| A.
Mal, F. J. Shih, W. H. Prosser, 2003, “Lamb
Waves from Impact Damage in Composite Plates,”
Instrumentation Measurement and Metrology, Special
Issue on Ultrasonic Methods for Material Characterization,
3, 11–37
Lamb
Waves from Impact Damage in Composite Plates
ABSTRACT
This
paper is concerned with the detection of low velocity
impact and the associated internal damage in composite
structural components using the Lamb waves generated
by these events. Impact tests are carried out on graphite
epoxy cross-ply composite plates using an instrumented
impact testing system. The contact force and the surface
motion caused by the impact load are recorded at several
points on the plate surface away from the impact location
and are analyzed based on theoretical simulations.
Post-impact nondestructive, as well as destructive
evaluations are also preformed to determine the internal
damage caused by the impact load. Further research
on the detection method can lead to the development
of a viable impact monitoring system for composite
aircraft and aerospace structures using distributed
broadband sensors.
(Article
in PDF, Bermes Science Publications)
|
