135 results about "Diffractometer" patented technology

The invention relates to the technical field of process data analysis and processing, and discloses a coal-based solid waste recycling full-process intelligent management and control platform and a digital twin system. The platform is characterized in that an identification module identifies a coal-based solid waste mineral phase through a ray diffractometer to obtain mineral composition classification data; the construction module constructs a digital twinborn model based on the classification data, simulates a dissolution reaction, and obtains weathering soil formation process data; the establishment module establishes a pollutant migration prediction model according to the process data to obtain environmental risk data; the optimization module optimizes the risk data through an improved particle swarm-genetic hybrid algorithm to obtain a resource path scheme; and the adjusting module adaptively adjusts the process parameters based on the path scheme to obtain a whole-process management and control instruction. The problems that accurate mineral phase recognition and intelligent classification are lacked in the coal-based solid waste recycling process, and a dynamic prediction model cannot be constructed and a weathering soil forming process cannot be simulated in real time based on mineral composition data are solved.

The invention relates to the technical field of hydraulic test of nickel alloy pipes, and discloses a hydraulic test system for a thin-wall nickel alloy pipe. According to the system, in the axial loading state of the thin-wall nickel alloy pipe, a closed water pressure cavity is established through an annular sealing clamp, and then strain distribution data on the surface of the pipe body is collected through a distributed optical fiber sensor array. And constructing a three-dimensional stress field reconstruction model based on the acquired strain distribution data, calculating an equivalent plastic deformation threshold value of the pipe body under different water pressure gradients, adjusting a water pressure loading curve slope parameter according to the equivalent plastic deformation threshold value, and generating a dynamic water pressure loading instruction. And the high-frequency pressure pulse generator executes the instruction, synchronously triggers the X-ray diffractometer to collect lattice distortion data of the tube body, inputs the data into the material microscopic damage evolution model, and outputs a microscopic defect spatial distribution map. And finally, material constitutive parameters of the three-dimensional stress field reconstruction model are corrected based on the atlas, closed-loop feedback control is formed, and multi-dimensional data acquisition and accurate management and control of the thin-wall nickel alloy pipe hydrostatic test are achieved.

The invention relates to the technical field of grading gangue selection of coal gangue, in particular to a grading gangue selection method of coal gangue, which comprises the following steps: acquiring mineral texture data through a multispectral imaging device, analyzing the spatial distribution of aluminum and silicon elements in combination with an X-ray diffractometer, and generating a three-dimensional component map through spatial registration and fusion with infrared heat value data; impurities are dynamically removed through sulfur element spectrum detection, and the air pressure and the material flow of winnowing equipment are adjusted by matching roasting process parameters; components of the sorted waste are analyzed through an X-ray fluorescence spectrometer, particle size data are obtained through a laser particle analyzer, a genetic algorithm is input to iteratively optimize detection channel combination and sampling density, a resource distribution instruction is generated, and equipment parameter correction is fed back. According to the method, aluminum-silicon ratio critical value accurate identification, sorting parameter dynamic adaptation and waste recycling path optimization are realized, and the problem of overburning caused by insufficient quantitative analysis of element distribution in the prior art is solved.

The invention relates to the technical field of image processing, and discloses an AI-based lithium manganate process parameter regulation and control method and system. The method comprises the following steps: collecting lithium manganate preparation whole-process technological parameters through an infrared temperature measurement array, a pH sensor and an electrochemical workstation to establish a database, training and generating a technological parameter predictor by using an Actor-Critic deep reinforcement learning algorithm, quantifying a deviation degree output early warning level based on a fuzzy comprehensive evaluation algorithm, and determining the lithium manganate preparation whole-process early warning level according to the deviation degree output early warning level. And starting a self-adaptive PID control algorithm to generate a multi-equipment coordination control instruction set, synchronously driving an inclined mixer, a roasting kiln fan and an electrolytic bath temperature control system to adjust, detecting the product quality through an X-ray diffractometer, and feeding back an optimization control instruction. According to the invention, the process parameter control precision and the product quality stability in the lithium manganate preparation process are improved.

The utility model discloses an X-ray diffractometer sample table suitable for a large-thickness sample, belongs to the technical field of metal material performance detection equipment, and is used for detecting the large-thickness sample. According to the technical scheme, a base is a rectangular flat plate, the lower end of a gear disc fixing rod is perpendicularly connected with the base, the upper end of the gear disc fixing rod is rotationally connected with a gear disc, a rotary knob is fixed to one side of the gear disc, the lower end of a rack sleeve is perpendicularly connected with the base, and the lower portion of a lifting rack is inserted into an opening in the upper end of the rack sleeve; the upper portion of the lifting rack is meshed with gear teeth of the gear disc, the upper end of the lifting rack is connected with the bottom face of the sample platform, a jackscrew hole is formed in the side wall of the upper portion of the rack sleeve, and the front end of a jackscrew penetrates through the jackscrew hole to be connected with the side wall of the lifting rack in an abutting mode. The device is simple in structure, convenient to use, simple, convenient and rapid to disassemble and assemble, solves the problem of thickness limitation of a test sample of a sample table of equipment, and can realize detection of a large-size sample.

The invention relates to an X-beam collimator for a crystal diffraction experiment. A main body of the X-beam collimator is of a stepped structure comprising an upper end thin part and a lower end thick part; the fixing hole is formed in the upper end thin part of the main body and is fixedly connected with an external driving motor to drive the main body to move; the loading hole is formed in the thick part of the lower end of the main body and is a cylindrical blind hole; the light beam control piece is of a cylindrical structure and is made of platinum iridium alloy, a small round hole is formed in the center of the light beam control piece, and the light beam control piece is installed in the loading hole in a matched mode. The light-transmitting hole is formed in the bottom of the loading hole, the axis of the light-transmitting hole is collinear with the light path axis of the coaxial microscope and the diffractometer, and the light-transmitting hole is used for allowing the X beams screened by the small hole to pass through. The fixing holes are fixedly connected with the motor, so that the motor can drive the main body to move; light beam control sheets with different light beam size control capabilities are loaded through the loading holes; the X-ray beam passes through the collimator through the light hole, the structure is simple, the size and the mass are small, and rapid collimation and size control of the X-ray beam can be achieved.

The utility model relates to the field of optical detection equipment, in particular to an X-ray diffractometer sample table clamp which comprises a boss arranged on the inner side wall of a machine body, an elastic piece is arranged at the position, opposite to the lower portion of the boss, in the machine body, one end of the elastic piece is used for abutting a slide against the lower surface of the boss, and the other end of the elastic piece is arranged on the inner side wall of the machine body. A pull rope is adhered to one end, opposite to the slide, of the elastic sheet, and a pull head is adhered to the bottom end of the pull rope. The slide clamping device has the effect of conveniently clamping the slide.

The application discloses an X-ray diffractometer high-temperature in-situ detection device, a base lifting assembly is installed on the diffractometer, a tank body assembly rear end is connected with a lifting pad in the base lifting assembly, and a tank body assembly front end is connected with an upper cover in a tank body cover assembly; a heat preservation cavity assembly is arranged in the tank body assembly; a heating chamber assembly is arranged in the heat preservation cavity assembly, and a connecting pipe at a tail of the heating chamber assembly is connected with a gas distribution connector in the tank body cover assembly; sample entering holes for sample passing are arranged at lower ends of the tank body assembly and the heat preservation cavity assembly; the tank body and the tank body cover are provided with cooling water channels; a sample holder assembly is fixed at the tank body assembly lower end, and a measured sample is placed in a sample holder in the sample holder assembly and is sent into the heating chamber assembly; the application has novel structure, stable performance and convenient use, and greatly improves the temperature range of the heating chamber. Since the heat preservation cavity is in a sealed form, the heating speed is fast, and heat preservation is long-lasting.

The invention provides a sample table for a table type X-ray diffractometer, and relates to the field of diffractometers, the sample table comprises a sample rack, a sample table structure is inserted in the sample rack, the sample rack is provided with a lifting locking part used for limiting the sample table structure, the lifting locking part comprises a first T-shaped tube mounted at the bottom of the sample rack, and the first T-shaped tube is provided with a second T-shaped tube; a second T-shaped pipe is inserted into the bottom end of the first T-shaped pipe, a second T-shaped rod is connected to the second T-shaped pipe in a penetrating mode, a first T-shaped rod is connected to the top end of the second T-shaped rod, the top of the first T-shaped rod penetrates through the sample frame and extends into the sample frame, and the top of the first T-shaped rod makes contact with the bottom of the sample table structure. According to the sample table structure, the lifting locking part is arranged, the lifting locking part can complete locking of the sample table structure in a mode of rotating after lifting, the lifting locking part can complete unlocking action by moving downwards and resetting after rotating, operation is convenient and fast, use is facilitated, and the abrasion problem of traditional screw adjustment is avoided.

This invention discloses an apparatus and method for measuring the residual stress of rock mass under non-uniform temperature, including a sample cell, a heating and temperature control system, and an X-ray diffractometer system. The sample cell includes an upper base and a lower base, and the rock mass sample to be tested is placed in the upper base. The heating and temperature control system includes a thermocouple, a heating element, and a PID temperature controller. By changing the non-uniform temperature evolution process during X-ray diffraction testing through the heating and temperature control system, the non-uniform temperature environment of the rock mass under real working conditions is simulated. In-situ testing of the rock mass under non-uniform temperature conditions is performed using the X-ray diffractometer, and diffraction peak data of the rock mass at each dipping angle ψ is collected using the dipping method, thereby determining the residual stress evolution process of the rock mass at different temperatures. Simultaneously, the rock mass sample can be subjected to stress-relief annealing treatment through the heating and temperature control system to study the changes in residual stress after stress-relief annealing treatment under different non-uniform temperature fields.

The invention provides a material surface and interface damage in-situ characterization system for multi-factor coupling corrosion, and relates to the technical field of in-situ detection equipment. The technical problem that in the prior art, in-situ microscopic observation cannot be conducted on a material surface interface in a simulated service environment, and the dynamic evolution rule of surface interface corrosion behaviors in the same area in the corrosion process cannot be accurately tracked is solved. According to the material surface and interface damage in-situ characterization system for multi-factor coupling corrosion, simulation of heat, salt and force multi-field coupling corrosion is achieved through a salt mist generating device, a multi-point heating module and a corrosion-resistant loading table, an X-ray diffractometer is allowed to conduct in-situ diffraction testing through an X-ray incident window and an X-ray emergent window, corrosion product in-situ phase analysis under the simulated working condition is achieved, and in-situ phase analysis of the corrosion product under the simulated working condition is achieved. And the corrosion-resistant loading table can enter the electron microscope for micro-area structure and micro-area component analysis, the multi-point heating module can keep the consistency of the sample state in the X-ray diffractometer and the electron microscope, and different heating sites can be used for heat, salt and force environment experiments.

The present invention provides a silver electrode having smaller change in resistivity due to temperature change as compared with the related arts, and a method of manufacturing the silver electrode. The silver electrode is configured to have one peak in a range of a diffraction angle 2θ=37.5° to 38.3° in an X-ray diffraction pattern measured by an X-ray diffractometer using a CuKα1 ray, and a change rate of the diffraction angle of the peak after heated at 150° C. for 30 minutes is less than or equal to 0.5%. In this way, the silver electrode has smaller change in resistivity due to temperature change as compared with the related arts.

An X-ray diffractometer sample stage for bulk solid samples is disclosed. In use, the base is moved to the designated position, and the bulk solid sample is placed on the sample stage within the sample placement groove and secured with modeling clay. Since there are three wedge mechanisms arranged in a triangle, based on the principle that three points not on the same straight line can define a plane, the three wedge mechanisms can support the sample stage. Furthermore, because the wedge mechanisms drive the bottom of the sample stage and can convert horizontal movement into vertical movement, the corresponding parts of the sample stage can be raised or lowered by the wedge mechanisms, thereby adjusting the height and angle of the sample stage. This eliminates the need for cutting or processing the bulk solid sample, simplifying operation. When the sample quantity is small, there is no need to lay a large amount of modeling clay on the sample stage, making it more convenient to use. In summary, by using this sample stage, the depth and angle of the sample stage can be adjusted.

The invention aims to establish a synergistic catalytic system in which catalysts cannot coexist. The amide chiral catalyst is prepared through a series of synthesis. The hollow mesoporous COF-carboxylic acid / chiral amide multi-catalyst is prepared by a hydrothermal method. The morphology and the structure of the material are characterized by using a scanning electron microscope, a transmission electron microscope, an X-ray diffractometer, a specific surface instrument, an infrared spectrometer and the like, an asymmetric tandem-addition reaction is catalyzed to construct a chiral acetal compound, high performance liquid chromatography analysis is combined, and multiple catalysts are continuously recycled. Results show that the hollow mesoporous COF-carboxylic acid / chiral amide multi-catalyst not only has good morphology, excellent specific surface area and high porosity, but also enables contradictory catalysts to coexist for synergistic catalysis. The catalyst can be used for rapidly catalyzing an asymmetric tandem-addition reaction, high selectivity of ee = 99% and high yield of 98% are achieved, and the catalyst can be repeatedly used for 10 times. The method is green, environment-friendly, low in cost and suitable for concerted catalysis of catalysts which cannot coexist.

The invention belongs to the related technical field of diffractometer corollary equipment, and discloses an X-ray diffractometer sample stage compatible with different manufacturers, which comprises three structural layers in vertical layering and splicing design, the X-ray diffractometer and goniometer butt joint layer is used for being in butt joint with X-ray diffractometers and goniometer of different manufacturers, and meanwhile splicing with the core function execution layer is achieved through a conical surface positioning pin, an annular magnetic attraction groove and the like. An independent driving and control module is arranged in the core function execution layer and is used for independently completing the functions of translation, rotation, inclination angle adjustment and the like; the sample bearing and fixing layer is provided with a plurality of sample clamps matched with samples in different forms. The technical problems that mechanical interfaces of sample tables of different manufacturers are not uniform, control protocols are not compatible, and recalibration is needed after replacement are effectively solved, and the sample table has the advantages of being compact in structure, convenient to control, high in switching efficiency, accurate and reliable in positioning, capable of achieving plug and play and the like.

The invention provides a material surface and interface damage in-situ characterization transit warehouse for multi-factor coupling corrosion, relates to the technical field of in-situ detection equipment, and aims to solve the technical problems that a load and a high-temperature sample cannot be directly conveyed into an electron microscope from an X-ray diffractometer and salt mist on the surface of the sample easily causes corrosion damage to the electron microscope in the prior art. According to the material surface interface damage in-situ characterization transfer bin for multi-factor coupling corrosion, a pre-pumping chamber is independent from an electron microscope, a transfer chamber and the pre-pumping chamber are isolated through a gate valve, a rail assembly, a vacuum pump set and a nitrogen blowing device are integrated, and a transfer channel special for corrosion surface interface damage in-situ characterization is constructed; the corrosion-resistant loading table clamps a sample to move through the track assembly, the nitrogen blowing device is used for rapidly drying moisture on the sample and preventing salt mist from damaging the electron microscope when the sample enters the electron microscope, and the vacuum pump set can vacuumize the pre-vacuumizing chamber, so that the corrosion-resistant loading table can clamp the sample to enter the electron microscope.

Cell parameters of the crystal compound are as follows: diffraction data are collected in an omega-theta scanning mode by using MoK alpha rays monochromatized by a graphite monochromator on an Oxford X-ray single crystal diffractometer at the temperature of 273 k, and the crystal compound is characterized in that the crystal belongs to a triclinic system, P-1; the cell parameters are as follows: alpha is equal to 79.857 (3) degrees; beta is equal to 87.082 (3) degrees; gamma is equal to 87.829 (3) degrees; the synthesis method of the crystal chlorine compound (I) comprises the following steps: weighing 0.02 35 g of benzophenone hydrazone and 0.6720 g of 1.0 g of 7-chloroisatin and acetic acid ketone monohydrate complex, putting into a 150mL flask, adding 100.0 mL of chlorobenzene as a solvent, stirring at room temperature for 48 hours, carrying out column chromatography separation, eluting with petroleum ether / dichloromethane (1 / 1), and carrying out vacuum drying to obtain the crystal chlorine compound (I). And naturally volatilizing the collected front component points to obtain the target crystal compound I, namely the 6-bromo-3-diphenylmethylene indoline-2-ketone crystal. The application of the crystal chlorine compound (I) is that the crystal chlorine compound (I) has a relatively strong inhibition effect on epidermophyton flocculent, and the IC50 value of the crystal chlorine compound (I) is 0.063 + / -0.008.

The utility model relates to the field of X-ray diffraction, in particular to a special fixture for sample detection of an X-ray diffractometer, which is used for being matched with the X-ray diffractometer to carry out phase analysis and residual stress test and is suitable for residual stress detection of workpieces with square and cylindrical structures. The utility model aims to provide a special fixture for sample detection of an X-ray diffractometer. The fixture has the characteristics of simplicity in operation and high positioning precision. According to the technical scheme, the clamp special for sample detection of the X-ray diffractometer is characterized by comprising a base, a limiting plate fixed to the top of the base, a supporting plate located between the base and the limiting plate in a liftable mode, and a spring pushing the supporting plate to ascend so that a workpiece can be clamped and fixed between the supporting plate and the limiting plate; a detection cavity allowing the supporting plate to ascend and descend and containing a workpiece is formed in the base, the limiting plate is provided with a detection hole allowing X-rays to irradiate the workpiece, and the bottom face of the limiting plate serves as a positioning face for determining the highest point position of the workpiece.

The utility model relates to the technical field of clamping testing, in particular to an irregular sample clamping device which comprises a sample preparation bottom plate, a supporting sleeve and a clamping piece, the sample preparation bottom plate is used for placing an irregular sample to be tested, the supporting sleeve is arranged on the sample preparation bottom plate, the irregular sample to be tested is located in the supporting sleeve, the clamping piece is detachably connected to the supporting sleeve, and the clamping piece is arranged on the supporting sleeve. The clamping piece comprises a fixed clamping part and a movable clamping part, and is suitable for clamping the irregular sample to be detected by moving the movable clamping part towards the fixed clamping part. The clamping device disclosed by the utility model can be used for preparing and clamping a sample in the process of testing the irregular sample by the X-ray diffractometer, and the to-be-tested surface of the irregular sample to be tested can be positioned at the central position of the clamping device through the clamping of the clamping device, so that the requirement of the X-ray diffractometer on the horizontal position of the sample is met; the XRD sample of irregular materials can be conveniently and rapidly clamped, the standard degree of the sample preparation process is improved, and personal errors are reduced.

The present invention addresses the problem of providing a solid-state battery and active material capable of suppressing decreases in the recovery capacity of the solid-state battery and capable of suppressing increases in the resistance of the solid-state battery, even if the solid-state battery is stored in a high-temperature environment in a charged state. A solid electrolyte, according to the present invention, contains a lithium (Li) element, a phosphorus (P) element, a sulfur (S) element, an oxygen (O) element, and a halogen (X) element. The molar ratio of the halogen (X) element to the phosphorus (P) element is less than 1.2. The molar ratio of the oxygen (O) element to the phosphorus (P) element is greater than 0.001 but less than 1.0. According to the present invention, the X-ray diffraction pattern measured by an X-ray diffractometer using Cu Kα radiation has diffraction peaks at a position of 2θ=15.4°±1° and at a position of 2θ=17.8°±1°.

The invention discloses a method for rapidly detecting the activity of metakaolin using XRD, comprising the following steps: placing a metakaolin sample in an X-ray diffractometer and performing an XRD slow scan; importing the data measured by the XRD diffractometer into an XRD analysis software, performing peak search and back-sampling to obtain peak search data; calculating the ratio R of the diffraction peak height to the corresponding half-peak width based on the obtained peak search data; summing the areas of all diffraction peaks with R values ​​below 1000 to obtain ∑S 衍射峰 Finally, the same test and analysis conditions were used to calculate the ∑S of different metakaolin powders. 衍射峰 , according to ∑S 衍射峰 The activity of different metakaolin powders is evaluated by measuring the value of XRD. This invention proposes for the first time a method for rapidly detecting and evaluating the activity of metakaolin using XRD. This method is simple and efficient and can provide a new approach for the efficient detection of metakaolin activity.

The utility model relates to the technical field of bio-based material detection, and discloses a bio-based material detection device which comprises a base, a supporting rod is arranged on the base, an X-ray diffractometer and a detection probe are arranged on the supporting rod, the supporting rod is arranged in the middle of the base, a supporting part is coaxially arranged on the outer side of the supporting rod, and the X-ray diffractometer and the detection probe are arranged on the supporting rod. A detection plate is rotationally arranged on the supporting part, the detection plate is of a disc-shaped structure, and a plurality of detection grooves are formed in the detection plate at equal intervals in the circumferential direction; the detection probe corresponds to one of the detection grooves below in an initial state, and the detection probe detects materials in different detection grooves in sequence along with rotation of the detection plate during working; the device is simple in structure, flexible and convenient to use, low in space requirement, capable of realizing continuous detection of multiple groups of bio-based materials, and high in practicability.

The invention discloses a concentric ring roll sample table for a wide-angle X-ray diffractometer and a use method, and belongs to the technical field of X-ray diffraction analysis equipment.The concentric ring roll sample table comprises a base and a concentric ring sample table body arranged on the base, and the concentric ring sample table body comprises an external supporting seat and an internal rotating circular ring sleeve; the rotary circular ring sleeve is rotatably connected to the supporting seat through an angle adjusting mechanism, and the rotation axis of the rotary circular ring sleeve is configured to coincide with the direction of an incident X-ray beam, so that a sample fixed on the rotary circular ring sleeve can roll and rotate around an incident light path. Through the unique concentric ring design, it is ensured that the rotation axis of a sample coincides with an X-ray light path, the position of a measured point of the sample is constant in the rotation process, the side inclination range of 60 degrees is achieved through cooperation with the fine adjustment bolt, the measurement blank between vertical transmission and grazing incidence is filled, and the measurement precision is improved. And a key tool is provided for all-dimensional structure characterization of anisotropic materials.

The invention discloses a red and green dual-wavelength laser alternate shock peening method, and belongs to the field of laser shock peening. The method comprises the following steps: S1, taking a (2d-eta d) * (2d-eta d) square region as a minimum unit, and dividing a strengthening region into n strengthening units; wherein d represents the diameter of the light spot, and eta represents the overlap rate; s2, a white light interferometer and an X-ray diffractometer are adopted to repeatedly carry out roughness and residual compressive stress detection on the strengthened unit area, and an impact scheme is selected based on a detection result; and S3, when the roughness and the residual compressive stress of the current strengthening unit reach expected threshold values, the impact device is positioned to the next strengthening unit, the impact process in the S2 is repeated until the area, needing to be strengthened, of the whole workpiece is completed, and the laser is turned off. The technical problem that the surface integrity and the residual stress regulation and control are difficult to consider at the same time by single wavelength is solved.

The invention discloses a method for determining the original austenite grain size of low-alloy quenched steel by an X-ray diffractometer method, and belongs to the technical field of metal material detection. According to the method provided by the invention, nondestructive testing is realized by establishing the quantitative relation model of the martensite phase change product and the original grain size, chemical erosion and mechanical damage of a traditional metallographic method to a sample are avoided, and the problems of large destructiveness, complex operation, limited application range and the like of a traditional detection means are solved; the method can be directly used for quality inspection of finished products, and a new technical means is provided for whole-process quality control of steel products. An optimized diffraction peak analysis algorithm is combined, so that the measurement precision is remarkably improved; the detection process is simple, convenient and efficient, the single detection time can be shortened to be within 30 minutes, the detection efficiency is greatly improved, and the method is particularly suitable for rapid detection requirements of batch samples.

In some embodiments, an X-ray system comprises a work-station and a mammography apparatus. The mammography apparatus can comprise: a breast positioning area; an absorption contrast imaging apparatus; and a diffractometer for analyzing structure of tissue within a breast. The absorption contrast imaging apparatus and the diffractometer can be configured to move in order to interchangeably align with the breast positioning area. The work-station can be configured to control the mammography apparatus, and to process data received from the mammography apparatus. In some embodiments, a method of controlling an X-ray system comprises: measuring the denseness of the breast tissue using an absorption contrast imaging apparatus; processing the absorption contrast imaging measurement results using the work-station to determine coordinates of potential cancer sites; performing measurements at the coordinates of the potential cancer sites using the diffractometer; and processing the diffractometer measurement results to perform diagnostics.

The invention relates to a compact high-magnification stretching temperature control testing device for a force-induced phase change material, which comprises a fixed part, and a driving mechanism is arranged at the bottom of the fixed part; the heating assembly is arranged at the top of the fixing part and is used for heating a sample; the stretching assembly comprises a tension sensor mounting block, a sample clamp arranged at the top of the tension sensor mounting block and a tension sensor arranged at the bottom of the tension sensor mounting block, the tension sensor mounting block and the tension sensor are arranged on a mounting plate, and the mounting plate is connected with the driving mechanism; the butt joint support is arranged on the lower portion of the fixing piece and used for being in butt joint with a confinement platform including an X-ray diffractometer. The device can be matched with an X-ray diffractometer to carry out in-situ XRD (X-Ray Diffraction) test so as to realize in-situ observation of structural property change in the phase change process of the force-induced phase change material.

The application discloses a cable sheath aging evaluation method and related device, comprising: intercepting a test sample from a cable sheath to be evaluated, wiping the test sample with alcohol and keeping it still; testing the test sample by using a RIGAKU-X ray polycrystalline diffractometer, recording an X ray diffraction pattern of the test sample, obtaining two crystalline diffraction peak intensities D fi and D si of a diffraction curve and angles θ fi and θ si corresponding to the two peaks according to the X ray diffraction pattern; substituting the two crystalline diffraction peak intensities D fi and D si and the angles θ fi and θ si corresponding to the two peaks into a diffraction evaluation factor calculation formula to obtain a diffraction evaluation factor; and analyzing an aging state of the cable sheath to be evaluated based on the diffraction evaluation factor. The application can conveniently, efficiently and safely detect and evaluate the aging degree of a 110kV XLPE cable sheath, and avoids damage and grounding faults caused by serious aging of the cable sheath.

The invention discloses a method for measuring the original austenite grain size of high alloy steel through an X-ray diffractometer method, and belongs to the technical field of metal material detection. According to the method provided by the invention, nondestructive testing is realized by establishing the quantitative relation model of the martensite phase change product and the original grain size, chemical erosion and mechanical damage of a traditional metallographic method to a sample are avoided, the method can be directly used for quality inspection of a finished product, and a new technical means is provided for whole-process quality control of a steel product; an optimized diffraction peak analysis algorithm is combined, so that the measurement precision is remarkably improved; the detection process is simple, convenient and efficient, the single detection time can be shortened to be within 30 minutes, the detection efficiency is greatly improved, and the method is particularly suitable for rapid detection requirements of batch samples.

The present disclosure provides systems and methods for determining one or more diagnostic indicators using X-ray diffraction (XRD). In some embodiments, the techniques described herein relate to a system including: a fixture configured to position a region of skin of a patient within a measurement region; an X-ray source coupled to the fixture and configured to emit an X-ray beam that overlaps with the measurement region; an X-ray receiver coupled to the fixture, the X-ray receiver including a coordinate-sensitive digital detector of X-rays; and one or more processors coupled to the X-ray receiver. The one or more processors can be configured to collect XRD data from the X-ray receiver, to process the XRD data, and to determine a diagnostic indicator for assessment of a physiological or pathological condition based on the processed XRD data.