Non-Destructive In-Situ Condition Assessment of ...

URL: http://www.sciencedirect.com/science/article/pii/S1877705815025369/pdf?md5=3c4a16bd1dc7bb7d00a828933e5750eb&pid=1-s2.0-S1877705815025369-main.pdf

Pipelines in potable water distribution system are a vital part of modern infrastructure, providing one of the most important services for society. This vital, complex infrastructure is endemic to our urban environments but is ageing, with current average age of around 70 years and with current replacement rates an inferred serviceable asset life of hundreds of years. Hence it is important that we develop technology that will enable pipeline condition assessment without service interruption. Due to environmental and operational stresses acting upon these pipelines, the common structural health problems include stress corrosion, thermal degradation, cracks or even leaks [1]. In particular, it has been suggested that void formation external to buried pipe wall is a crucial factor in pipe breakages due to lack of structural support [1,2]. This paper presents the development and laboratory testing of ultrasonic non-destructive inspection technology for the condition assessment of plastic pipes, provide a measure of the structural integrity of the pipe, as well as ‘looking’ through the pipe wall to assess void formation and critical loss of support. Ultrasonic detection results are presented for grooves and cracks with two common plastic pipe materials, HDPE (High-density polyethylene) and PVC (Polyvinyl chloride) in order to simulate material loss in pipe wall. In addition, four voids in the ground external to plastics with varying shapes and dimensions were detected. Tested soils include two particle sized sands and two particle sized gravels. The study demonstrates the feasibility of developing a new technique for condition and health assessing for buried water plastic pipes

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Additional Information

Field Value
Last updated June 16, 2016
Created June 16, 2016
Format PDF
License Creative Commons Attribution
created over 4 years ago
format PDF
id 9883087c-57a3-4480-8aa2-5d35920cafdb
openAccess false
package id b0b32b0f-aa1a-43fe-9de8-0d6fcc872fb8
position 41
revision id f0a5a351-7af0-466a-aa97-47988e9757d6
state active
tags Plastic pipe,Non-destructive testing,Voids detection,Health monitoring,Plastic pipe,Non-destructive testing,Voids detection,Health monitoring
topic Water supply and distribution
type Conference Paper
year 2,015