Measurements were made of the attenuation in thin samples of plasma-sprayed
molybdenum, nickel aluminide and aluminium in the frequency range 2.5–15 MHz. It was …

Measurements have been made of the attenuation in thin samples of plasma-sprayed
molybdenum, nickel aluminide and aluminium coating materials in the frequency range 2.5 …

A study was made of the amplitude distributions of acoustic emission (AE) from several kinds
of plasma-sprayed coatings during four-point bending. A method is described whereby the …

A study examining the application of ultrasonic testing to plasma sprayed coatings is
presented. It is shown that bonding defects in aluminium and molybdenum coated samples …

Ultrasonic methods are developed for characterizing plasma-sprayed coatings. First,
ultrasonic spectroscopy is used to determine the acoustic properties of various plasma …

A thermal wave technique for the non-destructive examination of plasma-sprayed coatings is
described. Measurements of molybdenum NiAl and aluminium coatings are presented to …

Thermally sprayed coating are usually tested destructively, ie metallo-graphically or by
applying various strength tests. In most cases the results of non-destructive testing NDT …

Acoustic emission is observed from flame-and plasma-sprayed Ni Al, Al 2 O 3 TiO 2 and
Al 2 O 3 coatings exposed to water immediately after spraying. The greatest activity is …

The photoacoustic detection of subsurface defects in metallic plasma coatings on metallic
substrates has been achieved. The investigation is performed with samples that contain well …

In ultrasonic testing of thermally sprayed coatings difficulties often occur, which relate partly
to poor lateral and axial resolution, partly to the coarse grained structure of the coatings, and …