Critical Discussion on Applicability of Extreme Value Statistics to Localized Corrosion

DOI 1 Citations Open Access

Bibliographic Information

Other Title
  • 極値統計の適用性評価における留意点および局部腐食深さデータの活用
  • Use of Individual Depth Data for Evaluation of the Applicability

Description

The applicability of extreme value statistics to localized corrosion was studied based on a actual case. The localized corrosion under tubercles on inner surface of the steel channel in which river water flowed was investigated. Their depths obeyed the distribution of exponential type, while the maximum depths did the double exponential distribution. When the similar data appeared in the previous papers, extreme value statistics was often assumed to be applicable. However, according to the theory of extreme value statistics, the maximum depths are necessary to be sampled from a single population.<br>Then, it was evaluated by calculating the confidence intervals for the population mean whether the data belong to the same population or not. Moreover, the theoretical distribution of maximum depths was calculated and was compared with the measured one. The results of these analyses showed that extreme value statistics was inapplicable to the present case. Thus, the present case study demonstrates that extreme value statistics is not always applicable to the maximum depths of localized corrosion, even if the depths obey the distribution of exponential type and the maximum depths do the double exponential distribution.

Journal

  • Corrosion Engineering

    Corrosion Engineering 48 (2), 96-103, 1999

    Japan Society of Corrosion Engineering

Citations (1)*help

See more

Keywords

Details 詳細情報について

  • CRID
    1390282681234862208
  • NII Article ID
    130004238632
  • DOI
    10.3323/jcorr1991.48.96
  • ISSN
    18819664
    09170480
    http://id.crossref.org/issn/09170480
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • OpenAIRE
  • Abstract License Flag
    Disallowed

Report a problem

Back to top