Industrial Applications of Ultrasonic Peening - Relief of harmful tensile residual stresses & fatigue life improvement of wires

摘要

Intense levels of high-frequency acoustic energy (or high-power ultrasonics) have found practical use in many industrial processes. Cleaning, welding and drilling are well-known examples. Other applications include metal forming, treatment of molten metals, stress relief and fatigue improvement of parts and welded elements. In most industrial applications, high-power ultrasonics involves power levels of hundreds to thousands of watts, and ultrasonic systems operating in the frequency ranges from 15 to 100 kHz. Typical amplitudes range from about 10 to 40 microns. An ultrasonic system operating at 20 kHz could create a cyclic acceleration in the range of 40,000 g (acceleration of gravity).