Textiles


Tear Test Standards for Testing Geotextiles and Geosythetics


Tear Test Standards for Testing Plastics
Friction Testing Applications
Friction Test Methods for Testing Rubbers

Friction Test Standards for Testing Paper & Paper Products

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