| dc.description.abstract | A study has been made of the Instrumented Falling Weight Impact
Test, investigating and analysing the effect of test parameters and
specimen geometry on the characteristic results of the test. Two
materials, poly(methylmethacrylate) and high density polyethylene
are chosen, which exhibit typical extremes of brittle or ductile
behaviour. High speed photography is used to monitor the development
of deformation and progress of failure during the impact test. The
major features of typical force-time curves obtained from the tests
on PMMJL and HDPE are thus characterised in terms of failure
development and quantified. Analyses are adopted which enable
materials property data, such as modulus, E , fracture or yield
stress, [Sigma][Subscript] f , [Sigma] [Subscript] y and a fracture parameter, G [Subscript] c to be obtained from the
tests conducted on flat plates.
A framework is proposed which would enable extraction of similar
materials data from a wide range of plastics during routine testing
with the falling weight test method. | en_US |
