Acoustic emission analysis of composite pressure vessels under constant and cyclic pressure

Chou, H.Y.; Mouritz, A.P.; Bannister, Michael; Bunsell, Anthony R.

doi:10.1016/j.compositesa.2014.11.027

Cited by 75 publications

(39 citation statements)

References 27 publications

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“…Acoustic emission (AE) technology is an important means in the field of structural health monitoring (SHM), the integrated SHM system developed in UWA and widely used in many fields such as aerospace industry, material engineering, petrochemical industry, and civil engineering . Defects source localization is an important function AE technology .…”

Section: Introductionmentioning

confidence: 99%

A novel acoustic emission monitoring method of cross-section precise localization of defects and wire breaking of parallel wire bundle

Shi

2019

Struct Control Health Monit

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Summary The monitoring and localization of defects and wire breaking of bridge cable are vital to the safe operation of the whole bridge. In this work, an innovative monitoring method that uses waveguides to draw out the steel wires at the end of the cable is proposed. This monitoring method can effectively capture the acoustic emission (AE) signal produced by defects and wire breaking of the cable. The transverse position of the wire breaking can also be accurately located so as to provide basis for the decision making of maintenance department. The pencil‐lead breaks (PLB) test method is utilized to investigate the influence of the transition modes between the waveguide and the sensor and the connection modes between the waveguide and the cone on the AE signal. The PLB test and tensile test method are utilized to examine the AE signal characteristics of different sensors at the end of steel wires. Results showed that the cone transition between the waveguide and the sensor and the welding connection between waveguide and cone exhibit the minimum effect on AE waveform and parameters, such as amplitude, compared with that of the reference sensor without waveguide. In the tensile test, the transverse position of the wire breaking cannot be identified by analyzing the AE signals collected by each senor when the wire breaks, whereas it can be identified in the process of defects before the wire breaks.

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Section: Introductionmentioning

confidence: 99%

A novel acoustic emission monitoring method of cross-section precise localization of defects and wire breaking of parallel wire bundle

Shi

2019

Struct Control Health Monit

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“…A small number of investigations are reported for AE monitoring of glass fibre tubular composites [58][59][60] and composite pressure vessels [61], however the specific AE waveform data has not always been made available.…”

Section: Acoustic Emission Monitoringmentioning

confidence: 99%

Characterisation of Damaged Tubular Composites by Acoustic Emission, Thermal Diffusivity Mapping and TSR-RGB Projection Technique

2016

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An increase in the use of composite materials, owing to improved design and fabrication processes, has led to cost reductions in many industries. Resistance to corrosion, high specific strength, and stiffness are just a few of their many attractive properties. However, damage tolerance remains a major concern in the implementation of composites and uncertainty regarding component lifetimes can lead to over-design and under-use of such materials. A combination of non-destructive evaluation (NDE) and structural health monitoring (SHM) have shown promise in improving confidence by enabling data collection in-situ and in real time. In this work, infrared thermography (IRT) is employed for NDE of tubular composite specimens before and after impact. Four samples are impacted with energies of 5 J, 7.5 J, and 10 J by an un-instrumented falling weight set-up. Acoustic emissions (AE) are monitored using bonded piezoelectric sensors during one of the four impact tests. IRT data is used to generate diffusivity and thermal depth mappings of each sample using the thermographic signal reconstruction (TSR) red green blue (RGB) projection technique. Analysis of AE data alone for a 10 J impact suggest significant damage to the fibres and matrix; this is in good agreement with the generated thermal depth mappings for each sample, which indicate damage through multiple fibre layers. IRT and AE data are correlated and validated by optical micrographs taken along the cross section of damage.

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“…In the knowledge of this assignment the AE signals received on a more complex structure, such as a filament wound composite pressure vessel, can be distinguished and the probable failure mode estimated. 27 Suitable model experiments along with finite element analysis (FEM) of the stress state were also useful to discriminate between failure events and their AE characteristics. 28 In the case of linear location usually two guard sensors are placed outside the place of interest to filter background noise.…”

Section: Failure Mode and Sequencementioning

confidence: 99%

Failure Assessment and Evaluation of Damage Development and Crack Growth in Polymer Composites Via Localization of Acoustic Emission Events: A Review

2017

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This review aims at showing how the location of acoustic emission (AE) in loaded polymer composites can be used to get a deeper insight into the onset and growth of damage, and associated failure events and sequences. Different location methods (experimental and theoretical) are briefly introduced along with AE characteristics in time and frequency domains. Linear (1D), planar (2D), and spatial (3D) locations of AE are examined through selected examples. The cited works demonstrate the versatile use of AE. Apart from damage and failure assessment, AE can be used to reconstruct crack growth, and thereby help determine the accurate fracture mechanical parameters. Unlike the detection of the development of damage, the identification of failure mechanisms by analyzing selected AE signal parameters, including their clustering, requires further research. Unraveling the failure mode is, however, a key topic with respect to structural integrity, residual strength, and lifespan expectation of composite parts. A recent major challenge is to establish a reliable, real-time structural health monitoring system making use of located AE events monitored by built-in sensors.

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Acoustic emission analysis of composite pressure vessels under constant and cyclic pressure

Cited by 75 publications

References 27 publications

A novel acoustic emission monitoring method of cross-section precise localization of defects and wire breaking of parallel wire bundle

A novel acoustic emission monitoring method of cross-section precise localization of defects and wire breaking of parallel wire bundle

Characterisation of Damaged Tubular Composites by Acoustic Emission, Thermal Diffusivity Mapping and TSR-RGB Projection Technique

Failure Assessment and Evaluation of Damage Development and Crack Growth in Polymer Composites Via Localization of Acoustic Emission Events: A Review

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