A method was described in Materialnyt 1 (1995) on "Material
properties determined by vibration analysis". This new method of
materials testing has been further developed as the result of
research at the Building Materials Laboratory, Technical
University of Denmark.Practical aspects of the method have been
studied by testing a number of building materials. The method has
been PC-integrated with the Brüel & Kjær's type 3550 vibration
equipment - and special user menus have been developed to
facilitate handling of the method in practice. Limits on range of
test frequencies applied are discussed with respect to
configurations of vibration equipment and shapes of test specimens
used. Sensitivity studies have been made to identify sources of
errors which may disturb the reliability of the method used in
practice. Practical aspects with respect to test set-ups are
considered in these studies - as well as theoretical aspects with
respect to the handling of mathematics involved to convert
vibration signals to material properties. The latter aspects are
referred to in this research note where the numerical part of the
method described in Materialenyt 1 (1995) is imporved.The reader
of this note is assumed to be familiar with the method considered
as it is described in Materialenyt 1 (1995) previously referred
to. The whole set-up, including symbols, terms, viscoelastic
models, and some equations refer to this publication directly
without further comments.
Publication status | Published - 1997 |
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