NoDig Poster_Hang

NASTT’s 2016 No-Dig Show Kathy Wyatt, Technology Business development Center Deborah F. Inman College of Business Methodology, Results, and Discussion Introduction and background ACKNOWLEDGEMENTS Shaurav Alam, Ph.D. TRENCHLESS TECHNOLOGY CENTER LOUISIANA TECH UNIVERSITY Leakage in pipeline leads to unnecessary waste of resources and environment contamination. More than 25% of supplied water is being lost due to the leakage with the aged pressurized pipe networks and most of which occurs in the tap connection area. Resin impregnated liner has been widely used for rehabilitation of pressurized pipelines. However, the tap connection may have annular voids although the cured liner product meets the set criteria. . Methodology, Results, and Discussion [1] Jin, Y., Yumei, W., Ping, L. and Xingke, W. (2013). Study on an improved acoustic leak detection method for water distribution systems. Urban Water Journal, vol. 10, p.71–84. [2] Almeida, F., Michael, B., Phillip, J., Whitfield, S., Simon, D. and Amarildo, P. (2014). On the Acoustic Filtering of the Pipe and Sensor in a Buried Plastic Water Pipe and its Effect on Leak Detection: An Experimental Investigation. Sensors, vol. 14, p. 5595- 5610. Reference Objectives Sensing the Voids at Tap Connection Hang Zhang, MSc Student Resin Deprived Region Tap Connection Area Possible Water Trail Location Resin Deprived Region Annular Space filled with resin Void Evaluation of voids by NDT Acoustic Technology. Ultrasonic image simulation of the annulus space at the locations of lateral connections – with void and without void. Development of an insitu method to repair any possible voids. Numerical Model of a half Tap Connection with annulus void was developed. Circular aluminum piece was simulated along the periphery of the tap connection from the inside of the pipe. 100 lbf Impact load (hit to propagate sound) was applied on the surface of the aluminum ring. Fill the void with resin using an insitu filling technology. Void Filled with resin Aluminum Block Clear difference in the amplitude is observed. Void Filled with resin Aluminum Block Void Filled with resin

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Transcript of NoDig Poster_Hang

NASTT’s 2016 No-Dig Show

Kathy Wyatt, Technology Business development Center

Deborah F. InmanCollege of Business

Methodology, Results, and Discussion Introduction and background

ACKNOWLEDGEMENTSShaurav Alam, Ph.D.

TRENCHLESS TECHNOLOGY CENTER LOUISIANA TECH UNIVERSITY

Leakage in pipeline leads to unnecessary waste of resources and environment contamination.

More than 25% of supplied water is being lost due to the leakage with the aged pressurized pipe networks and most of which occurs in the tap connection area.

Resin impregnated liner has been widely used for rehabilitation of pressurized pipelines. However, the tap connection may have annular voids although the cured liner product meets the set criteria.

Methodology, Results, and Discussion

[1] Jin, Y., Yumei, W., Ping, L. and Xingke, W. (2013). Study on an improved acoustic leak detection method for water distribution systems. Urban Water Journal, vol. 10, p.71–84.

[2] Almeida, F., Michael, B., Phillip, J., Whitfield, S., Simon, D. and Amarildo, P. (2014). On the Acoustic Filtering of the Pipe and Sensor in a Buried Plastic Water Pipe and its Effect on Leak Detection: An Experimental Investigation. Sensors, vol. 14, p. 5595-5610.

Reference

Objectives

Sensing the Voids at Tap ConnectionHang Zhang, MSc Student

Resin Deprived Region

Tap Connection Area

Possible Water Trail Location

Resin Deprived Region

Annular Space filled

with resin

Void

Evaluation of voids by NDT Acoustic Technology.

Ultrasonic image simulation of the annulus space at the locations of lateral connections – with void and without void.