Air-coupled ultrasonic (ACU) is a contactless ultrasonic measurement method which has
become increasingly popular for material characterization. This is due to a growing number …

Composite materials are widely used in most industries due to their high specific strength,
specific stiffness, and their relatively lighter weight compared to other traditional materials …

Local ultrasonic resonance spectroscopy (LURS) is a new approach to material inspection,
where the specimen is locally excited by a short mechanical impulse while its local …

Air-coupled ultrasound sensors have advantages over contact ultrasound sensors when a
sample should not become contaminated or influenced by the couplant or the measurement …

A scanning airborne ultrasound source technique was developed to overcome the riskiness
of laser ultrasound, which uses an ultrasound source that has a fixed sound wave focusing …

In this paper results of the damage assessment of fiber-reinforced composite panels using
guided wave propagation phenomenon are presented. For this purpose, non-contact elastic …

The increasing use of natural fibre composites in at least semi-structural applications along
with a demand for a fast and accurate damage detection for quality purpose and in-service …

We proposed high-speed visualization of defects by guided waves using an airborne
ultrasound phased array (AUPA). The AUPA can move the focal point of the acoustic wave …

We propose the visualization of defects by means of guided waves generated
simultaneously at multiple frequencies using the nonlinearity of a high-intensity ultrasonic …

This study tests the feasibility of air-coupled ultrasound for the characterization of the textural
properties of pork burger patties. The samples were prepared by mixing lard at different …