ISSN:
1662-8985
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:
Experimental works using a drop weight impact test method have been performed on acircular sheet specimen to evaluate and to characterize the impact resistance of the sheet-type plasticcomponents designed for automotive wheel covers. Evaluation has been conducted for a set ofengineering plastics: polycarbonate (PC), acrylonitrile-butadiene-styrene (ABS) and their blend(PC/ABS). The testing results showed that the PC/ABS blend specimens failed in brittle mannerunder higher impact speeds with very few of whitening zones. Secondary cracks capturedperpendicular to fracture surface were also found in the mid-plane of the scattered PC/ABS blendspecimens. Investigation is then focused on this blend and the testing results describe that impactresistance of the specimen made of this alternative material is determined by ABS not by PC.Combination of structures between PC and ABS through the thickness in the core due to theirimmiscibility was observed by scanning electron microscope (SEM) on the etched PC/ABS specimen.This latter result well correlates the results obtained from the testing. It therefore reveals thatimmiscibility between PC and ABS in the blend plays an important role in determining the impactresistance of the components. This paper also presents simulative results of the test obtained from aFEA work by introducing a 3D- layered finite element (FE) model of the PC/ABS specimen to takeinto account effect of a layer in the core on the behavior of the blend
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.33-37.381.pdf
