Corrosion monitoring of the RC structures in time domain: Part II. Recognition algorithm based on fractional derivative theory

Corrosion monitoring of the RC structures in time domain: Part II. Recognition algorithm based on fractional derivative theory
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RC 结构的时域腐蚀监测:第二部分。

DOI:
10.1016/j.measurement.2014.12.048
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发表时间:
2015-05
期刊:
影响因子:
5.6
通讯作者:
Guan Xinchun
Guan Xinchun
中科院分区:
工程技术2区
文献类型:
--
作者:
Qiao Guofu;Hong Yi;Ou Jinping;Guan Xinchun

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摘要为了识别钢筋混凝土结构的腐蚀状态,采用分数阶导数(FD)理论建立了钢筋混凝土结构腐蚀状态的综合识别算法。在时域上可以直接得到电化学腐蚀的特性,包括扩散和扩散效应。在复函数逼近算法的基础上,数值验证了FD算法的有效性和准确性。通过白噪声干扰实验验证了FD算法的鲁棒性。结果表明,基于FD的钢筋混凝土结构腐蚀状态识别算法能够在时域内成功识别钢筋混凝土结构的腐蚀状态。
AbstractsTo identify the corrosion status of reinforced concrete (RC) structures, the fractional derivative (FD) theory is used to establish the integrated recognition algorithm. The electrochemical corrosion characteristics including dispersion and diffusion effects can be directly obtained in time domain. The effectiveness and accuracy of FD algorithm are verified numerically based on the results of complex-function-approximation algorithm. Furthermore, the robustness of FD algorithm is tested by the interference experiments of the white noise. The results indicate that the recognition algorithm established based on FD can successfully identify the corrosion status of RC structures in time domain.
钢筋混凝土结构腐蚀监测传感器的有限元优化设计
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