Did you know?

Ultrasonic testing was developed by a team of scientists at the National Physical Laboratory (NPL) in the UK during the 1940s. The team, led by Dr. George W. Hasted, was working on ways to measure the properties of materials using high-frequency sound waves.

They discovered that by using frequencies above the range of human hearing, they could create sound waves that could be used to detect and measure the thickness of materials, as well as the presence of internal defects.

This led to the development of ultrasonic testing as a non-destructive testing (NDT) method, which has been widely used in various industries to evaluate the quality and condition of materials.