BS ISO 7257:2016
Current
The latest, up-to-date edition.
Aircraft. Hydraulic tubing joints and fittings. Rotary flexure test
Hardcopy , PDF
English
06-30-2016
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Foreword
Introduction
1 Scope
2 Requirements
3 Procedure
4 Formula
5 Equipment
Bibliography
Defines a flexure test procedure to determine and classify the fatigue strengths of reconnectable or permanent hydraulic tube joints.
| Committee |
ACE/69
|
| DevelopmentNote |
Supersedes BS M55(1984) & 14/30264731 DC. (06/2016)
|
| DocumentType |
Standard
|
| Pages |
24
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard specifies a flexure test procedure to determine and classify the fatigue strengths of reconnectable or permanent hydraulic tube joints. The procedure is intended for conducting flexure tests of fittings and joints with high-strength hydraulic tubes of various alloys such as corrosion resistant steel, Nimonic™ 1) , titanium and aluminium alloy hydraulic tube for use on commercial and military aircraft. A mean stress is applied by holding system pressure in the specimens and then flexing in a rotary bending test machine.
| Standards | Relationship |
| ISO 7257:2016 | Identical |
| ISO 2964:1985 | Aerospace — Tubing — Outside diameters and thicknesses — Metric dimensions |
| ISO 8575:2016 | Aerospace — Fluid systems — Hydraulic system tubing |
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