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Various aspects of the failure behaviour initiated from mode-II loaded cracks are discussed: validity criteria and minimum size specimen requirements for measuring the fracture toughness K IIc ; energy balance of the process of initiation of kinked cracks including compressive notch tip stress...
A theoretical model has been developed to investigate the effects of through-thickness pinning (z-pin) on mode I delamination. Computer simulation results are presented to understand the mechanism of z-pin reinforcement. Bridging force of the z-pin is calculated by a single pin pull-out model....
The bonded area is largely affected by the surface morphology and mechanical properties of materials by surface activated bonding (SAB) process, because the room temperature bonding process is carried out under a low temperature and low pressure for short time. Accordingly, interfacial defects...
The interfacial strength of SiC/SiC composites fabricated by hot-pressing (HP) and CVI method was measured by push-in test, and the relation between interfacial and mechanical properties of the composites was investigated. Maximum strength and fracture energy of the CVI-composite was higher than...
The combined effects of temperature and frequency on the crack growth rate and the failure life were investigated using the compact tension specimens of 12Cr steel under creep and creep-fatigue interaction conditions. The creep-fatigue tests were performed by introducing the hold time of the...
Since pressure vessels for petroleum use are operated at high temperature high pressure hydrogen gas, it is a special concern whether a cracks at a stressed region grow by internal hydrogen embrittlement (IHE) environment during shutdown period, i.e., hydrogen absorbed steels exposed to low...
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