Inspection of the internal portion of objects using ultrasonics

Details Inspection of the internal portion of objects using ultrasonics Inspection of the internal portion of objects using ultrasonics

1984-01-27

1986-06-17

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

73643, 73644, 310336, G01N 2904

Patent

active

045948976

ABSTRACT:
A transducer assembly and a system application wherein said transducer assembly may be used in the inspection of iron, steel, aluminum, as well as plastic materials as a homogeneous object in the form of a sheet, slab or bloom. Inspection is through use of ultrasonic acoustic energy propagated through ambient air. A coupling medium in the form of matching layers efficiently couple the transducer assembly to the ambient air.

REFERENCES:
patent: 3512400 (1970-05-01), Lynnworth
patent: 3850027 (1974-11-01), Nakanishi et al.
patent: 3928777 (1975-12-01), Massa
patent: 4153894 (1979-05-01), Alphonse et al.
patent: 4333028 (1982-06-01), Panton
patent: 4366712 (1983-01-01), Bathmann et al.
patent: 4378699 (1983-12-01), Wickramasinghe
"Use of Piezoelectric Transducers for Contactless Ultrasonic Product Inspection", Zaklyukoyskii et al, Defektoskopiya, No. 3, pp. 28-34, Mar. 1978, Translated 1978 by Plenum Publishing Corp.

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