A Methodology for Assessing Fatigue Crack Growth Reliability of Railroad Tank Cars / W. Zhao, MA. Sutton, J. Pen¿̐ư.
- Conference Author
- Probabilistic Aspects of Life Prediction (2002 : Miami, FL)
- Physical Description
- 1 online resource (15 pages) : illustrations, figures, tables
- Additional Creators
- Zhao, W., Pen¿̐ư, J., Sutton, MA., American Society for Testing and Materials, and ASTM International
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License restrictions may limit access. - Summary
- A methodology for assessing structural reliability of railroad tank cars undergoing fatigue crack growth is being developed. A three-degree-of freedom (3-dof) surface crack is employed to account for an asymmetric stress field existing at a fatigue critical location in tank car structures. A fatigue life prediction program using the Walker equation to account for stress ratio effects is developed for the 3-dof surface crack model. A component reliability problem is formulated as a limit state function and solved using a first-order reliability method along with importance sampling method within the commercial reliability software, STRUREL. The methodology is demonstrated using illustrative railroad tank car examples. The results show that: (a) failure probability, Pf, increases as tank car mileage increases; (b) welding residual stresses in the tank structure can significantly increase Pf ; (c) uncertainty in the stress amplitude also has a significant effect on Pf; and (d) the correlation between initial crack depth and initial crack aspect ratio is an important parameter.
- Dates of Publication and/or Sequential Designation
- Volume 2004, Issue 1450 (January 2004)
- Subject(s)
- Other Subject(s)
- ISBN
- 9780803154964 (e-ISBN)
9780803134782
0803134789 - Digital File Characteristics
- text file PDF
- Bibliography Note
- Includes bibliographical references 27.
- Other Forms
- Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
Full text article also available for purchase.
Also available in PDF edition. - Reproduction Note
- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 2004. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
- Technical Details
- Mode of access: World Wide Web.
- Source of Acquisition
- ASTM International PDF Purchase price USD25.
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