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Measuring the atmospheric corrosion of Q235B and T91 steels using gray value, wavelet analysis and fuzzy Kolmogorov-Sinai entropy

机译:测量Q235B和T91钢的大气腐蚀使用灰色值,小波分析和模糊Kolmogorov-Sinai Entropy

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Purpose This paper aims to quantify atmospheric corrosion by image analyses. The corrosion extent, form and distribution of corrosion product on Q235B and T91 steels exposed to a Zhoushan marine atmosphere over one year are characterized by image analysis. Design/methodology/approach Image analysis of corrosion images were achieved using the gray value, wavelet analysis and fuzzy Kolmogorov-Sinai (K-S) entropy. Findings As corrosion becomes extensive, the gray value of corrosion images decreases, and the energy value of nine subimages after wavelength decomposition decreases. Fuzzy K-S entropy increases as localized corrosion propagates but decreases as uniform corrosion spreads. Originality/value The methods proposed in this work open a new way for fast corrosion evaluation of metallic materials exposed to atmospheric conditions.
机译:目的本文旨在通过图像分析量化大气腐蚀。 通过图像分析,Q235B Q235B和T91钢对舟山海洋气氛暴露于舟山海洋气氛的腐蚀程度,形式和分布的特征在于图像分析。 使用灰度值,小波分析和模糊Kolmogorov-Sinai(K-S)熵实现了腐蚀图像的设计/方法/接近图像分析。 结果作为腐蚀变得广泛,腐蚀图像的灰度值降低,波长分解后九个子差的能量值降低。 由于局部腐蚀传播但随着均匀的腐蚀扩散而降低,模糊K-S熵增加。 原创性/价值本工作中提出的方法开辟了一种新的方式,可以进行暴露于大气条件暴露的金属材料的快速腐蚀评估。

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