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:
Compression induced formation of a damage zone, which would result in a shear fault inbrittle solids is studied. In a compression test of flawed PMMA, an apparent damage zone composedof large number of scattered cracks, which have no intersection but exist closely with each other, isexperienced. The damage zone first appears in a vicinity of tips of artificial flaw and then extendsgradually with increase of applied compression. The direction of extension of damage zone isobserved to incline about 0 30 from the axis of principal compression. A mechanism of the extensionof damage zone with increase of applied compression is discussed using a scattered cracking model. Itwas found that each crack composing the damage zone has a possibility to open due to crack-to-crackinteraction and a localized tensile stress appears both inside and outside of the damage zone. Thelocalized tension appeared in the interior of the damage zone may increase crack density, while that ofappeared in the exterior of the damage zone could bring an extension of the damage zone
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.965.pdf
Permalink