Method and means for measuring the depth of cracks
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Ultrasonic multiple probe
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Piezopolymer ultrasonic transducer
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Method and device for determining fractures on the surface of workpieces
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METHOD AND DEVICE FOR MEASURING THICKNESS ON TEST UNITS BY MEANS OF ULTRASOUND
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METHOD AND DEVICE FOR MEASURING THICKNESS
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Method and device for generating circuital vector fields
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Method and device for imaging sound fields, in particular ultrasonic fields, with the aid of optical holographic interferometry
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Method and device for generating short narrow-band sound pulses by means of ultrasonic probes
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Automatic ultrasonic flaw detection in tubes and rods - using controlled seal between coupling medium and test chambers
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COIL DEVICE FOR DESTRUCTION-FREE MATERIAL TESTING
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Testing for fissures in ferromagnetic workpieces - applying magnetic particles while perpendicular fields are produced by field and current circulations
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Ultrasonic technique for metrology - using peak value sensors responding to test piece end surfaces to operate flip=flop, gate element and counter
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Method and device for transmitting acoustic pulses, particularly in the field of ultra-sounds, and application of such pulses in particular to non-destructive control of materials
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Automatic ultrasonic test equipment for cylindrical prods. - has transducer arrays concentric to test piece for continuous testing and fault detection
JPS5377579A
Automatic reading method and apparatus for optical indication of cracks on surfaces of materials
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Ultrasonic test appts. with CRT display - has variable width and position controls to select region for study
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Acoustic signal generation system - has ultrasonic signals produced with range of attenuation characteristics for material testing
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Detection of superficial fissures on motor vehicle parts - employs automatic optical system to examine parts in scanning mode (SW 27.2.78)
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Ultrasonic measurement evaluation system - compares logarithmic digital amplitude signals from each ultrasonic detector with two limit values
