Abstract: The present invention relates to an imaging method including the following steps—successively transmitting first and second waves in response to the successive application of first and second electrical excitation signals in separate first and second frequency bands contained in a range of excitation frequencies of the transmitter/receiver, receiving and converting respective first and second acoustic or electromagnetic echoes into respective first and second electrical reception signals, —digitising (100) the first and second electrical reception signals, —mixing (200) the first and second digital signals at different demodulation frequencies, —filtering (300) the first and second demodulated signals, —decimating (400) the first and second filtered signals.

Abstract: The present invention relates to a probe for measuring the viscoelastic properties of a human or animal medium of interest, such as a liver, said measurement consisting of: generating at least one low-frequency elastic wave in the medium of interest, simultaneously with the generation of the low-frequency wave: emitting high-frequency ultrasonic waves, and receiving acoustic echoes due to the reflections of the ultrasonic waves in the medium of interest, the probe comprising: a housing (31), a transducer array (33) for emitting high-frequency ultrasonic waves and receiving acoustic echoes, characterized in that the probe (3) further comprises at least one inertial vibration exciter (34) including: a fixed part (341) mechanically integral with the transducer array (33), a mobile part (342) capable of moving relative to the fixed part to produce vibrations in order to generate the low-frequency elastic wave.

Abstract: Platform for an aircraft turbo machine fan rotor, the platform being configured to be secured to a fan disc between two adjacent fan blades. The platform further including a longitudinal wall defining an aerodynamic external face. The wall includes a honeycomb structure interposed between two skins which are respectively an internal skin and an external skin, with the external skin defining the aerodynamic external face.

Abstract: An ultrasound system comprising a probe adapted for emitting and receiving ultrasound waves inside a medium, and a processing unit connected to said probe and adapted for processing signals from the probe. The probe is configured so as to behave as a Fresnel lens for focusing the ultrasound waves. The processing unit analyses signals from the probe for sensing the medium at a plurality of focal points.

Abstract: Platform for an aircraft turbo machine fan rotor, the platform being configured to be secured to a fan disc between two adjacent fan blades. The platform further including a longitudinal wall defining an aerodynamic external face. The wall includes a honeycomb structure interposed between two skins which are respectively an internal skin and an external skin, with the external skin defining the aerodynamic external face.

Abstract: Analysis device for detecting solid particles in suspension in a lubricant, the analysis device comprising one or more ferromagnetic solid particle sensors, one or more other sensors able to detect non-ferromagnetic solid particles, and one or more magnets. The ferromagnetic solid particle sensors are offset in a direction perpendicular to a main direction of flow of the lubricant in relation to the other sensors, and the magnets are arranged so as to attract ferromagnetic solid particles towards the sensors of ferromagnetic solid particles by drawing them away from the other sensors.

Abstract: A method for monitoring an aircraft turboshaft engine including a vibration sensor capable of outputting a vibration signal and a spark plug. The method includes, based on the vibration signal output by the vibration sensor, a step of determining a level of vibration of the turboshaft engine as well as a step of determining an indicator of spark plug wear.

Abstract: Method for monitoring an ignition system of an aircraft turbine engine, the ignition system including a combustion chamber fitted with a spark plug and an ignition casing, the turbine engine including an accelerometer and an acoustic sensor. The method includes steps of: acquiring accelerometric and acoustic data representative of spark plug breakdown noises from signals generated by the accelerometer and the acoustic sensor, detecting breakdown peak times from the accelerometric data and the acoustic data, correlating the breakdown peak times detected from the accelerometric data and the breakdown peak times detected from the acoustic data, and establishing a diagnosis of the health of the ignition casing and a diagnosis for the spark plug on the basis of the correlation results.

Abstract: Method for acquiring data for detecting damage to a bearing, comprising the following steps: obtaining a vibration signal from the bearing over a period of time, determining spectrograms of said vibration signal at various instants of the period of time, detecting the peaks on each spectrogram, from among the detected peaks, retaining the peaks which, in spectrograms corresponding to successive instants and transformed through synchronous resampling at a rotational speed of the bearing, would be present at the same frequency, with a predetermined tolerance, identifying spectral lines corresponding to the retained peaks, and storing information representative of said spectral lines in a record able to be used by a unit for detecting damage to the bearing.

Abstract: An ultrasound system comprising a probe adapted for emitting and receiving ultrasound waves inside a medium, and a processing unit connected to said probe and adapted for processing signals from the probe. The probe is configured so as to behave as a Fresnel lens for focusing the ultrasound waves. The processing unit analyses signals from the probe for sensing the medium at a plurality of focal points.

Abstract: A method for monitoring an aircraft turboshaft engine including a vibration sensor capable of outputting a vibration signal and a spark plug. The method includes, based on the vibration signal output by the vibration sensor, a step of determining a level of vibration of the turboshaft engine as well as a step of determining an indicator of spark plug wear.

Abstract: An ultrasound imaging system is disclosed, including: —an ultrasound probe including transducers, —a digital acquisition board including: —electronic circuits adapted to control the transducers to emit ultrasound waves and to convert signals sensed by transducers into digital data, and —a real-time sequencer adapted to control the electronic circuits to drive the emission and reception of ultrasound signals, based on working parameters and sequence parameters, and —a computer connected to the digital acquisition board and including a computer's memory, the parameters being stored in the computer's memory, the digital acquisition board further includes a DMA controller adapted to access the computer's memory in reading and writing by implementation of DMA protocols, and the sequencer is adapted to send requests to the DMA controller to recover the parameters from the computer's memory in real time.

Abstract: A vaned wheel device traversed by a radial drive shaft includes radial arms, one of which contains the shaft, and stationary vanes manufactured separately from the casing and a ferrule and assembled thereto. A sleeve encompassing the shaft traverses the casing and serves to support a bearing for supporting the shaft with positional accuracy, and maintaining tightness by forming a single cavity with the radial arm cavities traversing the shaft.

Abstract: A fusion draw apparatus includes a pair of engagement rollers. At least one of the pair of engagement rollers includes a circumferential knife edge configured to cooperate with the other of the pair of engagement rollers to thin the edge portion or sever the edge portion from a central portion of the glass ribbon within the viscous zone of the glass ribbon. In further examples, fusion draw methods include the step of thinning the edge portion or severing the edge portion from the central portion of the glass ribbon within the viscous zone.

Abstract: The ultrasound imaging system comprises an ultrasound probe (3) and computer (20) for controlling the ultrasound probe and for visualizing an image. The system comprises a processing device located between the probe and the computer that comprises a processing unit (15) to operate an imaging method and switch unit (13) for routing the input and output data.

Abstract: An ionic probe is provided according to the invention. The ionic probe includes an active electrode configured to generate a measurement signal for an external test fluid, a first reference electrode configured to generate a first reference signal, and an at least second reference electrode configured to generate at least a second reference signal. The measurement signal is compared to the first reference signal and the at least second reference signal in order to determine an ionic measurement of the external test fluid.

Abstract: The ultrasound imaging system comprises an ultrasound probe (3) and computer (20) for controlling the ultrasound probe and for visualizing an image. The system comprises a processing device located between the probe and the computer that comprises a processing unit (15) to operate an imaging method and switch unit (13) for routing the input and output data.

Abstract: A fusion draw apparatus includes a pair of engagement rollers. At least one of the pair of engagement rollers includes a circumferential knife edge configured to cooperate with the other of the pair of engagement rollers to thin the edge portion or sever the edge portion from a central portion of the glass ribbon within the viscous zone of the glass ribbon. In further examples, fusion draw methods include the step of thinning the edge portion or severing the edge portion from the central portion of the glass ribbon within the viscous zone.

Abstract: A vaned wheel device traversed by a radial drive shaft includes radial arms, one of which contains the shaft, and stationary vanes manufactured separately from the casing and a ferrule and assembled thereto. A sleeve encompassing the shaft traverses the casing and serves to support a bearing for supporting the shaft with positional accuracy, and maintaining tightness by forming a single cavity with the radial arm cavities traversing the shaft.