Measuring and testing – Vibration – By mechanical waves
Patent
1981-09-08
1983-07-19
Kreitman, Stephen A.
Measuring and testing
Vibration
By mechanical waves
128660, G01N 2900
Patent
active
043937128
ABSTRACT:
There is disclosed herein a portable device for inspecting bodies for internal flaws or other internal features. The device is constructed so as to be mounted on the surface of the body, emit and receive ultrasonic energy, and display the same on a liquid crystal display. The device includes a first housing member for supporting a transducer in relation to the surface being inspected. The device also includes a second housing member for supporting and positioning the liquid crystal display in relation to the surface and in relation to the transducer. Interconnecting means are provided for adjustably interconnecting the two members and fixing their positions in a reflection-receiving relation. The liquid crystal support housing is a substantially hollow tubular member having a viewing end and a surface contacting end. The liquid crystal display is positioned intermediate the ends. The contacting surface is constructed to be acoustically coupled to the surface of the body and variable focal length ultrasonic lens is positioned between the coupling and liquid crystal display with acoustic transmission means being provided for transmitting sonic energy from the surface through the lens and to the display where it can be viewed. Optical enhancement means are provided at the viewing end of the housing for assuring a suitable visual image on the display.
REFERENCES:
patent: 4038865 (1977-08-01), Flambard et al.
patent: 4116074 (1978-09-01), Jensen
patent: 4338821 (1982-07-01), Dion
Geren Gerald S.
Kreitman Stephen A.
RAJ Technology Partnership
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