Nondestructive testing and evaluation (NDT&E) are commonly used in the industry for their
ability to identify damage and assess material conditions. Ultrasonic testing (UT) is one of …

This article presents the investigation of a nonlinear Lamb wave time reversing technique for
fatigue crack detection and quantification. A 2D analytical framework is initially presented …

This paper offers a comprehensive critical appraisal and experimental comparison of
leading linear baseline-free techniques applied in guided wave-based structural health …

This study proposes a modified virtual time-reversal (VTR) algorithm for baseline signal-free
damage detection in plate-like structures. The physical actuation and sensing of Lamb …

A damage localization method based on the time reversal focusing of the mode-converted
scattered Lamb wave is proposed for plate structures with a non-symmetric defect in the …

A real-time nonlinear ultrasonic method based on vibro-acoustic modulation is applied to
monitor early bolt looseness quantitatively by using piezoceramic transducers. In addition to …

In this paper, the time reversal method based on piezoelectric active sensing is investigated
for health monitoring of bolted joints. Experiments are conducted on bolted joints to study the …

Lamb wave techniques have been widely used for structural health monitoring (SHM) and
nondestructive testing (NDT). To deal with dispersive and multimodal problems of Lamb …

This experimental study presents Lamb wave based diagnostics of damage in a composite
plate using time reversal of signals for baseline-free damage detection. A modified time …

The Lamb wave time reversal method has widely been investigated as a baseline-free
damage detection technique for structural health monitoring. Due to the mode tuning effects …