Summary of Test
Method 4108 within Federal Standard 191A is a simple test method used to determine the breaking strength and elongation of textile webbing, tape, and similar braided materials. The method is essentially the precursor to ASTM D6775, but still referenced today. Split drum grips are required to run this test.
Before conducting Method 4108, it is important to read the entire specification in Federal Standard 191A.
Recommended Equipment
Testing Procedure
- Prepare the test specimens as described in the test method, using the full-width of the webbing to be tested.
- Clamp the ends of the webbing samples into the split drum grips, and remove slack. The distance between the grips should be about 10.5 inches.
- Apply provisions for measuring elongation, if desired, as described in the standard.
- Apply the tensile force to the specimen at the constant rate specified in the test standard.
- If necessary, stop the test at a specified force prior to break to gather elongation data.
- Continue the application of the tensile force until rupture and record the breaking force.
Just Ask!
Questions about running FED 191A on your system?
