Applied Sciences Special Issue: Ultrasonic Guided Waves

Predicting bone strength with ultrasonic guided waves

Recent bone quantitative ultrasound approaches exploit the multimode waveguide response of long bones for assessing properties such as cortical thickness and stiffness. Clinical applications remain, however, challenging, as the impact of soft tissue on guided waves characteristics is not fully understood yet. In particular, it must be clarified whether soft tissue must be incorporated in wavegu...

An Introduction to Ultrasonic Guided Waves

Introduction Compared to ultrasonic bulk waves that travel in infinite media with no boundary influence, guided waves require a structural boundary for propagation. As an example, some guided wave possibilities are illustrated in Figure 1 for a Rayleigh surface wave, a Lamb wave, and a Stonely wave at an interface between two materials.

Chirp Excitation of Ultrasonic Guided Waves (preprint)

Most ultrasonic guided wave methods require tone burst excitations to achieve some degree of mode purity. In addition, it is often desirable to acquire data using multiple frequencies, particularly during method development when the best frequency for a specific application is not known. However, this process is inconvenient and time-consuming, particularly if extensive signal averaging at each...

Special Issue

Special issue on modeling and computational methods in genomic sciences

The discovery of the double-helical structure of DNA is a landmark event which belongs to the past century, but with great influence, in this century, on the research activity on genetic and genomic sciences, due also to the completion of a high-quality comprehensive sequence of the human genome which has made. Indeed we may talk, as observed in [1], about the genome era. The above scientific e...