Abstract
A 10 MHz transducer with 80% bandwidth was used to detect changes in contact pressure over time for two rough solid surfaces. Changes in the reflected pulse frequency spectrum were analyzed using the second central moment (skewness) in order to identify changes in the non-linear interface properties, particularly decreased acoustic reflection for lower frequencies. This process was applied specifically to monitor the contact pressure between a copper welding electrode and a steel plate for resistance spot welding. Discontinuities in the expected contact pressure at this interface were used to assure process quality and detect process disruptions, such as expulsion.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.