CN102253126A - Ultrasonic detection fast adjustment and calibration method through diffraction time difference process - Google Patents

Abstract

The invention discloses an ultrasonic detection fast adjustment and calibration method through the diffraction time difference process. The method comprises the following steps: adjusting a detection mode, data and the like through certain fixed steps according to detection needs, combining items which are originally dispersed in all menus and need to be adjusted together, regulating step by step according to a certain sequence, using TOFD (time of flight diffraction) for multi-channel data acquisition, turning to the connection with an instrument system, performing setting of parameters and setting of a scanner, meeting the need of calibrating sensitivity, well setting the parameters of an instrument, adjusting the sensitivity, then turning to scanning of a workpiece, further performing flaw detection on the workpiece and then saving and analyzing the data after the flaw detection, thereby enabling a person which is not clear about the items adjusted by the TOFD to be capable of completing the setting of the parameters through guidance, simplifying the steps of an operation project, being capable of fast performing operation setting, being very convenient to operate and greatly reducing cost of the whole items.

Description

The quick adjusting process of diffraction time difference method Ultrasonic Detection

Technical field

The present invention relates to a kind of parameter setting method, be specifically related to the quick adjusting process of a kind of diffraction time difference method Ultrasonic Detection.

Background technology

Its mode of operation of traditional nondestructive testing instrument is very complicated, menu item wherein also relatively disperses, the step that operates is too loaded down with trivial details, so not only need operating personnel that abundant technical experience is arranged, whole setting and calibration process also can expend the plenty of time, and whole process is because artificial carelessness also can be omitted some parameter setting and operating process.Because Non-Destructive Testing industry characteristic, usually the new Digital checkout equipment personnel that require to accept for the first time this instrument will have understanding clearly to operating system menu and corresponding calibration, setting up procedure, before using for a long time, repeatedly the debugging of instrument is carried out in to specifications requirement, could grasp the use of a certain instrument.And now we by a kind of new method, the whole adjustment process of original scatter operation has been combined in together, detect knowledge as long as make the people of first this instrument of contact possess some, also can finish the adjustment process of whole instrument very complete, very skilled, very accurately, and then finish testing exactly.

Summary of the invention

The problem to be solved in the present invention is certain fixing step to be adjusted simplifications such as detecting pattern, data, the projects combo that was dispersed in the needs adjustment in the various menu originally together, adjusted stepwise makes TOFD is adjusted the setting that the not clear people of project also can finish parameter by guide in sequence.

For addressing the above problem, the present invention is achieved through the following technical solutions: the quick adjusting process of diffraction time difference method Ultrasonic Detection, adjust detecting pattern according to detecting needs by certain fixing step, data etc., the projects combo that was dispersed in the needs adjustment in the various menu originally together, adjusted stepwise in sequence, the TOFD multi-channel data acquisition, entering instrument system connects, carry out parameter setting and scanner setting, need sensitivity calibration, set in instrument parameter, adjust after the sensitivity, enter the workpiece scanning, workpiece flaw detection again, the data of carrying out of detecting a flaw out are then preserved and are analyzed, comprise part is set, adjustment part and master menu setting, its specific implementation process may further comprise the steps

A, be provided with the part step as follows,

A1), enter guide after, ' detection information ' hurdle selects the back to eject dialog box, input dialogue frame information on request, after preserving file, information according to input forms filename in proper order, and ' application standard ' provides the used standard that detects, for the detection scheme of back provides range of choice;

A2), this step is provided with the workpiece situation, wherein the choice relation of ' workpiece shape ' is to the selection of scanning position, ' workpiece shape ' provides three kinds of selections is ' flat board ', ' external diameter ' and ' internal diameter ';

A3), this step is to the port number of scanning with select to be provided with when prepass, if not selecting ' increase ' operates, this works as prepass and is defaulted as the TOFD pattern, increase PC or PE pattern if desired, then select ' increase ' to operate, increasing provides ' PC one receives one ', ' PE pulse echo ' and ' closing ' 3 kinds of selections, is defaulted as closed condition;

A4), this step shows the pattern that emission receives and controls institute's corresponding interface, provide ' one one receipts of PC ', ' PE pulse echo ' and ' TOFD time difference diffraction ' three kind of pattern, select wherein a kind of pattern to carry out next step setting, ' pulse producer ' and ' receiver ' is used for docking port and selects and define.

The step of b, adjustment part is as follows,

B1), enter calibration after, enter next step setting;

B2), this step shows total port number and selects the current passage that needs calibration;

B3), this step shows provides 3 kinds of type of calibration ' scrambler ', ' sensitivity ', ' ultrasonic ' calibration, wherein ' scrambler ' and ' sensitivity ' calibration is to carry out before detecting, being shown as adjustable is the black font state, ' ultrasonic ' calibration then is to finish A that the back obtains scanning in scanning to sweep and sweep image with B and calibrate, this ' ultrasonic ' is calibrated to the time-delay and the velocity of sound of voussoir and calibrates, and selects wherein a kind of type of calibration to carry out next step setting;

C, master menu setting comprise basic setup, gate/warning, and emission/reception shows, measures channel arrangement, scanning setting, file.

Select the TOFD pattern to carry out next step in the described a3 step and be provided with, described TOFD time difference diffraction pattern is the pattern of two probe work in combination, may further comprise the steps,

This step is probe and voussoir Information Selection, it is self-defined that frequency probe provides, 1MHz, 1.25MHz, 2MHz, 2.5MHz, 4MHz, 5MHz, 10MHz is selective, be customized for the selected frequency probe of manual input, also can select suitable probe according to the depth of focus, for example thin plate can with selection have self-defined, 5MHz, these three kinds of 10MHz, other frequencies are grey, be in the state that to select, same principle wedge angle provides: 45 °, 60 °, 70 ° and self-defined three kinds, provide different selections according to depth of focus difference, it is not optional that inappropriate angle is in gray states;

This step is the selection of scanning type and the setting of skew, and wherein scanning type provides ' parallel ' and ' non-parallel ' dual mode to select altogether, can select according to detecting needs;

This step is used for being provided with the PCS value, and the selection of front workpiece shape is provided with the depth of focus, can generate the PCS value of recommendation automatically, and the PCS value perhaps oneself is set as required,

The computing formula of dull and stereotyped PCS value is

θ is the angle of voussoir; T is the depth of focus of definition;

The computing formula of external diameter PCS value is selected at dull and stereotyped outside scanning, because condition restriction can only calculate the arc length between two center probes,

R is a workpiece diameter, and R is the workpiece external diameter, and t is the depth of focus, and θ is the angle of voussoir, solves the angle of β value according to following formula, calculates inboard arc length again, cos β＞0,

β is the angle value that following formula calculates, and R is an external diameter, and PCS value herein is the arc length of two center probes,

The computing formula of internal diameter PCS value is R is a workpiece diameter, and t is the depth of focus, and θ is the angle of voussoir, solves the angle of β value according to following formula, calculates inboard arc length again, cos β＞0, and the arc length distance is under the internal diameter situation β is the angle value that following formula calculates, and r is an internal diameter, and PCS value herein is the arc length of two center probes.

Select one one receipts pattern of PC to carry out next step setting in the described a3 step, one one receipts pattern of described PC is the pattern of two probe work in combination, ' depth of focus ' of this step need provide ' one times of thickness of slab of T ', ' two times of thicknesss of slab of 2T ' and ' self-defined ' three kinds of selections according to scanning, wherein T is a thickness of slab, θ is the probe refraction angle, when selecting ' one times of thickness of slab of T ' and ' two times of thicknesss of slab of 2T ', system calculates the PCS value automatically, when selecting ' self-defined ', the PCS value of probe can be set as required voluntarily, and computing formula is automatically

The computing formula of one times of thickness of slab is

The computing formula of two times of thicknesss of slab is

Select PE pulse echo pattern to carry out next step setting in the described a3 step, described PE pulse echo is single probe mode of operation, ' depth of focus ' of this step need provide ' one times of thickness of slab of T ', ' two times of thicknesss of slab of 2T ' and ' self-defined ' three kinds of selections according to scanning, wherein T is a thickness of slab, θ is the probe refraction angle, when selecting ' one times of thickness of slab of T ' and ' two times of thicknesss of slab of 2T ', system calculates the stepping off-set value automatically, when selecting ' self-defined ', the stepping off-set value of probe can be set voluntarily as required; Automatically computing formula is as follows:

Type of calibration is an encoder calibration in the described b3 step, and its step is as follows,

When the resolution position of scrambler, keeping ' resolution ' column number value is 0, enters the encoder calibration menu;

This step is located the distance that the calibration of input coding device will be passed by in ' distance ', and the distance that allows scrambler pass by and to stipulate from reference position by straight line path, stops after reaching home, and presses aligning key, and then system generates the resolution of scrambler automatically, shows in subordinate;

This step is the resolution that generates according to automatically, instrument is automatically associated in the option of master menu scrambler, finish the calibration of scrambler, manual adjustments instrumental sensitivity or reenter adjustment and select sensitivity calibration, perhaps select ' sensitivity calibration ' to enter the automatic setting of sensitivity, if the calibration to scrambler has a question, optional ' restarting ' returns the calibration of carrying out scrambler again.

When knowing the resolution of scrambler, in ' resolution ' hurdle input coding device resolution, enter subordinate's menu, and the encoder resolution of input herein is related with the resolution of scrambler in the master menu automatically.

Type of calibration is sensitivity calibration in the described b3 step, and its step is as follows,

This step is determined indication range, initial, waveform height etc. by the button of regulating this step;

This step ' emission voltage ' provides the 100V/200V/300V/400V fourth gear selective (or reference prototype specifically is provided with); Pulse width can be provided with two kinds of selections, i.e. ' automatically ' and ' 100 ' two kinds, and ' pulse repetition rate ' also is provided with ' automatically ' and ' 100 ' two kinds of patterns;

This step ' wave filter ' provides following selection according to frequency probe: nothing, 1MHz, 1.25MHz, 2MHz, 2.5MHz, 4MHz, 5MHz, 10MHz are selective; ' wave detector ' provides ' positive detection ', ' negative detection ', ' full detection ' and ' radio frequency ' 4 kinds of patterns, ' on average ' is used for signal is averaged processing, the average time of mainly using has: 1/2/4/8/16, suppress ' be to be used for leaching being lower than suppressing ripple highly;

This step ' scanning is initial ' and ' scanning termination ' are used for determining the length of a scanning, ' scanning resolution ' is used for the collection of control signal, ' Scanning speed ' is used for the maximum Scanning speed of regulation, it is to be to select in the mode of time or the mode of scrambler positions in the scanning process that the location is selected

This step is the selection of view aspect, wherein ' view ' option provides 3 kinds of model selections ' A sweep ', ' B scanning ' and ' A-B scanning ', when ' grid ' menu is selected to close, ' ultrasonic unit ' is used for selecting A to sweep the unit of display of regional transverse axis, can be ' sound path ', also can be ' time ' that ultrasonic unit commonly used was the time during TOFD detected;

The calibration of scanning data is that the voussoir time-delay and the velocity of sound are calibrated in the described b3 step, and step is as follows,

This step ' type ' is the adjustment type, selects ' ultrasonic ', and ' pattern ' is the adjustment object, selects ' voussoir time-delay ', can begin to have carried out the voussoir delay calibration;

This step is the information of definition workpiece scanning;

This step ' reference point ' is to be used for selecting the A that calibrates the voussoir time-delay to sweep image, the scope of reference point to final position, covers the scope of scanning from the reference position of scanning, selects B to sweep certain reference point on the image, the A that then shows corresponding point sweeps waveform, is used as the voussoir delay calibration and uses;

This step ' UT (reference point) ' is the A that is used for confirming calibrating the voussoir time-delay position of sweeping waveform; ' TOFD (reference point) ' is to be used for confirming partly calibrating with which of workpiece;

This step voussoir delay calibration finishes, and the result who obtains is unadjustable state, and ' determining ' is automatically associated to the corresponding menu of system, and ' restarting ' key carries out the voussoir delay calibration again;

Wherein internal diameter is identical with dull and stereotyped account form, Selecting the propagation distance of straight-through ripple calibration is the PCS value, and propagation distance is the arc length between two center probes in the time of the scanning of curved surface inboard, in the time of the calibration of selection end ripple, propagation distance is sound path, and the propagation distance of this moment is that wherein r is a workpiece diameter, T is a thickness of slab, and R is the workpiece external diameter

Dull and stereotyped:

Internal diameter:

External diameter scanning account form:

Adopt the propagation distance=2Rsin β of straight-through ripple calibration,

The velocity of sound can be calculated by the mistiming and the path difference of straight-through ripple and end ripple, and the velocity of sound is calculated as follows,

The sound path of wherein straight-through ripple and end ripple calculates corresponding formula in the voussoir delay calibration, the mistiming of straight-through ripple and end ripple then can be by the numerical evaluation difference of instrument demonstration, mistiming=UT (the reference point)-UT (measurement point) of straight-through ripple and end ripple.

It is to adjust detecting pattern, data etc. according to detecting needs by certain fixing step that the present invention adopts the quick adjusting process of parameter, the projects combo that was dispersed in the needs adjustment in the various menu originally together, adjusted stepwise in sequence, make TOFD is adjusted the setting that the not clear people of project also can finish parameter by guide, the step of operation engineering is oversimplified, can be carried out operation setting fast.

Description of drawings

Fig. 1 is a work disposal process flow diagram of the present invention;

Fig. 2 is a program flow diagram of the present invention;

Fig. 3 is the detector circuit block diagram of embodiments of the invention.

Embodiment

Embodiment one: with reference to shown in Figure 1, the TOFD multi-channel data acquisition enters instrument system and connects, carries out parameter setting and scanner setting, enters the workpiece scanning, needs sensitivity calibration, workpiece flaw detection again, and the data of carrying out of detecting a flaw out are at last preserved and are analyzed.

As shown in Figure 3, logic control circuit connects external unit by interface circuit, described logic control circuit and pulse radiating circuit transmit by transmitter, the A/D change-over circuit is arranged again and receive amplifying circuit by the receiver received signal, interface circuit connects the scanning position sensor circuit, and by the position transducer induction, interface circuit is connected in the computer system, the computer system control image display utilizes the button operation program.

Embodiment two: as shown in Figure 2, internal interface reads UDP message and enters data check, finishes after depositing formation in; Read queuing data, enter mode of operation and select, three kinds of selections are provided, drafting A sweeps figure, drafting B sweeps figure and drafting A+B sweeps figure, finishes then.

External interface is the I/O interface, VGA 82810 built-in AGP2X graphics acceleration cards

IDE ATA-33/66, binary channels

The contact pin that USB carries by plate is drawn two USB interfaces, meets the USB1.1 standard

The compatible RS-232 interface of two 16C550 UART of Super I/O

Support printing, floppy drive, PS2 keyboard and mouse interface

Encoder interfaces EnDat2.2 data-interface

Embodiment three: input parameter is provided with title, click next step, carry out the setting of workpiece situation, the scanning face of selection, scanning face provides three kinds of selection modes, the plane, the curved surface outside and curved surface inboard, selecting ' external diameter ' expression scanning face at this moment is the outside of curve surface work pieces butt joint longitudinal joint, ' diameter ' item of this moment is adjustable, and the external diameter of input workpiece selects ' internal diameter ' to represent that the scanning face of this moment is the inboard that curve surface work pieces docks longitudinal joint, ' diameter ' item of this moment also is adjustable, input inner diameter of workpiece, the scanning mode of selecting parameter are non-parallel or select parallelly, enter next step and select detection method.

Three kinds of preference patterns are that TOFD time difference diffraction pattern, PC one receive one and PE pulse echo pattern;

(1) if select TOFD time difference diffraction pattern, input TOFD time difference diffraction is clicked and is entered next step,

Probe and voussoir Information Selection, that frequency probe provides is self-defined, 1MHz, 1.25MHz, 2MHz, 2.5MHz, 4MHz, 5MHz, 10MHz are selective, be customized for the selected frequency probe of manual input, also can select suitable probe according to the depth of focus, for example thin plate can with selection these three kinds of self-defined, 5MHz, 10MHz are arranged, other frequencies are grey, are in the state that can not select.Same principle wedge angle provides: 45 °, 60 °, 70 ° and self-defined three kinds, provide different selections according to depth of focus difference, and it is not optional that inappropriate angle is in gray states; Set scanning step value and off-set value,

The PCS value oneself is set as required again;

To with above-mentioned flat board, the computing formula of its PCS value is:

Wherein: θ is the angle of voussoir; T is the depth of focus of definition;

For external diameter, promptly be chosen in dull and stereotyped outside scanning, because condition restriction can only calculate the arc length between two center probes, the formula religion is complicated:

$R^2+{[r+(T-t)]}^2-2R[r+(T-t)]\cos \mathrm{\β}={\left[\frac{r+(T-t)\sin \mathrm{\β}}{\sin \mathrm{\θ}}\right]}^2$

In the following formula: r is a workpiece diameter, and R is the workpiece external diameter, and t is the depth of focus, and θ is the angle of voussoir, solves the angle of β value according to following formula, calculates inboard arc length again, cos β＞0;

β is the angle value that following formula calculates, and R is an external diameter, and PCS value herein is the arc length of two center probes.

For internal diameter:

${(r+t)}^2+r^2-2r(r+t)\cos \mathrm{\β}={\left[\frac{(r+t)\sin \mathrm{\β}}{\sin \mathrm{\θ}}\right]}^2$

In the following formula: r is a workpiece diameter, and t is the depth of focus, and θ is the angle of voussoir, solves the angle of β value according to following formula, calculates inboard arc length again, cos β＞0;

The arc length distance is as follows under the internal diameter situation:

β is the angle value that following formula calculates, and r is an internal diameter, and PCS value herein is the arc length of two center probes.

For the PCS value of TOFD, automated evaluation procedure can be set according to top formula realize.

(2) if select PC one to receive a pattern, input PC one receives one, click next step, ' depth of focus ' that occur herein need provide ' one times of thickness of slab of T ', ' two times of thicknesss of slab of 2T ' and ' self-defined ' three kinds of selections according to scanning, when selecting ' one times of thickness of slab of T ' and ' two times of thicknesss of slab of 2T ', system calculates the PCS value automatically, when selecting ' self-defined ', the PCS value of probe can be set as required voluntarily, and computing formula is as follows automatically: when selecting one times of thickness of slab:

When selecting two times of thicknesss of slab:

Wherein T is a thickness of slab, and θ is the probe refraction angle; Enter

(3) if select PE pulse echo pattern, input PE pulse echo is clicked next step,

' depth of focus ' need provide ' one times of thickness of slab of T ', ' two times of thicknesss of slab of 2T ' and ' self-defined ' three kinds of selections according to scanning, when selecting ' one times of thickness of slab of T ' and ' two times of thicknesss of slab of 2T ', system calculates the stepping off-set value automatically, when selecting ' self-defined ', the stepping off-set value of probe can be set voluntarily as required; Automatically computing formula is as follows:

When selecting one times of thickness of slab:

When selecting two times of thicknesss of slab:

Wherein T is a thickness of slab, and θ is the probe refraction angle;

Embodiment four: the adjustment part, begin to enter adjustment, and click " initial " key

Select total port number and the current passage that needs calibration, click and enter next step,

Provide three kinds of type of calibration selective, ' scrambler ', ' sensitivity ' and ' ultrasonic ', wherein ' scrambler ' and ' sensitivity ' calibration is to carry out before detecting, being shown as adjustable is the black font state, ' ultrasonic ' calibration then is to finish A that the back obtains scanning in scanning to sweep and sweep image with B and calibrate, when not opening a scanning when finishing the data file of formation, appear dimmed, for can not the adjustment state; A plurality of scramblers can be calibrated according to the numbering of scrambler, as top scrambler 1, enter different calibration menus according to different mode below,

(1) encoder calibration enters next step;

The adjustment of scrambler herein provides two kinds of patterns, when knowing the resolution of scrambler, can be in the resolution of the direct input coding device in ' resolution ' hurdle, enter subordinate's menu after clicking ' next step ', and the encoder resolution of input herein is related with the resolution of scrambler in the master menu automatically; When the resolution position of scrambler, keeping ' resolution ' column number value is 0, imports reference position (being generally 0), then enters the calibration menu of scrambler;

This is the dialog box after the input coding device resolution, can select ' end ', manual adjustments instrumental sensitivity or reenter adjustment and select sensitivity calibration; Perhaps select ' sensitivity calibration ' to enter the automatic setting of sensitivity;

Locate the distance that the calibration of input coding device will be passed by in ' distance ', and the distance that allows scrambler pass by and to stipulate from reference position by straight line path, stop after reaching home, press aligning key, then system generates the resolution of scrambler automatically, shows in subordinate;

According to the resolution of automatic generation, instrument is automatically associated in the option of master menu scrambler, can select ' end ', finishes the calibration of scrambler, manual adjustments instrumental sensitivity or reenter adjustment and select sensitivity calibration; Perhaps select ' sensitivity calibration ' to enter the automatic setting of sensitivity; If the calibration to scrambler has a question, optional ' restarting ' returns the calibration of carrying out scrambler again;

(2) select the sensitivity calibration type,

When ' sensitivity ' is selected in calibration ' type ', can work as the adjusting of the sensitivity of prepass, the back is used for confirming when prepass shows, has selected the passage of calibration in step 2;

After connecting probe, determine indication range, initial, waveform height etc. by the button of regulating this step;

' emission voltage ' provides the 100V/200V/300V/400V fourth gear selective (or reference prototype specifically is provided with); Pulse width can be provided with two kinds of selections, i.e. ' automatically ' and ' 100 ' two kinds.When selecting ' automatically ', instrument is selected suitable pulse width automatically, and in the time of selection ' 100 ', pulse width is 100ns, and is to be 1 adjustable numeral with step value; ' pulse repetition rate ' also is provided with ' automatically ' and ' 100 ' two kinds of patterns, when selecting ' automatically ', instrument is selected suitable pulse repetition rate automatically, when selecting ' 100 ', pulse repetition rate is 100, and is to be 1 adjustable numeral with step value;

' wave filter ' provides following selection according to frequency probe: do not have (this moment, wave filter cut out), 1MHz, 1.25MHz, 2MHz, 2.5MHz, 4MHz, 5MHz, 10MHz is selective; ' wave detector ' provides ' positive detection ', ' negative detection ', ' full detection ' and ' radio frequency ' 4 kinds of model selections, wherein in the time of this channel selecting ' TOED ' pattern, wave detector is defaulted as ' radio frequency ' pattern, in the time of this channel selecting ' one one receipts of PC ' and ' PE pulse echo ', wave detector is defaulted as ' full detection ' pattern; ' on average ' is used for signal is averaged processing, and the average time of mainly using has: 1/2/4/8/16, can regulate according to the concrete average time option that model machine provides; ' inhibition ' is to be used for leaching being lower than the ripple that suppresses height, reaching under the situation of suitable signal to noise ratio (S/N ratio), for preventing that defect waves by filtering, is traditionally arranged to be 0%;

' scanning is initial ' and ' scanning termination ' is used for determining the length of a scanning, and ' scanning resolution ' is used for the collection of control signal, i.e. scanning resolution is more little, and signals collecting is many more, and data volume is big more; ' Scanning speed ' is used for the maximum Scanning speed of regulation, and relevant with encoder resolution, scanning resolution etc., the excessive signal that causes easily of Scanning speed is damaged, and B sweeps the gray area of figure formation no signal; It is to be to select in the mode of time or the mode of scrambler positions in the scanning process that the location is selected, select scrambler under the manual case, but machinery uniform scanning select time mode, herein ' location is selected ' provides three kinds of preference patterns, i.e. ' scrambler 1 ', ' scrambler 2 ' and ' time ';

The selection of view aspect, wherein ' view ' option provides 3 kinds of model selections ' A sweep ', ' B scanning ' and ' A-B scanning ', in this debugging step, observes preferential selection ' A sweep ' and ' A-B scanning ' for convenient;

When ' grid ' menu was selected to close, A sweeps the viewing area did not have grid, and ' grid ' menu can provide the grid of multiple color, observed the waveform height in the time of for detection and used; ' ultrasonic unit ' is used for selecting A to sweep the unit of display of regional transverse axis, can be ' sound path ', also can be ' time ', and ultrasonic unit commonly used was the time during TOFD detected;

Finish the adjustment process, return the UT setting option, can begin to detect by ' end ' back System menu;

Scanning can be carried out ultrasonic sound velocity calibration and voussoir delay calibration earlier to the data result that scanning obtains after finishing;

When opening the data that a scanning finishes, open the adjustment interface in the master menu, ' type ' is the adjustment type, selects ' ultrasonic '; ' pattern ' is the adjustment object, selects ' voussoir time-delay '; Can begin to have carried out the voussoir delay calibration;

This is used for defining the information of workpiece scanning;

' reference point ' is to be used for selecting the A that calibrates the voussoir time-delay to sweep image, and the scope of reference point to final position, covers the scope of scanning from the reference position of scanning; Selection B sweeps certain reference point on the image, shows that then the A of corresponding point sweeps waveform, is used as the voussoir delay calibration and uses;

This ' UT (reference point) ' is the A that is used for confirming calibrating the voussoir time-delay position of sweeping waveform; ' TOFD (reference point) ' is to be used for confirming partly calibrating with which of workpiece, can be ' 0 ', promptly using straight-through ripple calibration, can be ' 40 ', promptly uses end ripple calibration, after selected TOFD reference point, the UT reference point is moved to first trough that leads directly to first crest of ripple or end ripple, press ' calibration ', can carry out the calibration of voussoir time-delay, system calculates the voussoir time-delay automatically, and computation process is divided 2 kinds of modes:

Wherein internal diameter is identical with dull and stereotyped account form:

When select straight-through ripple calibrate the time, propagation distance is a PCS value, propagation distance is the arc length between two center probes in the time of the scanning of curved surface inboard;

When select end ripple calibrate the time, propagation distance is sound path, the propagation distance of this moment is:

Flat board,

Internal diameter,

Wherein r is a workpiece diameter, and T is a thickness of slab;

The external diameter account form:

When adopt straight-through ripple calibrate the time:

Propagation distance=2Rsin β

When adopting end ripple to calibrate:

Wherein R is the workpiece external diameter, and T is a thickness of slab;

The voussoir delay calibration finishes, and the result who obtains be unadjustable state, press ' determining ' key after the result be automatically associated to system's correspondence menu, if having doubt to carry out the voussoir delay calibration again by ' restarting ' key to calibration result;

Voussoir time-delay and sound velocity calibration: click and enter next step,

Metering system: by above-mentioned setting, note the travel-time of straight-through ripple position and the travel-time of ripple position, the end, the voussoir available straight-through ripple of delaying time calculates, and the velocity of sound can be calculated by the mistiming and the path difference of straight-through ripple and end ripple, and the velocity of sound is calculated as follows:

The sound path of wherein straight-through ripple and end ripple calculates corresponding formula in the voussoir delay calibration, the mistiming of straight-through ripple and end ripple then can be by the numerical evaluation difference of instrument demonstration,

Mistiming=UT (the reference point)-UT (measurement point) of straight-through ripple and end ripple,

After setting is finished, press aligning key and can calibrate the voussoir time-delay and the velocity of sound;

Voussoir time-delay and sound velocity calibration finish, and the result who obtains is unadjustable state, press ' determining ' key after the result be automatically associated to system's correspondence menu, if having doubt to carry out the voussoir delay calibration again by ' restarting ' key to calibration result;

Embodiment five: the master menu setting comprises following setting,

Basic setup:

The basic setup menu is changed little, mainly be ' initial ' and ' scope ' these two to want affix unit, and this unit of two changes, when transverse axis was represented with the time, unit is the us of chronomere, and when transverse axis was represented with sound path, unit was long measure mm; ' voussoir time-delay ' and the unit of ' velocity of sound ' are constant;

Gate/warning

' gate ' item is used for selecting certain gate and carries out the gate setting, and the unit of ' gate width ' and ' gate is initial ' is determined by the unit that transverse axis shows, can be the us of chronomere, also can try long measure mm; ' gate demonstration ' provides 4 options, is respectively: close, A, B and A-B, be used for selecting the gate display mode; ' warning ' item is used for controlling ' unlatching ' and ' closing ' of warning;

Emission/reception:

Emission voltage ' provide 50V selective to several gears of 400V; ' pulse width ' preferably can provide ' automatically ' to select like this except that supporting manual adjustments, is that system forms best pulse width automatically; ' pulse repetition rate ' also preferably can provide ' automatically ' to select like this except that supporting manual adjustments, is that system forms best pulse repetition rate automatically; ' wave detector ' provides 4 kinds of detection modes selective: positive detection, negative detection, full detection and RF-wise; ' wave filter ' provides and closes and self-defining option, self-definedly can import frequency filtering; ' on average ' provides the average treatment of signal; ' inhibition ' function is used for filtering and is lower than and suppresses the clutter that number percent is provided with;

Show:

' view ' provides A demonstration, B to show and A-B shows that these 3 kinds of options are selective; ' ultrasonic unit ' provides ' time ', ' dark journey ' and ' real depth ' these 3 kinds of options selective, is used for controlling the display mode of transverse axis; ' grid ' item is except closing, and other preferably directly provide color to select, and to show the grid of different colours, adapts to testing environment; Other are temporarily left a blank;

Measure:

' data pointer ' is used for sweeping selected some positions on the image at B, form corresponding A and sweep signal, by ' with reference to (UT) ' with ' measure (UT) ' two pointer and sweep at A and determine on the signal that the initial sum of defective on short transverse stops, by ' with reference to (TOFD) ' with ' measure (TOFD) ' two pointer and sweep definite curve initial sum termination in the longitudinal direction on the image at B; ' data ' are used for fast opening data folder, are used for choosing the scanning data and analyze;

Channel arrangement:

' channel status ' is used for the switch of control channel; ' receiving/send out pattern ' is used for selecting instrument to work as the mode of operation of prepass, and it is selective to provide TOFD time difference diffraction, PE pulse echo and one one of PC to receive these 3 kinds of patterns; Several of back are used for the probe and the information of voussoir are imported, and wherein ' probe type ' is used for selecting the type of the probe that uses, provide 3 kinds selective: normal probe, angle probe and TOFD pop one's head in; The information of other probe and voussoir is determined by input digit;

Scanning is provided with:

' scanning type ' provides single line scanning, grating scanning and spiral scanning, and the single line scanning is selected in general flaw detection for use; ' scanning mode ' provides ' parallel ' and ' non-parallel ' two selections according to the needs of TOFD detection mode; 3 kinds of selections ' time ', ' scrambler 1 ' and ' scrambler 2 ' these 3 kinds of selections are selected to provide in the location; ' center probe distance ', ' step value ', ' off-set value ' are for importing; ' scanning resolution ' is also for importing; Scrambler: (the scanning menu renames scrambler as)

File:

After ' opening ' click, provide 3 kinds of selections: setting, data and image, setting is file is set, ejection is provided with the window of file, and the file of need selecting that is provided with determines that also this is provided with automatic covering of file and works as prepass, data are the result data of scanning, can carry out data analysis, the scanning result that image is promptly preserved with the picture form opens the selected file that needs to select of different files by these 3 of optants and opens; ' setting saves as ' is used for preserving file is set, and can eject the file designation that is provided with that dialog box is given needs preservation, presses acknowledgement key and finishes name, and show the title that name is finished on ' setting saves as '; After detection is finished, go up the preserving type of selection result in ' maintenance pattern ', can be ' picture ', also can be ' detection data ', selects as required, after the selected pattern, in filename and the affirmation that ' filename ' goes up input results,, then can preserve testing result with the filename of input again by ' preservation data ', workpiece information ejects following menu after selecting and pressing:

The choice relation of ' workpiece shape ' is to the selection of scanning position, ' workpiece shape ' provides three kinds of selections ' flat board ', ' external diameter ' and ' internal diameter ', ' flat board ' pattern does not need too much explanation, selecting ' external diameter ' expression scanning face at this moment is the outside of curve surface work pieces butt joint longitudinal joint, ' diameter ' item of this moment is adjustable, the external diameter of input workpiece; Selection ' internal diameter ' expression scanning face at this moment is the inboard of curve surface work pieces butt joint longitudinal joint, and ' diameter ' item of this moment also is adjustable, the input inner diameter of workpiece; Select ' closing ' then to withdraw from current workpiece information dialog box, return ' file ' menu;

If select ' system's setting ' in ' file ' menu, then eject following menu:

By these options system information is provided with, wherein ' software version ' is uncontrollable; Select ' closing ' then to turn back to ' file ' menu;

Adjustment is finished and is entered detection, pushes away scanning frame debugging scrambler during detection earlier, selects " just "/" bearing " to earlier artificial defective/" " reach suitable effects, data are preserved in scanning again in gain to check the adjustment of each channel image.

Claims (10)

1. the quick adjusting process of diffraction time difference method Ultrasonic Detection, it is characterized in that: adjust detecting pattern by certain fixing step according to detecting needs, data etc., the projects combo that was dispersed in the needs adjustment in the various menu originally together, adjusted stepwise in sequence, the TOFD multi-channel data acquisition, entering instrument system connects, carry out parameter setting and scanner setting, need sensitivity calibration, set, adjust after the sensitivity in instrument parameter, enter the workpiece scanning, workpiece flaw detection again, the data of carrying out of detecting a flaw out are then preserved and are analyzed, and comprise part is set, adjustment part and master menu setting, its specific implementation process may further comprise the steps

A, be provided with the part step as follows,

A1), enter guide after, ' detection information ' hurdle selects the back to eject dialog box, input dialogue frame information on request, after preserving file, information according to input forms filename in proper order, and ' application standard ' provides the used standard that detects, for the detection scheme of back provides range of choice;

A2), this step is provided with the workpiece situation, wherein the choice relation of ' workpiece shape ' is to the selection of scanning position, ' workpiece shape ' provides three kinds of selections is ' flat board ', ' external diameter ' and ' internal diameter ';

A3), this step is to the port number of scanning with select to be provided with when prepass, if not selecting ' increase ' operates, this works as prepass and is defaulted as the TOFD pattern, increase PC or PE pattern if desired, then select ' increase ' to operate, increasing provides ' PC one receives one ', ' PE pulse echo ' and ' closing ' 3 kinds of selections, is defaulted as closed condition;

A4), this step shows the pattern that emission receives and controls institute's corresponding interface, provide ' one one receipts of PC ', ' PE pulse echo ' and ' TOFD time difference diffraction ' three kind of pattern, select wherein a kind of pattern to carry out next step setting, ' pulse producer ' and ' receiver ' is used for docking port and selects and define.

The step of b, adjustment part is as follows,

B1), enter calibration after, enter next step setting;

B2), this step shows total port number and selects the current passage that needs calibration;

B3), this step shows provides 3 kinds of type of calibration ' scrambler ', ' sensitivity ', ' ultrasonic ' calibration, wherein ' scrambler ' and ' sensitivity ' calibration is to carry out before detecting, being shown as adjustable is the black font state, ' ultrasonic ' calibration then is to finish A that the back obtains scanning in scanning to sweep and sweep image with B and calibrate, this ' ultrasonic ' is calibrated to the time-delay and the velocity of sound of voussoir and calibrates, and selects wherein a kind of type of calibration to carry out next step setting;

C, master menu setting comprise basic setup, gate/warning, and emission/reception shows, measures channel arrangement, scanning setting, file.

2. the quick adjusting process of diffraction time difference method Ultrasonic Detection according to claim 1 is characterized in that: select the TOFD pattern to carry out next step in the described a3 step and be provided with, described TOFD time difference diffraction pattern is the pattern of two probe work in combination, may further comprise the steps,

This step is probe and voussoir Information Selection, it is self-defined that frequency probe provides, 1MHz, 1.25MHz, 2MHz, 2.5MHz, 4MHz, 5MHz, 10MHz is selective, be customized for the selected frequency probe of manual input, also can select suitable probe according to the depth of focus, for example thin plate can with selection have self-defined, 5MHz, these three kinds of 10MHz, other frequencies are grey, be in the state that to select, same principle wedge angle provides: 45 °, 60 °, 70 ° and self-defined three kinds, provide different selections according to depth of focus difference, it is not optional that inappropriate angle is in gray states;

This step is the selection of scanning type and the setting of skew, and wherein scanning type provides ' parallel ' and ' non-parallel ' dual mode to select altogether, can select according to detecting needs;

This step is used for being provided with the PCS value, and the selection of front workpiece shape is provided with the depth of focus, can generate the PCS value of recommendation automatically, and the PCS value perhaps oneself is set as required,

The computing formula of dull and stereotyped PCS value is

θ is the angle of voussoir; T is the depth of focus of definition;

The computing formula of external diameter PCS value is selected at dull and stereotyped outside scanning, because condition restriction can only calculate the arc length between two center probes,

R is a workpiece diameter, and R is the workpiece external diameter, and t is the depth of focus, and θ is the angle of voussoir, solves the angle of β value according to following formula, calculates inboard arc length again, cos β＞0,

β is the angle value that following formula calculates, and R is an external diameter, and PCS value herein is the arc length of two center probes,

The computing formula of internal diameter PCS value is

R is a workpiece diameter, and t is the depth of focus, and θ is the angle of voussoir, solves the angle of β value according to following formula, calculates inboard arc length again, cos β＞0, and the arc length distance is under the internal diameter situation

β is the angle value that following formula calculates, and r is an internal diameter, and PCS value herein is the arc length of two center probes.

3. the quick adjusting process of diffraction time difference method Ultrasonic Detection according to claim 1, it is characterized in that: select one one receipts pattern of PC to carry out next step setting in the described a3 step, one one receipts pattern of described PC is the pattern of two probe work in combination, ' depth of focus ' of this step need provide ' one times of thickness of slab of T ' according to scanning, ' two times of thicknesss of slab of 2T ' and ' self-defined ' three kinds of selections, wherein T is a thickness of slab, θ is the probe refraction angle, when selecting ' one times of thickness of slab of T ' and ' two times of thicknesss of slab of 2T ', system calculates the PCS value automatically, when selecting ' self-defined ', the PCS value of probe can be set as required voluntarily, and computing formula is automatically

The computing formula of one times of thickness of slab is

The computing formula of two times of thicknesss of slab is

4. the quick adjusting process of diffraction time difference method Ultrasonic Detection according to claim 1, it is characterized in that: select PE pulse echo pattern to carry out next step setting in the described a3 step, described PE pulse echo is single probe mode of operation, ' depth of focus ' of this step need provide ' one times of thickness of slab of T ' according to scanning, ' two times of thicknesss of slab of 2T ' and ' self-defined ' three kinds of selections, wherein T is a thickness of slab, θ is the probe refraction angle, when selecting ' one times of thickness of slab of T ' and ' two times of thicknesss of slab of 2T ', system calculates the stepping off-set value automatically, when selecting ' self-defined ', the stepping off-set value of probe can be set voluntarily as required; Automatically computing formula is as follows:

5. the quick adjusting process of diffraction time difference method Ultrasonic Detection according to claim 1 is characterized in that: type of calibration is an encoder calibration in the described b3 step, and its step is as follows,

When the resolution position of scrambler, keeping ' resolution ' column number value is 0, then enters the calibration menu of scrambler;

This step is located the distance that the calibration of input coding device will be passed by in ' distance ', and the distance that allows scrambler pass by and to stipulate from reference position by straight line path, stops after reaching home, and presses aligning key, and then system generates the resolution of scrambler automatically, shows in subordinate;

This step is the resolution that generates according to automatically, instrument is automatically associated in the option of master menu scrambler, finish the calibration of scrambler, manual adjustments instrumental sensitivity or reenter adjustment and select sensitivity calibration, perhaps select ' sensitivity calibration ' to enter the automatic setting of sensitivity, if the calibration to scrambler has a question, optional ' restarting ' returns the calibration of carrying out scrambler again.

6. the quick adjusting process of diffraction time difference method Ultrasonic Detection according to claim 5, it is characterized in that: when knowing the resolution of scrambler, can be in the resolution of the direct input coding device in ' resolution ' hurdle, enter subordinate's menu, and the encoder resolution of input herein is related with the resolution of scrambler in the master menu automatically.

7. according to the quick adjusting process of diffraction time difference method Ultrasonic Detection described in the claim 1, it is characterized in that: type of calibration is sensitivity calibration in the described b3 step, and its step is as follows,

This step is determined indication range, initial, waveform height etc. by the button of regulating this step;

This step ' emission voltage ' provides the 100V/200V/300V/400V fourth gear selective (or reference prototype specifically is provided with); Pulse width can be provided with two kinds of selections, i.e. ' automatically ' and ' 100 ' two kinds, and ' pulse repetition rate ' also is provided with ' automatically ' and ' 100 ' two kinds of patterns;

This step ' wave filter ' provides following selection according to frequency probe: do not have (this moment, wave filter cut out), 1MHz, 1.25MHz, 2MHz, 2.5MHz, 4MHz, 5MHz, 10MHz is selective; ' wave detector ' provides ' positive detection ', ' negative detection ', ' full detection ' and ' radio frequency ' 4 kinds of patterns, ' on average ' is used for signal is averaged processing, the average time of mainly using has: 1/2/4/8/16, suppress ' be to be used for leaching being lower than suppressing ripple highly;

This step ' scanning is initial ' and ' scanning termination ' are used for determining the length of a scanning, ' scanning resolution ' is used for the collection of control signal, ' Scanning speed ' is used for the maximum Scanning speed of regulation, it is to be to select in the mode of time or the mode of scrambler positions in the scanning process that the location is selected

This step is the selection of view aspect, wherein ' view ' option provides 3 kinds of model selections ' A sweep ', ' B scanning ' and ' A-B scanning ', when ' grid ' menu is selected to close, ' ultrasonic unit ' is used for selecting A to sweep the unit of display of regional transverse axis, can be ' sound path ', also can be ' time ' that ultrasonic unit commonly used was the time during TOFD detected.

8. the quick adjusting process of diffraction time difference method Ultrasonic Detection according to claim 1 is characterized in that: the calibration of scanning data is that the voussoir time-delay and the velocity of sound are calibrated in the described b3 step, and step is as follows,

This step ' type ' is the adjustment type, selects ' ultrasonic ', and ' pattern ' is the adjustment object, selects ' voussoir time-delay ', can begin to have carried out the voussoir delay calibration;

This step is the information of definition workpiece scanning;

This step ' reference point ' is to be used for selecting the A that calibrates the voussoir time-delay to sweep image, the scope of reference point to final position, covers the scope of scanning from the reference position of scanning, selects B to sweep certain reference point on the image, the A that then shows corresponding point sweeps waveform, is used as the voussoir delay calibration and uses;

This step ' UT (reference point) ' is the A that is used for confirming calibrating the voussoir time-delay position of sweeping waveform; ' TOFD (reference point) ' is to be used for confirming partly calibrating with which of workpiece;

This step voussoir delay calibration finishes, and the result who obtains is unadjustable state, and ' determining ' is automatically associated to the corresponding menu of system, and ' restarting ' key carries out the voussoir delay calibration again.

9. the quick adjusting process of diffraction time difference method Ultrasonic Detection according to claim 8 is characterized in that: wherein internal diameter is identical with dull and stereotyped account form,

Selecting the propagation distance of straight-through ripple calibration is the PCS value, and propagation distance is the arc length between two center probes in the time of the scanning of curved surface inboard, in the time of the calibration of selection end ripple, propagation distance is sound path, and the propagation distance of this moment is that wherein r is a workpiece diameter, T is a thickness of slab, and R is the workpiece external diameter

Dull and stereotyped:

Internal diameter:

External diameter scanning account form:

Adopt the propagation distance=2Rsin β of straight-through ripple calibration,

10. the quick adjusting process of diffraction time difference method Ultrasonic Detection according to claim 8 is characterized in that: the velocity of sound can be calculated by the mistiming and the path difference of straight-through ripple and end ripple, and the velocity of sound is calculated as follows,

The sound path of wherein straight-through ripple and end ripple calculates corresponding formula in the voussoir delay calibration, the mistiming of straight-through ripple and end ripple then can be by the numerical evaluation difference of instrument demonstration, mistiming=UT (the reference point)-UT (measurement point) of straight-through ripple and end ripple.

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