New high-temperature COD gages with improved accuracy and higher test frequency capabilities measure crack length at temperatures up to 600 °C. Use for KIC, JIC, R-curve, and Fatigue Crack Growth testing in an environmental chamber – no cooling of the COD gage is required. https://www.epsilontech.com/products/environmental-chamber-fracture-mechanics-cod-gage-model-7641/
New COD Gages for Fracture Mechanics and da/dN Testing up to 600 °C
