Fracture toughness measurements of ceramics by V notch technique
Fracture toughness measurements of ceramics by V notch technique
复制标题
采用 V 型缺口技术测量陶瓷的断裂韧性
DOI：
10.1016/0272-8842(92)90056-j
复制
发表时间：
1992
影响因子：
5.2
通讯作者：
H. Nakagawa
中科院分区：
文献类型：
--
作者：
H. Awaji;Tadao Watanabe;Y. Sakaida;H. Nakagawa
已经清楚的是，结构陶瓷的断裂韧性的值可以通过应用高度熟练的技术，将V形切口尖锐地切割成单边切口梁（SENB）和人字形切口（CN）的方法准确地获得。这些改进的方法分别被称为SEVNB和CVN方法，它们通过在切割中使用V形切片金刚石砂轮而成为可能。用这些方法对几种陶瓷进行了评价，并与单边预裂纹梁（SEPB）和常规CN方法进行了比较。断裂韧性的值只有轻微的分散，并同意彼此相当好，除了在传统的CN方法。
It has been made clear that the values of the fracture toughness of structural ceramics can be accurately obtained by applying the highly skilled technique of cutting a V-shaped notch sharply into the single edge notched beam (SENB) and chevron notch (CN) methods. These improved methods are referred to as the SEVNB and CVN methods, respectively, which are made possible by using a V-shaped slicing diamond wheel in cutting. Several kinds of ceramics were evaluated by these methods and the values were compared with those obtained by the single edge precracked beam (SEPB) and conventional CN methods. The values of the fracture toughness scattered only slightly and agreed quite well with one another, except for in the conventional CN method.