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- W1986386479 abstract "Abstract Direct ultrasonic visualization of defects (duvd) is a method of instantaneous ultrasonic imaging in which reflections of repetitive ultrasonic pulses are focused into a transparent medium and made visible by a stroboscopic Schlieren apparatus. An improved system using two polystyrene lenses in water and short pulses of 1.5 MHz ultrasound is described. Resolution of 1 mm both in the direction of the ultrasonic beam and transversely is demonstrated over a 25 x 25 mm2 field. The potential performance is discussed; good resolution can be expected but the sensitivity is about 50 dB short of that of conventional pulse-echo techniques, so that general applications in non-destructuve testing and medicine are ruled out. Uses may exist in short-range underwater work for rapid, low sensitivity inspection of materials." @default.
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- W1986386479 date "1979-05-01" @default.
- W1986386479 modified "2023-10-02" @default.
- W1986386479 title "Developments in direct ultrasonic visualization of defects" @default.
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- W1986386479 doi "https://doi.org/10.1016/0041-624x(79)90066-0" @default.
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