Time-domain spectroscopy (TDS) in the terahertz (THz) frequency range is gaining in
importance in nondestructive testing of dielectric materials. One application is the layer …

Terahertz time-domain spectroscopy (THz-TDS) provides a non-contact, non-destructive
method for evaluating different materials and their properties. This short review discusses …

The quality of coatings in industrial applications and scientific research with thicknesses in
the micrometer range is an important criterion for quality management. Therefore, thickness …

In this work, a terahertz time-domain spectroscopy (THz-TDS) system was used to measure
the thickness of thermal barrier coatings (TBCs) and characterize the interface morphology …

Automotive coating plays an important role in car industry. They protect the car bodies from
various aggressive weathering and mechanical deformations. Though many techniques …

SUMMARY A method to determine the refractive index and thickness of the topcoat of a
thermal barrier coating (TBC) from the reflected waveforms of terahertz waves was …

Particle-reinforced polymer matrix composites (PMCs) are often used as radar-absorbing
materials (RAM) in aircraft stealth applications. The thickness evaluation of such …

Nowadays, aircrafts and cars are coated with several layers of coating. Hence, demands for
thickness monitoring of each individual layer within a multi-layer coating system are rising …

Terahertz time-domain spectroscopy (THz–TDS) relies heavily on knowing precisely the
thickness or refractive index of a material. In practice, one of these values is assumed to be …

There is a minimum measurable thickness when gauging micron-level coating films with
time-of-flight based terahertz thickness measurement technologies. To improve this …