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- ceramic fracture toughness 陶瓷断裂韧性
- High fracture toughness and insulation resistance. 高断裂强度及绝缘性能。
- The specimen with natural sharp cracks are important for measuring the fracture toughness KIC of structural ceramic materials. 准确测试陶瓷材料断裂韧性K_(IC)的关键是预制具有原生裂纹的试样。
- The methods of direct indentation,indirect indentation and notched beam bending are used respectively to study the fracture toughness of four ceramic cutting tool materials. 运用直接压痕法、间接压痕法和切口梁法分别对四种陶瓷刀具材料进行断裂韧性的测试研究。
- Results showed that the flexural strength,hardness and fracture toughness were increased for Al2O3 ceramic with the additions of TiB2.Further improvement in frac-ture toughness can be obtained for Al2O3/TiB2 ceramic with the additions of SiC whisker. 而TiB2颗粒和SiC晶项协同对Al2O3进行增韧补强可使其断裂韧性显著提高。 Al2O3/TiB2陶瓷材料的主要增韧机理有；
- The fracture toughness of the h-BN/Si3N4 ceramic composite decreases with increasing h-BN content; however,the reduction extent is not pronounced due to the effect of the h-BN particles on the cracks propagation. 随着h-BN含量增加;h-BN/Si3N4陶瓷复合材料的断裂韧性下降;但由于h-BN颗粒对裂纹扩展的影响;因而其下降程度不大.
- The fracture toughness was strongly affected by temperature and loading rate. 结果表明:温度和加载速率都对断裂韧度产生影响;
- ASTM E813-1989. Standard test method for JIC, a measure of fracture toughness. 惠虎.;解理断裂局部法理论的关键技术改进及应用研究:[博士学位论文]
- The accepted designation for the plane-strain fracture toughness under these environments is this. 在这些环境下平面应变断裂韧性所采用的符号是这个。
- Their fracture toughness and hardness were determined with Vicker's indentation test machine. 在维氏硬度仪上测试断裂韧性和硬度。
- The material fracture toughness was adequate to ensure development of the full fatigue resistance of the weld detail. 材料的断裂韧性可充分满足焊缝细节疲劳抗力的发挥。
- Complications included crown mobility, ceramic fracture, chronic gingisitis and food impaction, gingival discoloration, carries and acute pulpitis, masticatory pain, tooth mobility. 修复后出现的问题包括冠松动脱落、瓷崩、牙龈炎、食物嵌塞、牙龈变色、基牙继发龋、牙髓炎、咬合痛及基牙松动。
- The electroslay welds were found to have a lower level of fracture toughness than implied from qualification tests. 人们发现电渣焊缝的断裂韧性较鉴定试验所给的结果要低。
- Result Com plications included crown mobility, ceramic fracture, chronic gingisitis and f oo d impaction, gingival discoloration, carries and acute pulpitis, masticatory pai n, tooth mobility. 结果:修复后出现的问题包括冠松动脱落、瓷崩、牙龈炎、食物嵌塞、牙龈变色、基牙继发龋、牙髓炎、咬合痛及基牙松动。
- The relationship between fracture toughness and crystal orientation hasbeen also examined. 断裂韧性与晶体学取向的关系亦作了分析。
- Result Complications included crown mobility, ceramic fracture, chronic gingisitis and food impaction, gingival discoloration, carries and acute pulpitis, masticatory pain, tooth mobility. 结果：修复后出现的问题包括冠松动脱落、瓷崩、牙龈炎、食物嵌塞、牙龈变色、基牙继发龋、牙髓炎、咬合痛及基牙松动。
- Aside from the effect of temperature on fracture toughness, no other environmental effects are probable. 除温度对断裂韧性的影响外，没有其它环境因素的影响。
- Result: Complications included chronic gingivitis, acute pulpitis, masticatory pain, food impaction, tooth mobility, ceramic fracture, gingival discoloration, and esthetic unsatisfactory appearance. 结果:修复后出现的问题包括慢性牙龈炎、急性牙髓炎、咬合痛、食物嵌塞、牙松动、瓷崩、牙龈变色和美观效果差。瓷崩是金属烤瓷冠修复后最常见的问题。
- A Charpy test is usually much less expensive to perform than a fracture toughness characterization experiment. 夏比（冲击）试验通常要比断裂韧性试验的费用低得多。
- Result:Complications included chronic gingivitis,acute pulpitis,masticatory pain,food impaction,tooth mobility,ceramic fracture,gingival discoloration,and esthetic unsatisfactory appearance. 结果:修复后出现的问题包括慢性牙龈炎、急性牙髓炎、咬合痛、食物嵌塞、牙松动、瓷崩、牙龈变色和美观效果差。
