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 influence of surface roughness in crack face on the behavior of crack growth is studied.Numerical results derived from two kinds of mechanical models representing the macroscopic andmicroscopic asperity supposed to exist in the face of an initial crack are compared. In macro-asperitymodel, the influence of location and size of single-triangular asperity on the stress intensity factor isevaluated. In this model, it is found that the mode-I stress singularity appears in certain circumstanceseven under overall compression. In micro-asperity model, influence of friction coefficient on thetrajectory of crack path is discussed. There exists a tendency that a path of wing crack growthbecomes more straight and parallel to axis of compression as the friction coefficient increases
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.324-325.125.pdf
