ASTM Publishes Papers on Structural Integrity of Fasteners
ASTM Publishes Papers on Structural Integrity of Fasteners
John Wolz
ASTM International published the 150-page STP 1487, Structural Integrity of Fasteners Including the Effects of Environmental and Stress Corrosion Cracking, which contains 11 peer-reviewed papers that provide the latest information on the structural integrity of fasteners, including the effects of environmental and stress corrosion cracking.
Four sections of the third volume of STP 1487 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 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 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 conduct 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.
Pir Toor, Bettis Atomic Power Laboratory, and Joseph Barron, Northrop Grumman, were STP 1487 editors.
STP 1487 is available for $66 from ASTM Customer Service. Tel: 610 832-9585 Fax 610 832-9555 E-mail: service@astm.org Web: astm.org �2007 FastenerNews.com
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