Statistical modeling of crack growth and reliability assessment of high-density polyethylene
Journal Article
·
· Journal of Materials Engineering and Performance
- Lubrizol Corp., Wickliffe, OH (United States)
- King Fahd Univ. of Petroleum and Minerals, Dhahran (Saudi Arabia). Mechanical Engineering Dept.
In this work, a statistical evaluation of the crack-growth process in high-density polyethylene (HDPE) was carried out. The specimens were compression molded from virgin, molding-grade HDPE. Edge-notched specimens for replicate fatigue testing were prepared from compression-molded sheets. Fatigue test results were then analyzed, and it is shown that if the crack-growth process can be characterized as a random process following a power-law-type behavior, then the time to reach a critical crack length will be distributed according to an inverted lognormal model.
- OSTI ID:
- 364021
- Journal Information:
- Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 3 Vol. 8; ISSN 1059-9495; ISSN JMEPEG
- Country of Publication:
- United States
- Language:
- English
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