47results about "Analysis by mechanical excitation" patented technology

A method of detecting defects in structures, comprising the steps of inducing mechanical energy in a structure via the emission of a broad-band acoustic signal, and capturing over a time interval a plurality of images of the structure each of the plurality of images comprised of a plurality of pixels arranged in a plurality of rows and columns each indicative of an intensity of infrared energy emitted by a portion of the structure.

A method and apparatus for inspecting an object. The apparatus comprises a wave generator and a detection system. The wave generator is positioned away from an object. The wave generator emits an ultrasonic wave in a direction towards a location on the object such that the ultrasonic wave encounters a portion of the object. The detection system is positioned at a same side of the object as the wave generator. The detection system detects a feature response of a feature within the portion of the object to the ultrasonic wave encountering the portion of the object.

A complex material, which emits light with a light hand or finger touch of a person and only when subjected to a stress, comprises stress emission particles and an elastic material. The stress emission particles such as SrAl₂O₄:Eu particles emit light when subjected to a stress. The elastic material is a soft material having a Young's modulus smaller than 10 MPa, such as silicone rubber, synthetic rubber, natural rubber, or the like. Weight percent of the particles in the complex material is from equal to or more than 10% to less than 100%, ore preferably from equal to or less more than 10% to equal to or less than 90%. The particles are preferably surface-treated by a silane coupling agent. The complex material is used as an artificial light-emitting skin or an artificial light-emitting body.

The invention relates to a preparation method for a force-induced fluorescence discolor compound (MC- I/II) with the property of multiple colors change and a preparation and an application for force-induced fluorescence discolor materials based on the compound. The synthesis routine of the compound provided by the invention is simple and effective, the prepared force-induced fluorescence discolor materials has responsivity to external force stimulation, a reversible change of blue, green and red colors is carried out under external forces at different degrees, thus the property of the emission spectrum can be effectively regulated and controlled by the external force. The external force is used as a stimulating resource for responsive fluorescence materials, the operation of regulating and controlling method is simple and easy to carry out, the adjustment of a home position can be realized, the reversibility is excellent, and can be repeatedly used. Additionally, different emitting colors can be displayed by a sample at different damage extents, thus potential application prospects in the field of intelligent materials, external force detector and damage extent detection and the like can be realized.

The invention discloses a steel scrap rating and database building system and method. The system comprises a steel scrap rating unit and a steel scrap database building unit; the steel scrap rating unit comprises a single-beam crane A, a lifting appliance, a steel unloading pit, a sliding rail, a pulley and a mechanical arm; the database building unit comprises a single-beam crane B, an electromagnetic chuck, a material yard, steel storage tanks, a weighbridge and a computer; and the steel scrap rating and database building method comprises the steps of measuring mass of steel scrap, measuringvolume of the steel scrap, testing components of the steel scrap, classifying the steel scrap and putting the steel scrap into a corresponding tank as well as building a steel scrap variety and quality database. The system disclosed by the invention judges a variety of the steel scrap by obtaining the mass of the steel scrap, estimating the size and testing components, then classifies and stacksthe steel scrap by adopting the steel storage tanks and builds a steel scrap database used for intelligent steel scrap distribution, so that steel scrap identification accuracy can be improved, burning loss of an alloy element is reduced, yield of steel scrap is improved, steel quality is improved, and smelting cost is reduced.

A method for detecting a defect in a structure member includes exciting a structure member by applying an excitation signal to the structure member, applying an optical signal to the excited structure member and capturing a reflected optical signal formed by a reflection of the applied optical signal by the excited structure member, and processing the reflected optical signal to determine one or more defects in the structure member.

A strain amount calculation system includes an imaging unit, and a strain amount calculation device that acquires an image taken by the imaging unit, measures luminescent brightness from the acquired image, calculates an amount of strain on the object caused by a load on the object, based on a temporal change in the measured luminescent brightness, and outputs information on the calculated strain amount.

Mechanoluminescent devices and articles, such as wearable articles, that include mechanoluminescent devices. The mechanoluminescent devices may have a lateral type architecture or a vertical type architecture. The mechanoluminescent devices may be sensors, including pressure sensors.

To provide a cleaning apparatus capable of cleaning substrates effectively and stably, a method for calibrating a device for measuring the concentration of a dissolved gas used in the cleaning apparatus, and a measurement method for measuring the concentration of a dissolved gas. A calibration method according to this invention is a calibration method for calibrating a measurement device for measuring a concentration of a gas dissolved in a liquid. In the calibration method, a step (S10) of varying the concentration of the gas dissolved in the liquid, and predetermining, as a reference concentration, a concentration of the gas at which an intensity of luminescence produced when the liquid is irradiated with ultrasonic waves shows a peak, is conducted. Next, a step (S20) of measuring a concentration of the gas in the liquid with the measurement device to be calibrated when the intensity of the luminescence shows a peak by irradiating the liquid with ultrasonic waves while varying the concentration of the gas in the liquid, to determine a measured value of the concentration of the gas, is conducted. A step (S30) of calibrating the measurement device to be calibrated based on the measured value and the reference concentration is conducted.

An apparatus 1 for determining a kind of a steel material detects a spark pixel from a color picked-up image 2 of a spark 19 produced when a steel material 18 is ground, and detects a pixel, in which the density of any one color component for judgment selected from among RGB color components is low, as a low-density pixel from the spark pixels. The apparatus 1 determines that the steel material is a steel material consisting of the high-strength steel if the ratio of the total number of low-density pixels to the total number of spark pixels is not lower than a threshold value for judgment, and determines that the steel material is a steel material consisting of the ordinary steel if the ratio is lower than the threshold value for judgment.

A pellicle is proposed in which the agglutinant layer which enable the pellicle to be adhered to a photomask is doped with a mechanoluminescent material so that the uniformness of the thickness of the agglutinant layer can be confirmed, when the pellicle is adhered to the photomask, by observing visually or by CCD camera for any irregularity in the pattern of the light emitted from the agglutinant layer.

The present invention relates to a microdisk laser having characteristics of unidirectional emission and an ultra-high quality factor and also a microdisk laser composed of four circular arcs and configured to emit light in one direction in a resonance mode having the form of a whispering gallery mode formed by total reflection.

A hyper-velocity impact sensor including an optical fiber probe that transmits an optical pulse generated during impact with an object, a spectroscopic analyzer that receives the optical pulse and produces spectral information about the optical pulse, a connecting optical fiber configured to convey the optical pulse between the optical fiber probe and the spectroscopic analyzer, and at least one processor coupled to the spectroscopic analyzer and configured to receive and analyze the spectral information to determine at least one chemical element or compound contained in the object.