Reader Question – Ultrasonics – “Near Field”

Posted on December 5, 2011January 6, 2020 by John Fuchs

A reader has asked for a description of how “near field” ultrasonics works. First of all, the term “near field” is one that is not well defined in the ultrasonic cleaning world. For the purpose of this discussion regarding ultrasonic cleaning, “near field” means putting the ultrasonic source close to the work piece. It may …

Ultrasonics – Monitoring Ultrasonic Performance

Posted on December 1, 2011July 24, 2019 by John Fuchs

In the blog “Reader Questions – Monitoring Ultrasonic Transducers,” I suggested a couple of ways one might test individual ultrasonic transducers to assure they have not become ineffective due to de-bonding from the cleaning tank. In an extension of the spirit of that blog, quality control measures for ultrasonic cleaning performance, I decided to check out a paper I …