CAJ | 학술논문

鉴于目前岩石动态断裂韧度在研究方法上没有统一的标准,有必要对其进行研究。使用花岗岩制作中心裂纹圆盘试件,预制裂纹的宽度控制在1mm左右,在SHPB试验系统下进行动态冲击,得出试件两端的平均载荷带入到推广的中心裂纹圆盘试件应力强度因子计算公式算出动态断裂韧度。
감우목전암석동태단렬인도재연구방법상몰유통일적표준,유필요대기진행연구。사용화강암제작중심렬문원반시건,예제렬문적관도공제재1mm좌우,재SHPB시험계통하진행동태충격,득출시건량단적평균재하대입도추엄적중심렬문원반시건응력강도인자계산공식산출동태단렬인도。
There is no uniform standard for the methods of studying Dynamic fracture toughness of rock at present. Therefore it is necessary to make some research on the subject. By using granite to make the central cracked circular disk specimen, controlling the pre-crack width of about lmm, and making a dynamic impact under the SHPB test system, we get the average loading curves at the both ends of the specimen. Using this data to the calculation formula of promoted central cracked circle disk specimen stress intensity factors, we can calculate the dynamic fracture toughness.