Oleg Figovsky

Main nondestructive techniques that are used at nuclear power plants for the fuel assembly integrity evaluation are ultrasonic measurements, eddy current measurements, radiographic testing, acoustic techniques and others. Approximately 273 patents found in the Worldwide database for nondestructive testing nuclear facility; maximum patents belongs authors from China - us you may see below.

CN119811716 (A) - Nondestructive testing device and method for control rod assembly absorber cladding of pressurized water reactor nuclear power station

The invention provides a pressurized water reactor nuclear power plant control rod assembly absorber cladding nondestructive testing device and method. The device comprises a control rod guide device, an ultrasonic testing probe rotation driving motor, a guide key, an ultrasonic testing probe assembly, an eddy current testing probe assembly, an ultrasonic testing centering device, a mounting bottom plate and a hexagonal positioning frame. And a base of the ultrasonic detection probe rotation driving motor is mounted on the mounting bottom plate. And the guide key is arranged on the ultrasonic detection probe rotation driving motor. And the ultrasonic detection probe rotation driving motor is in driving connection with the ultrasonic detection probe assembly. And the ultrasonic detection centering device is arranged above the ultrasonic detection probe assembly. The ultrasonic detection probe assembly and the eddy current detection probe assembly are located on different layers. Through combination of ultrasonic detection and eddy current detection, the problem that no nondestructive detection device suitable for the control rod assembly absorber cladding of the pressurized water reactor nuclear power station for detecting the defects of the control rod cladding exists at present is solved.

CN119993582 (A) - Nondestructive testing device for internal structure of containment vessel of nuclear power station

The invention relates to the technical field of containment detection, in particular to a nuclear power station containment internal structure nondestructive testing device which comprises a detection mechanism and an energy supply mechanism, the energy supply mechanism is fixedly connected to the front side of the detection mechanism, and the detection mechanism comprises a moving assembly, a positioning assembly, a detection assembly, a magnetization assembly, a storage assembly and a recovery assembly. The positioning assembly is arranged on the inner side of the moving assembly, the detection assembly is arranged on the rear side of the positioning assembly, and the magnetization assembly is arranged on the rear side of the detection assembly. The nuclear power plant containment internal structure nondestructive testing device provided by the invention is provided with a dry and wet combined structure when magnetic chip nondestructive testing is performed on the nuclear power plant containment, so that smooth parts and rough parts of the containment can be respectively detected, the flexibility during detection is improved, and the nuclear power plant containment internal structure nondestructive testing device is provided with a wall-climbing robot energy recycling structure, so that the detection efficiency is improved. And the endurance time of the wall-climbing robot can be prolonged, and the energy-saving performance of the wall-climbing robot during use is improved.

HUE070869 (T2) - METHOD AND DEVICE FOR THE NONDESTRUCTIVE TESTING OF A WELD OF A NUCLEAR REACTOR PART

The invention relates to a device and a method for the nondestructive testing of a weld (1) in a part for a nuclear reactor, said part comprising an outer surface (10), the weld (1) comprising a first area (z1) close to the outer surface (10) and a second area (z2) further away from the outer surface (10), said method using: a first monoelement TOFD sensor (4) for probing the first area (z1) of the weld (1); and a multielement TOFD sensor for probing the second area (z2) of the weld (1).

CN112845392 (A) - Accurate nondestructive laser decontamination method for contaminated metal parts on surface of nuclear facilities

The invention relates to the technical field of decontamination of contaminated metal parts on surface of nuclear facilities, and discloses an accurate nondestructive laser decontamination method for the contaminated metal parts on surface of the nuclear facilities. The method comprises the following steps of, S1, aligning a laser to a contaminated area of a part to be decontaminated, then carrying out nanosecond laser treatment by using nanosecond laser according to a preset scanning path so as to remove radioactive contaminants on the surface of the metal part to be decontaminated; and S2, align the laser device to the area treated by the nanosecond laser, then carrying out picosecond laser composite treatment according to a preset scanning path so as to repair the surface of a molten pool pit formed after nanosecond laser decontamination, reduce the roughness of the surface of the metal part, and optimize surface structure and performance. The picosecond laser composite treatment means that picosecond laser treatment is carried out at the same position after nanosecond laser treatment is carried out for a certain time, specifically, the nanosecond laser is in the front, the picosecond laser is in the rear, and the two steps act synergistically.

CN222926679 (U) - Metal pipe nondestructive testing auxiliary device

The utility model relates to the technical field of metal pipe nondestructive testing, and discloses a metal pipe nondestructive testing auxiliary device which comprises a testing table, a metal pipe body is arranged above the testing table, pipe adjusting mechanisms are installed on the two sides of the top of the testing table, and a testing position adjusting mechanism is arranged above the metal pipe body. Through the cooperation of the supporting cover, the supporting column, the servo motor, the lead screw, the adjusting block, the first electric telescopic rod, the connecting frame, the mounting seat and the mounting frame, the height and the horizontal position of the flaw detector probe during detection can be conveniently adjusted; and through cooperation of a supporting frame, a double-shaft motor, a connecting shaft, a bearing, a driving gear, a rotating gear, a screw rod, an arc-shaped anti-skid clamping plate, a guide rod, a limiting sliding block and an annular limiting sliding groove, the metal pipe can be conveniently driven to rotate, the position of the metal pipe during nondestructive testing is adjusted, and therefore the pipe testing efficiency of the flaw detector probe is improved.

CN120008527 (A) - Nondestructive testing device for metal plates

The invention relates to the field of plate detection, in particular to a metal plate nondestructive testing device which comprises a vertical plate and a long-strip-shaped pressure box arranged on the vertical plate. A rectangular sliding groove is formed in the vertical plate, two sliding blocks are arranged in the rectangular sliding groove in a sliding mode, and each sliding block is provided with a rectangular frame through a connecting rod. A fixing mechanism for fixing the metal plate is arranged in each rectangular frame; a plurality of sliding holes are formed in the two sides of the long-strip-shaped pressure box at equal intervals in the length direction, and a detection mechanism used for detecting and marking the concave-convex surface of the metal plate is arranged in each sliding hole. Through movement of the two sliding blocks, the two sides of the metal plate can make contact with the detection mechanisms on the two sides of the long-strip-shaped pressure box correspondingly, so that the two sides of the moving metal plate can be continuously detected and marked, the detection efficiency is improved, and workers can conveniently conduct repair inspection.

CN222866661 (U) - Noble metal nondestructive testing positioning device

The utility model discloses a precious metal nondestructive testing positioning device which comprises a box body, two relatively sliding rectangular blocks are arranged in the box body, a supporting plate is arranged above each rectangular block, and a clamping plate is rotatably arranged on the inner side of each supporting plate; a stroke amplification device is arranged above the rectangular block, and the rectangular block is connected with the supporting plate through the stroke amplification device; the stroke amplification device comprises a swing rod, the middle of the swing rod is hinged and fixed to the box body, a first sliding groove is formed in the upper end of the swing rod, a first pin shaft is slidably arranged in the first sliding groove, and the first pin shaft penetrates through the swing rod and is fixedly connected with the supporting plate; a second sliding groove is formed in the lower end of the swing rod. According to the utility model, the displacement of the supporting plate is increased through the stroke amplifying device; the pinion drives the bull gear to rotate, so that the rotation of the clamping plate is realized; and through the arrangement of the air bag, soft contact is achieved, and damage to precious metal is avoided.

CN119935918 (A) - Nondestructive testing method and system for heavy metal pollution of camellia oleifera

The invention relates to the technical field of soil remediation, in particular to a nondestructive testing method and system for heavy metal pollution of camellia oleifera abel. The method comprises the steps that sample spectrograms of a camellia oleifera abel garden every day are obtained, and a plurality of soil improvement days are selected from the sample spectrograms; obtaining the content of each heavy metal in the sample every day according to the sample spectrogram every day; acquiring the characteristic distance of each soil improvement day according to the content of each heavy metal in the sample every day; according to the characteristic distance between the adjacent soil improvement days, the primary pH value reduction value of the soil improvement days is obtained; according to the characteristic distance between every two adjacent soil improvement days, the primary pH value reduction value of the soil improvement days is corrected, and the pH value reduction value of the soil improvement days is obtained. By detecting the content of various heavy metals in the camellia oleifera garden soil and combining the heavy metal absorption rate of the camellia oleifera trees, the heavy metals in the soil are gradually solidified, and normal growth of the camellia oleifera trees is prevented from being affected when the soil quality is improved.

CN119804478 (A) - High-precision nondestructive testing method for welding seam of metal wiring terminal

The invention relates to the technical field of metal wiring terminal welding seam detection, in particular to a high-precision nondestructive detection method for a metal wiring terminal welding seam, which comprises the following steps: processing a copper-aluminum connecting terminal by a fluorescent penetration detection method and acquiring an outer surface image of the copper-aluminum connecting terminal; acquiring fluorescence current data in the copper-aluminum connecting terminal; acquiring a plurality of weak fluorescence effect areas in the outer surface image of the copper-aluminum connecting terminal; obtaining the fluorescence boundary significance of the weak fluorescence effect region; obtaining the hole hollow degree of the weak fluorescence effect area; screening a plurality of suspected welding hollow areas according to the hollow degree of the hole; the irregularity of the suspected welding hollow area is obtained; and obtaining a plurality of hole defect areas in the copper-aluminum connection terminal according to the fluorescence current data in the copper-aluminum connection terminal and the irregularity. According to the invention, high-precision nondestructive testing can be carried out on tiny holes which are generated in the welding seam of the copper-aluminum connecting terminal and are communicated with the internal space.

CN119757696 (A) - Method and system for nondestructive measurement of alkali metal content in alkali metal gas chamber

The invention provides a method and a system for nondestructively measuring the content of alkali metal in an alkali metal gas chamber. The method comprises the following steps: driving alkali metal; selecting a light passing surface on one side as a calibration surface, and performing spot scanning detection on a first distance between the calibration surface and the laser to obtain a first surface distribution diagram H1 (x, y) of the distance between the calibration surface and the laser; driving alkali metal to a calibration surface; obtaining a proportional scale according to the actual area size corresponding to the pixel points of the shot image; calculating to obtain a shadow area, and obtaining a gas chamber inner wall surface alkali metal cluster horizontal plane distribution diagram S (x, y); a laser ranging technology is utilized to obtain a second surface distribution diagram H2 (x, y) of the distance between the calibration surface and the laser; calculating to obtain a height distribution diagram delta H (x, y) of the alkali metal clusters on the surface of the indoor wall; and calculating to obtain an alkali metal cluster volume distribution diagram on each pixel point, summing to obtain the volume of the total alkali metal, and calculating to obtain the mass of the alkali metal according to the volume. By applying the technical scheme of the invention, the technical problem that an accurate uncertainty index cannot be obtained by nondestructive measurement in the prior art is solved.

CN222719461 (U) - Soaking permeation device for liquid permeation nondestructive testing and processing of rare metal parts

The utility model relates to the technical field of workpiece detection equipment, in particular to a soaking permeation device for liquid permeation nondestructive detection processing of rare metal parts, which comprises a base, a soaking box is arranged on the upper side of the base; a storage box is arranged in the soaking box; driving devices for allowing the storage box to move up and down are arranged on the two sides of the storage box, and a material limiting device and a rotating device for rapidly draining soaking liquid are arranged in the storage box; the T-shaped sliding block is limited by the T-shaped sliding groove, so that the motor b cannot rotate along with the supporting disc, when liquid needs to be drained, the lifting frame is lifted, the bottom of the lifting frame is made to be higher than soaking liquid, then the motor b is started to drive the inner frame to rotate, the liquid on materials is rapidly drained through centrifugal force, and the draining time is saved.

CN222704586 (U) - External nondestructive detector for metal material

The utility model relates to the technical field of detectors, in particular to a metal material external nondestructive detector which comprises a table body, a placement plate is fixedly mounted on the upper surface of the table body, a detection mechanism is arranged on the surface of the placement plate, a mounting rod is horizontally and fixedly mounted on the inner wall of the placement plate, and mounting seats are symmetrically and fixedly connected to the mounting rod in a sleeving manner. A mounting opening is formed in the surface of the mounting seat, a rotating shaft is rotationally mounted on the inner wall of the mounting opening, and a mounting disc is fixedly mounted at one end of the rotating shaft; mounting plates are fixedly mounted on the surfaces of the mounting plates, first threaded rods are vertically and rotatably mounted on the upper surfaces of the mounting plates, clamping plates sleeve the first threaded rods in a threaded manner, rotation of the clamping plates is limited through limiting parts, and the two mounting plates are controlled to rotate together through a transmission assembly. And through cooperation of a first threaded rod, a clamping plate and a mounting plate, metal materials of different sizes can be rapidly clamped and fixed, and the practicability of the device is improved.

CN119595707 (A) - Nondestructive testing method for metal plate

The invention discloses a nondestructive testing method for a metal plate, which comprises the following steps of: 1, heating the metal plate by a pulse excitation signal generation system, and acquiring the surface temperature of the metal plate to obtain a temperature image of the surface of the metal plate; 2, identifying a temperature sudden change area in the temperature image of the surface of the metal plate to obtain a crack position; 3, collecting changes of the primary magnetic field and the secondary induced magnetic field, and obtaining a rising edge peak potential difference and a falling edge peak potential difference; and 4, constructing a crack quantitative detection model, and inputting the rising edge peak potential difference and the falling edge peak potential difference into the crack quantitative detection model to obtain the crack depth. Wherein the crack quantitative detection model comprises an input layer, a first convolution layer, a first batch of standardization layers, a second convolution layer, a second batch of standardization layers, a discarding layer, a linear rectification layer, a full connection layer and an output layer. The device and the method have the characteristics of accurately positioning the crack and accurately detecting the depth of the crack.

CN222577967 (U) - Pipeline nondestructive metal corrosion monitoring probe

The utility model relates to the technical field of electrochemical corrosion monitoring devices, and discloses a pipeline lossless metal corrosion monitoring probe which comprises an external pipeline and a connecting pipe, a supporting ring is fixedly arranged on the lower side of the interior of the connecting pipe, and fixing blocks and fixing rods are fixedly arranged at the left end and the right end of the outer side of the middle of the connecting pipe. The fixed block penetrates through the middle part of the fixed block; the spring is arranged on the outer side of the middle of the fixing rod, the end, away from the vertical central axis of the connecting pipe, of the spring is fixedly installed on the fixing block, and the end, close to the vertical central axis of the connecting pipe, of the spring abuts against the fixing rod; the monitoring assembly is arranged in the middle of the inner side of the connecting pipe; the temporary sealing assembly is installed in the middle of the inner side of the connecting pipe. According to the pipeline lossless metal corrosion monitoring probe, the monitoring metal rod can be conveniently disassembled and assembled, meanwhile, a good dual-sealing function is provided for the interior of a pipeline, and when the monitoring metal rod is detected, a good temporary sealing function can be provided for an open hole.

CN222545285 (U) - Ultrasonic nondestructive testing equipment for metal

The utility model discloses ultrasonic non-destructive testing equipment for metal, which relates to the technical field of metal non-destructive testing and comprises an operation table, a box groove is arranged at the top end of the operation table, a detection water tank is fixedly connected to the lower inner wall of the box groove, an ultrasonic detector is arranged on the lower inner wall of the detection water tank, and the ultrasonic detector is arranged on the lower inner wall of the detection water tank. A feeding port is formed in one end of the detection water tank, a storage groove is formed in the top end of the operation table and communicates with the feeding port, a clamping device is arranged at the top end of the detection water tank and comprises a first motor, and the output end of the first motor is fixedly connected with a worm; the outer surface of the worm is in meshed connection with a worm gear, the inner surface of the worm gear is fixedly sleeved with a threaded rod, and the top end of the detection water tank is provided with a through type circular groove. By arranging the clamping device, the detection can be effectively more comprehensive, and the whole detection process can be simplified.

CN119198906 (A) - Metal material mechanical property multi-parameter nondestructive evaluation method based on grating laser ultrasonic sound spectrum

The invention discloses a multi-parameter nondestructive evaluation method for mechanical properties of a metal material based on a grating laser ultrasonic sound spectrum, which comprises the following steps of: irradiating a high-energy pulse laser beam on the surface of the metal material to be detected through a micro-lens array to form a periodically distributed transient grating, and exciting a monochromatic ultrasonic Rayleigh wave with a fixed wavelength in the material; and meanwhile, detecting laser is adopted to receive Rayleigh wave signals near the to-be-detected area in a non-contact manner. And performing fast Fourier transform on the received Rayleigh wave signal to obtain a narrow-band frequency spectrum, and calculating acoustic parameters such as sound velocity and acoustic nonlinear parameters through the narrow-band frequency spectrum. And according to a theoretical formula, an experimental relationship calibration curve and the like, respectively establishing calibration relationships between the elastic modulus and the sound velocity, between the hardness and the sound nonlinear parameter, between the yield strength and the sound nonlinear parameter and between the ultimate tensile strength and the sound nonlinear parameter of the metal material, thereby realizing multi-parameter quantitative evaluation on the mechanical properties of the metal material.

CN222137924 (U) - Continuous feeding metal material nondestructive testing device

The utility model discloses a continuous feeding metal material nondestructive testing device, and relates to the technical field of nondestructive testing, the continuous feeding metal material nondestructive testing device comprises a workbench, four corners of the bottom surface of the workbench are all provided with support legs, the top surface of the workbench is provided with a mounting hole, and the mounting hole is provided with a through hole. The feeding assembly is arranged in an inner cavity of the mounting hole, and the feeding assembly is used for placing and conveying metal materials; the number of the guiding assemblies is two, the two guiding assemblies are symmetrically distributed, the two guiding assemblies are arranged in the middles of the two sides of the surface of the top of the workbench correspondingly, and the guiding assemblies are used for guiding and limiting metal materials; according to the metal material detection device, the metal material can be detected, and the position of the metal material does not need to be manually adjusted by a worker, so that the detection efficiency is improved.

CN119000691 (A) - Metal internal defect nondestructive testing method based on phase-locked thermal imaging

The invention relates to the field of metal detection methods, in particular to a metal internal defect nondestructive detection method based on phase-locked thermal imaging. The method comprises the following steps: S1, increasing the temperature of a measured metal surface through laser excitation; s2, collecting a thermal image sequence of the measured metal through an infrared camera; s3, after a thermal image sequence is obtained, storing each frame of picture as a matrix T (n); s4, performing discrete Fourier transform (DFT) on the series of thermal image sequences, and calculating the DFT; and S5, obtaining an amplitude image used for obtaining defect position information and a phase image used for obtaining defect depth information according to the frequency # imgabs0 # based on a formula, and capturing tiny temperature change by extracting the amplitude and phase information of the surface thermal signal under the specific phase locking frequency, thereby realizing detection of tiny defects in the detected metal. The detection method is slightly influenced by factors such as environmental reflection and material surface conditions, and the real condition in the detected metal can be reflected more accurately.

CN118961530 (A) - Nondestructive evaluation method for porosity of metal

The invention relates to a nondestructive evaluation method for the porosity of an intelligent metal temperature control material for additive manufacturing in the field of nondestructive testing, and the method comprises the following steps: S1, collecting ultrasonic scattering full-wave data of a metal material sample, and pre-segmenting the ultrasonic scattering full-wave data; s2, observing the porosity of the metal material sample; s3, dividing the ultrasonic scattering full-wave data according to a porosity observation result so as to construct a metal material ultrasonic scattering-porosity data set; s4, constructing a scattered material porosity prediction model based on a multi-modal fusion attention mechanism, and training the prediction model by using the ultrasonic scattering-porosity data set; and S5, calculating the porosity of the material by adopting the trained prediction model. According to the nondestructive evaluation method, quantitative evaluation can be carried out on the porosity of the intelligent metal temperature control material for additive manufacturing under the nondestructive condition, the accuracy and reliability of quality evaluation are effectively improved, and the method has a great practical application prospect.

CN118150685 (A) - Nondestructive testing method and nondestructive testing system for construction quality of trapezoidal sleeper

The invention discloses a nondestructive testing method and system for the construction quality of a trapezoidal sleeper, and the method comprises the steps: obtaining the theoretical inherent frequency of the trapezoidal sleeper under a no-load working condition through theoretical calculation, and obtaining the actually-measured inherent frequency of the trapezoidal sleeper to be detected under the no-load working condition in real time through a field hammering experiment; and the construction quality can be obtained by comparing the difference between the two values, so that further construction treatment work can be quickly and conveniently carried out on the to-be-detected trapezoidal sleeper with the construction quality.

CN113529549 (A) - Bridge head pavement subsidence nondestructive quantitative detection and non-excavation type rapid treatment grouting construction method

The invention discloses a bridgehead pavement subsidence nondestructive quantitative detection and non-excavation type rapid treatment grouting construction method. The method is characterized in that; the construction method comprises the following steps: (1) carrying out rapid nondestructive testing and quantitative evaluation on pavement void; (2) drilling; (3) arranging a jacking monitoring system; (4) mounting a grouting pipe and installing a grouting head; (5) grouting; (6) performing hole sealing; (7) performing quality control; and (8) performing grouting effect detection. The method solves the industrial problems of large excavation scale, high construction difficulty, difficulty in thorough treatment and large traffic interference in treatment of the bridgehead pavement subsidence disease.

The operation of nuclear power plants (NPPs) produces large amounts of high-level radioactive waste known as spent nuclear fuel (SNF). Currently, large amounts of SNF is stored in dry cask storage systems (DCSSs) for extended interim storage until a permanent disposal solution becomes available. During the extended interim storage, the DCSS, particularly the SNF canisters, may degrade and abnormal conditions may occur. Therefore, non-destructive evaluation (NDE) and machine learning (ML) approaches are necessary for inspection of SNF canisters. This paper presents a state-of-the-art review of literature by summarizing recent progress made on the applications of NDE and ML for inspection of SNF canisters. Sixteen NDE methods are examined and compared: visual inspection, ultrasonic guided waves (UGWs), laser-based approaches, acoustic emission (AE), eddy current testing (ECT), non-invasive acoustic sensing, dynamic modal testing, cosmic ray muons tomography, neutron imaging, gamma rays detection, fiber optical sensors, through-wall communications, X-ray computed tomography (CT), vibrothermography, monoenergetic photon sources, and surface acoustic wave (SAW) sensors. The technology readiness level (TRL) for each method is assessed and compared. Recent publications on ML-enhanced visual inspection, AE, non-invasive acoustic sensing, dynamic modal testing, and neutron imaging for SNF canisters are summarized and future research needs are identified (1,2).

1. Non-destructive evaluation and machine learning methods for inspection of spent nuclear fuel canisters: A state-of-the-art review. Bozhou Zhuang, Anna Arcaro, Bora Gencturk, Ryan Meyer, ... Morris Good. Progress in Nuclear Energy 2025. Article 105697
2. Non-destructive testing methods for condition monitoring: A review of techniques and tools. Ietezaz ul Hassan, Krishna Panduru, Prof Joseph Walsh. Procedia Computer Science, Volume 257, 2025, Pages 420-427