ASTM Int'l Publishes Fastener Structural Integrity Standard - ASTM STP 1487
June 30, 2007 // Published as a news service by IHS
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ASTM International released ASTM STP 1487 - Structural Integrity of Fasteners Including the Effects of Environmental and Stress Corrosion Cracking: 3rd Volume.
ASTM STP 1487 contains 11 peer-reviewed papers that provide information on the structural integrity of fasteners including the effects of environmental and stress corrosion cracking.
The four sections cover:
- Fatigue and Crack Growth Experimental Techniques - Three papers cover the development of a fastener structural element test for certifying navy fasteners material; experimental crack growth behavior for aerospace application; and influence of cold rolling threads before and after heat treatment on the fatigue resistance of high strength coarse thread bolts for multiple preload conditions.
- Design/Environmental Effects - Two papers examine the relationship between the tightening speed with friction and clamped-load; and the optimum thread rolling process that improves stress corrosion cracking (SCC) resistance to improve quality of design.
- Fatigue and Crack Growth Analytical Techniques - Three papers describe current analytical techniques for fatigue and crack growth evaluations of fasteners; a numerical crack growth model using the finite element analysis generated stress field; and the resistance of high strength, fine thread bolts for multiple preload conditions.
- Design Consideration - Focuses on the comprehensive, nonlinear three-dimensional (3-D) finite element model to simulate a displacement controlled for riveted structure; state-of-the-art fatigue crack growth analysis techniques that are used in various industries to damage tolerance evaluation of structures; the material stress state within the thread of the bolt; and on each parameter affecting the structural integrity of a bolted joint.
Source: ASTM International.