The uneven and complicated porose microstructure of thermal barrier coatings brings a big
challenge for accurate and reliable thickness measurement due to the resultant change of …

Laser ultrasonics is a promising non-contact inspection technique but faces challenges of
low signal-to-noise and low amplitude under non-destructive thermoelastic regime. In this …

Non-destructive testing (NDT) can evaluate the characteristics and conditions of materials
without damaging them. In existing NDT techniques, laser ultrasonic testing (LUT) uses the …

The complex microstructure of thermal barrier coatings (TBCs) and varying lift-off distance
bring a great challenge for accurate terahertz thickness measurements. Available methods …

It is necessary to study the influence mechanism of blade thickness on the photoacoustic
signals since material thickness will affect defect detection precision by affecting the types …

Thermal barrier coating is commonly used to insulate the hot end components of aero
engine and gas turbine in order to meet extreme high temperature service conditions. The …

Ultrasonic guided waves offer a promising method of monitoring the online temperature of
plate-like structures in extreme environments, such as aero-engine nozzle guide vanes …

Terahertz (THz) thickness measurements of thermal barrier coatings vary within a certain
range in terms of accuracy and occasionally generate unsatisfying results. To identify such …

The study develops the extended stress and strain method (ESSM) capable of extracting the
stress-strain perpendicular to the 3D thermal barrier coatings (TBCs) interface and shear …

Accurate perception of biological tissues (BT) thickness is essential for preliminary
evaluation of medical diagnosis and animal nutrition. However, traditional thickness …