Fracture Mechanics Clip-On Gages

For fracture mechanics studies, these COD gages are in compliance with standardized test methods, such as ASTM E1820 for determination of fracture toughness properties of metallic materials.

Gauge Lengths: 3 – 20 mm
Measuring Ranges: 2.5 mm – 12.5 mm
Temperature Range: -270 °C to 200 °C with -LHT option
Key Features: ASTM E399 and E1820 versions available; some models may be used for da/dN at 50 Hz or more

High temperature COD gages for use in split type materials testing furnaces with a slot for the ceramic rods. Water-cooled and furnace bracket mounted, these extensometers are for use to 1200 °C (2200 °F). The high temperature option allows use to 1600 °C (2900 °F). They are specifically designed for fracture mechanics testing.

Gauge Lengths: 5 – 20 mm
Measuring Ranges: 2.5 mm – 12.5 mm
Temperature Range: Ambient to 1600 °C
Key Features: Furnace COD gage

Designed for fracture mechanics testing in environmental chambers where the entire gage must be exposed to elevated temperatures. These capacitive sensors may be used up to 700 °C (1300 °F) without any cooling.

Gauge Lengths: 3 – 12 mm
Measuring Ranges: 2.5 mm to 12.5 mm
Temperature Range: Ambient to 700 °C
Key Features: Uncooled COD gage for environmental chambers