Friedhelm Schlawne

Title: Friedhelm Schlawne and Ultrasonic Testing Innovations.

Introduction

Friedhelm Schlawne is an inventor associated with Duisburg, Germany. His work includes methods and equipment for detecting flaws in elongated workpieces, such as tubes and bars. He is credited with 5 patents.

Latest Patents

One of Schlawne’s patents describes a method for detecting discontinuities in elongated workpieces using ultrasonic testing. Signals captured at one length position are digitized and compared with signals from another position, offset by a multiple of the testing system’s shot distance. Evaluating the difference between the signals helps identify discontinuities.

Another patent concerns a process and device for detecting flaws in stretched workpieces. The process uses fixed electrodynamic transducers positioned around the specimen, which moves axially without rotating. The transducers generate wave pulses in alternating directions, and reception signals are evaluated separately. The device uses symmetrically arranged transducers with separate transmitting and receiving coils, local electronics, and individual analysis channels.

Career Highlights

Schlawne’s listed company affiliations include Mannesmann Aktiengesellschaft and Mannesmannröhren. His patent work reflects a focus on nondestructive testing and the inspection of industrial materials.

Collaborations

He is associated with fellow inventors Heinz Schneider and Alfred Graff.

Conclusion

Friedhelm Schlawne’s patents address ultrasonic and electrodynamic techniques for identifying flaws in tubes, bars, and other elongated workpieces.