ISO 16836:2019 非破壊検査—アコースティックエミッション試験—コンクリートのアコースティックエミッション信号の測定方法 | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 135, Non-destructive testing, Subcommittee SC 9, Acoustic emission testing.

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.

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.

3 Terms and definitions

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

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Bibliography