ISO/TR 10771-2:2008 PDF

Name: ISO/TR 10771-2:2008 — Hydraulic fluid power — Fatigue pressure testing of metal pressure-containing envelopes — Part 2: Rating methods
SKU: ISO/TR 10771-2:2008
Price: 25 EUR
Availability: InStock

Hydraulic fluid power — Fatigue pressure testing of metal pressure-containing envelopes — Part 2: Rating methods

Название (английский):

ISO/TR 10771-2:2008

Hydraulic fluid power — Fatigue pressure testing of metal pressure-containing envelopes — Part 2: Rating methods

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 40
Дата публикации:: 24 ноября 2008 г.
Издание:: ISO TR 10771 edition 1 version 1
ICS:: 23.100.99

Тип поставки:

Full version600 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:7 раб. дн. (перевод)

Цена:600 €

Описание (английский):

ISO/TR 10771-2:2008 specifies a test method for fatigue rating of the pressure-containing envelopes of components used in hydraulic fluid power systems, as tested under steady internal cyclic pressure loads in accordance with ISO 10771-1.

Abstract

Overview

Key topics and requirements

Scope and applicability
- Applies to metal pressure-containing envelopes where fatigue is the dominant failure mode.
- Excludes piping (see ISO 4413), operating regimes causing creep or low-temperature embrittlement, and strength loss from corrosion or chemical action.
Core definitions
- Rated fatigue pressure (PRF) - maximum pressure verified for a rated cycle life.
- Assurance level - probability that a randomly selected specimen’s fatigue strength exceeds PRF (nominally 90%).
- Verification level - probability that fatigue strength is not less than the cyclic test pressure (nominally 90%).
- Coefficient of variation (ko) - material fatigue scatter (std. dev. / mean).
- Variability factor (KV) - ratio of cyclic test pressure to rated fatigue pressure.
Determining cyclic test pressure
- Select material ko (from tests or Annex A material database).
- Choose assurance and verification levels, and specimen counts.
- Determine variability factor KV (see Table 1 and Annex B).
- Calculate cyclic test pressure: PCT = KV × PRF.
Conduct and acceptance
- Perform fatigue tests per ISO 10771-1 for the chosen cycle count (1×10^6 to 1×10^8 cycles).
- Test is successful if selected element specimens do not fail (see Clause 6.3).
Supporting material
- Annex A: material factor database (ko values).
- Annex B: calculation of KV.
- Annex C: proposal for acceleration factors.
- Annex D: statistical basis and worked examples.

Applications and users

Who benefits
- Hydraulic component manufacturers (cylinders, valves, pump housings), test laboratories, design engineers, certification bodies and maintenance engineers.
Practical uses
- Verifying fatigue ratings for product datasheets and safety assessments.
- Establishing test programs to demonstrate lifecycle performance under cyclic internal pressure.
- Extending verified ratings to similar component variants when geometry and strength are not reduced.

Related standards

ISO 10771-1:2002 - Test method (mandatory reference)
ISO 4413 - Fluid power - General rules for piping (exclusion scope)
ISO 5598 - Fluid power vocabulary

Keywords: ISO/TR 10771-2:2008, fatigue pressure testing, hydraulic fluid power, pressure-containing envelope, fatigue rating, cyclic test pressure, variability factor, assurance level, verification level.

Технические детали

Технический комитет: ISO/TC 131/SC 8 - Product testing
SKU: ISO/TR 10771-2:2008

Главная

Каталог

ISO 10771-1:2002

Отменён

Hydraulic fluid power — Fatigue pressure testing of metal pressure-containing envelopes — Part 1: Test method

14 · PDF

60 €

SIST ISO 10771-1:2016

Действующий

Hydraulic fluid power - Fatigue pressure testing of metal pressure-containing envelopes - Part 1: Test method

Overview SIST ISO 10771-1:2016 - Hydraulic fluid power - Fatigue pressure testing of metal pressure-containing envelopes - Part 1: Test method - specifies a general, repeatable fatigue pressure test…

19 · PDF

66 €