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 calibrating an acoustic thermography system 10 and / or enhancing the flaw detection abilities of such a system is provided. The method allows applying a material (e.g., 103) to a specimen 12 undergoing acoustic thermography inspection. The material is thermally responsive to acoustic energy transmitted to the specimen by the acoustic thermography system. In one aspect thereof, a thermal response of the material applied to the specimen when subjected to acoustic energy is processed to determine whether the level of acoustic energy applied by the acoustic thermographic system appropriately meets a desired amount of acoustic energy for inspecting the specimen. In another aspect thereof, the thermal response of the specimen in combination with the applied material may be processed to determine whether certain types of flaws (e.g., relatively wide flaws) are actually present in the specimen or to enhance the detectability of other flaws that would only faintly show up on the infrared images.

The invention relates to an apparatus for detecting mechanoluminescent performance of a luminescent material. The apparatus comprises a dark chamber, an objective table, an ultraviolet lamp, a pressure signal monitoring system, and an optical signal monitoring system; the dark chamber comprises an internal layer dark chamber and an external layer dark chamber, the internal layer dark chamber is placed at one side of the bottom of the external layer dark chamber, and the ultraviolet lamp is arranged in the external layer dark chamber and positioned over the internal layer dark chamber; the pressure transducer is arranged in the external layer dark chamber, and opposites a force application port over the external layer dark chamber, a pressure signal output port is arranged at an outer wallof the external layer dark chamber, and the pressure transducer, a pressure transmitter and the pressure signal output port are electrically connected in order; an objective table is arranged over theinternal layer dark chamber, a sample installation groove is arranged at the objective table, the sample installation groove and the force application port over the external layer dark chamber, and the pressure transducer are coaxially arranged. The apparatus has the advantages that simultaneous and synchronous monitoring is carried out, a pressure signal of mechanical excitation force and the generated optical signal are recorded, and the monitoring result is accurate. The apparatus belongs to the technical field of detection.

An apparatus for measuring mechanoluminescent light includes a chamber defining an enclosure for a portion of a structure to be monitored and providing an opening fitted onto the structure. The structure has a mechanoluminescent material thereon. The apparatus further includes an imaging sensor positioned and configured to take images of the mechanoluminescent material and an electronic controller in wired or wireless communication with the imaging sensor, the electronic controller being capable of controlling the properties of the imaging sensor and processing the images of the mechanoluminescent material.

The invention relates to an experiment device for simulating atomic oxygen oxidation ground of a super-high temperature heat-protection material, and the device provided by the invention can be used for solving the problem that no device capable of simulating the high-temperature, low-pressure and atomic oxygen oxidation environments exists, and is suitable for simulating the atomic oxygen oxidation environment of the super-high temperature heat-protection material in different states. The experiment device provided by the invention comprises a quartz tube, an atomic oxygen generating device,an electromagnetic induction heating device and a pressure control device, wherein the output end of the atomic oxygen generating device is connected to the atomic oxygen input end of the quartz tube; the air output end of the quartz tube is connected with the air input end of the pressure control device; and the output end of the heating device is respectively connected with one input end of theinduction heating coil which is sheathed on the external wall of the middle of the quartz tube. The experiment device provided by the invention meets the experiment requirements of the atomic oxygen oxidation of the heat-protection material of a hypersonic aircraft at the temperature of 1000-2000 DEG C and the pressure of 10-5000Pa and is suitable for the oxidation action research under the atomic oxygen environment of the high-temperature material.

A method, probe, and system for detecting presence of cavitation in a fluid and measuring cavitation density and intensity of a specific locale in the fluid. A first cavitation void and associated energy perturbation, produced in a first fluid, moves within the first fluid and is received at a very thin plate, which separates the first fluid from a second fluid and is part of a light-proof chamber containing the second fluid. An energy perturbation in the first fluid is received at the thin plate and produces at least one cavitation void or associated energy perturbation in the second fluid; and the energy perturbation in the second fluid is eventually converted into an electromagnetic signal. This signal is received by a photomultiplier and converted to an electronic signal that indicates the presence of cavitation. The system can distinguish between cavitation voids produced at one location and / or time interval and voids produced at another location and / or another time interval.

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.

An apparatus for measuring mechanoluminescent light includes a chamber defining an enclosure for a portion of a structure to be monitored and providing an opening fitted onto the structure. The structure has a mechanoluminescent material thereon. The apparatus further includes an imaging sensor positioned and configured to take images of the mechanoluminescent material and an electronic controller in wired or wireless communication with the imaging sensor, the electronic controller being capable of controlling the properties of the imaging sensor and processing the images of the mechanoluminescent material.

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.

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.

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.

[Object] An electric conductivity-measuring material which emits light according to electric conductivity of a measurement object; an electric conductivity-measuring film containing the material; and an electric conductivity-measuring device and an electric conductivity-measuring method using the electric conductivity-measuring film are provided. An electric resistivity-measuring material which emits light according to electric resistivity of a measurement object when electrons are made incident; an electric resistivity-measuring film containing the material; and an electric resistivity-measuring device and an electric resistivity-measuring method using the electric resistivity-measuring film are also provided.[Solution] An electric conductivity-measuring material is used, which contains at least one of a fluorescent substance, a luminescent substance, an electroluminescent substance, a fractoluminescent substance, a photochromic substance, an afterglow substance, a photostimulated luminescent substance and a mechanoluminescent substance.

A method of using a paint sensor to observe stress distributions of a stressed substrate includes the steps of applying a composition including a paintable medium and a mechanoluminescence material to a substrate, allowing the composition to form a solid film on the substrate, allowing the substrate to be stressed following the formation of the solid film, and measuring the stress the substrate has undergone by determining the mechanoluminescence of the solid film. A composition for visualizing stress or crack distributions includes a paintable medium and a mechanoluminescence material dispersed therein.

An object of the invention is to provide a material determining apparatus for a steel product and a material determining method for a steel product which can stably and precisely determine a carbon content of the steel product. The invention provides a material determining apparatus for a steel product, which is provided with an imaging device for continuously imaging a spark generated during rubbing the steel product at a plurality of times, a detecting part for detecting spark regions and bursting spark regions from each of the imaged pictures imaged by the imaging device, a calculating part for calculating a total of the spark regions and a total of the bursting spark regions by summing up the numbers of the spark regions and the bursting spark regions detected by the detecting part with regard to each of all the imaged pictures, so as to calculate a rate of the total of the bursting spark regions with respect to the total of the spark regions, and a determining part for determining a carbon content of the steel product based on the rate, and a material determining method for the steel product.

The invention relates to an experiment device for simulating atomic oxygen oxidation ground of a super-high temperature heat-protection material, and the device provided by the invention can be used for solving the problem that no device capable of simulating the high-temperature, low-pressure and atomic oxygen oxidation environments exists, and is suitable for simulating the atomic oxygen oxidation environment of the super-high temperature heat-protection material in different states. The experiment device provided by the invention comprises a quartz tube, an atomic oxygen generating device,an electromagnetic induction heating device and a pressure control device, wherein the output end of the atomic oxygen generating device is connected to the atomic oxygen input end of the quartz tube; the air output end of the quartz tube is connected with the air input end of the pressure control device; and the output end of the heating device is respectively connected with one input end of theinduction heating coil which is sheathed on the external wall of the middle of the quartz tube. The experiment device provided by the invention meets the experiment requirements of the atomic oxygen oxidation of the heat-protection material of a hypersonic aircraft at the temperature of 1000-2000 DEG C and the pressure of 10-5000Pa and is suitable for the oxidation action research under the atomic oxygen environment of the high-temperature material.

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.

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.

An apparatus, method, and system are disclosed to analyze samples materials using triboluminescent technology. A mechanical activation knot is provided that comprises an optical window, a membrane, and a device that supplies a constant pressure of gas on the zone of activation. A sample is placed between the membrane and the optical window. The optical window is rotated along its z-axis. The friction between the sample and the optical window generates triboluminescence and associated optical emissions. Optical emissions may be distributed on the spectrum by a spectrograph, a monochromator, or a collection of filters, and then fixed by the charge coupled device, a photodiode, or a photomultiplier tube. Then, the results (data) are incorporated into different mathematical algorithms or programs with the help of computers or other computation technologies. The final results (the output) may be compared among themselves or with reference data stored in a computer's memory.

An object of the invention is to provide a material determining apparatus for a steel product and a material determining method for a steel product which can stably and precisely determine a carbon content of the steel product. The invention provides a material determining apparatus for a steel product, which is provided with an imaging device for continuously imaging a spark generated during rubbing the steel product at a plurality of times, a detecting part for detecting spark regions and bursting spark regions from each of the imaged pictures imaged by the imaging device, a calculating part for calculating a total of the spark regions and a total of the bursting spark regions by summing up the numbers of the spark regions and the bursting spark regions detected by the detecting part with regard to each of all the imaged pictures, so as to calculate a rate of the total of the bursting spark regions with respect to the total of the spark regions, and a determining part for determining a carbon content of the steel product based on the rate, and a material determining method for the steel product.