ISO 7539-6:2018

недоступно на русском языке

Опубликовано (Версия 4, 2018)

В данный стандарт внесены 1 поправка.

ISO 7539-6:2018

CHF 173

Пересчитать швейцарские франки (CHF) в ваша валюта

Тезис

This document specifies procedures for designing, preparing and using precracked specimens for investigating susceptibility to stress corrosion. It gives recommendations for the design, preparation and use of precracked specimens for investigating susceptibility to stress corrosion. Recommendations concerning notched specimens are given in Annex A.

The term "metal" as used in this document includes alloys.

Because of the need to confine plasticity at the crack tip, precracked specimens are not suitable for the evaluation of thin products, such as sheet or wire, and are generally used for thicker products including plate bar and forgings. They can also be used for parts joined by welding.

Precracked specimens can be loaded with equipment for application of a constant load or can incorporate a device to produce a constant displacement at the loading points. Tests conducted under increasing displacement or increasing load are dealt with in ISO 7539-9.

A particular advantage of precracked specimens is that they allow data to be acquired, from which critical defect sizes, above which stress corrosion cracking can occur, can be estimated for components of known geometry subjected to known stresses. They also enable rates of stress corrosion crack propagation to be determined. The latter data can be taken into account when monitoring parts containing defects during service.

Общая информация

Текущий статус
: Опубликовано

Дата публикации
: 2018-08

Исправленный вариант (английский)
: 2018-11

Исправленный вариант (Французский)
: 2018-11

Этап
: Рассылка краткого отчета о пересмотре [90.60]
Версия
: 4
Технический комитет :
ISO/TC 156

ICS :
77.060
RSS обновления

Изменения

Поправки принимаются, когда обнаруживается, что в существующий документ по стандартизации необходимо добавить новый материал. В них также могут быть включены редакционные или технические исправления, которые необходимо внести в существующий документ.