In this work, we numerically investigate the diffraction management of longitudinal elastic waves propagating in a two-dimensional metallic phononic crystal. We demonstrate that this structure acts as an “ultrasonic lens”, ...

Buffer rods are usually plastic or metallic solid cylinders of known acoustic properties, which are placed between the ultrasonic transducer and the sample under study. For some applications, the buffer rod end in contact ...

Nondestructive testing of metallic objects that may contain embedded defects of different sizes is an important application in many industrial branches for quality control. Most of these techniques allow defect detection ...

Ground Penetrating Radar (GPR) is a prospecting method frequently used in monitoring asphalt pavements, especially as an optimal complement to the defection test that is commonly used for determining the structural condition ...

Non-destructive testing (NDT) is of paramount importance in both the aerospace and general markets. Nowadays, several NDT techniques are available and widely recognised for inspection services. However, wide research is ...

The research presented in this thesis is framed in the preliminary study for the development of an innovative Non-Destructive Testing (NDT) technique concept based on deposition of a ferrofluid consisting of magnetic ...

The mechanical characterisation of existing masonry in historical structures encounters several technical dif-ficulties due to the complexity and heterogeneity of this traditional material, as well as to the need for ...