But the two key areas in this discussion are what is the maximum detectable flaw size? 但是,在这个讨论中的2个关键领域是,什么是最大的可检测裂纹尺寸?
It was examined that the dynamic peculiarity, the welding line flaw, the size of steel member section and the rusty phenomenon of a steel pedestrian overcrossing. 对某钢结构人行天桥的动力特性、焊缝缺陷、应力和变形、钢构件截面尺寸和锈蚀情况进行了检测,按规范要求验算了结构的整体稳定和局部稳定。
And given that maximum detectable flaw size should you have a PTS event would the reactor vessel fail? Or have a crack provocation such that the likelihood of failure would be much higher. 得到了最大的可检测裂纹尺寸,你们应该要有一个PTS的事件,反应堆,管道会失效吗,或者会有破裂的激发,像是失效的可能性会高得多。
Based on the equivalent initial flaw size method and the coincidence criterion, the initial fatigue quality of two different drilling processes is calculated. 在新方法中,假设结构细节的原始疲劳质量不受形状、工艺参数和装配状态等影响,而只与材料的缺陷如气孔、夹杂等有关。
Equivalent initial Flaw Size; 当量初始缺陷尺寸;
Then, equivalent initial flaw size distribution can be confirmed based on the relations of several groups of TTCI distribution parameters. 然后利用不同参考裂纹尺寸对应的TTCI分布参数之间的关系确定结构细节的当量初始缺陷尺寸分布参数。
Automatic computation, record and alarm for flaw size equivalent; 当量缺陷尺寸的自动计算,自动记录和自动报警;
Size effect on initial flaw size is a reasonable explanation to "size effect on fatigue life". 疲劳结构可能的开裂区域面积不同引起结构可能萌生裂纹的初始缺陷尺寸分布各异是造成疲劳尺寸效应的一个可能解释。
Review and Analysis on detection probability of NDT and flaw size distribution laws 无损检测检出概率和缺陷尺寸分布规律的分析与评述
VQ Model Based on Clustering Validity Analysis: it's the flaw for the codebook training algorithm that the size of codebook is choosed artificially. 基于聚类有效性分析的VQ模型:VQ模型电码本的训练算法有一个弱点:电码本大小是人为指定的。
A new method for expressing the flaw size in safety assessment 安全评定中缺陷尺寸表征的新方法
The assessment points 'locus and failure assessment locus indicate the limit flaw size of the structure. 评定点变化轨迹与失效评定曲线交点所对应的缺陷尺寸即为结构的极限缺陷尺寸。
With a known initial flaw size distribution for small specimen and an area ratio, the unknown flaw size distribution for large specimen can be gotten by using the analytical model only if these two structures have the same material and machining conditions. 模型利用已知的小尺寸试样的初始缺陷尺寸分布和大小试样的开裂面积比,推导出了相同条件下未知大尺寸试样的初始缺陷尺寸分布。
An evaluation approach is presented to the initial fatigue quality of fastener holes, which is characterized by Equivalent Initial Flaw Size Rating ( EIFSR) obtained by back extrapolated fractographic data of constant amplitude loading. 给出了一种由等幅载荷试验的断口金相数据反推得到的当量初始裂纹尺寸额定值(EIFSR)表征的紧固孔原始疲劳质量评定方法。
The application of fuzzy evaluation on quantitative metallography can get objective and exact results, overcome the flaw of troublesome and uncertainty of usual methods in determining grain size, and will be helpful push forward the research and production of materials. 将模糊综合评价应用于定量金相的面积法当中,所得结果客观、准确,克服了通常的晶粒度级别确定方法的麻烦且不可靠的缺陷,有利于推动材料的研究和生产。
The equivalent effects of a physic-al initial flaw on one or multiple structure details are characterized by equivalent initial flaw size ( E1FS) distribution. 用当量初始缺陷尺寸分布表征在一个或多个结构细节中真实初始缺陷的当量影响。
The mathematic model between reliability and remaining life associated to crack growth rate 、 initial flaw size and stress range that were independent random variables each other and obeyed logarithmic normal distribution, was constructed. 建立了裂纹扩展速率、初始裂纹尺寸和应力变化幅值互为独立随机变量,且服从对数正态分布的剩余寿命与可靠度之间数学模型。
A new predicting model for the critical expansion force is deduced in terms of the relationship between fracture toughness and maximal load by relating the initial flaw and crack size based on the fracture mechanics theory of concrete. 应用混凝土断裂理论,通过断裂韧度与最大荷载的关系,建立了考虑混凝土结构初始缺陷和微裂缝影响的新的临界锈胀力预测模型;
Study of Size Effect on Initial Flaw Size Distribution 初始缺陷尺寸分布的尺寸效应研究
Determination of detectable flaw size is the requirement for establishing maintenance plan, and it is an important basis for analyzing the damage tolerance and durability. 确定维修检测中可检裂纹的尺寸是制定维修大纲的需要,同时也是损伤容限耐久性分析所必须的重要依据。
In this paper, we mainly used experiments and finite element method ( FEM) to research the laser ultrasonic flaw detection and provided some methods to investigate the location, size and some other information of the flaw. 本文从实验及有限元方法两方面展开对激光超声缺陷检测的研究,主要提出一些判断缺陷位置、尺寸等信息的方法。
Finally, the improved method of determining TTCI distribution parameters is offered and the new approach to determine the generic parameters of EIFS ( Equivalent Initial Flaw Size) distribution is proposed. 最后,改进TTCI分布参数估计方法,在此基础上,结合约束最小二乘法,提出确定通用当量初始缺陷尺寸分布参数的新方法。
Eddy current displacement sensor can be used to measure displacement, vibration, temperature, flaw detection, size and so on. 电涡流位移传感器不断扩展它的应用领域,可以用来测量位移、振动、转速、厚度、温度、探伤、尺寸等参数。
Research on modern digital signal processing and flaw detection mode of non-destructive weld detection not only improves accuracy of detection, but also makes detection results such as size, location and property of weld flaws quantitatively. 现代数字信号处理和模式识别相结合的技术推进了焊接无损检测技术,不仅提高了检测的准确性,并可得出检测的量化结果,如焊接缺陷的大小、位置及性质。