CN102621161B - Method for obtaining material performance parameter - Google Patents

Abstract

The invention provides a method for obtaining a material performance parameter. The method comprises the following steps of: carrying out fractional frequency processing on microwave signals in preset frequencies, and generating fractional frequency data corresponding to the frequencies of the microwave signals; obtaining reaction data of a tested material under the action of a preset external force by utilizing the microwave signals; and obtaining a stress value and a loss angle value of the tested material in the microwave signals according to the fractional frequency data and the reaction data. The method also comprises the following steps of: obtaining a preset displacement control value corresponding to the preset external force; obtaining a standard strain value corresponding to thedisplacement control value according to the relation between the displacement control value and a standard strain value; obtaining a test strain value of the tested material under the action of the preset external force; and calculating the displacement value, the standard strain value and the test strain value to obtain an actual strain value.

Description

A kind of material property parameter acquisition methods

Technical field

The present invention relates to material property detects and data processing field, particularly a kind of material property parameter acquisition methods.

Background technology

Before particularly high-end material is used to material, need to test the practical use of judging material according to material property parameter to its material property, wherein, material property parameter generally has stress value, strain value and loss angle value etc.

When the microwave signal that is in uniform temperature, certain frequency when material can not produce displacement under external force, deformation will occur in its geometric configuration and size, and this deformation is called strain.Inside has produced equal and opposite in direction but the acting force opposing external force of opposite direction during material generation deformation, and this reacting force on the unit area is called stress.And there is phase differential between the two in response lag stress, and this phase differential is loss angle.

But there is not at present a kind of material property parameter acquisition methods to realize the Obtaining Accurate of the performance parameter of material.

Summary of the invention

Technical matters to be solved by this invention provides a kind of material property parameter acquisition methods, in order to solve the technical matters that can't realize in the prior art the Obtaining Accurate of the performance parameter of high-end material such as strain, stress and loss angle.

The invention provides a kind of material property parameter acquisition methods, the method comprises:

The microwave signal of preset frequency is carried out frequency division process, generate the frequency division data corresponding with the frequency of described microwave signal;

Utilize described microwave signal to obtain the response data of tested material under the predetermined external force effect;

Obtain described tested material according to described frequency division data and described response data and be in stress value and loss angle value in the described microwave signal.

Said method, preferably, described method also comprises:

Obtain the default displacement controlling value corresponding with described predetermined external force;

Draw the standard strain value corresponding with described displacement controlling value according to described displacement controlling value with the relation of standard strain value;

Obtain the test strain value of described tested material under described predetermined external force effect;

Described displacement controlling value, described standard strain value and described test strain value are calculated, draw the actual strain value.

Said method preferably, describedly calculates described displacement controlling value, described standard strain value and described test strain value, draws the actual strain value and specifically comprises:

Described displacement controlling value, described standard strain value and described test strain value are designated as respectively um, by and cy;

Obtain the deviation cy-by of described test strain value cy and described standard strain value by, and obtain deviation ratio according to described deviation and described standard strain value

Foundation $\mathrm{wy}=\mathrm{um}+\frac{\mathrm{cy}-\mathrm{by}}{\mathrm{by}}\×\mathrm{um}$ Obtain the actual strain value;

Wherein,

Be the deviation ratio of the described test strain value deviate with respect to described displacement controlling value, the wy that calculates is described actual strain value.

Said method, preferably, obtain stress value and the loss angle value that described tested material is in the described microwave signal according to described frequency division data and described response data and specifically comprise:

Extract the intermediate data of described response data, obtain the intermediate data array;

Described intermediate data array is carried out even number data and the extraction of odd number data, obtain respectively the first intermediate data array and the second intermediate data array;

Described frequency division data, described the first intermediate data array and described the second intermediate data array are calculated, obtained stress value and loss angle value.

Said method preferably, calculates described frequency division data, described the first intermediate data array and described the second intermediate data array, obtains stress value and the loss angle value comprises:

Respectively described frequency division data and described the first intermediate data array are divided into a plurality of arrays, the data after described frequency division data and the grouping of described the first intermediate data array are calculated, obtain the first stress data array;

Respectively described frequency division data and described the second intermediate data array are divided into a plurality of arrays, the data after described frequency division data and the grouping of described the second intermediate data array are calculated, obtain the second stress data array and tertiary stress data array;

Every data in described the second stress data array are sorted, obtain stress value;

Obtain the intermediate stress data array according to described the first stress data array and described tertiary stress data array;

Judge that whether every data are greater than 270 degree in the described intermediate stress data array, if, obtain described data greater than the data item of 270 degree and the absolute difference of 360 degree, and with described absolute value as data item corresponding with described data item in the intermediate stress data array, otherwise, with described data item as in the described intermediate stress data array in the corresponding data item of described data item;

Every data in the described intermediate stress data array are sorted, obtain the loss angle value.

A kind of material property parameter acquisition methods provided by the invention is processed by the microwave signal of preset frequency being carried out frequency division, and utilize described microwave signal to obtain the response data of tested material under the predetermined external force effect, obtain described tested material according to described frequency division data and described response data and be in stress value and loss angle value in the described microwave signal, simultaneously, obtain the displacement controlling value corresponding with described predetermined external force, draw with the corresponding standard strain value of described displacement controlling value and obtain the test strain value of described tested material under described predetermined external force effect according to described displacement controlling value and the relation of standard strain value, to described displacement controlling value, described standard strain value and described test strain value calculate, and draw the actual strain value.Thereby according to described stress value, described loss angle value and described strain value the purposes of tested material is judged.

Certainly, implement arbitrary product of the present invention and might not need to reach simultaneously above-described all advantages.

Description of drawings

In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiment of the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the process flow diagram of a kind of material property parameter acquisition methods embodiment one provided by the invention;

Fig. 2 is the part process flow diagram of a kind of material property parameter acquisition methods embodiment two provided by the invention;

Fig. 3 is the part process flow diagram of a kind of material property parameter acquisition methods embodiment two provided by the invention;

Fig. 4 is the process flow diagram of a kind of material property parameter acquisition methods embodiment three provided by the invention;

Fig. 5 is the part process flow diagram of a kind of material property parameter acquisition methods embodiment three provided by the invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.

With reference to figure 1, it shows the process flow diagram of a kind of material property parameter acquisition methods provided by the invention, and described method can may further comprise the steps:

Step 101: the microwave signal of preset frequency is carried out frequency division process, generate the frequency division data corresponding with the frequency of described microwave signal.

Wherein, the performance parameter that embodiment of the method one provided by the invention is used for tested material is obtained, the performance parameter of tested material refers to be under the microwave signal effect of a certain characteristic frequency, tested material is applied predetermined external force but tested material displacement is constant, deformation can occur in its geometric configuration and size, and this moment, the deformation of tested material was called strain.And deformation is when occuring in tested material, and tested material internal can produce equal and opposite in direction but the acting force of opposite direction is resisted this predetermined external force, and this power on the unit area is stress.And there is phase differential between the two in response lag stress, this phase differential and loss angle.

Wherein, carry out the frequency division processing at the high-frequency microwave signal that puts in advance tested material that microwave signal generator is produced and obtain the frequency division data corresponding with the frequency of this microwave signal.

Step 102: utilize described microwave signal to obtain the response data of tested material under the predetermined external force effect.

Wherein, described step 101 can be exchanged with described step 102 order, and does not affect the execution result of the inventive method.

Wherein, described high-frequency microwave signal is acted on tested material, simultaneously tested material is applied predetermined external force, obtain the response data of tested material under described predetermined external force that is under the described microwave signal effect.

Step 103: obtain described tested material according to described frequency division data and described response data and be in stress value and loss angle value in the described microwave signal.

Wherein, described frequency division data and described response data are calculated, obtained described tested material according to described distribute data and described response data and be in stress value and loss angle value in the described microwave signal.

By such scheme as can be known, a kind of material property parameter acquisition methods embodiment one provided by the invention processes by the microwave signal of preset frequency being carried out frequency division, generate the frequency division data corresponding with the frequency of described microwave signal, utilize described microwave signal to obtain the response data of tested material under the predetermined external force effect, and obtain described tested material according to described frequency division data and described response data and be in stress value and loss angle value in the described microwave signal.Thereby according to described stress value and described loss angle value the purposes of tested material is judged.

With reference to figure 2, it shows the part process flow diagram of a kind of material property parameter acquisition methods embodiment two provided by the invention, and based on the inventive method embodiment one, described method can also may further comprise the steps:

Step 201: obtain the default displacement controlling value corresponding with described predetermined external force.

Wherein, preset the corresponding relation that tested material externally applied forces is pre-seted the displacement controlling value with it, when being in tested material in the described microwave signal and applying described predetermined external force, obtain the displacement controlling value corresponding with described predetermined external force.

Step 202: draw the standard strain value corresponding with described displacement controlling value with the relation of standard strain value according to described displacement controlling value.

Wherein, before the material property parameter that carries out described tested material obtains, set the relation between described displacement controlling value and the standard strain value.And when setting concerning between described displacement controlling value and the standard strain value, can set according to the historical data of carrying out parameter acquiring to tested material.Thus, draw the standard strain value corresponding with described displacement controlling value according to described displacement controlling value with the relation of standard strain value.For example, the displacement size of formulating wish control is the relation of displacement controlling value and standard strain value, as: 5 microns of numerical value 600 correspondences, after getting access to the displacement controlling value corresponding with described predetermined external force, draw the standard strain value according to above-mentioned both sides relation, 600* displacement controlling value/5 i.e. the standard strain value corresponding with described displacement controlling value.

Step 203: obtain the test strain value of described tested material under described predetermined external force effect.

Wherein, the execution sequence of described step 201 and described step 202 and described step 203 can be changed and not affect the present invention program's execution, for example, carries out first described step 203, is carrying out described step 201 and described step 202.

Wherein, tested material is in the strain that produces under the described predetermined external force effect carries out data acquisition, namely obtain the test strain value of described tested material under described predetermined external force effect.

Step 204: described displacement controlling value, described standard strain value and described test strain value are calculated, draw the actual strain value.

Wherein, after getting access to described displacement controlling value, described standard strain value and described test strain value, described displacement controlling value, described standard strain value and described test strain value are calculated the actual strain value, concrete computation process, as provided by the invention shown in Figure 3, comprising:

Step 301: described displacement controlling value, described standard strain value and described test strain value are designated as respectively um, by and cy.

Step 302: obtain the deviation cy-by of described test strain value cy and described standard strain value by, and obtain deviation ratio according to described deviation cy-by and described standard strain value by

Step 303: foundation $\mathrm{wy}=\mathrm{um}+\frac{\mathrm{cy}-\mathrm{by}}{\mathrm{by}}\×\mathrm{um}$ Obtain the actual strain value;

Wherein,

Be the deviation ratio of the described test strain value deviate with respect to described displacement controlling value, the wy that calculates is described actual strain value.

By such scheme as can be known, a kind of material property parameter acquisition methods embodiment two provided by the invention is by obtaining the displacement controlling value corresponding with described predetermined external force, draw with the corresponding standard strain value of described displacement controlling value and obtain the test strain value of described tested material under described predetermined external force effect according to described displacement controlling value and the relation of standard strain value, described displacement controlling value, described standard strain value and described test strain value are calculated, draw the actual strain value.Thereby according to described strain value the purposes of tested material is judged.

With reference to figure 4, it shows the process flow diagram of a kind of material property parameter acquisition methods embodiment three provided by the invention, and based on the inventive method embodiment one, described step 103 can may further comprise the steps:

Step 403: extract the intermediate data of described response data, obtain the intermediate data array.

Wherein, before described frequency division data and described response data are calculated, the accuracy of calculating for improving data, described response data is carried out data to be extracted, can be according to default extracting rule, extract the intermediate data of described response data, and form the intermediate data array by the intermediate data of described extraction, its array size is decided according to described extracting rule.

Step 404: described intermediate data array is carried out even number data and the extraction of odd number data, obtain respectively the first intermediate data array and the second intermediate data array.

Wherein, carry out again the data extraction to extracted the described intermediate data array that obtains by accurate data, be divided into two groups of data, namely described intermediate data array being carried out the even number data extracts, obtain the first intermediate data array of being formed by the even number data, remaining odd number data in the described intermediate data array are formed the second intermediate data array.

Step 405: described frequency division data, described the first intermediate data array and described the second intermediate data array are calculated, obtained stress value and loss angle value.

Need to prove that described step 401 is described consistent with step 101 described in the inventive method embodiment one and described step 102 with described step 402, does not repeat them here.

Wherein, in described step 405, concrete computation process as provided by the invention shown in Figure 5, comprising:

Step 501: respectively described frequency division data and described the first intermediate data array are divided into a plurality of arrays, the data after described frequency division data and the grouping of described the first intermediate data array are calculated, obtain the first stress data array.

Wherein, described frequency division data, described the first intermediate data array, described the second intermediate data array are designated as respectively w[n1], y1Data[n3] and y2Data[n4], wherein, n1, n3 and n4 are respectively data amount check in described frequency division data, described the first intermediate data array and described the second intermediate data array.

Wherein, in the described step 501, respectively with w[n1] and y1Data[n3] be divided into a plurality of arrays, to w[n1] and y1Data[n3] data after the grouping calculate, and obtain the first stress data array, can be designated as deg yi[n8];

Wherein, n8 is data amount check in described the first stress data array.

Wherein, concrete computation process in the described step 501 comprises:

Respectively with wt[n1] and y1Data[n3] be divided into a plurality of arrays, form a plurality of array composite sets that formed by two arrays respectively, for example with wt[n1] and y1Data[n3] be divided into 10 arrays, extract wherein one group of array combination wt1[n5] and yData1[n6];

Wherein, n5 and n6 are respectively array wt1[n5] and array yData1[n6] middle data amount check;

Foundation $x1\left[i\right]=\cos \left(\mathrm{\ωt}1\right[i\left]\right)-\frac{\underset{i=0}{\overset{n5-1}{\mathrm{\Σ}}}\cos \left(\mathrm{\ωt}1\right[i\left]\right)}{n5},$ $x2\left[i\right]=\sin \left(\mathrm{\ωt}1\right[i\left]\right)-\frac{\underset{i=0}{\overset{n5-1}{\mathrm{\Σ}}}\sin \left(\mathrm{\ωt}1\right[i\left]\right)}{n5}$ And $y\left[i\right]=\mathrm{yData}1\left[i\right]-\frac{\underset{i=0}{\overset{n6-1}{\mathrm{\Σ}}}\mathrm{yData}\left[i\right]}{n6}$ Obtain respectively the first mediant x1[n5], array x2[n5 in the middle of second] and the 3rd in the middle of array y[n6];

Wherein, i ∈ [0, n5-1], wt[i] be wt[n1] i data, yData1[i] be yData1[n6] i data;

Foundation $a=\frac{N2\×k2-N3\×k1}{N2\×N2-N1\×N3},$ $b=\frac{N2\×k1-N1\×k2}{N2\×N2-N1\×N3}$ By x1[n5], x2[n5] and y[n6] obtain the first intermediate variable a and the second intermediate variable b;

Wherein, $k1=\underset{i=0}{\overset{n5-1}{\mathrm{\Σ}}}\left(y\right[i]\×x1[i\left]\right),$ $k2=\underset{i=0}{\overset{n5-1}{\mathrm{\Σ}}}\left(y\right[i]\×x2[i\left]\right),$ $N1=\underset{i=0}{\overset{n5-1}{\mathrm{\Σ}}}\left(x1\right[i]\×x1[i\left]\right),$ $N2=\underset{i=0}{\overset{n5-1}{\mathrm{\Σ}}}\left(x1\right[i]\×x2[i\left]\right),$ $N3=\underset{i=0}{\overset{n5-1}{\mathrm{\Σ}}}\left(x2\right[i]\×x2[i\left]\right),$ X1[i], x2[i] and y[i] be respectively x1[n5], x2[n5] and y[n6] I data;

Foundation

To a square with square the summing up of b after get the square root that this adds and is worth, obtain the 3rd intermediate variable A1;

Judge the value of a and b, obtain the 5th intermediate variable degree1 as deg yi[n8 according to a and b] the first data;

Wherein, if a＞0 and b＜0, then the 4th intermediate variable ${\mathrm{angle}=}^{\arcsin \left(\frac{-b}{A1}\right)},$ If a＞0 and b＞0, ${\mathrm{angle}=}^{2\mathrm{\π}-\arcsin \left(\frac{b}{A1}\right)},$ If a＜0 and b＜0, ${\mathrm{angle}=}^{\mathrm{\π}-\arcsin \left(\frac{-b}{A1}\right)},$ If a＜0 and b＞0, ${\mathrm{angle}=}^{\mathrm{\π}+\arcsin \left(\frac{b}{A1}\right)};$

Foundation

Obtain the 5th intermediate variable degree1 as deg yi[n8] the first data;

Other arrays combination in the described array composite set is calculated according to said method, obtains deg yi[n8] in other data.

Step 502: respectively described frequency division data and described the second intermediate data array are divided into a plurality of arrays, the data after described frequency division data and the grouping of described the second intermediate data array are calculated, obtain the second stress data array and tertiary stress data array.

Wherein, respectively with wt[n1] and yData2[n4] according in the above-mentioned steps 501 to wt[n1] and yData1[n3] calculate and obtain deg yi[n8] method for computing data calculate tertiary stress data array deg li[n8].

Wherein, respectively with wt[n1] and yData2[n4] according in the above-mentioned steps 501 to wt[n1] and yData1[n3] integrated data calculate the method for computing data that obtains a plurality of A1 values and calculate the second stress data array Ali[n7].

Step 503: the every data in described the second stress data array are sorted, obtain stress value.

Wherein, to Ali[n7] in every data sort, its ordering rule can be selected ordering rule from large to small, and the 4th data after the described ordering are calculated the stress value that obtains described tested material.

Step 504: obtain the intermediate stress data array according to described the first stress data array and described tertiary stress data array.

Wherein, according to degi[j]=| degli[j]-deg yi[j] | to deg li[n8] and deg yi[n8] calculate, obtain degi[n8], wherein, j ∈ [0, n8-1], degi[j] be degi[n8] in j data, degli[j] be deg li[n8] in j data, deg yi[j] be deg yi[n8] in j data.

Step 505: whether judge in the described intermediate stress data array every data greater than 270 degree, if so, execution in step 506, otherwise execution in step 507;

Step 506: obtain the absolute difference that described data are spent greater than the data item and 360 of 270 degree, and with described absolute value as data item corresponding with described data item in the intermediate stress data array;

Step 507: with described data item as data item corresponding with described data item in the described intermediate stress data array.

Wherein, judge degi[n8] in every data whether greater than 270 degree, if, then obtain described data greater than the data item of 270 degree and the absolute difference of 360 degree, and with described absolute value as deg[n8] in data item, otherwise, with described data item as deg[n8] in the data item corresponding with described data item.

Step 508: the every data in the described intermediate stress data array are sorted, obtain the loss angle value.

Wherein, to deg[n8] in every data sort, its ordering rule can be selected ordering rule from large to small, and chooses the 4th data after the ordering as the loss angle value of tested material.

By such scheme as can be known, a kind of material property parameter acquisition methods embodiment three provided by the invention processes by the microwave signal of preset frequency being carried out frequency division, generate the frequency division data corresponding with the frequency of described microwave signal, utilize described microwave signal to obtain the response data of tested material under the predetermined external force effect, and described response data is carried out data extract, response data according to described frequency division data and extraction obtains stress value and loss angle value, has guaranteed the accuracy of stress value and loss angle value.Thereby according to described stress value and described loss angle value the purposes of tested material is judged.

Need to prove that each embodiment in this instructions all adopts the mode of going forward one by one to describe, what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.

More than a kind of material property parameter acquisition methods that the application is provided be described in detail, used specific case herein the application's principle and embodiment are set forth, the explanation of above embodiment just is used for helping to understand the application's method and core concept thereof; Simultaneously, for one of ordinary skill in the art, the thought according to the application all will change in specific embodiments and applications, and in sum, this description should not be construed as the restriction to the application.

Claims (4)

1. material property parameter acquisition methods is characterized in that the method comprises:

The microwave signal of preset frequency is carried out frequency division process, generate the frequency division data corresponding with the frequency of described microwave signal;

Utilize described microwave signal to obtain the response data of tested material under the predetermined external force effect;

Obtain described tested material according to described frequency division data and described response data and be in stress value and loss angle value in the described microwave signal;

Obtain the default displacement controlling value corresponding with described predetermined external force;

Draw the standard strain value corresponding with described displacement controlling value according to described displacement controlling value with the relation of standard strain value;

Obtain the test strain value of described tested material under described predetermined external force effect;

Described displacement controlling value, described standard strain value and described test strain value are calculated, draw the actual strain value.

2. method according to claim 1 is characterized in that, described described displacement controlling value, described standard strain value and described test strain value is calculated, and draws the actual strain value and specifically comprises:

Described displacement controlling value, described standard strain value and described test strain value are designated as respectively um, by and cy;

Obtain the deviation cy-by of described test strain value cy and described standard strain value by, and obtain deviation ratio according to described deviation cy-by and described standard strain value by

Foundation $\mathrm{wy}=\mathrm{um}+\frac{\mathrm{cy}-\mathrm{by}}{\mathrm{by}}\×\mathrm{um}$ Obtain the actual strain value;

Wherein,

Be the deviation ratio of the described test strain value deviate with respect to described displacement controlling value, the wy that calculates is described actual strain value.

3. method according to claim 1 is characterized in that, obtains stress value and the loss angle value that described tested material is in the described microwave signal according to described frequency division data and described response data and specifically comprises:

Extract the intermediate data of described response data, obtain the intermediate data array;

Described intermediate data array is carried out even number data and the extraction of odd number data, obtain respectively the first intermediate data array and the second intermediate data array;

Described frequency division data, described the first intermediate data array and described the second intermediate data array are calculated, obtained stress value and loss angle value.

4. method according to claim 3 is characterized in that, described frequency division data, described the first intermediate data array and described the second intermediate data array are calculated, and obtains stress value and the loss angle value comprises:

Respectively described frequency division data and described the first intermediate data array are divided into a plurality of arrays, the data after described frequency division data and the grouping of described the first intermediate data array are calculated, obtain the first stress data array;

Respectively described frequency division data and described the second intermediate data array are divided into a plurality of arrays, the data after described frequency division data and the grouping of described the second intermediate data array are calculated, obtain the second stress data array and tertiary stress data array;

Every data in described the second stress data array are sorted, obtain stress value;

Obtain the intermediate stress data array according to described the first stress data array and described tertiary stress data array;

Judge that whether every data are greater than 270 degree in the described intermediate stress data array, if, obtain described data greater than the data item of 270 degree and the absolute difference of 360 degree, and with described absolute value as data item corresponding with described data item in the intermediate stress data array, otherwise, with described data item as data item corresponding with described data item in the described intermediate stress data array;

Every data in the described intermediate stress data array are sorted, obtain the loss angle value.

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