Papers
Release Time: 2025-04-30Hits:
- Date:2025-04-30
- Title of Paper:Three-Dimensional Cohesive Zone Modeling on Interface Crack Initiation from Nanoscale Stress Concentration
- Journal:J. Solid Mechanics and Materials Engineering
- Summary: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.
----------------------------------------------
如果您需要全文，请email我！ - Co-author:Yan YB, Sumigawa T, Shang FL, Kitamura T
- Volume:5(2)
- Page Number:117-127
- Translation or Not:No
- Date of Publication:2011-01-20
