BS EN 17391:2022
$167.15
Non-destructive testing. Acoustic emission testing. In-service acoustic emission monitoring of metallic pressure equipment and structures. General requirements
Published By | Publication Date | Number of Pages |
BSI | 2022 | 42 |
This document specifies general requirements for in-service acoustic emission (AE) monitoring. It relates to detection, location and grading of AE sources with application to metallic pressure equipment and other structures such as bridges, bridge ropes, cranes, storage tanks, pipelines, wind turbine towers, marine applications, offshore structures. The monitoring can be periodic, temporary or continuous, on site or remote-controlled, supervised or automated. The objectives of AE monitoring are to define regions which are acoustically active as a result of damage or defect evolution.
PDF Catalog
PDF Pages | PDF Title |
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2 | undefined |
8 | 1 Scope 2 Normative references 3 Terms and definitions 4 Personnel qualification |
9 | 5 Information prior to testing 5.1 Structural information 5.2 Operating conditions |
10 | 5.3 AE event mechanisms 5.3.1 General 5.3.2 Crack growth |
11 | 5.3.3 Corrosion 5.3.4 Friction, fretting and cavitation erosion 6 Monitoring methodology 6.1 Periodic, temporary or continuous monitoring |
12 | 6.2 On-site or remote-controlled monitoring |
13 | 6.3 Supervised or automated monitoring 7 Monitoring instrumentation 7.1 System requirements 7.2 Sensors and preamplifiers 7.2.1 General requirements |
14 | 7.2.2 Frequency range (band width) |
15 | 7.2.3 Coupling agent 7.2.4 Mounting method 7.2.5 Temperature range, wave guide usage 7.2.6 Use in explosive atmosphere 7.2.7 Immersed sensors 7.2.8 Integral electronics (amplifier, band-pass filter, RMS converter, ASL converter) |
16 | 7.2.9 Grounding 7.2.10 External preamplifiers 7.2.11 Sensor and preamplifier cables 7.3 Portable AE equipment 7.4 Single channel and multi-channel AE equipment 7.5 Measured parameters 7.5.1 Burst signal parameters |
17 | 7.5.2 Continuous signal parameters 7.6 Verification of sensor sensitivity and coupling quality 7.7 External parameters 7.8 AE system |
18 | 7.9 Monitoring in hazardous areas 8 Pre-monitoring measurements 8.1 Wave propagation behaviour 8.1.1 General |
19 | 8.1.2 Liquid or gas containment 8.1.3 Wall thickness 8.1.4 Geometry of the structure 8.1.5 Insulation 8.1.6 Surface preparation 8.2 Background noise measurement 8.2.1 Representative location |
20 | 8.2.2 Process noise 8.2.3 Other disturbance noise 8.2.4 Noise sampling period 8.3 Sensitivity of AE monitoring using linear or planar location |
21 | 9 Monitoring procedure 9.1 Sensor positioning 9.2 External parameters 9.3 Instrumentation verification 9.4 Data acquisition and online filtering |
22 | 10 Data analysis 10.1 General 10.2 Online analysis 10.3 Data processing 10.3.1 General 10.3.2 Background noise analysis |
23 | 10.3.3 Pre-location data analysis 10.3.4 AE event location |
24 | 10.3.5 Cluster analysis 10.3.6 Pattern recognition 11 AE source interpretation and evaluation 11.1 Interpretation of AE results |
25 | 11.2 Source evaluation criteria |
27 | 11.3 Grading of AE sources |
28 | 11.4 Verification of AE sources and follow-up NDT 12 Documentation and reporting |
29 | Annex A (informative)Fatigue crack growth and associated acoustic emission applied to monitoring of marine structures A.1 Acoustic emission power, energy and intensity A.1.1 General A.1.2 Acoustic emission power A.1.3 Acoustic emission energy |
30 | A.1.4 Acoustic emission intensity A.2 AE power and resulting waves from a micro-fracture event (AE source) |
31 | A.3 AE detectability |
32 | A.4 Fatigue crack growth |
34 | A.5 Critical crack depth |
35 | A.6 Crack growth rate and required duration of monitoring |
38 | A.7 AE fatigue monitoring of ship hull structure |