Investigation of the influence of flow rate on bubble formation and collapse in ball valves at various opening percentages using an AE technique
Ball valves are popularly used in many different industrial processes and hydraulic systems because of their light weight and simple structure. However, they are susceptible to cavitation phenomena and the growth and collapse of the bubbles formed lead to erosion and pitting of the
metal surfaces. This paper presents the monitoring and detection of bubble formation at an early stage in a ball valve using acoustic emission (AE). It is shown that AE will detect incipient cavitation and that there is a clear correlation between AE signal level and the flow rate through
the ball valve at a constant opening percentage.
Keywords: ACOUSTIC EMISSION; BALL VALVE; BUBBLE FORMATION; CAVITATION; MONITORING
Document Type: Research Article
Publication date: 01 June 2018
- Official Journal of The British Institute of Non-Destructive Testing - includes original research and development papers, technical and scientific reviews and case studies in the fields of NDT and CM.
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