CrSNDT Journal, Vol. 2 No. 3, 2012.
Review article
Acoustic Emission Method for Diagnostics and Structural Health Monitoring of Critical Structures During Operation
Boris Muravin
Abstract
Acoustic Emission (AE) Structural Health Monitoring (SHM) is an emerging field of modern engineering that deals with diagnosis and monitoring of structures during their operation. Increasing requirements for safety, development of tools and criteria for condition based maintenance (CBM), cost reduction are all driving development of AE SHM methods in different industries. The primary goal of AE SHM is detection, identification, assessment and monitoring of flaws or faults/conditions that affect or may affect in a future safety or performance of structures. AE SHM combines elements of AE testing, AE condition/process monitoring, statistical pattern recognition and physical modelling. In this work, the concept, definitions and principles of AE SHM are presented including fundamental assumptions regarding development of new AE SHM procedures, selection of equipment and methods of data acquisition and analysis, diagnosis, monitoring and prediction by AE SHM. Several important industrial examples are provided to demonstrate unique capabilities of AE SHM and their contribution to safety of critical structures. Particularly it is shown application of AE SHM for detection, assessment and long-term monitoring of flaws during normal operation of different industrial systems. It is also demonstrated how AE SHM is useful for identification of risk factors and causes of flaw origination and development thereby providing valuable information for predictive maintenance.
Keywords
Hrčak ID:
148803
URI
Publication date:
3.12.2012.
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