Evaluation of Microfracture Strength of Surface Layers of Ceramics Using a Spherical Indenter.
Evaluation of Microfracture Strength of Surface Layers of Ceramics Using a Spherical Indenter.
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使用球形压头评估陶瓷表面层的微断裂强度。
DOI：
10.1299/kikaia.60.1538
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
T. Takamatsu
中科院分区：
文献类型：
--
作者：
M. Ichikawa;Kohji Ohgushi;T. Takamatsu
研究了一种用于结构陶瓷表层微断裂强度评价的球形压痕法。使用Si3N4球形压头对Si3N4板进行了压痕试验以及常规的弯曲试验。使用基于威布尔分布的有效面积的概念，从压痕试验和弯曲断裂强度评估的环裂纹萌生强度之间的关系进行了检查。使用相同的概念，也检查了环裂纹萌生强度的压头尺寸依赖性。
An investigation was carried out in order to develop a sphere indentation method for evaluating microfracture strength of surface layers of structural ceramics. Indentation tests on Si3N4 plates using a Si3N4 spherical indenter as well as conventional bending tests were carried out. The relationship between the ring crack initiation strength evaluated from indentation tests and bending fracture strength was examined using the concept of effective area based on the Weibull distribution. The indenter size dependence of the ring crack initiation strength was also examined using the same concept.