773 results about "Destructive testing" patented technology

To perform a non-destructive condition assessment of a pipe carrying a fluid, an actual value representative of the propagation velocity of an acoustic disturbance propagating between two longitudinally separated points on the pipe is determined. A corresponding predicted value for the propagation velocity is computed as a function of at least one wall thickness parameter of the pipe by using a theoretical model for the propagation of acoustic waves in the pipe that assumes said pipe has a finite wall thickness with a predetermined circumferential thickness profile. The wall thickness parameter is then computed by matching the actual value with the predicted value, for example, by substituting the actual value in a formula predicting the theoretical value.

A lamp module for use in non-destructive testing and inspection. The module including a module body with a front and rear end, and a side wall. The module body includes a mounting chamber located within the side walls. A plurality of LEDs are mounted within the chamber and oriented to so as to emit light out of the front end of the body. At least one LED emits light having a wavelength selected to produce fluorescence of an illuminated material. A fan is mounted to the body to dissipate heat generated by the LEDs when the fan is activated. Electrical connectors extend out of the body and are electrically connected to the LEDs and the fan for supplying current. The module can be installed in various structures or systems, including in a luminaire, an overhead light housing or a track light system.

PCT No. PCT/JP98/02567 Sec. 371 Date Jan. 13, 1999 Sec. 102(e) Date Jan. 13, 1999 PCT Filed Jun. 10, 1998 PCT Pub. No. WO98/57146 PCT Pub. Date Dec. 17, 1998Measurement light, which has been emitted from a Xe light source (20) and then linearly polarized by a polarizer (21), is made to be incident at a tilt angle on a region in a silicon substrate (11) with crystallinity disordered by the implantation of dopant ions. And the spectra of cos DELTA and tan psi are measured with a variation of the measurement light, where DELTA is a phase difference between respective components in p and s directions as to the light reflected as an elliptically-polarized ray, and psi is a ratio between the amplitudes of these components. By correlating in advance the spectral patterns of cos DELTA and so on with the thickness of an amorphous region through a destructive test or the like, or by paying special attention to characteristic parts of the patterns of cos DELTA and so on, the thickness or the degree of disordered crystallinity of the amorphous region is estimated. Also, since a variation in the thickness of the amorphous region can be identified based on a variation of cos DELTA before and after a heat treatment, a temperature of the heat treatment can be sensed based on the variation of the thickness. Thus, an evaluation method allowing for nondestructive estimation of the thickness and the degree of disorder of a region, having crystallinity disordered by implanting dopant ions into a semiconductor region at a high level, can be provided.

This invention relates to a method and apparatus for non-destructive testing of fruit internal quality based on optical properties. The device comprises a send unit, an analysis and process unit to evaluate the fruit referred to a stored quality prediction model, a signal control unit to send the fruit position and size information to the detection system with command format, an illumination system to provide stable and optimal-strength light, a detection system to obtain and send the transmitted spectrum information for fruit inner quality to the analysis and process unit, a fruit grade-outlet, a size detection device, and a coder. This invention improves on-line detection speed and precision.

The invention relates to a fast scanning method of pipeline drawbacks and a non-destructive detection device, which is more particularly suitable for fast scanning and non-destructive detection of drawbacks of the pipelines with insulation. The invention is composed of a guided wave sensor, a transmitting module, a receiving module, a signal generating module, a power amplifying module, a signal processing module, an A/D conversion module and an built-in computer system. The invention is suitable for comprehensive detection of drawbacks of pipelines with different diameters, detection of long distance pipelines, and detection of pipelines in inaccessible places. The invention has the advantages of fast and large-scale detection ability without contact, high efficiency; overcoming a plurality of limitations of the conventional non-destructive detection method; overcoming the restriction conditions of oil pollution, fouling, bending or heat insulation protective layer, judging and locating the drawbacks of the pipelines, reducing the maintenance range, avoiding unnecessary disassembly and replacement, reducing the intensity of artificial detection, and saving the human and material resource. In addition, the invention can achieve on-line monitoring, and evaluate the health condition of the element or predicts the service life of the element.

The invention relates to a device and a method for detecting defects of inner and outer walls of a pipeline based on three-axis magnetic flux leakage and eddy current, and belongs to the technical field of non-destructive testing. The device comprises a magnetic flux leakage detector, a data processing and storing device, a power supply, at least three odometer wheels and an eddy current detector, wherein the eddy current detector consists of an eddy current sensor and is a device used for detecting the defects on inner and outer surfaces of the pipeline. According to the device provided by the invention, a magnetic flux leakage detection method and an eddy current detection method are combined by using different characteristics of the magnetic flux leakage detection method and the eddy current detection method, so that the function of distinguishing the defect of the inner wall from the defects of the outer wall is realized; and in addition, the method provided by the invention is favorable in detection quality and simple in operation and can be widely applied to non-destructive detection of oil transmission pipelines in the industrial fields of petroleum, petrifaction and the like.

The invention discloses a cable fault detection and aging analysis method. According to the insulation resistance oscillation theory of the frequency domain, the cable fault detection and aging analysis method is characterized in that a fault location model is established by analyzing the oscillation characteristics of frequency domain impedance on the basis of oscillation wave spectrum analysis of the frequency domain impedance acquired by a non-destructive test system or a destructive test system, and then test oscillation impedance spectrum defect is compared with an internal simulation curve, so that long-distance accurate fault location can be realized, and the fault types can be also effectively distinguished. Compared with the prior art, the method not only is capable of realizing accurate multipoint positioning of faults, but also is capable of carrying out fault type recognition and insulation aging state analysis; in the whole detection and analysis processes, artificial experience is hardly depended; the method is suitable for a cable with the length of 1m-1,000km, and is especially suitable for a cable with the length of more than hundreds of kilometers.

The invention discloses a meat online non-destructive testing method and apparatus based on fusion of image and spectrum information, including a conveyor belt, a spectrum collection room, an image collection room, a camera mounted beam, an imaging source, a camera, a Y type optical fiber, a spectrograph, a data processing PC, two photosensors, a motor and a conveyor belt bracket. Through online collection of meat image and spectrum information, collecting feature information of characteristic meat quality, establishing a fused quantification prediction model based on image characteristics, spectrum characteristics and characteristics layer data of image and spectrum, using the obtained quantification prediction model to combine with quality evaluation system to establish a decision layer data fusion model based on image and spectrum for testing meat online. The invention uses complementarity and redundancy of the image information and the spectrum information to implement classification of materials and quality test during meat producing process according to optical feature of meat, which improving production efficiency.

A method of non-destructively testing a work piece is disclosed, wherein the work piece is placed within an active field of a positioning system; a frame of reference of the work piece is established based on the geometry of the work piece in the coordinates of the positioning system; the geometry of the work piece is detected by determining the position of specific transponders, which are fixed to the work piece, by the positioning system or the geometry of the work piece is detected by scanning at least parts of the contour of the work piece with a transponder of the positioning system; testing data is acquired for the work piece with a non-destructive testing probe, which comprises a transponder of the positioning system, while the position of the testing probe is recorded by the positioning system; the position of the testing probe is transformed into an intrinsic position defined with respect to the frame of reference of the work piece; and the intrinsic position of the testing probe is assigned to the testing data recorded at the respective position. Moreover, a non-destructive testing arrangement is provided.

This invention discloses a laser speckle tyre lossless detector. The detector is located in the test room of the vacuum device and is connected with a vertical and level and rotation laser speckle probes through test moving structure. Under the test prove there is tyre automatic position device to supporting and positioning and there is door in the sidewall of the test room. This invention also provides a method for lossless test and the laser speckle tyre loss detector can test the inner defection of the products and can be used in quality test of space flight field.

A method and apparatus are disclosed for predicting the service life of a metallic structure subjected to cyclic loading. Such structures experience fatigue, which can lead to failure after a number of loading cycles. The disclosed invention allows for an accurate prediction of the number of cycles to failure for a metallic structure by observing the slope of the rise in surface temperature of the structure after the cyclic loading has begun. The method of this invention provides early and accurate predictions of service life and does not require destructive testing. The method and apparatus of the present invention may be installed on working equipment, thus providing service life predictions for materials in real world use. The invention uses an empirically derived relationship that was confirmed using analytical relationships and material properties. The derived formula uses two constants that may be determined empirically using a disclosed process. The constants also may be estimated mathematically. The apparatus may include a wireless temperature sensor mounted on the metallic structure of interest and a data analysis unit to perform the needed calculations.

The invention discloses a device and method for 3D-printing part model reverse-calculating through layer-by-layer detecting and defect positioning. The device comprises a scanning galvanometer, a half transparent and half reflecting mirror, an optical filter, a laser head, a high-speed camera, a controller and the like. The scanning galvanometer is used for controlling a laser beam to melt metal powder selectively, and molten pool radiation is reflected into the high-speed camera by the half transparent and half reflecting mirror and transformed into pictorial information to be transmitted to the controller. According to the device and method for 3D-printing part model reverse-calculating through layer-by-layer detecting and defect positioning, the device conducts monitoring on powder melting in the SLM machining process in an aiming mode, and feeds back to a computer software interface, molten pool characteristics of different positions are reflected in real time, the outline of each molten layer is measured accurately, and a part model is obtained through a reverse-calculating mode; and comparing and analyzing are conducted on the model and an original three-dimensional model, errors between a metal 3D printed part and original model data at the aspects of precision and dimension is obtained; the positions and the three-dimensional shapes of internal defects in the 3D printing process can be acquired precisely, and a destructive test aiming at the part in the later period of part printing is avoided.

The invention relates to a method for quantitatively analyzing material interface properties by combining non-destructive testing and definite element modelling. In the method, by loading a composite material, a non-destructive testing system records a loading variable; and at the same time, a finite element method correspondingly simulates the whole loading process of a test piece according to intrinsic properties, modulus, tensile strength, Poisson ratio and the like of the material so as to find a simulation state corresponding to the non-destructive testing variable and further obtain comprehensive analysis results, including various physical quantities reflecting the material interface properties such as friction coefficient between fibers and a matrix, stress, straining, counterforce and the like, in the simulation state. The non-destructive testing high-precision method verifies partial parameters of finite element analysis, and the finite element analysis provides more comprehensive analysis results. The method has the advantages of high sensitivity, credible quantitative values and no need of damaging an adhesive layer.

The invention relates to a device for nondestructive testing of defects of hoxiu pears and a use method, which belong to the technical field of agricultural engineering. The device for the nondestructive testing of internal and external defects of the hoxiu pears is characterized in that the device comprises an illumination system, a transfer system, a detection system and an analytical judgment system; a camera and an image acquisition card acquire a fruit body image, and each sample is knocked by a knocking stick with a force of 15N for two times at both ends of the equator of a fruit body; and an audio signal and an image signal of the sample recorded by a sound level meter are converted and enter an industrial computer for image and acoustic analysis treatment after the fast Fourier transform to obtain a classification result of the sample. The device optimally utilizes computer vision information and vibration spectrum information to perform system identification and detection on the internal and external defects of the hoxiu pears, and has the advantages of quickness, accuracy, stability, broad identification range and the like. The device can be used for aspects of the hoxiu pears such as separation, control of processing process and the like, and is favorable for improving the sales added value of the hoxiu pears.

The invention provides a method for performing non-destructive detection on evolution of the three-dimensional carbonation depth of a cement-based material through X-ray computerized tomography and relates to a novel detection method for the carbonation depth of a cement-based material. The main principle is that: an image is reconstructed by acquiring ray attenuation information of a rotary object based on an X-ray source; a carbonized region and a non-carbonized region of the cement-based material are distinguished according to difference of gray value; and the defects in the traditional pHmethod of phenolphthalein alcohol solution are overcome. Under the condition of not damaging a test piece, the evolution process of the three-dimensional carbonation depth of the cement-based material along with the time is detected. By the method, flaw space distribution in the carbonation process, the flaw volume, the flaw closing area, the evolution law of porosity and hole dimensional distribution and the topological properties, such as connectivity, sinuosity and the like, of the hole can be achieved.

The present invention provides a method and apparatus for non-destructive testing of a seed. In various embodiments, the method may comprise vibrating the seed to orient the seed on an axis, identifying a location of a known feature of the seed, determining a sample location on the seed based on the location of the known feature, and performing a non-destructive testing procedure on the seed proximate the sample location. In one embodiment, the method may comprise removing a sample portion of the seed from the sample location without damaging the embryo of the seed. Accordingly, the viability of the seed may be maintained while allowing for subsequent testing on the sample portion of the seed.

Device for the non-destructive testing of parts of a turbomachine motor, comprising a longitudinal rod carrying at its distal end a longitudinal finger carrying a retractile or deployable flexible blade supporting an inspection probe, this blade being guided in axial translation on the finger between a retracted position in which it extends along the finger and an advanced or deployed position in which it extends in front of the finger.

The invention discloses a crop biomass nondestructive testing image acquisition and processing device and a testing method and aims at providing the crop biomass nondestructive testing image acquisition and processing device which is low in manufacturing and use costs and the testing method which is simple and convenient. The crop biomass nondestructive testing image acquisition and processing device comprises two camera height adjusting devices, a background wall, a calibration board, a lifting adjusting device, a seedling placing platform, a test bed and an image data acquisition, processing and analysis system. The image data acquisition, processing and analysis system comprises two charge coupled device (CCD) digital cameras and a computer. The camera control module of the computer is used for acquiring, displaying and storing the acquired images; and statistical analysis of the data is conducted through a biomass prediction algorithm module to finally obtain a crop biomass prediction model. The crop biomass nondestructive testing image acquisition and processing device and the testing method are suitable for the nondestructive testing of fresh biomass or dry biomass of potted crops or the biomass tracking and measurement of a single crop in the entire growth period.

A device and method for limiting damage to a semiconductor device under test when the semiconductor device fails during a high current, or high power test is provided. The occurrence of a failure of the device under test is detected, and power applied to the semiconductor device is diverted through a parallel path element upon detection of failure of the semiconductor device.

The invention discloses a non-destructive testing systems and a non-destructive testing method used for detecting a metal-rope-containing detection target through X-ray detection. The system comprises: an ultrahigh-voltage generator, an X-ray generator, a cesium iodide sensor, an optical fiber module, a controlling module, a computer, and a power supply module. The method comprises the steps that: one-dimensional energy variation data is recorded; a two-dimensional image is spliced; the image is transferred into a GPU; dark current is eliminated; gain adjustment is carried out; metal region segmentation is carried out; defect detection is carried out; the result is transferred to a computer internal memory; feature extraction is carried out; mode recognition is carried out; and the result is outputted. According to the invention, through X-ray processing, GPU calculating, and image processing algorithms, defects such as low detection precision, long feedback cycle, offline spot-check, low efficiency, and the like of other methods are solved. The system and the method provided by the invention can satisfy requirements of various terminal users such as belt manufacturers, mines, ports, power plants, steel plants, cement plants, and the like.

The invention relates to testing method and device for gear destruction, belonging to the technological field of machinery non-destructive testing. The invention provides magnetic memory testing method and device capable of being engaged with the shape of gear teeth of a gear to be tested, wherein a plurality of paths of magnetic sensors are arranged on the device and simultaneously test the stress positions of the tooth surface, the tooth root and the like; a non-contact photoelectric element is adopted as a sampling triggering device; and one testing device scans once and can simultaneously record the destructive states of two tooth surfaces and the tooth root of one gear tooth. The device has the advantages of high testing efficiency and high precision and can avoid test dead zones. The invention can ensure that the testing course belongs to non-contact testing; the device has simple structure and can be singly used for testing a single gear tooth, and a plurality of testing devices can be integrated into one and used for simultaneously testing a plurality of gear teeth; and the method meets the destructive testing requirements of the gear in the actual working environment and is a non-destructive testing method with brighter prospects in the destructive testing of the gear.