Influence of fall height setting on drop weight tested polypropylene and its crack growing

Citation data:

WSEAS Transactions on Environment and Development, ISSN: 2224-3496, Vol: 14, Page: 243-250

Publication Year:
2018
Usage 160
Abstract Views 160
Repository URL:
http://publikace.k.utb.cz/handle/10563/1007886; http://hdl.handle.net/10563/1007886
Author(s):
Hýlova, Lenka; Mizera, Aleš; Maňas, Miroslav; Maňas, David; Sehnálek, Stanislav; Kubišová, Milena
Publisher(s):
World Scientific and Engineering Academy and Society
Tags:
Social Sciences; Environmental Science; Energy; Drop-weight tester; Fall height; Impact energy; Impact resistance; Polypropylene; Sample penetration
article description
This study deals with polypropylene (PP) which was subjected the drop-weight test. PP is a semicrystalline thermoplastic polymer which is commonly used in many indoor applications and also in the automotive industry in the car interiors. Injection moulded PP samples were subjected the penetration test at different fall heights and the results were subsequently evaluated and discussed. It was found out that the potential energy from 100 to 230 J are suitable for PP penetration; however, as the optimal 100 J can be considered. Higher heights are not needed because of increasing power consumption of the test device. With regard to deformation and crack growing thus PP is a tough material which is firstly plastically deformed and then on one side there is stress concentration, after that the crack spread around the penetrator. This material can be considered as a suitable material for impact applications from point of view of multiaxial impact load.