对于全焊接阀体球阀,焊缝及热影响区,需要按照断裂力学理论,考虑其断裂韧性(CTOD) 3、具备失火安全和防静电功能 管线球阀设计需考虑失火安全(firesafe),一旦失火,阀门的外漏和内漏不能超过API607规定的泄漏...
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Well-known single-parameters are stress intensity K, J-integral, and CTOD (crack tip opening displacement), and a well-known dual-parameter formulation is based on the introduction of the T-stress that characterizes the crack ...
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... 本文对该高压天然气管道用 2205 双相不锈钢管材进行了夏比 V 形缺口冲击实验、落锤撕裂实验(DWTT)和裂纹顶级打开位移(CTOD)实验,对该资料的断裂耐性特征进行了研讨。
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...出一套科学合理的焊接参数以及焊接控制的措施,并对试验结果进行了检测,重点考察焊材的低温冲击韧性以及CTOD(裂缝尖端开口位移)性能。结果表明:焊件焊缝的低温冲击性能特别是断裂韧性(CTOD)良好,能够满足海洋工程的实际应用要求。
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CTOD-R 阻力曲线
CTOD test CTOD试验
dynamic CTOD 动态
CTOD eigenvalues CTOD特征值
CTOD fracture toughness CTOD断裂韧性
Saturated initiating CTOD 饱和启裂CTOD
CTOD test under low temperature 低温CTOD试验
Buried flaw was found in FCB weld. CTOD test was performed on the weld sample.
用FCB法对船板钢进行焊接试验,发现在焊缝中存在内埋裂纹。
The CTOD toughness can be used as the basis to amend the conventional impact toughness criterion.
CTOD性能可作为修订常规冲击韧性标准的依据。
The dynamic plastic fracture toughness CTOD and its variation with different. crack propagation speeds.
塑性动态断裂韧性CTOD,及其在不同裂纹扩展速度下变化规律的测试。
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