EP4090962A1 - Method for monitoring the change over time of a defect in a structure - Google Patents
Method for monitoring the change over time of a defect in a structureInfo
- Publication number
- EP4090962A1 EP4090962A1 EP20838567.4A EP20838567A EP4090962A1 EP 4090962 A1 EP4090962 A1 EP 4090962A1 EP 20838567 A EP20838567 A EP 20838567A EP 4090962 A1 EP4090962 A1 EP 4090962A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ultrasonic
- testing device
- destructive testing
- measurement
- cockpit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/041—Analysing solids on the surface of the material, e.g. using Lamb, Rayleigh or shear waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
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- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
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- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G01N2291/263—Surfaces
Definitions
- TITLE PROCESS FOR CHECKING THE TEMPORAL EVOLUTION OF A DEFECT IN A STRUCTURE
- the technical field of the invention is that of ultrasonic non-destructive testing and in particular the control of the structural integrity of a structure such as pressure equipment.
- a structural integrity check is carried out regularly over time. These checks aim to determine the appearance of a fault or to monitor its evolution.
- the desired defects are, for example, cracks created by loading conditions, a porous zone or a corrosion zone of the structure in contact with active products or else the delamination between the layers of a composite material.
- the control means used are of the non-destructive type, such as for example ultrasonic mapping.
- a mapping method is known from the prior art using a portable ultrasonic non-destructive testing device, comprising an ultrasonic phased array sensor, making it possible to carry out, on site, the measurements and the analysis of the data of measure.
- This type of device generally comprises a user interface, such as a screen, making it possible to display the measurement data or indicators resulting from the analysis of measurement data in real time.
- this type of portable device requires the intervention of an operator on site, near a structure with a fault, to perform the measurements and process the measurement data.
- the magnitude of the defect present in the structure can be such that the safety of the operator is compromised and this compromise will only be revealed when the operator has mapped the portion comprising the defect and analyzed the measurement data.
- the invention offers a solution to the problems mentioned above, by making it possible to carry out, in real time, in a more efficient and safer way, a mapping of a structure in operational condition in order to ensure the monitoring of the evolution. of a defect.
- a first aspect of the invention relates to a method for controlling a portion of a structure implementing a cockpit configured to control at least one ultrasonic non-destructive testing device through a remote network, each Ultrasonic non-destructive testing device comprising a phased array ultrasonic sensor disposed on a surface of the portion of the structure, the method comprising, for each ultrasonic non-destructive testing device, the following steps:
- step A does not include any measurement preparation or preliminary calculations which could delay sending the first measurement request to one of the ultrasonic non-destructive testing devices.
- the operator obtains at least a first map, resulting from step C, with no waiting time other than the time specific to carrying out the measurements by the ultrasonic non-destructive testing device.
- the time between obtaining the first and second maps makes it possible to observe the evolution over time of a portion of the structure, materialized by the second map, relative to an initial state, materialized by the first map.
- the cockpit with which the operator interacts to obtain the maps, is distinct from each ultrasonic non-destructive testing device.
- the operator can be located at a distance from structures comprising at least one fault and which may present a risk to his safety.
- Another advantage of the implementation of the remote network is to pool the cockpit between several ultrasonic non-destructive testing devices arranged on different sites. Thus, the operator can control the evolution of a plurality of portions of structures, without going to the different sites.
- the remote network is wireless.
- An advantage of the wireless network is to be able to move while maintaining the connection between the cockpit and each ultrasonic non-destructive testing device.
- the operator can carry out a first check, near the ultrasonic non-destructive testing device in order to determine whether the device is correctly positioned and then move away from the device to carry out the other checks.
- the first measurement request comprises at least a first item of information selecting a measurement mode. According to an embodiment of the first aspect of the invention, the first measurement request comprises at least a first operating parameter of the measurement mode.
- the second measurement request comprises at least a second item of information selecting the measurement mode.
- the second measurement request comprises at least one second operating parameter of the measurement mode.
- the measurement mode describes the course of steps within the ultrasonic non-destructive testing device which result in the obtaining of measurement data. In some cases, the flow of steps requires the provision of operating parameters.
- Selecting a measurement mode for obtaining the second plurality of measurement data, different from the measurement mode used for obtaining the first plurality of measurement data, makes it possible to adapt the control method to revolution. of the fault to be checked.
- the selection of the measurement mode from the first measurement request or from the second measurement request makes it possible to select the remote measurement mode without the operator having to go to the site of measure.
- the method comprises a step of triggering d 'an indicator.
- An advantage of triggering an indicator relating to a predetermined threshold value is to reveal, without interpretation of a result of step H by a specialist in non-destructive testing, a compromise of the structure portion.
- a delay between the sending of the first measurement request and the sending of the second measurement request is predetermined.
- step A the time of execution of step A is programmed.
- An advantage of the programmed time is the execution of the entire control method, in a programmed manner, without interaction on the part of an operator, for example to carry out a night control.
- Programming the execution time according to a time list allows an autonomous and continuous control mode, without interaction on the part of an operator.
- a second aspect of the invention relates to a measurement method in a portion of a structure implementing an ultrasonic non-destructive testing device configured to be controlled by a cockpit by means of a remote network, the ultrasonic non-destructive testing device comprising a phased array ultrasonic sensor disposed on a surface of the portion of the structure, the method comprising the following steps:
- the remote network is wireless.
- the first measurement request comprises at least a first item of information selecting a measurement mode.
- the first measurement request comprises at least a first operating parameter of the measurement mode.
- the second measurement request comprises at least a second item of information selecting the measurement mode.
- the second measurement request comprises at least one second operating parameter of the measurement mode.
- the measurement steps J and M comprise the following substeps: for each ultrasonic element of the phased array ultrasonic sensor:
- V measuring, by means of all the ultrasonic elements of the ultrasonic phased array sensor, a plurality of measurement data, the plurality of measurement data corresponding to the reception of an ultrasonic wave reflected on each ultrasonic element of the ultrasonic phased array sensor.
- a third aspect of the invention relates to a cockpit configured to carry out the steps of the method according to the first aspect of the invention.
- a fourth aspect of the invention relates to an ultrasonic non-destructive testing device comprising a phased array ultrasonic sensor and configured to perform the steps of the method according to the second aspect of the invention.
- a fifth aspect of the invention relates to a system comprising a cockpit according to the third aspect of the invention and at least one ultrasonic non-destructive testing device according to the fourth aspect of the invention.
- a sixth aspect of the invention relates to the use of a system according to the fifth aspect of the invention, in which the phased array ultrasonic sensor is arranged on a surface of a portion of a sheet metal equipment. under pressure, such as an adsorber.
- the system according to the sixth aspect of the invention makes it possible in particular to follow the evolution of the defects during a pressure variation in order to determine the impact of a loading variation on the propagation of the crack.
- the system also makes it possible to follow, by repeated mapping over time, the degree of hydrogen embrittlement of the crack.
- FIG.1 shows a schematic representation of the system according to the invention.
- FIG.2 shows a schematic representation of an ultrasonic control and measurement method according to the invention.
- FIG.3 shows a schematic representation of a phased array ultrasonic sensor.
- FIG.4 shows a schematic representation of a plurality of digital measurement data.
- FIG. 1 shows a control system 400 intended to control the evolution of a portion 3 of a structure 1, intended to follow the appearance or the evolution of a defect 2 in the portion 3.
- the system 400 comprises a cockpit 100 and an ultrasonic non-destructive testing device 300, the ultrasonic non-destructive testing device 300 comprising an ultrasonic phased array sensor 310.
- the ultrasonic non-destructive testing device 300 is deployed in the vicinity of the structure 1 and the phased array ultrasonic sensor 310 is arranged in the contact with a surface of portion 3.
- the structure 1 can be a pressurized boiler equipment, such as an adsorber.
- the connection between the cockpit 100 and the ultrasonic non-destructive testing device 300 is made through a remote network 200.
- the remote network 200 allows the transfer of data such as a command or measurement data.
- the remote network 200 can be wired, for example by means of an electronic cable, or wireless, for example using a Wi-Fi or 4G communication means, or even a combination of all these means.
- the cockpit 100 can be remote from the ultrasonic non-destructive testing device 300 and therefore from the portion 3 comprising the defect 2.
- an operator interacting with the cockpit 100 can trigger a control process from a safe environment.
- the control system 400 may include another ultrasonic non-destructive testing device 300, deployed at the same structure 1 or a another structure 1 in order to check another portion 3 comprising another defect 2.
- the connection between the cockpit 100 and the other ultrasonic non-destructive testing device 300 is made through the remote network 200.
- the testing method can be made. be performed between the cockpit 100 and each ultrasonic non-destructive testing device 300 simultaneously, without interactions.
- the two structures 1 can be located on geographically distant control sites, for example several hundred kilometers. Thanks to the implementation of the remote network 200, the cockpit can be shared between different sites and, for example, located in a control room. Thus, the operator does not need to physically go to each inspection site to carry out the inspection of the structure.
- the ultrasonic non-destructive testing device 300 is configured to perform, in portion 3 of structure 1, the steps of an ultrasonic measurement method detailed below.
- the ultrasonic non-destructive testing device 300 comprises: the phased array ultrasonic sensor 310; and a phased array electronic card 340.
- the phased array ultrasonic sensor 310 comprises a plurality of ultrasonic elements 311.
- An ultrasonic element 311 is a translator (also called a transducer) for converting an electrical signal into an acoustic wave and converting an acoustic wave into an electrical signal.
- the number of ultrasonic elements 311 included in the phased array ultrasonic sensor 310 can reach a few hundred elements typically ranging from 8 to 256 elements.
- the ultrasonic elements 311 are made of a material making it possible to generate an incident acoustic wave 11, the frequency of which is in the ultrasonic range, preferably in a range extending from 0.2 MHz to 20 MHz.
- the ultrasonic elements 311 can for example be made of piezoelectric ceramic, such as for example lead titano-zirconate (PZT).
- the plurality of ultrasonic elements 311 is used to generate a plurality of incident ultrasonic waves 11 from a plurality of electrical control signals, each electrical control signal actuating an ultrasonic element 311. Likewise, the plurality of ultrasonic elements 311 is used to produce a plurality of electrical measurement signals, each electrical measurement signal corresponding to an amplitude of a reflected wave 12, received by an ultrasonic element 311.
- the plurality of ultrasonic elements 311 can be arranged in a linear arrangement, preferably at a constant pitch.
- the phased array ultrasonic sensor 310 receives the reflected ultrasonic wave 12
- the plurality of electrical measurement signals produced corresponds to the spatial discretization of the ultrasonic wave reflected 12 by the plurality of ultrasonic elements 311.
- the phased array ultrasonic sensor 310 can be attached to the surface of portion 3 by means of a fixing system.
- This fixing system comprises, for example, magnetic studs, glue or even suction cups.
- the mechanical contact between the phased array ultrasonic sensor 310 and the surface of the structure 1 is improved by means of a couplant.
- the couplant ensures a good acoustic impedance match between the phased array ultrasonic sensor 310 and the propagation material and allows the ultrasonic waves to propagate without attenuation.
- the coupling can be a liquid such as water, a gel or a grease such as for example high temperature grease EKOGREASE-HT TM manufactured by the company EKOSCAN TM.
- a sole 320 can be inserted between the phased array ultrasonic sensor 310 and the surface.
- the sole 320 is a solid piece, angular in shape, allowing the propagation of ultrasonic waves.
- An angle formed by the sole 320 typically between 45 ° and 60 °, makes it possible to orient the incident ultrasonic wave in a direction different from the direction normal to the surface of the structure 1.
- the sole 320 can be made of a polymer material such as Rexolite TM.
- the incident ultrasonic wave 11 emitted by an ultrasonic element 311 is a compression wave and is longitudinal. Thanks to the sole 320, it is possible to emit incident ultrasonic waves 11 transverse in the portion 3.
- the angle formed by the incident ultrasonic wave 11 at an interface between the sole 320 and the portion 3 decomposes the wave into a longitudinal component and a transverse component.
- By adjusting the angle of the incident wave 11, for example by changing the angle formed by the sole 320 it is possible to favor one component over the other.
- the phased array electronic card 340 comprises: a generation module 341; a converter 342; a network interface 343, configured to communicate with the remote network 200; and a bus allowing the interconnection of the components of the phased array electronic card 340 with one another.
- the plurality of electrical control and measurement signals are transmitted between the phased array electronic card 340 and the phased array ultrasonic sensor 310 via an electrical link 330 such as an electronic cable.
- the generation module 341 is configured to produce the plurality of electrical control signals. Each electrical control signal actuates an ultrasonic element 311 of the plurality of ultrasonic elements 311 of the phased array ultrasonic sensor 310.
- a single ultrasonic element 311 among the plurality of ultrasonic elements 311 can be actuated from a single electrical control signal in order to emit a single incident ultrasonic wave 11.
- This mode of emission of a single incident ultrasonic wave 11 is in particular implemented in a measurement mode called full matrix capture or “full matrix capture” in English.
- the plurality of incident ultrasonic elements 11 can be actuated in parallel from the plurality of control signals in order to emit the plurality of incident ultrasonic waves 11.
- the introduction of a plurality of delay times makes it possible to delay each electrical control signal.
- the plurality of delay times and the constructive or destructive interference between each incident ultrasonic wave 11 which result therefrom forms a beam of ultrasonic waves incident 11 oriented in one direction and focusing in a focal point.
- This transmission mode is implemented in particular in a so-called sectorial scanning measurement mode.
- the focusing distance is defined as the distance between the phased array ultrasonic sensor 310 and the focal point.
- Modifying the plurality of delay times makes it possible to modify the angle formed by the incident ultrasonic wave 11 at the interface between the sole 320 and the portion 3. Thus, it is possible to promote the longitudinal component or the component. transverse.
- the emission of the incident ultrasonic wave beam 11 can also be achieved by actuating a subgroup of contiguous ultrasonic elements 311 among the plurality of contiguous ultrasonic elements 311.
- sequentially actuating each sub-group of contiguous ultrasonic elements 311 among the plurality of sub-groups of contiguous ultrasonic elements 311, makes it possible to translate the beam of incident ultrasonic waves 11 in a direction parallel to the phased array ultrasonic sensor 310.
- This transmission mode is implemented in particular in a so-called linear scanning measurement mode.
- the emission of an incident ultrasonic wave 11 or of a beam of incident ultrasonic waves 11 is also called firing.
- the converter 342 is configured to convert each electrical measurement signal received as a function of time into measurement data.
- the resulting plurality of measurement data represents the plurality of amplitudes of each reflected ultrasonic wave 12 received by each ultrasonic element 311 as a function of time.
- the converter 342 In the measurement modes by sector scanning and by linear scanning, the converter 342 also performs a time shifting operation of each measurement data corresponding to the delay time used to generate the beam of incident ultrasonic waves 11 as well as a summation operation of the plurality of measurement data.
- the resulting measurement data represents the amplitude of an ultrasonic wave propagating in the same orientation as the beam of incident ultrasonic waves 11 but in the opposite direction.
- the ultrasonic non-destructive testing device 300 is compatible with safety rules that can be expected to be encountered on the testing site, such as for example the ATEX regulations, describing the rules for use of electrical equipment in an explosive atmosphere.
- the cockpit 100 is configured to perform the steps of the control method of portion 3 of structure 1 described below, the control method being in particular intended for monitoring the development of a fault 2 in portion 3.
- the cockpit 100 comprises: a calculation unit 101; a network interface 102, configured to communicate with the remote network 200; and a bus allowing the interconnection of the components of the cockpit 100 between them.
- the cockpit comprises a man-machine interface such as a screen, making it possible to display information to the operator and input peripherals such as a keyboard and / or a mouse.
- the cockpit 100 can for example be a laptop or a touchscreen tablet.
- the cockpit 100 is also configured to trigger an indicator.
- the indicator can be a notification sent to the operator by means of an electronic communication service or, in the event of a severe compromise of portion 3, a visual and / or audible warning, sent, for example, by means of an audible (eg: alarm) or visual (eg: special rotating light) warning device.
- FIG. 2 schematically shows the ultrasonic measurement method in portion 3 of structure 1.
- the method comprises steps I, J, K, L, M and N, carried out successively.
- Step I receipt of a first measurement request
- Step I of the measurement method is the reception, by the ultrasonic non-destructive testing device 300, of a first measurement request sent by the cockpit 100.
- the first measurement request is a command, understandable by the ultrasonic non-destructive testing device 300.
- the reception of the first measurement request has the effect of triggering step J.
- the first measurement request comprises a first item of information making it possible to program the ultrasonic non-destructive testing device 300 and to select the measurement mode implemented in step J.
- the first measurement request advantageously comprises a plurality of additional information such as a minimum angle, a maximum angle, an angular pitch or even a focusing distance.
- the first information can also make it possible to select the type of incident ultrasonic wave 11 propagating in the portion 3, favoring the longitudinal or transverse component.
- Step J Obtaining a First Plurality of Measurement Data
- Step J relates to obtaining a first plurality of measurement data 500.
- the first plurality of measurement data 500 can be obtained by the full matrix capture mode.
- the phased array ultrasonic sensor 310 comprises four ultrasonic elements 311.
- the role of the second ultrasonic element 311 is to be a transmitter and has the sign E2 and the role of all the ultrasonic elements 311 is to be a receiver and has the signs R1, R2, R3 and R4.
- the full matrix capture mode involves two stages, U and V.
- step U the ultrasonic emitting element E2 generates the incident ultrasonic wave 11 propagating in the portion 3.
- step V the receiving ultrasonic elements R1, R2, R3, R4 receive the wave reflected ultrasound 12 from the reflection of the incident ultrasonic wave 11 by the fault 2 and produce the plurality of electrical measurement signals. Steps U and V are repeated sequentially selecting another ultrasound element 311 as emitter until all the emitting ultrasonic elements E1, E2, E3, E4 have been implemented in step U.
- the plurality of measurement data 500 may take the form of a matrix, as shown in FIG. 4.
- the matrix comprises, in this case, a plurality of rows and a plurality of columns.
- Each row, denoted R1, R2, R3, R4, corresponds to one of the ultrasonic receiving elements R1, R2, R3, R4 and each column, denoted E1, E2, E3, E4, corresponds to one of the ultrasonic emitting elements E1, E2, E3, E4.
- the plurality of measurement data, resulting from the conversion of the plurality of electrical measurement signals relating to the emitting ultrasonic element E1, E2, E3, E4, are stored in the column corresponding to the emitting ultrasonic element E1, E2, E3, E4.
- the first plurality of measurement data 500 can be obtained by sector scanning. Data acquisition is performed by scanning the orientation of the incident ultrasonic wave beam 11 at a plurality of angles, the plurality of angles being defined by the minimum angle, the maximum angle and the angular step. . The first plurality of measurement data 500 is thus formed by the plurality of measurement data relating to the plurality of angles.
- the first plurality of measurement data 500 can also be obtained by a so-called linear scanning measurement mode.
- the first plurality of measurement data 500 is thus formed by the plurality of measurement data relating to each subgroup of contiguous ultrasonic elements 311.
- Step K send the first plurality of measurement data
- Step K is the sending, by the ultrasonic non-destructive testing device 300, by means of the remote network 200, of the first plurality of measurement data 500, to the cockpit 100.
- Step L receipt of a second measurement request
- Step L corresponds to the reception, by the ultrasonic non-destructive testing device 300, of a second measurement request from the cockpit 100.
- the second measurement request can take the same form as the first request. measurement described above.
- the reception of the second measurement request has the effect of triggering step M.
- the second measurement request comprises a second item of information making it possible to program the ultrasonic non-destructive testing device 300 and to select the measurement mode.
- the measurement mode implemented in step M can be different from the measurement mode implemented in step J.
- the second item of information can also make it possible to select the type of incident ultrasonic wave 11 propagating in portion 3. .
- Step M Obtaining a Second Plurality of Measurement Data
- Step M relates to obtaining a second plurality of measurement data 500.
- the measurement mode implemented to obtain the second plurality of measurement data 500 can be defined by the second measurement request and is part of the measurement modes described above.
- Step N send the second plurality of measurement data
- Step N is the sending, by the ultrasonic non-destructive testing device 300, by means of the remote network 200, of the second plurality of measurement data to the cockpit 100.
- FIG. 2 schematically shows the method for checking portion 3 of structure 1 described below, the checking method being intended in particular for checking the development of fault 2.
- the control method comprises steps A, B, C, D, E, F and G, carried out successively.
- Step A send the first measurement request
- Step A of the control method concerns the sending, by the cockpit 100, by means of the remote network 200, to the ultrasonic non-destructive testing device 300, of the first measurement request described in the step I of the ultrasonic measurement process.
- the first measurement request comprises the first item of information making it possible to select the measurement mode implemented by the ultrasonic non-destructive testing device 300 to obtain the first plurality of measurement data.
- the operator can thus select the measurement mode best suited to the inspection of portion 3.
- the ultrasonic non-destructive inspection device 300 is programmable remotely.
- step A is triggered, on demand, by an operator.
- Step A does not include any measurement preparation or preliminary calculations which could delay sending the first measurement request, so when the operator triggers the execution of stage A, the first measurement request is instantly sent to the ultrasonic non-destructive testing device 300.
- the time of execution of step A is programmable. It can for example be programmed at a later time, for example for a night measurement. It can also be programmed according to a time list, allowing an autonomous and continuous control mode.
- Step B receiving the first plurality of measurement data
- Step B of the control method is the reception, by the cockpit 100, by means of the remote network 200, of a first plurality of measurement data 500 coming from the ultrasonic non-destructive testing device 300.
- Step C construction of a first map
- Step C of the control method is the construction of a first map of portion 3, by means of the calculation unit 101, from the first plurality of measurement data 500.
- the first map represents the amplitude of the reflected ultrasonic wave 12, proportional to a variation of acoustic impedance in a plane of the portion 3.
- the plane is defined in two dimensions: a depth in the portion 3 and a distance in a direction tangent to the surface of portion 3, parallel to the plurality of ultrasonic elements 311.
- the construction of the first map follows the steps of an algorithm for focusing at any point or "total focusing method" in English.
- the steps of the focusing algorithm at any point are as follows:
- the portion 3 is meshed according to parameters, by means of the calculation unit 101, to obtain a plurality of mesh points.
- the mesh parameters can be the depth of the portion 3, the expected spatial resolution or even the number of ultrasonic elements 311 of the phased array ultrasonic sensor 310.
- Each delay time is allocated to an ultrasonic element 311 and corresponds to the time required for the incident ultrasonic wave 11 to settle. propagate from the emitting ultrasonic element E1, E2, E3, E4 to the mesh point.
- each column of the first plurality of measurement data 500 is delayed, by means of the calculation unit 101, according to the delay time allocated to the emitting ultrasonic element E1, E2, E3, E4.
- each measurement data item is summed, by means of the calculation unit 101, to form the first map.
- each measurement data is assembled, by means of the calculation unit 101, according to the angle or the distance which corresponds to it to form the first mapping.
- Step D send the second measurement request
- Step D of the control method is the sending, by the cockpit 100, by means of the remote network 200, of the second measurement request to the non-destructive testing device 300.
- the second measurement request can take the same form as the first measurement request described above.
- the second measurement request comprises the second item of information making it possible to select the measurement mode implemented to obtain the second plurality of measurement data.
- the operator can reprogram the ultrasonic non-destructive testing device 300 to change the measurement mode, refine a resolution or even extend the measurement to a larger area. extended within portion 3.
- the ultrasonic non-destructive testing device 300 is remotely reprogrammable.
- a delay between the sending of the first measurement request and the sending of the second measurement request makes it possible to observe the evolution over time of a portion 3, materialized by a second map, with respect to an initial state, materialized by the first mapping.
- the time may vary as a function of a time characteristic of the evolution of portion 3 ranging from a few minutes to several days.
- structure 1 is an adsorber and portion 3 is a portion of a wall of the adsorber, defect 2 contained in portion 3 is liable to change during pressure variations, for example in the phase of filling.
- the delay can be equal to the time of the filling phase.
- the delay may be several days or several weeks.
- the time limit is predetermined. Once the time has elapsed, step E is triggered automatically.
- the delay can be interrupted by an operator who triggers step E.
- Step E receiving the second plurality of measurement data
- Step E of the control method is the reception, by the cockpit 100, by means of the remote network 200, of a second plurality of measurement data 500 sent by the non-destructive testing device 300.
- Step F construction of a second map
- Step F of the control method is the construction, by the cockpit 100, of the second mapping of portion 3, by means of the calculation unit 101, from the second plurality of data from measures 500.
- the second map is constructed according to the procedure described above.
- the second map represents the amplitude of the reflected ultrasonic wave 12, proportional to the variation of acoustic impedance in the portion 3 as a function of the first and of the second dimension.
- Step G comparison of the first and second maps
- Step G of the control method is a comparison, by the cockpit 100, by means of the calculation unit 101, between the first map and the second map.
- the comparison between the first and second maps is carried out for the same set of coordinates, for example by performing a mathematical operation between the amplitude values, such as a difference.
- a resulting map then materializes a variation in acoustic impedance between obtaining the first and second pluralities of measurement data 500, for example due to the enlargement of a crack or the appearance of a porous zone.
- the resulting mapping can be used to automatically trigger the indicator. For example, a value of the depth of the zone exhibiting the variation in acoustic impedance is displayed as a function of time and makes it possible to monitor the progression of the fault. Thus, if the depth of the zone exhibiting the variation in impedance deviates from a predetermined threshold value then the indicator is triggered.
- the automatic triggering of the indicator relating to a predetermined threshold value, allows an operator who is not an expert in ultrasonic non-destructive testing to be warned of a level of compromise of one of the structures checked to trigger, for example, the necessary maintenance or safety operations.
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Abstract
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2000483A FR3106410B1 (en) | 2020-01-17 | 2020-01-17 | Method for controlling the temporal evolution of a defect in a structure |
PCT/EP2020/087864 WO2021144134A1 (en) | 2020-01-17 | 2020-12-24 | Method for monitoring the change over time of a defect in a structure |
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Publication Number | Publication Date |
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EP4090962A1 true EP4090962A1 (en) | 2022-11-23 |
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Application Number | Title | Priority Date | Filing Date |
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EP20838567.4A Pending EP4090962A1 (en) | 2020-01-17 | 2020-12-24 | Method for monitoring the change over time of a defect in a structure |
Country Status (7)
Country | Link |
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US (1) | US20230059369A1 (en) |
EP (1) | EP4090962A1 (en) |
KR (1) | KR20230002296A (en) |
CN (1) | CN115667906A (en) |
CA (1) | CA3167414A1 (en) |
FR (1) | FR3106410B1 (en) |
WO (1) | WO2021144134A1 (en) |
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US7647206B2 (en) * | 2006-09-15 | 2010-01-12 | The Boeing Company | System and method for monitoring structures for damage using nondestructive inspection techniques |
US7302866B1 (en) * | 2007-01-10 | 2007-12-04 | The Boeing Company | Device, system, and method for structural health monitoring |
US8347722B2 (en) * | 2008-01-22 | 2013-01-08 | Acellent Technologies, Inc. | Method and apparatus for conducting structural health monitoring in a cryogenic, high vibration environment |
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2020
- 2020-01-17 FR FR2000483A patent/FR3106410B1/en active Active
- 2020-12-24 CA CA3167414A patent/CA3167414A1/en active Pending
- 2020-12-24 WO PCT/EP2020/087864 patent/WO2021144134A1/en unknown
- 2020-12-24 US US17/792,313 patent/US20230059369A1/en active Pending
- 2020-12-24 KR KR1020227028423A patent/KR20230002296A/en active Search and Examination
- 2020-12-24 CN CN202080098372.6A patent/CN115667906A/en active Pending
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CN115667906A (en) | 2023-01-31 |
FR3106410B1 (en) | 2024-04-26 |
CA3167414A1 (en) | 2021-07-22 |
WO2021144134A1 (en) | 2021-07-22 |
US20230059369A1 (en) | 2023-02-23 |
FR3106410A1 (en) | 2021-07-23 |
KR20230002296A (en) | 2023-01-05 |
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