CN101561430B - System for monitoring crack of piezoelectric-array converged alertness network structure and monitoring and installing methods - Google Patents
System for monitoring crack of piezoelectric-array converged alertness network structure and monitoring and installing methods Download PDFInfo
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Abstract
The invention discloses a system for monitoring crack of piezoelectric-array converged alertness-network structure; on the basis of a bionic monitoring unit formed by the crossing of a plurality of mutually-insulated alertness lines, a piezoelectric array consisting of piezoelectric sensing elements is added; therefore, not only structural surface crack is accurately judged by the monitoring of the alertness line, but also structural internal stress field quantity is judged by piezoelectric signals of the piezoelectric elements, thereby acquiring analysis results such as potential bearing capacity and hazardous state pre-judgment before the crack appears and the depth and structural stress release state after the crack appears. The system can realize all-around and tri-dimensional damage detection of the engineering structure, which is a monitoring system with reliable use, high efficiency, low cost and correct result; simultaneously, the invention also discloses monitoring and installing methods of the piezoelectric-array converged alertness network structure crack monitoring system.
Description
Technical field
The present invention relates to a kind of crack of piezoelectric-array converged alertness network structure monitoring system and monitoring and installation method.
Background technology
Its disease development of most of large-sized concrete structure, performance degradation and structural failure all come from generation and the development in crack, and therefore, crack problem is the most important content of xoncrete structure health and safety research.In time find, grasp the distress in concrete situation, just can in time hold configuration state, adopt an effective measure (as grouting, reinforcing etc.), the reduction curing requirements, is avoided because of damage, is collapsed and bring loss to life and property extending structure serviceable life.
At present, very limited for effective monitoring method of concrete structure crack.The method that experts and scholars both domestic and external propose mainly contains: a. utilizes snakelike distributed optical time domain reflectometer monitoring of structures crack; B. the electric domain reflectometer that utilizes the outer concentric cable that installs around the spirality conductive layer to make is embedded in concrete and realizes the approximate location to transverse crack, the monitoring of size near the surface; C. utilize optical frequency domain reflectometer monitoring of structures crack; D. utilize the method in multi-thread distributed optical time domain reflectometer monitoring of structures crack; E. utilize the crack sensing network based on optical fiber, intersect to determine width, position and the direction in crack by perception crack and optical fiber sensing network; But using on the large-sized concrete structure, these research methods all need integrated a large amount of intensive piezoelectric element, connecting line and observation circuit thereof in body structure surface to be monitored, the Crack Monitoring that realizes the large-sized concrete structure remains in very large technology difficulty, should use difficult.
The applicant once proposed a kind of alert and resourceful check crack seam monitoring method that is applied to actual Bridge Crack Monitoring, the induction mechanism of simulation biosome skin to wound, be set as the latticed bridge structure surface of being pasted on enamel covered wire cloth, monitor the mode of enameled wire break-make by intermediate processor, can effectively monitor generation and the development in body structure surface crack.But the bionical monitoring method of this kind still can not accurately judge the non-apparent information such as inside configuration deformation field amount, crack internal depth and scope, is difficult to judge therefore that front potential load-bearing capacity appears in the crack, precarious position judges in advance and the states such as rear its degree of depth and structural stress release appear in the crack.
in Chinese patent " structural crack bionic monitoring system and monitoring method thereof " (publication number is CN101299032A), a kind of structural crack bionic system has been proposed, comprise and " stick on the monitoring means that the alert and resourceful line II of structural many alert and resourceful line I to be monitored and Duo Gen forms, alert and resourceful line I, the alert and resourceful neural network of II formation plane coordinate system arranged in a crossed manner, pass through bus, switch is connected with signal processing apparatus ", be with difference of the present invention: be connected with at least a piezoelectric sensor element on every alert and resourceful line of the present invention, a plurality of piezoelectric sensor elements form close arrangement in structural piezoelectric sensor array to be monitored, the benefit of this kind design is: the signal source of detection signal can be taken from piezoelectric signal that piezoelectric sensor element sends or the external signal of external signal generation input, when signal is taken from piezoelectric sensor, only the inner included all or part of wire except the piezoelectricity wire of alert and resourceful line need to be connected with piezoelectric sensor and get final product, the benefit of this connection is not need to add extra signal generating apparatus, reduced equipment investment, increased the dirigibility of equipment.
Summary of the invention
In view of this, the invention provides a kind of crack of piezoelectric-array converged alertness network structure monitoring system and monitoring method, not only can realize the monitoring to the structural cracks surface appearance, simultaneously can also judge inside configuration stress field amount by the piezoelectric signal of piezoelectric element, obtain thus that front potential load-bearing capacity appears in the crack, precarious position judges in advance and the crack occur after the analysis result of the states such as its degree of depth and structural stress release, realization is to structural cracks omnibearing stereoscopic monitoring from inside to outside.
One of purpose of the present invention is to provide a kind of crack of piezoelectric-array converged alertness network structure monitoring system, comprise that alert and resourceful line by many mutually insulateds intersects the bionical monitoring means that forms, described bionical monitoring means closely is pasted on the alert and resourceful neural network that consists of plane coordinate system on structure to be monitored, also comprise signal processing apparatus, the multichannel selected cell of described alert and resourceful line access signal processing apparatus forms the loop; At least be connected with a piezoelectric sensor element on described every alert and resourceful line, a plurality of piezoelectric sensor elements form close arrangement in the piezoelectric sensor array of body structure surface to be monitored;
Further, described alert and resourceful line is comprised of the wire of two above diameter differences and surface insulation, one end of all wires is assembled formation signal input bus, the other end assemble to form the signal output bus, and described signal input bus and signal output bus are connected to the corresponding multichannel selected cell with it of signal processing apparatus;
Further, be provided with the piezoelectricity wire of piezoelectric signal that is exclusively used in the transmission piezoelectric sensor element on described alert and resourceful line, described piezoelectricity wire and the formation signal circuit that is connected with the corresponding port of signal processing apparatus again after piezoelectric sensor element is connected;
Further, also comprise bit processing machine, the signal output part of described signal processing apparatus and the communication port of upper bit processing machine link;
Further, also comprise the bus protection device, described signal input bus and signal output bus are arranged on inner realization of bus protection device and seal.
Two of purpose of the present invention is to provide a kind of monitoring method of crack of piezoelectric-array converged alertness network structure monitoring system, comprises the following steps:
1) set up corresponding network coordinate system according to bionical monitoring means and piezoelectric-array in computing machine;
2) signal processing apparatus by computing machine detects, receives and process the piezoelectric signal that is sent by each piezoelectric sensor element and transmits the detection signal of coming in through alert and resourceful line, judges the whether conducting of all alert and resourceful lines, if there is broken string, enters step 3); If conducting is normal, each piezoelectric signal and the normal value that will receive compare, and judge whether to exist to change, if intensity of variation in normal range, returns to the original state of detection; If intensity of variation is not in normal range, surface stress field data and the computing machine measured by piezoelectric-array carry database and corresponding data analytical algorithm, obtain relevant rudimentary information by inverting, described Back ground Information comprises inside configuration stress field and structural-load-carrying capacity data at least; Record relevant rudimentary information and after detection time, enter next sense cycle;
3) if there is broken string, be network coordinate position and the broken string time of record broken string by network coordinate; Computing machine obtains the surface state information of structural cracks by the alert and resourceful line of fracture, surface state information according to structural cracks, calculate position and the shape in crack in coordinate system, and carry database and corresponding data analytical algorithm in conjunction with surface stress field data and the computing machine measured by piezoelectric-array, calculate the inside configuration stress field, in the situation that the surface state information in known structure crack and internal stress field calculate the internal state parameter of structural cracks, the internal state parameter of described structural cracks comprises at least the degree of depth in crack and extends area again.
Further, also comprise step 4) and step 5):
4) according to the diameter of the alert and resourceful line that ruptures and the corresponding relation of fracture width, obtain the width information in crack, and crack information is stored into computing machine; According to position and the quantity of the alert and resourceful line of newly-increased fracture, calculate the situation occurred in crannied state of development and newly-increased crack;
5) the internal state parameter with the fracture width, length and the structural cracks that record compares with the related data that last time recorded, if length, width and internal state parameter value are expansion trend, calculates its development trend in coordinate system.
Further, for measured correlation parameter information, also can realize automatic alarm, described computing machine is connected with warning device, in step 2) in, judge by relevant rudimentary information whether structure to be monitored exists the crack possibility, if exist send alerting signal by warning device, if there is no the crack possibility, record relevant rudimentary information and after detection time, enter next sense cycle;
In step 5) in, computer-internal stores state threshold, described state threshold comprises length threshold and width threshold value at least, fracture faces crack information and state threshold is compared, if crack information surpasses state threshold sends alerting signal by warning device.
Further, the signal source of described detection signal is taken from piezoelectric signal that piezoelectric sensor element sends or the external signal of external signal generation input, when signal is taken from piezoelectric sensor, only the inner included all or part of wire except the piezoelectricity wire of alert and resourceful line need to be connected with piezoelectric sensor and get final product, the benefit of this connection is not need to add extra signal generating apparatus, has reduced equipment investment; If select the external signal generation, all can only need the signal input bus is connected with the signal output part of external signal generation, the benefit of this connection is that the signal source that detects for fracture is comparatively stable.
Three of purpose of the present invention has been to provide a kind of installation method of crack of piezoelectric-array converged alertness network structure monitoring system, comprises the following steps:
1) will form bionical monitoring means and piezoelectric sensor element sticks on base film by pressure sensitive adhesive by alert and resourceful line, described base film adopts the film body of sticking epoxy resin;
2) by with the epoxide-resin glue of acetone diluted, make the base film surface that is pasted with bionical monitoring means and piezoelectric sensor element be close to the surface that sticks in the structure to be monitored that polishes flat;
3) treat pressure sensitive adhesive by acetone solution, the surperficial strong bond of described bionical monitoring means and piezoelectric sensor element and structure to be monitored is removed base film.
the invention has the beneficial effects as follows: crack of piezoelectric-array converged alertness network structure monitoring system of the present invention is on the basis of the bionical monitoring means that the alert and resourceful line intersection by many mutually insulateds forms, increased the piezoelectric-array that piezoelectric sensor forms, not only can monitor out by alert and resourceful line the accurate judgement in body structure surface crack, and can judge inside configuration stress field amount by the piezoelectric signal of piezoelectric element, obtain thus the crack and front potential load-bearing capacity occurs, the analysis result of the states such as its degree of depth and structural stress release after the pre-judgement of precarious position and crack occur, piezoelectric sensor in the present invention simultaneously both can be used as the sensing element of structural stress and strain, also can be used as the signal source of alert and resourceful net, thereby avoided classic method owing to signal need to being inputted the access that every sense line causes and outlet line is numerous, the defective of manufacture craft more complicated, the present invention can realize omnibearing, the three-dimensional damage check to engineering structure, be use reliable, efficient is high, cost is low, result monitoring system accurately.
Other advantages of the present invention, target, to set forth in the following description to a certain extent with feature, and based on being apparent to those skilled in the art to investigating hereinafter, perhaps can be instructed from the practice of the present invention to a certain extent.Target of the present invention and other advantages can realize and obtain by following instructions and claims.
Description of drawings
In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing, wherein:
Fig. 1 is structural representation of the present invention;
Fig. 2 is that Fig. 1 is at the enlarged diagram at A place;
Fig. 3 is the electric signal link circuit schematic diagram of piezoelectric sensor;
Fig. 4 is monitoring method schematic flow sheet of the present invention.
Embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.Should be appreciated that preferred embodiment only for the present invention is described, rather than in order to limit protection scope of the present invention.
The alert and resourceful line of 1-; The 2-signal processing apparatus; The 3-piezoelectric sensor element; 4-piezoelectricity wire; 5-signal input bus; 6-signal output bus; The upper bit processing machine of 7-; 8-bus protection device.
As shown in Figure 1, crack of piezoelectric-array converged alertness network structure monitoring system of the present invention comprises that the alert and resourceful line 1 by many mutually insulateds intersects the bionical monitoring means that forms, bionical monitoring means closely is pasted on the alert and resourceful neural network that consists of plane coordinate system on structure to be monitored, also comprise signal processing apparatus 2, the multichannel selected cell of alert and resourceful line 1 access signal processing apparatus 2 forms the loop; Be connected with a piezoelectric sensor element 3 on every alert and resourceful line 1, all piezoelectric sensor elements 3 form close arrangement in structural piezoelectric sensor array to be monitored, in the present embodiment, the layout of piezoelectric sensor element 3 designs according to the concrete condition of structure to be monitored, operated by rotary motion meets with stresses larger in structure to be monitored, the zone in deformation and crack easily occurs.
As shown in Figure 2, alert and resourceful line 1 is comprised of the wire of four diameter differences and surface insulation, wherein, wire a, b, c are in the ordinary course of things, can produce fracture because of the stretch-draw effect in crack, according to the diameter of fracture wire and the corresponding relation of fracture width, can measure the width in crack, be that wire a, b, c are before the crack occurs, it is the transfer wire as detection signal, and after the crack occurred, wire a, the b of fracture or c can disclose the surface crack information such as crack generation, development, position, length, width, shape; And piezoelectricity wire 4 is to use as special-purpose piezoelectric signal transfer wire, and its intensity and toughness all are better than wire a, b, c greatly, can guarantee in observation process, and the collection of piezoelectric signal can not be interrupted; In the present embodiment, the direct pressure electrical sensor element 3 of the signal source of detection signal, all conducting in same alert and resourceful line 1 all is connected with piezoelectric sensor element 3, one end of wire is assembled formation signal input bus 5, the other end assemble to form signal output bus 6, and signal input bus 5 and signal output bus 6 are connected to the corresponding multichannel selected cell with it of signal processing apparatus 2.
Signal input bus 5 is arranged on the 8 relative sealings of inner realization of bus protection device with signal output bus 6; bus protection device 8 can be designed to hood-like or strip; in order to protect bus not contact with external environment; and with bus and xoncrete structure isolation, guarantee that the crack rear bus occurs and can not snapped.
The communication port of the signal output part of signal processing apparatus 2 and upper bit processing machine 7 links, after the variation of the information of alert and resourceful thread breakage and piezo component generation electric signal is monitored by signal processing apparatus 2, by system bus, information is sent into the upper bit processing machine 7 of far-end, the inside configuration crack situation of utilizing corresponding software that body structure surface crack situation can be fictionalized intuitively and being finally inversed by on computer screen.
Figure 3 shows that the signal link circuit of piezoelectric sensor element of the present invention, piezoelectric sensor element is done the used time it can be produced electric signal being subject to structural stress, therefore piezoelectric sensor element both can be used as the sensing element of structural stress and strain, also can be used as the signal source of alert and resourceful net.The piezoelectric-array that a plurality of piezoelectric sensor elements consist of can be realized the sensing to the structural region stress field.
As shown in Figure 4, the monitoring method of the crack of piezoelectric-array converged alertness network structure monitoring system that the present invention proposes comprises the following steps:
1) set up corresponding network coordinate system according to bionical monitoring means and piezoelectric-array in computing machine;
2) signal processing apparatus by computing machine detects, receives and process the piezoelectric signal that is sent by each piezoelectric sensor element and transmits the detection signal of coming in through alert and resourceful line, judges the whether conducting of all alert and resourceful lines, if there is broken string, enters step 3); If conducting is normal, each piezoelectric signal and the normal value that will accept compare, and judge whether to exist to change, if intensity of variation in normal range, returns to the original state of detection; If intensity of variation is not in normal range, surface stress field data and the computing machine measured by piezoelectric-array carry database and corresponding data analytical algorithm, obtain relevant rudimentary information by inverting, described Back ground Information comprises inside configuration stress field and structural-load-carrying capacity data at least; Record relevant rudimentary information and after detection time, enter next sense cycle;
3) by network coordinate be network coordinate position and the broken string time of record broken string; Computing machine obtains the surface state information of structural cracks by the alert and resourceful line of fracture, surface state information according to structural cracks, calculate position and the shape in crack in coordinate system, and carry database and corresponding data analytical algorithm in conjunction with surface stress field data and the computing machine measured by piezoelectric-array, calculate the inside configuration stress field, in the situation that the surface state information in known structure crack and internal stress field calculate the internal state parameter of structural cracks, the internal state parameter of described structural cracks comprises at least the degree of depth in crack and extends area again;
4) according to the diameter of the alert and resourceful line that ruptures and the corresponding relation of fracture width, obtain the width information in crack, and crack information is stored into computing machine; According to position and the quantity of the alert and resourceful line of newly-increased fracture, calculate the situation occurred in crannied state of development and newly-increased crack;
5) the internal state parameter with the fracture width, length and the structural cracks that record compares with the related data that last time recorded, if length and width value enlarge, calculates its development trend in coordinate system.
Monitoring method of the present invention is for measured correlation parameter information, also can realize automatic alarm, computing machine is connected with warning device, in step 2) in, judge by relevant rudimentary information whether structure to be monitored exists the crack possibility, if exist send alerting signal by warning device, if there is no the crack may, record relevant rudimentary information and after detection time, enter next sense cycle;
In step 5) in, computer-internal stores state threshold, described state threshold comprises length threshold and width threshold value at least, fracture faces crack information and state threshold is compared, if crack information surpasses state threshold sends alerting signal by warning device.
The installation method of crack of piezoelectric-array converged alertness network structure monitoring system of the present invention comprises the following steps:
1) will form bionical monitoring means and piezoelectric sensor element sticks on base film by pressure sensitive adhesive by alert and resourceful line, in the present embodiment, base film adopts the plastics film body of sticking epoxy resin;
2) by with the epoxide-resin glue of acetone diluted, make the base film surface that is pasted with bionical monitoring means and piezoelectric sensor element be close to the surface that sticks in the structure to be monitored that polishes flat;
3) treat pressure sensitive adhesive by acetone solution, the surperficial strong bond of described bionical monitoring means and piezoelectric sensor element and structure to be monitored is removed base film.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of the technical program, it all should be encompassed in the middle of claim scope of the present invention.
Claims (9)
1. crack of piezoelectric-array converged alertness network structure monitoring system, comprise by the alert and resourceful line (1) of many mutually insulateds and intersect the bionical monitoring means that forms, described bionical monitoring means closely is pasted on the alert and resourceful neural network that consists of plane coordinate system on structure to be monitored, it is characterized in that: also comprise signal processing apparatus (2), the multichannel selected cell of described alert and resourceful line (1) access signal processing apparatus (2) forms the loop; At least be connected with a piezoelectric sensor element (3) on described every alert and resourceful line (1), a plurality of piezoelectric sensor elements (3) form close arrangement in structural piezoelectric sensor array to be monitored;
Also comprise host computer (7), the communication port of the signal output part of described signal processing apparatus (2) and host computer (7) links.
2. crack of piezoelectric-array converged alertness network structure monitoring system according to claim 1, it is characterized in that: described alert and resourceful line (1) is comprised of the wire of two above diameter differences and surface insulation, one end of all wires is assembled formation signal input bus (5), the other end assemble to form signal output bus (6), and described signal input bus (5) and signal output bus (6) are connected to the corresponding multichannel selected cell with it of signal processing apparatus (2).
3. crack of piezoelectric-array converged alertness network structure monitoring system according to claim 2, it is characterized in that: be provided with the piezoelectricity wire (4) of piezoelectric signal that is exclusively used in transmission piezoelectric sensor element (3) on described alert and resourceful line (1), described piezoelectricity wire (4) and the formation signal circuit that is connected with the corresponding port of signal processing apparatus (2) again after piezoelectric sensor element (3) is connected.
4. crack of piezoelectric-array converged alertness network structure monitoring system according to claim 3; it is characterized in that: also comprise bus protection device (8), described signal input bus (5) and signal output bus (6) are arranged on inner realization of bus protection device (8) and seal.
5. the monitoring method of a crack of piezoelectric-array converged alertness network structure monitoring system claimed in claim 1 is characterized in that: comprise the following steps:
1) set up corresponding network coordinate system according to bionical monitoring means and piezoelectric-array in host computer;
2) detect, receive and process the detection signal that the piezoelectric signal that is sent by each piezoelectric sensor element and transmitting through alert and resourceful line is come in by signal processing apparatus, judge the whether conducting of all alert and resourceful lines, if there is broken string, enter step 3); If conducting is normal, each piezoelectric signal and the normal value that will receive compare, and judge whether to exist to change, if intensity of variation in normal range, returns to the original state of detection; If intensity of variation is not in normal range, surface stress field data and the host computer measured by piezoelectric-array carry database and corresponding data analytical algorithm, obtain relevant rudimentary information by inverting, described Back ground Information comprises inside configuration stress field and structural-load-carrying capacity data at least; Record relevant rudimentary information and after detection time, enter next sense cycle;
3) if there is broken string, be network coordinate position and the broken string time of record broken string by network coordinate, host computer obtains the surface state information of structural cracks by the alert and resourceful line of fracture, surface state information according to structural cracks, calculate position and the shape in crack in coordinate system, and carry database and corresponding data analytical algorithm in conjunction with surface stress field data and the host computer measured by piezoelectric-array, calculate the inside configuration stress field, again in the situation that the surface state information in known structure crack and internal stress field calculate the internal state parameter of structural cracks, the internal state parameter of described structural cracks comprises at least the degree of depth in crack and extends area.
6. the monitoring method of crack of piezoelectric-array converged alertness network structure monitoring system as claimed in claim 5, is characterized in that: also comprise step 4) and step 5):
4) according to the diameter of the alert and resourceful line that ruptures and the corresponding relation of fracture width, obtain the width information in crack, and crack information is stored into host computer; According to position and the quantity of the alert and resourceful line of newly-increased fracture, calculate the situation occurred in crannied state of development and newly-increased crack;
5) the internal state parameter with the fracture width, length and the structural cracks that record compares with the related data that last time recorded, if length, width and internal state parameter value are expansion trend, calculates its development trend in coordinate system.
7. the monitoring method of crack of piezoelectric-array converged alertness network structure monitoring system as claimed in claim 6, it is characterized in that: for measured correlation parameter information, also can realize automatic alarm, described host computer is connected with warning device, in step 2) in, judge by relevant rudimentary information whether structure to be monitored exists the crack possibility, if exist send alerting signal by warning device, if there is no the crack may, record relevant rudimentary information and after detection time, enter next sense cycle;
In step 5) in, the host computer storage inside has state threshold, described state threshold comprises length threshold and width threshold value at least, fracture faces crack information and state threshold is compared, if crack information surpasses state threshold sends alerting signal by warning device.
8. the monitoring method of crack of piezoelectric-array converged alertness network structure monitoring system as claimed in claim 5 is characterized in that: the signal source of described detection signal is taken from piezoelectric signal that piezoelectric sensor element sends or the external signal of external signal input equipment input.
9. the installation method of a described crack of piezoelectric-array converged alertness network structure monitoring system as arbitrary in claim 1 to 4 is characterized in that: comprise the following steps:
1) will form bionical monitoring means and piezoelectric sensor element sticks on base film by pressure sensitive adhesive by alert and resourceful line, described base film adopts the film body of sticking epoxy resin;
2) by with the epoxide-resin glue of acetone diluted, make the base film surface that is pasted with bionical monitoring means and piezoelectric sensor element be close to the surface that sticks in the structure to be monitored that polishes flat;
3) treat pressure sensitive adhesive by acetone solution, the surperficial strong bond of described bionical monitoring means and piezoelectric sensor element and structure to be monitored is removed base film.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3924456A (en) * | 1973-08-17 | 1975-12-09 | Western Electric Co | Methods and apparatus for detecting the presence of cracks in a workpiece by the use of stress waves emitted therefrom |
| JP2002181691A (en) * | 2000-12-11 | 2002-06-26 | Yukio Fujimoto | Method and apparatus for diagnosing risk of cracking |
| CN1645119A (en) * | 2004-12-31 | 2005-07-27 | 福州大学 | Automatic testing method, apparatus and use for slit appear time |
| CN101299032A (en) * | 2008-06-06 | 2008-11-05 | 重庆交通大学 | Structural crack bionic monitoring system and monitoring method thereof |
-
2009
- 2009-05-25 CN CN 200910103936 patent/CN101561430B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3924456A (en) * | 1973-08-17 | 1975-12-09 | Western Electric Co | Methods and apparatus for detecting the presence of cracks in a workpiece by the use of stress waves emitted therefrom |
| JP2002181691A (en) * | 2000-12-11 | 2002-06-26 | Yukio Fujimoto | Method and apparatus for diagnosing risk of cracking |
| CN1645119A (en) * | 2004-12-31 | 2005-07-27 | 福州大学 | Automatic testing method, apparatus and use for slit appear time |
| CN101299032A (en) * | 2008-06-06 | 2008-11-05 | 重庆交通大学 | Structural crack bionic monitoring system and monitoring method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张奔牛等.层合机敏结构的变形和层间应力分析.《重庆大学学报（自然科学版）》.2002,第25卷(第2期), * |
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| CN101561430A (en) | 2009-10-21 |
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