Three-Dimensional Cohesive Zone Modeling on Interface Crack Initiation from Nanoscale Stress Concentration
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Three-Dimensional Cohesive Zone Modeling on Interface Crack Initiation from Nanoscale Stress Concentration
- 发表刊物：
- J. Solid Mechanics and Materials Engineering
- 摘要：
- In the previous study, crack initiation from a free edge along an interface between
Cr microdot and SiO2/Si substrate was experimentally investigated and
theoretically analyzed within the framework of fracture mechanics. Since the size
of stress concentrated zone confined to a nanoscale, it was questionable whether the
fracture mechanics was still valid or not. The cohesive zone model (CZM) has
advantages in describing cracking behavior along an interface. However, its 3-D
applicability in nanoscale components has not yet been investigated. In this study, a
three-dimensional cohesive zone model of exponential type is used to extract the
toughness for the crack initiation along the interface between Cr microdot and
SiO2/Si substrate with the nanoscale stress concentration. After the CZM
parameters for the Cr/SiO2 interface cracking are calibrated by an experiment, its
validity is examined by other experiments. This study demonstrates the
applicability of the three-dimensional CZM to the characterization of interface
fracture behavior in nanoscale components.
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- 合写作者：
- Yan YB, Sumigawa T, Shang FL, Kitamura T
- 卷号：
- 5(2)
- 页面范围：
- 117-127
- 是否译文：
- 否
- 发表时间：
- 2011-01-20