Abstract: The invention concerns a method for the ultrasound detection and characterisation of defects in a heterogeneous material, comprising the following steps: for each of a plurality of probe positions (z), for a plurality of configurations of the multi-element probe (1), emitting ultrasound by at least one emitting transducer (14) and acquiring a measurement signal by at least one receiving transducer (15), implementing a focusing algorithm and obtaining, for each probe position (z) an image in which each pixel of the image represents a probed point (w) of the material with which a focused amplitude is associated, for each probed point (w), determining a measurement of central tendency of the amplitude and a function representative of the variability of the amplitude, for each image, correcting the amplitude, detecting and characterising defects in the material based on the corrected images.

Abstract: The invention concerns a method for the ultrasound detection and characterisation of defects in a heterogeneous material, comprising the following steps: for each of a plurality of probe positions (z), for a plurality of configurations of the multi-element probe (1), emitting ultrasound by at least one emitting transducer (14) and acquiring a measurement signal by at least one receiving transducer (15), implementing a focusing algorithm and obtaining, for each probe position (z) an image in which each pixel of the image represents a probed point (w) of the material with which a focused amplitude is associated, for each probed point (w), determining a measurement of central tendency of the amplitude and a function representative of the variability of the amplitude, for each image, correcting the amplitude, detecting and characterising defects in the material based on the corrected images.

Abstract: The invention concerns a method for ultrasounds detection of defects in a material, including the following steps: emission of ultrasounds from an ultrasonic emitting transducer positioned against to the material at an emission position, acquisition, by an ultrasonic receiving transducer placed against the material at the reception position, of at least one time signal, for each measurement position, determination of a normalisation term from the values taken by the time signal during an initial portion of the measurement duration corresponding to the reception of ultrasonic waves propagated at the surface of the material; for each measurement position, normalisation of the time signal over the measurement duration using the normalisation term to obtain a normalised time signal, processing of normalised time signals for different measurement positions to detect defects in the material.

Abstract: The invention concerns a method for ultrasounds detection of defects in a material, including the following steps: emission of ultrasounds from an ultrasonic emitting transducer positioned against to the material at an emission position, acquisition, by an ultrasonic receiving transducer placed against the material at the reception position, of at least one time signal, for each measurement position, determination of a normalisation term from the values taken by the time signal during an initial portion of the measurement duration corresponding to the reception of ultrasonic waves propagated at the surface of the material; for each measurement position, normalisation of the time signal over the measurement duration using the normalisation term to obtain a normalised time signal, processing of normalised time signals for different measurement positions to detect defects in the material.