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BS EN 13477-2:2021

BS EN 13477-2:2021

$215.11

Non-destructive testing. Acoustic emission testing. Equipment characterisation – Verification of operating characteristics

Published By Publication Date Number of Pages
BSI 2021 82
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This document specifies test routines for the periodic verification of the performance of acoustic emission (AE) test equipment, i.e. sensors, pre-amplifiers, signal processors, external parametric inputs.

It is intended for use by qualified personnel to implement an automated verification process.

Verification of the measurement characteristics is advised after purchase of equipment, in order to obtain reference data for later verifications. Verification is also advised after repair, modifications, use under extraordinary conditions, or if one suspects a malfunction.

The procedures specified in this document do not exclude other qualified methods, e.g. verification in the frequency domain. These procedures apply in general unless the manufacturer specifies alternative equivalent procedures.

Safety aspects of equipment for use in potentially explosive zones are not considered in this document.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
3 Terms and definitions
10 4 Required test equipment and test signals
4.1 List of required equipment
11 4.2 Test signal waveforms
4.2.1 Continuous sine wave
12 4.2.2 Triangular-modulated sine wave burst signal
14 4.2.3 Sin2-modulated sine wave burst signal
15 4.2.4 Rectangular-modulated sine wave burst signal
16 4.2.5 Rectangular pulse
4.2.6 Repetitive signals
17 4.2.7 DC signal
4.2.8 Summary of test signals
4.3 Test block
4.4 Shielding test plate
5 Sensor verification
5.1 General
18 5.2 Intended purpose
5.3 Preparation of the report form and preliminary examination
19 5.4 Sensitivity verification
5.4.1 General
5.4.2 Test procedure
20 5.5 Verification of the electrical shield crosstalk
5.5.1 General
24 5.5.2 Procedure
5.6 Pre-amplifier verification of sensor-internal pre-amplifier
25 6 Pre-amplifier verification
6.1 Preparation of the report form and preliminary examination
26 6.2 Verification of DC consumption
6.2.1 General
27 6.2.2 Verifying a limit or a deviation
6.2.3 Procedure
28 6.3 Verification of the pre-amplifier characteristics
6.3.1 General
6.3.2 Gain verification
6.3.2.1 General
29 6.3.2.2 Test procedure
30 6.3.3 Bandwidth verification
6.3.3.1 General
31 6.3.3.2 Report preparation
6.3.3.3 Test procedure
32 6.3.4 Electronic noise verification
6.3.4.1 General
33 6.3.4.2 Setup for noise measurement
34 6.3.4.3 Test procedure
6.3.5 Dynamic range verification
6.3.5.1 General
36 6.3.5.2 Procedure
37 6.3.6 Common mode rejection verification
6.3.7 Pulsing test
7 Acoustic emission signal processor verification
7.1 General
7.1.1 Overview
40 7.1.2 Preparation of the report form
41 7.2 Signal processor noise verification
7.2.1 General
42 7.2.2 Test procedure
43 7.3 Verification of RMS measurement and floating threshold functionality
7.3.1 General
45 7.3.2 Test procedure
7.4 Verification of the fixed detection threshold
7.4.1 General
47 7.4.2 Procedure for signal stimulation and data acquisition
7.4.3 Procedure for the data verification
7.5 Bandwidth and filter roll-off verification
7.5.1 General
48 7.5.2 Data needed for verification of bandwidth and roll-off verification
7.5.3 Procedure for signal stimulation and storage
7.5.4 Test procedure for bandwidth verification based on stored AE data
49 7.6 Burst signal parameter verification
7.6.1 General
7.6.2 Maximum amplitude verification
7.6.2.1 Applying the acceptance criteria
50 7.6.2.2 Setpoint for the arbitrary function generator (AFG) amplitude
51 7.6.2.3 Test procedure for signal stimulation and data acquisition
52 7.6.2.4 Maximum amplitude data verification procedure
7.6.3 Duration verification
7.6.3.1 General
53 7.6.3.2 Signal stimulation and measurement procedure for duration verification
7.6.3.3 Test procedure for duration data verification
54 7.6.4 Rise-time verification
7.6.4.1 General
55 7.6.4.2 Test procedure for signal stimulation and measurement for rise-time verification
7.6.4.3 Data analysis procedure for rise-time verification
56 7.6.5 Ring-down count verification
57 7.6.6 Energy and signal strength verification
7.6.6.1 General
7.6.6.2 Maximum amplitude-varied energy and signal strength verification
59 7.6.6.3 Duration-varied energy and signal strength verification
60 8 Verification of the system performance
8.1 External parametric input verification
8.1.1 General
61 8.1.2 Formulae for parametric input verification
62 8.1.3 Avoiding the use of a high-accuracy digital voltmeter (HADVM)
8.1.4 Report form preparation
63 8.1.5 Test procedure for signal stimulation and measurement for parametric input verification
64 8.1.6 Test procedure for parametric input data verification
8.2 Pulser verification
8.3 System acquisition rate verification
65 8.4 Delta t (Δt) measurement verification
8.5 Software verification
66 9 Test report
67 Annex A (informative)Report form for the sensor performance verification
69 Annex B (informative)Report form for the pre-amplifier performance verification
72 Annex C (informative)Report form for the acoustic emission signal processor verification
77 Annex D (informative)Report form for the external parametric input verification
79 Annex E (informative)List of designations

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BS EN 13477-2:2021
$215.11