On the initial flaw sizes of uPVC pipe materials
- Univ. of Newcastle, New South Wales (Australia). Dept. of Mechanical Engineering
It is well known that flaws in unplasticized poly(vinyl chloride) (uPVC) pipes are generated during processing. The flaws include inclusions, gas bubbles, and results from poor fusion between PVC grains and extrusion additives. uPVC pipes are often used for water reticulation, subjected to an alternating pressure superimposed on a mean pressure. uPVC pipe samples have been found to fail in fatigue from a small semicircular flaw on the inside bore of the pipe. In designing uPVC pipes against fatigue failure due to pressure variation, it is essential to determine the initial flaw size. Truss attempted to estimate the lifespan of uPVC pipes and showed that predictions and experimental data are in good agreement.
- OSTI ID:
- 5519206
- Journal Information:
- Journal of Applied Polymer Science; (United States), Vol. 50:12; ISSN 0021-8995
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PVC
DEFECTS
FAILURES
FATIGUE
PIPES
STRESS INTENSITY FACTORS
CHLORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
MECHANICAL PROPERTIES
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC POLYMERS
POLYMERS
POLYVINYLS
360603* - Materials- Properties