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:
The present work focuses on the failure mechanisms that occur in melt-growth compositeceramics mainly composed of fiber eutectics with random orientation. First, the stress field of themelt-growth composite ceramics under a tensile stress was obtained. It can be visualized that tensile forceis transmitted between oxide fiber eutectics by means of shear stress that develop along the interfaces ofoxide fiber eutectics. Consider fiber eutectics having lengths smaller than the critical length. During thecomposite ceramics fracture, fiber eutectics do not fracture. The average stress of a fiber eutectic can bedetermined by the shear stress. Then, the probability of ending fiber eutectics and bridging fiber eutecticscan be gotten by defining a critical ditrict βl. Finally, consider random orientation and length of the fibereutectics. Composite ceramics failure by slip incompatibility. The strength model of the melt-growthcomposite ceramics is built. It is accordance with experiments
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.1648.pdf
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