The estimate of mass properties
from the massline characteristic of experimental FRFs
has attracted the attention of several authors during the last
decade. The problem is tipically non-linear and, in the technical literature,
iterative as well as direct methods are proposed for its solution.
In this paper a new direct procedure is developed.
The non-linear problem is divided into a series of
simpler linear problems and solved in subsequent steps. A careful
analysis is performed on the conditioning of the systems in order
to assess the minimum number of required measurements, necessary
to solve the problem even in noisy environments.
The proposed approach produces accurate results as it is shown
for two real experimentally tested systems: a two and three-dimensional
structure, respectively. Of course an accurate measurement of the masslines
characteristics is required. An extended discussion on this point
is presented
