Method for the nondestructive recording of a rotational movement of a specimen, device therefor as well as probe unit

Test unit for a spatially resolved determination of a structural characteristic of a specimen, comprising:

• a. a transmitter configured to transmit a temporal sequence of excitation signals Si adapted to penetrate into the specimen at least to some extent and interact with corrosion of the specimen,
• b. an array comprising a plurality of receivers configured to receive echo signals, which result from the interaction of the excitation signals Si, transmitted by the transmitter with said corrosion, wherein the echo signals for one of the excitation signals Si, which are absorbed by the plurality of receivers, form a set M (Si) of measurement values, and
• c. an evaluation unit configured to determine a rotational movement of the array on a surface of the specimen from a plurality of measurement value sets M (Si) which are correlated with temporally sequential excitation signals Si,
• wherein the test unit is configured to create an image of a spatial distribution of the corrosion from movement data recorded by the test unit as well as the measurement value sets M (Si).

Device for a nondestructive creation of an image of a spatial distribution of a structural characteristic of a specimen, comprising:

• a. a first transmitter configured to transmit a temporal sequence of excitation signals P adapted to penetrate into the specimen at least to some extent and interact with corrosion of the specimen,
• b. a first receiver configured to absorb the excitation signals P transmitted by the first transmitter as echo signals after interaction with said corrosion,
• c. a second transmitter configured to transmit a temporal sequence of excitation signals Si adapted to interact with the specimen,
• d. an array comprising a plurality of second receivers configured to receive echo signals, which result from interaction of the excitation signals Si transmitted by the second transmitter with the specimen, wherein the echo signals for one of the excitation signals Si, which are absorbed by the second receivers, form a set M (Si) of measurement values,
• e. an evaluation unit configured to determine a movement of the array on a surface of the specimen from a plurality of measurement value sets M (Si) which are correlated with temporally sequential excitation signals Si of the second transmitter, and
• f. a visualization unit configured to create an image of the spatial distribution of the corrosion from the movement of the array on the surface of the specimen recorded by the evaluation unit as well as from the echo signals received by the first receiver.

Device for a spatially resolved determination of a structural characteristic of a specimen, comprising:

• a. a first transmitter configured to transmit a temporal sequence of excitation signals Si adapted to penetrate into the specimen at least to some extent and interact with the specimen,
• b. an array comprising a plurality of first receivers configured to receive echo signals, which result from the interaction of the excitation signals Si, transmitted by the first transmitter, with the specimen, wherein the echo signals for one of the excitation signals Si, which are absorbed by the receivers, form a set M (Si) of measurement values, and
• c. an evaluation unit configured to determine a rotational movement of the array on a surface of the specimen from a plurality of measurement value sets M (Si) which are correlated with temporally sequential excitation signals Si of the first transmitter,
• wherein the device is configured to create an image of a spatial distribution of the structural characteristic of the specimen from movement data recorded by the device as well as the measurement value sets M (Si), within a created image of the specimen as designed or manufactured.

Method for a nondestructive determination of a rotational movement of an array on a surface of a specimen, comprising the following steps:

• a. transmission of a temporal sequence of excitation signals Si adapted to penetrate into the specimen at least to some extent and interact with the specimen,
• b. reception of echo signals, which result from the interaction of the transmitted excitation signals Si with the specimen, by means of an array comprising a plurality of receivers, wherein the echo signals for one of the excitation signals Si, which are absorbed by the receivers, form a set M (Si) of measurement values,
• c. determination of a rotational movement of the array on the surface of the specimen from a plurality of measurement value sets M (Si) which are correlated with temporally sequential excitation signals Si, and
• d. creation of an image of a spatial distribution of a structural characteristic of the specimen from determined movement data as well as measurement value sets M (Si), within a created image of the specimen as designed or manufactured.