ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In this paper the relationship between CAI and compressive design allowables ofcomposite structures were discussed and it was pointed out that traditional CAI values could notreflect the behavior of composite materials to withstand impact adequately and no relationshipbetween CAI values and compressive design allowables existed. Based on the integrity requirementsof composite structures, it was pointed out that the evaluation system of composite materials towithstand impact should include both damage resistance and damage tolerance. Large numbers of testdata verified that the knee point phenomenon of composite laminates to withstand impact existed.Based on failure mechanisms, it was proposed that the behavior evaluation system of compositesystems to withstand impact was based on the properties at the knee point, that is, the maximumcapability to keep integrity of the front plies (the maximum contact force) characterizing damageresistance and the threshold of dent depth(or impact energy)~compressive strength(or failure strain)curves characterizing damage tolerance
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.334-335.305.pdf
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