Defect tolerant fatigue designs for automotive components fabricated from high strength low alloy structural steel

✍ Scribed by Subrato Dhar

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 458 KB
• Volume: 32
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(89)90016-7

✦ Synopsis

Defect tolerant fatigue design for automotive components fabricated from HSLA steel is considered to understand how to overcome the overestimated design based on conventional S/N approach. The stress concentration arising from material inhomogeneities, micro discontinuities and geometric discontinuities are considered. Notch sensitivity and formation of non-propagation cracks are related to crack closure. The overall crack closure effect under tension loading facilitated the development of non-propagating cracks and have increased the endurance limit by approximately 8%.