Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"environmental stress cracking"”.
-
Studies of Environmental Stress Cracking of High Density Polyethylene Liner in Alkaline Surfactant Polymer Enhanced Oil Recovery Floods
… polyethylene (HDPE) pipes in EOR process, environmental stress cracking (ESC) poses a threat to the integrity of the pipe in ASP floods. In this research, the ESC behaviour of HDPE pipes was studied in ASP floods under conditions that simulated the EOR reality. Particularly, tensile tests …
-
An assessment of the performance of high density polyethylene copolymers for natural gas distribution pipes
… the major influences being in the long-term hoop stress resistance and the environmental stress cracking resistance. Minor amounts of hexene-1 are more effective than comonomers lower in the homologous series, although there is some sacrifice of density related properties. A synergistic …
-
Effect of intermediate solvents on poly(ether ether ketone)
… microtensile tests, and tensile test in the environmental scanning electron microscope (ESEM)), which were first verified with another semi-crystalline thermoplastic polymer, isotactic polypropylene. PEEK specimens were stressed in the inside of glass cones and immersed in a series of …
-
Solvent induced microcracking in high performance polymeric composites
The first paper, “Dye Penetrant Induced Microcracking in High-Performance Thermoplastic Polyimide Composites”, studied the possibility of spurious microcracking in three high-performance thermoplastic polyimide composite materials due to zinc iodine dye penetrant. The material systems were …
-
The effect of environmental aging/exposure on the durability of high performance polymeric composites
… However, the long-term durability and environmental stability of these materials continue to be under question. Continued application of these composites in aerospace structures is contingent upon the long-term durability of these material systems. Polymeric materials have been known to …