Post-earthquake evaluation of pipelines rehabilitated with cured in place lining technology using acoustic emission

Farhidzadeh, Alireza; Dehghan-Niri, Ehsan; Zhong, Zilan; Salamone, Salvatore; Aref, Amjad J.; Filiatrault, André

doi:10.1016/j.conbuildmat.2013.12.048

Cited by 10 publications

(4 citation statements)

References 30 publications

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“…In practice, tubular polyester nonwoven composite material used for turnover lining of sewage pipeline has the characteristics of high tensile strength and good chemical stability, which can effectively extend the service life of the old pipe [1,2]. Among them, impervious membrane is an important part of tubular composite material, which is in direct contact with the conveying medium in the pipeline and mainly plays a role in anti-permeability and anti-corrosion [3,4]. At present, polyurethane, polyethylene, polyvinyl chloride and other materials are mainly selected as the impervious membrane for the lining material.…”

Section: Introductionmentioning

confidence: 99%

Hot-pressing design of tubular polyester nonwoven lining material for pipeline rehabilitation

Zhang

Wang

et al. 2021

Journal of Industrial Textiles

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In view of the strength loss and dimension shrinkage of polyester nonwoven used for the sewage pipeline in the hot-pressing process, the response surface methodology was proposed to optimize the technological parameters of lining material. Select the temperature, time and pressure to enhance the hot-pressing process of lining material with the response value of the rate of dimensional change and tensile strength. The results showed that the temperature was 180°C, time was 3s, and pressure was 2.8MPa. Under this process, the rate of dimensional change was 4.23%, transverse tensile strength was 7.95MPa, and longitudinal tensile strength was 5.26MPa. It showed that the response surface methodology had practical application value, and provided a theoretical basis for the hot-pressing parameters of lining material with maximum tensile strength and minimum dimensional shrinkage. The paper also tested the adhesive strength, air permeability and water permeability of lining material under the optimal process, founding that the prepared material had excellent adhesive strength, air permeability, water permeability, and could meet the construction requirements of pipeline rehabilitation and the use requirements of conveying medium.

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Section: Introductionmentioning

confidence: 99%

Hot-pressing design of tubular polyester nonwoven lining material for pipeline rehabilitation

Zhang

Wang

et al. 2021

Journal of Industrial Textiles

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“…They performed an analysis using acoustic signals due to ber breakage and matrix debonding by incorporating a viscoelastic matrix model. Farhidzadeh et al [ 18 ] used the acoustic emission (AE) technique for the investigation of two CIPP damage mechanisms—delamination between pipeline and liner and incipient failure of the liner. The AE features were also studied by Farhidzadeh et al [ 19 ] to detect their appropriateness for CIPP failure detection, to classify fracture from debonding and to highlight liner failure at quasi-static and dynamic loading.…”

Section: Introductionmentioning

confidence: 99%

Effect of Chemical Aggressive Media on the Flexural Properties of Cured-In-Place Pipes Supported by Microstructure Observation and Acoustic Emission

et al. 2020

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The cured-in-place pipe (CIPP) method is currently the most frequently used approach for the renovation of piping without digging; this technology is suitable for pipes made from all types of material. The authors of this paper examined how chemical substances and increased temperature change samples of CIPP with vinyl-ester resin taken from a simulated installation. Changes were observed at several levels: visually via a digital optical microscope, through changes of short-term bending properties and by observation of the activity of the sample structure by means of acoustic emission (AE). Interdependencies among the observed parameters were examined, specifically, the cumulative number of hits (cnt)/deflection and flexural properties/mechanic wave velocity. The test results prove that after three weeks of immersion in a simulated aggressive environment that mirrors what may happen to CIPP in real conditions, short-term mechanical properties change. This is also proven by the results of the AE measurements. For clarity, the results include images from a digital optical microscope. In addition, this paper proves that CIPP samples have good resistance to the action of organic and inorganic acids and to increased temperatures. After three weeks of exposure to a temperature of 100 °C the CIPP flexural properties of the samples had even improved.

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“…Structural health monitoring (SHM) by guided ultrasonic waves (GUWs) is a field that has received significant interest in the past few years. 3–18 The advantages of this technique include (a) the use of transducers that can be permanently attached to the structure of interest to perform real-time monitoring and routine inspection with the same sensing system; (b) the ability to probe a large area of the structure, locating cracks and notches from only a few monitoring points; and (c) the capability to detect both active cracks and pre-existing cracks by toggling between the modes of “passive” acoustic emission testing and “active” UT. Although a variety of GUW-based systems and signal processing techniques have been developed for the damage assessment of complex structures, including pipelines, their ability to estimate circumferential location of a defect, particularly for large-diameter cylinders, is very uncertain, and their resolution in the circumferential direction is poor.…”

Section: Introductionmentioning

confidence: 99%

A multi-helical ultrasonic imaging approach for the structural health monitoring of cylindrical structures

Dehghan-Niri

Salamone

2014

Structural Health Monitoring

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In the past few years, several efforts have been made to combine guided ultrasonic waves and imaging algorithms such as tomography for detecting and locating damage in complex structures. In this article, we introduce a multi-helical ultrasonic imaging approach for the structural health monitoring of cylindrical structures. An array of permanently installed piezoelectric transducers is used to generate and receive high-order helical guided waves around the cylindrical structure to artificially increase the ray density/resolution without increasing the number of sensors. A probabilistic-based imaging algorithm is used to identify metal loss defects. Experimental tests are carried out on a steel pipe instrumented with six piezoelectric transducers to validate the proposed approach. Three thickness recesses simulating corrosion are considered. Results demonstrate the efficacy of the proposed approach by identifying the simulated damage at the correct locations and qualitatively monitoring damage growth. No attempt is made in this study to quantify the extent of thinning.

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Post-earthquake evaluation of pipelines rehabilitated with cured in place lining technology using acoustic emission

Cited by 10 publications

References 30 publications

Hot-pressing design of tubular polyester nonwoven lining material for pipeline rehabilitation

Hot-pressing design of tubular polyester nonwoven lining material for pipeline rehabilitation

Effect of Chemical Aggressive Media on the Flexural Properties of Cured-In-Place Pipes Supported by Microstructure Observation and Acoustic Emission

A multi-helical ultrasonic imaging approach for the structural health monitoring of cylindrical structures

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