ISO 14802:2012 PDF

Name: ISO 14802:2012 — Corrosion of metals and alloys — Guidelines for applying statistics to analysis of corrosion data
SKU: ISO 14802:2012
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Corrosion of metals and alloys — Guidelines for applying statistics to analysis of corrosion data

Название (английский):

ISO 14802:2012

Corrosion of metals and alloys — Guidelines for applying statistics to analysis of corrosion data

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 60
Дата публикации:: 13 июля 2012 г.
Издание:: ISO IS 14802 edition 1 version 1
ICS:: 77.060

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Описание (английский):

ISO 14802:2012 gives guidance on some generally accepted methods of statistical analysis which are useful in the interpretation of corrosion test results. ISO 14802:2012 does not cover detailed calculations and methods, but rather considers a range of approaches which have applications in corrosion testing. Only those statistical methods that have wide acceptance in corrosion testing have been considered in ISO 14802:2012.

Abstract

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Overview

ISO 14802:2012 - Corrosion of metals and alloys: Guidelines for applying statistics to analysis of corrosion data provides guidance on commonly accepted statistical methods useful for interpreting corrosion test results. It is a practical guide rather than a step‑by‑step calculation manual: the standard describes a range of widely accepted statistical approaches used in corrosion testing and highlights how to choose and apply them correctly.

Key topics

Data scatter and distributions: identification of typical distributions encountered in corrosion work (normal, log‑normal, Poisson, extreme‑value, etc.).

Visualization: use of histograms and normal probability plots to assess distribution shape.

Transformations: recommended transforms (e.g., log) to normalize skewed corrosion data and guidance on back‑transforming results.

Central measures and variability: mean, median, variance, standard deviation, coefficient of variation, range, precision and bias.

Statistical tests: guidance on hypothesis testing and commonly used tests in corrosion studies (t‑test, F‑test, correlation coefficient, sign test, outside‑count methods).

Curve fitting and regression: least‑squares linear, polynomial and multiple regression methods for relating variables.

Analysis of variance (ANOVA): comparing effects and factorial designs used in corrosion experiments.

Extreme value statistics: treatment of pitting and perforation risks using extreme‑value methods (Gumbel/Weibull approaches) and related probability paper techniques.

Practical issues: significant digits, propagation of variance, identification of experimental mistakes, and when to use non‑parametric methods.

Annexes: sample calculations and bibliography for further study.

Applications and users

ISO 14802:2012 is intended for professionals who analyze corrosion test data and need statistically sound interpretation, including:

corrosion engineers and materials scientists,

laboratory managers and quality control staff,

failure analysis and reliability engineers,

researchers designing corrosion experiments,

regulatory and standards personnel evaluating test evidence.

Typical uses:

assessing whether observed differences in corrosion rates are statistically significant,

fitting time‑to‑failure or pitting depth data (including stress corrosion cracking analyses),

estimating confidence intervals for corrosion metrics,

applying extreme value statistics to estimate perforation or pit‑depth probabilities,

choosing appropriate transformations or non‑parametric tests when distributions are unknown.

Related guidance

ISO 14802:2012 complements other ISO corrosion test standards and procedural documents produced by ISO/TC 156. It is best used alongside specific corrosion test methods and modern data‑reduction/statistical software to produce reliable, reproducible corrosion‑testing conclusions.

Keywords: ISO 14802:2012, corrosion statistics, corrosion testing, normal probability plot, extreme value statistics, regression, ANOVA, pitting, stress corrosion cracking.

ISO 14802:2012 PDF

Abstract

Похожие стандарты

Overview

Key topics

Applications and users

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