Methodology for Durability Analysis of HDPE Pipe

Autor:	Kalyan Sehanobish, Alexander Chudnovsky, S. Wu
Rok vydání:	1999
Předmět:	Materials science Creep Mechanics of Materials Mechanical Engineering High-density polyethylene Composite material Safety Risk Reliability and Quality Durability
Zdroj:	Journal of Pressure Vessel Technology. 122:152-155
ISSN:	1528-8978 0094-9930
Popis:	Toughness evaluation and durability analysis are two of the critical steps to design a toughened HDPE resin for durability in pipe applications. Durability analysis involves defect characterization, crack initiation and propagation mechanism, and long-term performance prediction. The methodology for durability analysis of high-density polyethylene (HDPE) pipe will be discussed in this paper. Various analytical techniques, such as fractography, hot-stage microscopy, energy-dispersive X-ray (EDX), microtransmittance infrared spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM), have been used to characterize the defect properties and size distribution. Crack initiation and propagation mechanisms in HDPE have been analyzed by some accelerated tests and compared with that observed in the long-term hydrostatic pressure test. A new procedure for lifetime prediction of HDPE under creep is discussed based on the crack layer theory (Chudnovsky, A., 1984, NASA Contractor Report 174634). [S0094-9930(00)00802-7]
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2a72a089191055cf89d64e9b67286fbf https://doi.org/10.1115/1.556165 Zobrazit plný text záznamu