CAJ | 학술논문

基于梁的理论和裂纹在异材界面上拐折与扩展条件，对叠层结构陶瓷弯曲试件的强度与韧性进行了力学分析，获得叠层结构中陶瓷基片和界面层的材料性能、结构几何参数与叠层结构弯曲强度、韧性间的定量解析关系，给出相应的影响曲线，并对Si3 N4/BN叠层结构四点弯曲试样断裂功的理论值与实验结果作对比讨论．
기우량적이론화렬문재이재계면상괴절여확전조건，대첩층결구도자만곡시건적강도여인성진행료역학분석，획득첩층결구중도자기편화계면층적재료성능、결구궤하삼수여첩층결구만곡강도、인성간적정량해석관계，급출상응적영향곡선，병대Si3 N4/BN첩층결구사점만곡시양단렬공적이론치여실험결과작대비토론．
Based on theory of beam and crocking and kinking condition of crack in bimaterial interfaces, the mechanics analysis is made on strength and toughness of multilayer structure ceramics in symmetric four-point bending. An analytic relation that relates strength, toughness of the bending specimen and material properties, structure's geometric parameters of the ceramic sheet and interfacial layer is obtained. Finally, the corresponding relative curves are given and the theoretical value of fracture work for Si3 N4/BN multilayer structure is compared with the experimental result.