ISO/TR 13086-5:2022 ガスボンベ—複合ボンベの設計に関する情報— Part 5: 複合ボンベの衝撃試験 | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 3, Cylinder design.

A list of all parts in the ISO/TR 13086 series can be found on the ISO website.

Introduction

This document considers how impact testing is carried out, why it is done in particular ways and the relevance of various aspects (e.g. a cylinder drop, a flying element through the air, from what direction, size, shape, weight, impact velocity, etc.; does the cylinder “fail” safe or blow into fragments with associated pressure wave?).

This document only addresses cylinders, as a definition of all the associated equipment and its interaction with the cylinders is difficult to assess. The designer can conduct some system level impact tests, including drop, to assess valves, pressure release devices and other attached components.

It is recognized that there are differences between cylinders/tubes that are for general use (without any requirements related to packaging and protection in service) and cylinders/tubes permanently mounted in frames (which offer some differences in loading and protection). Impact testing of an assembly can be different from testing a single, freestanding cylinder/tube.

This document addresses transportable cylinders, vehicle fuel containers and cylinders permanently mounted in frames. It applies to all sizes of cylinders, and to carbon, aramid and glass fibre reinforcements.

Drop testing of smaller cylinders is a requirement in some regulations, codes and standards. For serial production of automotive cylinders, an adequate returnable packing material/method to protect the cylinder during production and until mounted in the vehicle can be used. However, the drop of a cylinder demonstrates a general resistance to impact, which improves safety.

In addition to providing an understanding of the background, an overview is provided of some standard approaches to conducting tests.

1 Scope

This document provides information for the design of composite cylinders related to impact testing and service experience with impact, including:

• low energy impact, which can result from events that can occur during handling or working around cylinders;
• high energy impact, which can result from accidents during transportation, or impact by large objects with velocity;
• drop impact, which can result from handling, where cylinders are dropped or tipped over; and
• high velocity impact, which can result from high energy impact by a small object, such as gunfire, and demonstrates non-shatterability of the cylinder or tube.

Where appropriate, field experience relevant to testing requirements is provided.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 10286 apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

Bibliography