Non-destructive testing — Acoustic emission testing — Measurement method for acoustic emission signals in concrete

This document establishes a measurement method for acoustic emission signals in concrete.

Essais non destructifs — Contrôle par émission acoustique — Méthode de mesure pour les signaux d'émission acoustique dans le béton

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Status
Published
Publication Date
23-Jan-2019
Current Stage
6060 - International Standard published
Start Date
24-Jan-2019
Completion Date
24-Jan-2019
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ISO 16836:2019 - Non-destructive testing -- Acoustic emission testing -- Measurement method for acoustic emission signals in concrete
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INTERNATIONAL ISO
STANDARD 16836
First edition
2019-01
Non-destructive testing — Acoustic
emission testing — Measurement
method for acoustic emission signals
in concrete
Essais non destructifs — Contrôle par émission acoustique — Méthode
de mesure pour les signaux d'émission acoustique dans le béton
Reference number
ISO 16836:2019(E)
ISO 2019
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ISO 16836:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

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below or ISO’s member body in the country of the requester.
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Published in Switzerland
ii © ISO 2019 – All rights reserved
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ISO 16836:2019(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Detection of AE waves...................................................................................................................................................................................... 2

5 Measuring system ................................................................................................................................................................................................ 3

5.1 General ........................................................................................................................................................................................................... 3

5.2 Sensor ............................................................................................................................................................................................................. 3

5.3 Amplifier ....................................................................................................................................................................................................... 4

5.4 Filter ................................................................................................................................................................................................................. 4

6 Signal analysis and AE parameters .................................................................................................................................................... 4

7 Setup and measurement ............................................................................................................................................................................... 6

7.1 Sensor setup .............................................................................................................................................................................................. 6

7.2 Environmental noises ....................................................................................................................................................................... 6

7.3 Measurement ............................................................................................................................................................................................ 7

7.4 System inspection ................................................................................................................................................................................. 7

7.5 Storage of data ......................................................................................................................................................................................... 7

8 Test report ................................................................................................................................................................................................................... 7

Annex A (informative) Recommended types of sensors to be used in concrete......................................................8

Bibliography ................................................................................................................................................................................................................................ 9

© ISO 2019 – All rights reserved iii
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ISO 16836:2019(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso

.org/iso/foreword .html.

This document was prepared by Technical Committee ISO/TC 135, Non-destructive testing,

Subcommittee SC 9, Acoustic emission testing.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2019 – All rights reserved
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ISO 16836:2019(E)
Introduction

Acoustic emission (AE) techniques have been investigated in concrete engineering for more than a half

century. Nowadays, results of AE research are put to practical use for infrastructures, not only concrete

structures, but also masonry structures.

Concrete structures can deteriorate due to heavy traffic loads, fatigue, chemical reactions and

unpredictable disasters, although concrete structures have long been referred to as maintenance-

free. Eventually, retrofit and rehabilitation of the structures are in heavy demand all over the world. It

results in the need for the development of advanced and effective inspection techniques prior to repair

work. In this regard, AE techniques have been extensively studied in concrete engineering.

Focusing on crack detection and damage evaluation, it is known that AE techniques are prospectively

applicable to concrete and concrete structures. Therefore, basic aspects on the measurement method

for AE signals in concrete are prescribed. AE is an inspection technique, by which elastic waves due

to cracking and damage in concrete are detected. Since AE phenomena are to be observed under in-

service conditions, AE measurement can be conducted not only in a laboratory, but also on site.

© ISO 2019 – All rights reserved v
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INTERNATIONAL STANDARD ISO 16836:2019(E)
Non-destructive testing — Acoustic emission testing —
Measurement method for acoustic emission signals in
concrete
1 Scope

This document establishes a measurement method for acoustic emission signals in concrete.

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.

ISO 12713, Non-destructive testing — Acoustic emission inspection — Primary calibration of transducers

ISO 12714, Non-destructive testing — Acoustic emission inspection — Secondary calibration of acoustic

emission sensors
ISO 12716, Non-destructive testing — Acoustic emission inspection — Vocabulary

ISO/TR 13115, Non-destructive testing — Methods for absolute calibration of acoustic emission transducers

by the reciprocity technique
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 12716 and the following apply.

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

— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
acoustic emission
transient elastic waves generated by the release of energy within a material
3.2
AE signal

electrical signal detected at a sensor, which is converted through the detection of AE wave (3.3)

(elastic wave)
3.3
AE wave

wave that can be detected in the form of hits (3.5) on one or more channels (3.4)

3.4
channel

one line of AE signal (3.2) detected by AE (3.1) sensor and processed by the other devices

© ISO 2019 – All rights reserved 1
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ISO 16836:2019(E)
3.5
hit
given AE (3.1) channel (3.4) that has detected and processed one AE tr
...

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