Abstract
The influence of specimen size of Charpy impact test on the absorbed energy characteristic was investigated for evaluating the toughness of steel obtained from the actual bridge member with fire damage. V-notch Charpy specimens with different thickness were extracted from the steel applied a thermal cycle simulating fire. Charpy impact test was carried out on the specimens with considering the concept of the fire damage by using transition temperature shift concept. On the other hand, the absorbed energy per unit area for 5 mm thickness sub-size specimen with the fire damage was higher than that for full-size specimen, even though the test temperature was shifted. The results indicated that the degree of shift temperature was different between the steels with and without the fire damage.
