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:
Thickness effect is studied experimentally. At free surface of the specimen, shear lipfracture pattern appears, though dimple fracture pattern is observed inside of the specimen. The areaof shear-lip fracture changes due to the change of the specimen thickness. In this study, experimentalstudy is conducted by changing specimen thicknesses. Fracture surfaces are precisely observed usingSEM, and dimple patterns on them are observed. At the free surface, very narrow no-void area isobserved. It is also found that many voids are nucleated in shear-lip fracture area. FEM simulation iscarried out using Gurson’s constitutive equation. It is found that shear-lip type fracture is simulatednear free surface area by this method. The results show similar tendency with the experimentalobservation
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.839.pdf
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