ASTM F2992/F2992M-15 Standard Test Method for Measuring Cut Resistance of Materials Used in Protective Clothing Using the Tomodynamicometer (TDM-100) Test Equipment

The standard “ASTM F2992/F2992M-15 Standard test method for measuring cut resistance of materials used in protective clothing using tomodynamometer (TDM-100) test equipment” published by the American Society for Testing and Materials (ASTM) describes a test method for measuring the cut resistance of a material mounted on a mandrel and subjected to a cutting edge under a specified load using a tomodynamometer (TDM-100).

This test method is not applicable to highly porous materials that allow the cutting edge to contact the mounting surface prior to cutting.

The test apparatus used may have limitations in testing materials greater than 20 mm thick.

This test method evaluates the shear resistance of a material when subjected to a cutting edge under specified loads. Data obtained from this test method can be used to compare the shear resistance of different materials.

This test method addresses only the range of cutting hazards associated with a cutting action made by a smooth, sharp edge across the surface of the material. It does not represent any other cutting hazards to which the material may be exposed, such as serrated edges, saw blades or powered cutting tools. Nor does it represent puncture, tear or other modes of fabric failure.

For the purposes of this standard, the following definitions apply:

• Calculated shear load refers to the load required for a cutting edge to produce a cut when it travels a reference distance through the material under test in a shear resistance test. Calculated shear load is determined by performing a series of tests at three or more loads. A material with a higher calculated shear load is considered more shear resistant.
• Cut resistance refers to the property of a material or combination of materials to resist cutting when exposed to a sharp-edged device in the blade cut test.
• Cutting refers to the complete penetration of the cutting edge into the material, as demonstrated by electrical contact of the cutting edge and the conductive strip or substrate in blade shear resistance tests.
• Cutting distance refers to the distance the cutting edge travels to cut the specimen in the shear strength test.
• Cutting edge refers to a sharp-edged device used to initiate the cutting of a planar structure in shear strength tests.
• No shear refers to a trial in a shear resistance test where the load used is insufficient to cause a shear at the maximum allowable blade travel of the device. The maximum allowable blade travel for this test method is 50 mm.
• Protective clothing refers to a garment specifically designed and constructed to isolate all or part of the body from a potential hazard or to isolate the external environment from contamination by the wearer. In this test method, the potential hazard is shear.
• Reference distance, in cut resistance testing, refers to the standardized distance a blade must move across a material to produce a cut. The reference distance for this test method is 20 mm.

In performing the test, a cutting edge under a specified load is moved once along a specimen mounted in a specimen holder. The cutting distance from initial contact to shear is determined for each load. A series of tests at at least three different loads should be performed to determine a range of shear distances at different loads. The test method is repeated using multiple loads to determine the calculated shear load for the material.

This test method evaluates the cut resistance of a material when subjected to a cutting edge under specified loads. Data obtained from this test method can be used to compare the cut resistance of different materials.

This test method only addresses the range of cutting hazards associated with a cutting action made with a smooth, sharp edge across the surface of the material. It does not represent any other cutting hazards to which the material may be exposed, such as jagged edges, saw blades or powered cutting tools. It also does not represent punctures, tears or other modes of fabric failure.

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