ELASTICATED FABRIC GRIPS
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Fabric loop grips are used for tensile and elongation testing of wide or narrow elastic fabrics. This test is performed with various types or combinations of materials and tested at a constant rate of extension. Loop tension at specified elongation and elongation at specified loop tension are test procedures that require three cycles to bring the specimen under test to a specified point and returned to a zero value as described in ASTM D4964.
Principle of Operation These grips have a U-shaped body style and are also referred to as band clamps. One edge of the U is attached to a connector that mounts to the moving crosshead and to the base of the testing machine. The other edge of the U has a 6.5 mm (0.25 in) diameter that makes contact with the specimen. The specimen is wrapped onto itself and sewn at the end with two rows using a single needle stitch, forming a loop. This loop is then inserted around both the upper and lower grips and made ready for testing.
Application Range • Types of loading: Tension/tension testing • Types of material: Elastomeric fabrics • Specimen types: Looped fabric ELASTICATED FABRIC GRIPS Catalog Number
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2717-080
Testing Standards
ASTM D4964
Specimen Width
Capacity kN
kgf
lbf
mm
in
2.5
250
560
76
3
Upper Fitting
6 mm Clevis pin (type Om)
Lower Fitting
6 mm Clevis pin (type Om)
Upper Effective Length
Anvil Diameter
Accessory Width
Accessory Weight
Temperature Rating
mm
in
mm
in
mm
in
kg
lb
°C
°F
97
3.8
6.4
0.25
108
4.3
0.5
1.1
+10 to +40
+50 to +100
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