Compact Tension Grips

Compact Tension Grips

These compact tension grips are designed for plane-strain fracture toughness tests of metallic materials. Fracture toughness testing involves applying static loads to a notched sample to investigate brittle crack propagation and fracture conditions.

Compact tension grip sets include upper and lower grips and two 12 mm (0.47 in) diameter pins. The grips have a maximum capacity of 50 kN (11,000 lbf) and are available with three fitting sizes to directly couple with 50 kN, 100 kN and 300 kN load cells. In addition, a crack-opening displacement gauge is available to support the evaluation of crack propagation.

 

Relevant Materials

Metals

 

Relevant Specimens

Plates

 

Relevant Standards

ASTM E399

Operation

The fracture toughness samples are fixed to the grips using a clevis pin. The fracture toughness specimen is inserted into the grip opening and aligned with the grip’s pin holes. The clevis pins are inserted through the specimen and retained with a cotter pin on both ends. An optional crack-opening displacement gauge can be paired with these grips to measure displacement.

Specifications

Maximum Grip Capacity Applicable Specimen Thickness Pin Diameter Temperature Range Grip Size Upper Grip Mass Upper Grip Ø Fitting (Ø pin)
Lower Grip Ø Fitting (Ø pin)
Width
Length
kN kgf lbf mm (in) mm (in) °C (°F) mm (in) mm (in) kg (lb) mm mm
50 kN Compact Tension Grips for 250 kN Load Cells
50 5,000 11,000 25.4
(1.0)
12
(0.47)
-10 to 60
(14 to 140)
65
(2.6)
180
(7.1)
2.4
(5.3)
70
(35)
70
(35)
50 kN Compact Tension Grips for 100 kN Load Cells
50 5,000 11,000 25.4
(1.0)
12
(0.47)
-10 to 60
(14 to 140)
65
(2.6)
160
(6.3)
2.4
(5.3)
50
(17.5)
50
(17.5)
50 kN Compact Tension Grips for 50 kN Load Cells
50 5,000 11,000 25.4
(1.0)
12
(0.47)
-10 to 60
(14 to 140)
65
(2.6)
150
(5.9)
2.4
(5.3)
35
(13)
35
(13)
 

Dimensions of Compact Tension Grips

 

Ordering Information

Part Number Description
Compact Tension Grip Sets
Includes: upper and lower compact tension grips
 343-07385-08 50 kN compact tension grip set for 250 and 300 kN load cells
343-07385-04 50 kN compact tension grip set for 100 kN load cells
343-07385-03 50 kN compact tension grip set for 50 kN load cells
Accessories
343-08984-01 Crack-opening displacement gauge for compact tension grips

For Research Use Only. Not for use in diagnostic procedures.

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