Compact Tension Fixtures for Fracture Mechanics

The Instron 2750 Series fracture mechanics grips are suited to static and dynamic testing of compact tension specimens in accordance with the following standards: 
  • ASTM E 399 
  • ASTM E 647 
  • ASTM E 813 
  • ASTM E1 290 
  • BS 7448

Principle Of Operation

The upper and lower grips are identical, and attach to the specimen by means of a clevis pin arrangement. The 10 kN and 50 kN grips require a set of adapters which provide for attachment to the load cell or actuator (via an appropriate attachment kit).Clevis pins are provided with spring clips or covers to prevent them from being shaken loose during testing.

Application Range

  • Type of loading: Static or dynamic (tension/tension)
  • Specimen material: Typically metallics
  • Specimen geometries: Compact tension (6.5 mm, 13 mm, 25 mm and 50 mm thickness)
Item Name Capacity Specimen Width Cat #
Additional Extension Rod  2780 120
Compact Tension Fixtures for 12.5mm Thick Compact Tension Specimens ±10 dynamic, 20 static kN ±2200 dynamic, 4500 static lbf 12.5 mm 0.49 in 2780-118
Compact Tension Fixtures for 25mm Thick Compact Tension Specimens ±50 dynamic, 100 static kN ±11,500 dynamic, 22,500 static lbf 25 mm 0.98 in 2780-119
Compact Tension Fixtures for 50mm wide Compact Tension Specimens ±250 dynamic, 500 static kN ±56,200 dynamic, 112,000 static lbf 50 mm 1.97 in 2750-120
High Temperature Clevis Grips 0.8 @ 1000 deg.C kN 175 @ 1832 deg.F lbf 12.5 mm 2420C