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ISO 7257

Aircraft - Hydraulic tubing joints and fittings - Rotary flexure test

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Organization: ISO
Publication Date: 1 June 2016
Status: active
Page Count: 20
ICS Code (Aerospace fluid systems and components): 49.080
scope:

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.

Document History

ISO 7257
June 1, 2016
Aircraft - Hydraulic tubing joints and fittings - Rotary flexure test
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...
January 1, 1983
Aircraft - Hydraulic Tubing Joints and Fittings - Rotary Flexure Test
A description is not available for this item.

References

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