A method for examining a sample (50) including the steps of exciting a propagating mechanical deformation (2) in the sample (50) using a fluidic oscillator (10), and determining a characteristic of the mechanical deformation (2).

Described here are systems and methods for phase velocity imaging using an imaging system, such as an ultrasound system, an optical imaging system (e.g., an optical coherence tomography system), or a magnetic resonance imaging system. In general, systems and methods for constructing phase velocity images (e.g., 2D images, 3D images) from propagating mechanical wave motion data are described. The systems and methods described in the present disclosure operate in the frequency domain and can be implemented using a single frequency or a band of selected frequencies. If there are multiple mechanical wave sources within the field-of-view, directional filtering may be performed to separate mechanical waves propagating in different directions. The reconstructions described below can be performed for each of these directionally filtered components.

A measurement device includes a sensor that detects a particular substance, a storage unit that stores calibration data that indicate a relationship between a measurement value of the particular substance and an output of the sensor, and a calculation unit that calculates the measurement value of the particular substance from the calibration data based on the output of the sensor. The calculation unit produces a first waveform where a plurality of first outputs of the sensor are normalized, produces a plurality of second waveforms where a plurality of second outputs of the sensor that are included in the calibration data are normalized. The calculation unit calculates a measurement value of the particular substance based on the first waveform and the plurality of second waveforms.

Disclosed is a battery device including a battery; a plurality of sensors attached to the battery; and a transceiving circuit configured to transmit a signal received from a monitoring device to the plurality of sensors and to transmit signals received from the plurality of sensors to the monitoring device. The plurality of sensors generate surface acoustic waves (SAWs) in response to the signal received from the monitoring device, when receiving the signal from the monitoring device through the transceiving circuit, and the plurality of sensors include at least one first sensor configured to output a first signal corresponding to a SAW varied depending on a temperature of the battery; at least one second sensor configured to output a second signal corresponding to a SAW varied depending on pressure of the battery; and at least one third sensor configured to output a third signal corresponding to a SAW varied depending on an electrolyte leakage state of the battery.

A dual channel nondestructive testing method for a rock bolt and related devices includes: determining a target phase difference and an instantaneous phase difference of the first received signal and the second received signal; determining an integral instantaneous phase difference between the first received signal and the second received signal based on the target phase difference and an instantaneous phase difference; determining a length of the exposed section of the rock bolt, a length of the rock bolt and a position of a grouting defect based on the integral instantaneous phase difference, a first velocity of the acoustic signal propagating in an exposed section of the rock bolt and a second velocity of the acoustic signal propagating in an anchor section of the rock bolt.

A measurement device includes a sensor that detects a particular substance, a storage unit that stores calibration data that indicate a relationship between a measurement value of the particular substance and an output of the sensor, and a calculation unit that calculates the measurement value of the particular substance from the calibration data based on the output of the sensor. The calculation unit produces a first waveform where a plurality of first outputs of the sensor are normalized, produces a plurality of second waveforms where a plurality of second outputs of the sensor that are included in the calibration data are normalized. The calculation unit calculates a measurement value of the particular substance based on the first waveform and the plurality of second waveforms.

Methods include treating a portion of a sample composition to be tested for presence of an analyte by depleting or blocking the target analyte. The treated composition may be used to equilibrate an acoustic wave sensor prior to exposing the sensor to the untreated sample composition for analysis. By using the treated sample composition, in which the analyte is depleted or blocked, to equilibrate the sensor, the sensor may be equilibrated with a composition having a similar viscosity and non-specific binding characteristics to the untreated sample composition, which should result in improved accuracy when analyzing the analyte in the untreated sample composition.

Methods include treating a portion of a sample composition to be tested for presence of an analyte by depleting or blocking the target analyte. The treated composition may be used to equilibrate an acoustic wave sensor prior to exposing the sensor to the untreated sample composition for analysis. By using the treated sample composition, in which the analyte is depleted or blocked, to equilibrate the sensor, the sensor may be equilibrated with a composition having a similar viscosity and non-specific binding characteristics to the untreated sample composition, which should result in improved accuracy when analyzing the analyte in the untreated sample composition.

[PROBLEM] To provide a defect detection device capable of detecting not only a defect within a visible range but also a defect outside the visible range among the objects to be inspected. [SOLUTION] A defect detection device 10 includes: an excitation source 11 capable of being placed at any position on a surface of an inspection target object S, the excitation source 11 being configured to excite an elastic wave within the inspection target object S, the elastic wave being predominant in one vibration mode and propagating in a predetermined direction; an illumination unit (pulsed laser light source 13, illumination light lens 14) configured to perform stroboscopic illumination on an illumination area of the surface of the inspection target object by using a laser light source; a displacement measurement unit (speckle shearing interferometer 15) configured to collectively measure a displacement of each point in a front-back direction within the illumination area in at least three different phases of the elastic wave, by speckle interferometry or speckle shearing interferometry; and a reflected wave/scattered wave detector 16 configured to detect either one or both of a reflected wave and a scattered wave of the elastic wave, based on the displacement measured by the displacement measurement unit.

A method of detecting at least a blockage status in a porous member separating a measurement chamber of a device including a gas sensor positioned within the measurement chamber which is responsive to an analyte in an ambient environment to be sampled, includes emitting pressure waves from a pressure wave source which travel within the measurement chamber, measuring a first response via a first sensor responsive to pressure waves positioned at a first position within the measurement chamber, measuring a second response via a second sensor at a second position, different from the first position, and in fluid connection with the pressure wave source, determining the blockage status of the porous member based upon a functional relation of the first response and the second response.