The results showed that J_(Ic) was affected insignificantly by specimen size when it is made according to national standard GB2038-80. On the other hand, dJ/da was affected to certain degree by the specimen size.

• 结果表明,在满足GB2038-80所规定的试样尺寸要求的条件下,J_(1C)值受试样尺寸影响不大,但DJ/da值受试样尺寸影响较大。