Welcome to read the next part of the series on the history of ultrasonic testing📖
💡In the 1930s, the concept as well as still basic technical solutions for ultrasonic imaging continued to be developed, despite the lack of available technology to implement it.
💡In 1937, Pohlman in Berlin developed a method of ultrasonic imaging that resembled a radiograph. World War II accelerated the development of ultrasonic research, especially in military production. This made it possible to develop equipment for testing sheet metal, profiles and detecting inconsistencies in them. It was also then that the first ultrasonic heads appeared in the forms we know today. The pulse-echo technique currently in use then began to develop, although the quality of imaging then was very rudimentary compared to today's.
💡F. Firestone, D. O. Sproule and A. Trost worked to implement the ultrasound method on an industrial scale. At that time, they developed systems for testing by the permeation technique (Trost) or, more resembling today's ultrasonic solutions, systems with two transducers.
💡Until 1949, work on implementing UT testing in industrial form was carried out in secret until was published in the trade press. At that time, Josef and Herbert Krautkrämer and Karl Deutsch showed interest in the method and made significant achievements, becoming a permanent part of the history of industrial NDT testing. More in the next section!✨