This application relates to an apparatus and method for detecting a microcrack using orthogonality analysis of a mode shape vector and a principal plane in a resonance point. The apparatus may include a measurement unit comprising multiple sensors and configured to measure whether a crack exists at a measurement target, and an analysis unit configured to determine whether a crack exists, on the basis of measurement values of the respective sensors. The measurement unit includes a fixing jig configured to fix the measurement target, an excitation means configured to apply a predetermined impact to the measurement target, and multiple acceleration sensors attached at predetermined locations on the measurement target. The analysis unit may further calculate frequency responses of the measurement target to the impact applied by the excitation means, and determine whether a crack exists by analyzing the number of resonance points and independence of the resonance points.

Provided is an examination technique that can quickly and reliably examine, from the outside of a container, whether a liquid which fills the container contains an explosive or the like, without being influenced by such things as the light transmissivity or size of the container, or the amount of liquid remaining in the container or the position of a label. In the present invention, a liquid examination device is formed by integrating the following: a near infrared-light examination device that examines whether a liquid which fills a container contains an explosive, an explosive raw material, and/or an illicit drug by projecting near infrared light into the liquid from outside of an optically transparent container, receiving the near infrared light which passed through the liquid or the near infrared light which was scattered by the liquid, and analyzing the absorption spectrum of such light; and an ultrasonic wave examination device that examines whether a liquid which fills a container contains an explosive, an explosive raw material, and/or an illicit drug by receiving the reflected waves of ultrasonic waves projected towards the liquid from outside of a metal container, and analyzing the ultrasonic wave speed of such waves.

The present invention relates to a method for identifying material types of spatial objects characterized in that the method comprising obtaining an acoustic signal from each identified object by deforming the objects mechanically, recording said acoustic signal and comparing it to an acoustic model being obtained on the basis of analysis of reference objects of multiple material types. The present invention also relates to a device for identifying material types of spatial objects, comprising a deformation chamber (K), a mechanical deformation system (F), at least one electro-acoustic transducer (1), an acoustic signal recording assembly (2) and a data processing unit (3) with installed acoustic model being obtained on the basis of analysis of reference objects of multiple material types.

A multimode ultrasonic probe tip and transducer integrated into a micro tool, such as a nano indenter or a nano indenter interfaced with a Scanning Probe Microscope (SPM) is described. The tip component may be utilized to determine mechanical properties or characteristics of a sample, including for example, complex elastic modulus, hardness, friction coefficient, and strain and stress at nanometer scales and high frequencies. The tip component is configured to operate at multi-resonant frequencies providing sub-nanometer vertical resolution. The tip component may be quasi-statistically calibrated and contact mechanics constitutive equations may be utilized to derive mechanical properties of a sample. Contact mechanical impedance and acoustic impedance may also be compared.

According to one embodiment, a control method includes setting a transmission angle of an ultrasonic wave to a standard angle. The control method further includes transmitting an ultrasonic wave at the set transmission angle and detecting an intensity of a reflected wave from an object. The control method further includes calculating a tilt angle based on a gradient of the intensity. The tilt angle indicates a tilt of the object. The control method further includes resetting the transmission angle based on the tilt angle.

Embodiments of the present invention provide systems and methods for tagging and acoustically characterizing containers.

A method of identifying a bond boundary between a sound bond and weak bond in a multilayer article may include determining a plurality of positions on a surface of the article; for each position of the plurality of positions, obtaining a full-wave, time domain waveform of ultrasonic waves reflected from the article; and, for each pair of adjacent positions among the plurality of positions, determining whether there is a bond boundary between a first position and a second position based on a comparison of a waveform characteristic of a first waveform generated at the first position and the waveform characteristic of a second waveform generated at the second position; and in response to a determination that there is a bond boundary between the first position and the second position, determining a boundary position based on the first position and the second position and memorializing the boundary position.

A system for detecting the presence of bubbles in a solution includes an ultrasonic receiver, receiving a pair of signals having different frequencies after passage through the solution, and a computing unit. The computing unit computes a signal value for each of the signals, the signal value representing a defined signal property, compares the signal values for the signals with each other and/or each with a predefined reference value, and computes a deviation of the signal values from each other and/or between the signal values and the predefined reference value. The computing unit generates a bubble confirmation signal that confirms the presence of bubbles in the solution if the deviation is greater than a predefined threshold value.

The present disclosure provides methods and systems for the characterization of a microtexture of a sample, component, or the like. The methods may include methods of determining a service life limiting region of a component, determining a treatment method for a component, and/or selecting components from a batch of components for use in production. The characterization may include calculating a microtexture level indicator from ultrasonic C-scan images for various samples, regions, components, or the like. The microtexture level indicator may include at least one of an average peak factor, a standard deviation of peak amplitude, and/or a baseband bandwidth.

A quality determination system of a jelly for swallowing and a quality determination method of a jelly for swallowing that can non-invasively determine quality of a jelly for swallowing based on an ultrasound image are provided. A quality determination system of a jelly for swallowing includes an ultrasound probe, an image generation unit that generates an ultrasound image from a reception signal obtained by transmitting and receiving an ultrasound beam to and from a subject using the ultrasound probe, an image analysis unit that acquires a first air bubble pattern in a jelly for swallowing by analyzing the ultrasound image generated in a state where the ultrasound probe is in contact with an outer surface of an unopened package in which the jelly for swallowing including air bubbles is sealed, and a quality determination unit that determines quality of the jelly for swallowing based on the first air bubble pattern.