Information on the most widely used ASTM standards within the materials testing industry
ASTM D6775 : Standard Test Method for Breaking Strength and Elongation of Textile Webbing, Tape and Braided Material
ASTM D6775 test method covers the determination of the breaking strength and elongation of textile webbing, tape and braided materials using a split-drum type specimen clamp. It is limited to materials with a maximum width of 90 mm (3.5 in.) and a maximum breaking strength of no more than 89000 N (20000 lb).
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Tensile testing of webbing / belt / tapes materials involves the testing of flat strips of high-strength woven material used in various applications ranging from sporting goods to military apparel and seat belts. or high performance aramids (Kevlar) and ultra-high molecular weight polyethylene (Dyneema). The woven design without cut fiber at the edges results in a lightweight and strong product.
Webbing grips are necessary for any webbing or strap type textile material. Some manufacturers may also call this a ribbon , wrapping or a capstan fixture. Basically it is any thin and wide material, tapes can also be tested as well. By wrapping the webbing around the drum one can induce a perfect grip. The coefficient of friction will determine how many times the material must be wrapped around the center cylinder. The working principal of this fixture is to spread the strain over a longer area which reduces the propensity for it to break or slip at the wrong time.
Popular usage:
Seatbelts are often tested to this standard, as well as any tie downs that may be used in the shipping and transportation industry. Safety straps and military equipment also use this type of woven textile material.
The wrap grip solution is also gaining popularilty amongst the bio-medical sector. Small redesigns of this setup can be used to pull tissues without fear of ripping the specimen at the fixture interface. The drum column distributes the strain over a wider area which reduces local stresses which could propagate a tear.
Webbing is a strong fabric woven as a flat strip or tube of varying width and fibres often used in place of rope. It is a versatile component used in climbing, slacklining, furniture manufacturing, automobile safety, auto racing, towing, parachuting, military apparel, load securing, and many other fields.
Keywords:
Braided Fabrics - Breaking Strength - Deformation - Elongation - Fabric Tape - Nonwoven Fabrics - Tensile Strength - Webbing - Woven Fabrics.
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