ISO 9538:2017

INTERNATIONAL ISO
STANDARD 9538
Second edition
2017-04
Aerospace series — Hydraulic tubing
joints and fittings — Planar flexure test
Série aérospatiale — Joints et raccords des tuyauteries hydrauliques
— Essai de flexion plane
Reference number
ISO 9538:2017(E)
©
ISO 2017

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ISO 9538:2017(E)

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ii © ISO 2017 – All rights reserved

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ISO 9538:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Device for flexure test . 1
5 Flexure test specimens . 3
6 Stress determination. 3
7 Procedure. 4
7.1 Instrumentation and strain gauges . 4
7.2 Frequency . 5
7.2.1 Test frequency . 5
7.2.2 Natural frequency of the specimens . 5
7.2.3 Determination of tube length. 5
7.3 Bending stress calibration of test specimen . 5
8 Requirements . 5
Bibliography . 6
© ISO 2017 – All rights reserved iii

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ISO 9538:2017(E)

Foreword
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This document was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles,
Subcommittee SC 10, Aerospace fluid systems and components.
This second edition cancels and replaces the first edition (ISO 9538:1996), of which
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