Agfa Ndt Gmbh

Gr Inspection Technologies Gmbh

Bernd Kirchner

Paul Buschke

The invention relates to an ultrasound control device for non-destructively inspecting a workpiece. The inventive ultrasound control device comprises a transmitting-receiving sensor provided with an element for connecting to the input surface of a controlled workpiece, a transmitter which is connected to the sensor and sends pulses produced thereby to said sensor, a receiver connected to the sensor and a screen which is connected to the receiver for displaying electric echo signals received by the receiver. The sensor transmits ultrasound pulses which, on one hand are reflected by the input surface and return to said sensor, and penetrate into the workpiece and are reflected at least once by the back wall thereof, on the other hand. Said ultrasound control device also comprises a bar display for visualising the received electric echo signals. At least one signal value displayed on said display in a real time results from one of electric echo signals reflected by the input surface: an input echo reflected by the input surface, at least one echo from the back wall and/or one signal calculated on the basis of several echoes reflected thereby.

Ultrasonic inspection apparatus for inspecting a workpiece

The invention relates to a device (), for the preparation, execution and evaluation of a non-destructive analysis with one or more suitable analysis devices () of any type. The device () includes an input device (), an output device (), a data store, a data processing unit (), an interface () for connection of the analysis device (), by means of which data may be transmitted in both directions and a standardised data processing programme. It is possible to generate an analysis flow scheme, by means of the data processing programme, whereby an analysis object () can be defined, various analysis regions () of the analysis object () can be determined, a particular analysis device () can be selected, analytically-relevant parameters can be selected and determined for the selected analytical device (), the type of visualisation and the analysis of the measured analytical values can be determined and the obtained analytical results can be archived and stored.

Device for the preparation execution and evaluation of a non-destructive analysis

The invention relates to a method for determining the threshold value of screens which enable an evaluation of a sound coupling during the ultrasound testing of a series of spot welding joints of a selected type. Initially, a geometrical minimal thickness dMin is established for the spot welding joints. At least one echo of the front surface (entrance echo) is received in addition to one echo of the first reflection on a rear wall of the spot welding joint (first rear wall echo) and at least one further (n-th) rear wall echo. The propagation time tMin of the ultra sound pulse is defined for the path to the front surface to the rear wall and back to the front surface at a minimal thickness dMin and a propagation time tT for the total thickness. A first screen (B) is set for the signal of the rear wall echo, starting at a moment in time tS=tE+tMin&#x2212;tSA and ending at a moment in time tT=tE+tT+tSE, whereby tSA and tSE are additional small security measures. An n-th screen is correspondingly determined for the n-th rear wall echo. The testing head is oriented differently.

Growing community of inventors

Erftstadt, Germany

Bernd Kirchner