Structure and self-reinforcing mechanism of biaxially oriented polyethylene pipes produced by solid phase die drawing
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DOI: 10.1016/j.polymer.2019.121556
Abstract: Abstract Biaxially oriented polyethylene (PE) pipes were prepared through solid phase die drawing technology. Drawing speed presented a prominent effect on the hoop draw ratio (DRhoop) and axial draw ratio (DRaxial) of the pipes. For… read more here.
Keywords: oriented polyethylene; structure; solid phase; die drawing ... See more keywords
Assessing the integrity of in service polyethylene pipes
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DOI: 10.1016/j.polymertesting.2018.03.001
Abstract: Abstract The service life of Polyethylene (PE) pipes is influenced by many factors including type of PE resin used, time in service as well as service location. Assessing the integrity of PE pipes which have… read more here.
Keywords: time; integrity service; service; polyethylene pipes ... See more keywords
Determination of Design Coefficients for New Polyethylene Pipes Used in the Rehabilitation of Old Pipelines
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DOI: 10.1061/(asce)ps.1949-1204.0000394
Abstract: AbstractThe paper deals with an extension of a German advisory leaflet, which deals with static calculations for the rehabilitation of drains and sewers using lining and assembly procedures. Such p... read more here.
Keywords: new polyethylene; coefficients new; rehabilitation; design coefficients ... See more keywords
Mechanical Behavior of Polyethylene Pipes under Strike-Slip Fault Movements
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DOI: 10.3390/polym14050987
Abstract: The present paper addresses the mechanical behaviors and failure mechanisms of buried polyethylene (PE) pipes crossing active strike slip tectonic faults based on numerical simulation of the nonlinear response of the soil-pipeline system. The developed… read more here.
Keywords: strike slip; polyethylene pipes; strain; fault ... See more keywords
Evaluating the Residual Stress and Its Effect on the Quasi-Static Stress in Polyethylene Pipes
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DOI: 10.3390/polym14071458
Abstract: Residual stress is generated during the production process. It can significantly affect the mechanical performance of pressurized polymer pipes. In this paper, six polyethylene (PE) pipes, including three high-density PEs (HDPE) and three medium-density PEs… read more here.
Keywords: quasi static; residual stress; static stress; stress ... See more keywords
Guided Wave Ultrasonic Testing for Crack Detection in Polyethylene Pipes: Laboratory Experiments and Numerical Modeling
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DOI: 10.3390/s23115131
Abstract: The use of guided wave-based Ultrasonic Testing (UT) for monitoring Polyethylene (PE) pipes is mostly restricted to detecting defects in welded zones, despite its diversified success in monitoring metallic pipes. PE’s viscoelastic behavior and semi-crystalline… read more here.
Keywords: crack; ultrasonic testing; guided wave; polyethylene pipes ... See more keywords