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1)  Crack growth rate
裂纹扩展率
1.
Based on the theory of time dependent fracture mechanics, a method for calculating creep crack growth rate is presented, including the parameters at crack tip related to time dependent fracture mechanics.
介绍了时间相关断裂力学有关的裂纹尖端参数,指出用参数Ct,av作为衡量蠕变裂纹扩展的参数是适宜的;讨论了疲劳对蠕变裂纹扩展的影响,指出材料的疲劳屈服极限和抗蠕变能力是决定这种影响大小的主要因素;并给出了蠕变裂纹扩展率的计算公
2)  Crack growth rate
裂纹扩展速率
1.
Low cycle fatigue crack growth rate of compacted graphite cast iron;
蠕墨铸铁的低周疲劳裂纹扩展速率
2.
Crack Growth Rate of Superalloy GH761 Disk for Turbine at 650 ℃ Fatigue and Creep Interaction;
GH761涡轮盘650℃疲劳/蠕变交互作用下的裂纹扩展速率
3.
Effect of Metallurgy Process on Crack Growth Rate in Superalloy GH871 at Elevated Temperature;
冶炼工艺对GH871合金裂纹扩展速率的影响
3)  fatigue crack growth rate
疲劳裂纹扩展率
1.
The fatigue crack growth rate is the core for predicting fatigue life by use of fatigue crack propagation(FCP) theory.
疲劳裂纹扩展率表达式是采用疲劳裂纹扩展理论预报疲劳寿命的核心。
2.
The effect of the parameter reflecting crack closure development on the fatigue crack growth rate is studied in this paper through the nonlinear least sq.
45w t%碳钢的疲劳试验数据,结合上述材料的力学性能参数,通过非线性最小平方拟合方法,研究了表征裂纹闭合水平参数k对疲劳裂纹扩展率的影响。
4)  Crack propagation rate
裂纹扩展速率
1.
The test results of stress life, strainlife and crack propagation rate da/dN provided SN curve, N=4.
1321;当da/dN≥5×10-5mm/周,其裂纹扩展速率为da/dN=2。
2.
The effect of polarization and frequency on the crack propagation behavior including crack propagation rate(CPR) and fracture surface was studied.
5%NaCl活化体系的腐蚀疲劳的裂纹扩展行为,包括对裂纹扩展速率和断口形貌的影响。
3.
The experimental results indicate that the short-crack fracture characteristics (the crack growth threshold, the crack propagation rate and the fatigue life)of structural steel can be improved substantially through an appropriate shot peening treatment.
试验研究结果表明,通过适当的喷丸处理,结构钢的短裂纹断裂性能(裂纹扩展门槛值,裂纹扩展速率和疲劳寿命)可以得到具有较大实际意义的改善。
5)  fatigue crack growth rate
裂纹扩展速率
1.
The fatigue crack growth rates and fatigue thresholds of a Ti-48Al-2Mn-2Nb intermetallics, which was formed by a special spray forming technique so--called" centrifugal spray deposition" (CSD) under a low vaccum condition, were investigated at ambient temperature.
本文着重研究了采用特殊的离心喷射沉积成型方法制备的Ti-48Al-2Mn-2Nb金属间化台物的室温疲劳裂纹扩展速率和疲劳门槛值。
2.
The fatigue crack growth rates of laser shock processed specimens are compared with those without LSP.
7mm厚高温合金薄板制作成紧凑拉伸试件 ,对预制裂纹延长线进行 3次叠加 (光斑直径 6mm)激光冲击处理 ,进行裂纹扩展速率试验并与未处理的试件进行对比 ,由于激光冲击处理产生的强化效应在裂纹扩展路径上存在区域差别 ,所以裂纹扩展速率无法进行公式拟合 ,但在整体上能大大降低裂纹扩展速
3.
As an important designing and indicating target of damage tolerance, the fatigue crack growth rate (FCGR) should be necessarily studied.
裂纹扩展速率作为损伤容限设计一个重要指标,以及表征材料损伤容限性能的重要方面,有必要对其开展较为深入的研究。
6)  creep crack growth rate (CCGR)
蠕变裂纹扩展率
1.
A theroretical equation for the calculation of creep crack growth rate (CCGR) has also been derived.
根据局部损伤理论和相似原理 ,给出了蠕变裂纹启裂前的孕育上下限时间并推导了蠕变裂纹扩展率方程。
补充资料:裂纹失稳扩展
分子式:
CAS号:

性质:材料内部裂纹尖端的应力场强度因子达到或超过材料的断裂韧性之后发生的裂纹快速扩展。裂纹失稳扩展将导致材料迅速断裂。

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