Patent ID: 11931818
Assignee: LISA DRÄXLMAIER GMBH
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A method for non-destructive testing of a quality of an ultrasonic weld from a welding process, the welding process being performed by an ultrasonic welder including a sonotrode, the method comprising:
inserting a cable packet into the sonotrode;
detecting a time-dependent measurement value over a period of time, wherein the time-dependent measurement value is characteristic of a mechanical or electrical vibration behavior of the welding process;
evaluating a measurement-value course of the detected time-dependent measurement value by using a Fourier analysis; and
comparing a result of the evaluation to a reference value in order to test the quality of the ultrasonic weld,
wherein the detecting of the time-dependent measurement value comprises detecting a differential value and a flow value.