Resumo

LEY-KOO, M.  e  SALAZAR-CRUZ, S.. High signal-to-noise ratio wedges for oblique incidence in ultrasonic testing. Rev. mex. fis. [online]. 2006, vol.52, n.3, pp.295-300. ISSN 0035-001X.

It is experimentally shown that ultrasonic transmission through a column of couplant, with a thin film, at the end, produces greater amplitudes than through a piece of acrylic with the same length. This suggests the use of a wedge that could yield a greater signal-to-noise ratio than that of commercial wedges involved in oblique incidence ultrasonic inspection. The suggestion has been pursued, and the effects: on a weld are presented.

Palavras-chave : Oblique incidence; wedges; ultrasonics; transmission; reflection.

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