Contemporary composite materials are continuously being modified and improved in
accordance with growing quality requirements of aerospace systems. New manufacturing …

The paper deals with the application of nonlinear vibro‐acoustic modulation technique for
detection and localization of impact damage in a laminated composite plate. An imaging …

Composite materials used in aerospace structures can be affected by a variety of defects,
such as delaminations and disbonds, which may occur during fabrication or may be caused …

The paper presents an application of nonlinear acoustics for impact damage detection in
composite laminates. Two composite plates were analysed. A low-velocity impact was used …

This article describes the development and application of a 16x16 array (matrix) laser
vibrometer based on a parallel architecture which supports fast 2D measurement of arbitrary …

Advanced composite materials are prone to various types of damage during the process of
manufacturing and long-time service. Ultrasonic detection methods have been widely …

Resonant modes of non-destructive testing (NDT) which make use of local damage
resonance (LDR) have been developed recently and demonstrated a significant increase in …

Frescoes, icons and composite materials show analogies in terms of defects, both present
layer-to-layer detachments and delaminations and surface cracks; past experiences …

Very sensitive structural health monitoring methods are needed to detect barely visible
impact damage in composite materials. Based on extracting non-linear modulated …

Nonlinear ultrasonics has become a major research focus in non-destructive testing (NDT)
in recent years. Techniques using higher harmonics or cross-modulation of two excitation …