impact testing in plastics

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aashishsc's Avatar (by Gravatar) posted on
September 2, 2007, 4:40 am
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can someone please help me in explaining difference between Izod
Impact testing and Charpy Impact testing
thanks in advace for your advice
waiting for feedback from experts


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JoeM's Avatar (by Gravatar) posted on
October 5, 2007, 1:42 pm
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Re: impact testing in plastics

On Sep 2, 4:40 am, aashis...@gmail.com wrote:

The basic difference is that the rectangular prism sample in Izod
impacting is held on only one end, with the other end being impacted
(causing a bending fracture). In Charpy, both ends are held fixed and
the center is impacted (also a bending fracture mode). My experience
is in metals, but I believe Izod is usually an un-notched sample while
Charpy is usually notched. However, Charpy does have un-notched
samples within the test specification, per ASTM.

ASTM would be the the source for the fine details on these two
methods.



 

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