CN104960546A - Flaw detecting car for inspecting steel rails of high-speed rail - Google Patents
Flaw detecting car for inspecting steel rails of high-speed rail Download PDFInfo
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- CN104960546A CN104960546A CN201510417487.8A CN201510417487A CN104960546A CN 104960546 A CN104960546 A CN 104960546A CN 201510417487 A CN201510417487 A CN 201510417487A CN 104960546 A CN104960546 A CN 104960546A
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- signal
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- high ferro
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
- B61K9/10—Measuring installations for surveying permanent way for detecting cracks in rails or welds thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D15/00—Other railway vehicles, e.g. scaffold cars; Adaptations of vehicles for use on railways
- B61D15/08—Railway inspection trolleys
- B61D15/12—Railway inspection trolleys power propelled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/12—Analysing solids by measuring frequency or resonance of acoustic waves
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- Chemical & Material Sciences (AREA)
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- General Health & Medical Sciences (AREA)
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- Health & Medical Sciences (AREA)
- Acoustics & Sound (AREA)
- Transportation (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a flaw detecting car for inspecting steel rails of a high-speed rail, which belongs to the technical field of steel rail flaw detecting devices. The flaw detecting car comprises wheels, a frame, a carriage, a diesel power generating set, a bogie and a flaw detecting device, wherein the flaw detecting device comprises a signal generator, a low frequency vibration exciter, a high frequency vibration exciter, a signal collecting system and N piezoelectric sensors, wherein N is a natural number which is greater than 1. According to the flaw detecting car for inspecting the steel rails of the high-speed rail, disclosed by the invention, through the adoption of an ultrasonic detecting technology, the flaw detecting efficiency of the profit steel rails is increased by using the flaw detecting car so as to provide assurance for safety operation of the high-speed rail.
Description
Technical field
The present invention relates to a kind of inspection car for patrolling and examining high ferro rail, belonging to steel rail flaw detection device technical field.
Background technology
Along with the progress of science and technology, high ferro transportation technology have also been obtained fast development.Affect the health status that principal element that high speed railway normally runs is rail.Therefore, in order to ensure the safe operation of high ferro, the railway system needs often to carry out carrying out flaw detection to rail, to detect weld defect and the fatigue failure of rail, to take measures in time, prevents trouble before it happens.
Application number is 201010611577.8; the applying date be the patent of invention on December 28th, 2010 disclose a kind of can the rail of monitoring crack and distortion; this can the rail of monitoring crack and distortion comprise: rail (10), for the track travelled as track train; Be installed at least one optical fiber (20) of rail (10) bottom, for experiencing distortion and the cracks of rail (10); And demodulated equipment (30), for monitoring distortion and the cracks of rail (10).Utilize this invention, solve the problem of deformation of rail and crackle real time automatic detection, signal long-distance transmission.
Application number is 201410009085.X, the applying date is that the application for a patent for invention on January 8th, 2014 discloses a kind of rail and to break rail monitoring system, described rail rail monitoring system of breaking comprises main frame, concentrator and scaler, described concentrator is connected with the rail of both sides by circuit with scaler, described scaler is communicated with concentrator by rail, and described concentrator is communicated with main frame by wireless.This invention also discloses a kind of rail and to break rail monitoring method.Rail provided by the invention breaks that the fiduciary level of rail monitoring system is high, construction and easy to maintenance, low without the need to cable laying, cost.
Application number is 201510016569.1, apply for that the application for a patent for invention in everyday on January 10th, 2015 provides a kind of high ferro rail defects and failures on-line monitoring method, its main thought is, along the line at high speed railway track, by certain distance, acceleration pick-up is installed, gather the vibration signal of rail, and form sensor network; Then the treater of sensor node is utilized to judge whether there is hurt, if there is hurt, then the signal of hurt will be delivered to information center or inspection car by sensor network and carry out warning and further process, it is characterized in that, the method wherein judged hurt is based on sparse Non-negative Matrix Factorization feature extraction and support vector cassification, sparse Non-negative Matrix Factorization adopts svd to carry out matrix initialisation, and iterative computation is carried out in application alternately least-squares algorithm.This inventive method can obtain high ferro rail monitoring result accurately, improves the speed of hurt judgement and the accuracy of hurt judgement.The present invention can be widely used in the hurt monitoring of rail.
Although above-mentioned monitoring method can the crackle of Real-Time Monitoring high ferro rail, sensitivity is not high.
Summary of the invention
In order to solve the problem, the present invention proposes a kind of inspection car for patrolling and examining high ferro rail, adopt ultrasonic detecting technology, by the efficiency using inspection car to improve rail examination, for high ferro safe operation provides safeguard.
The present invention adopts following technical scheme for solving its technical matters:
A kind of inspection car for patrolling and examining high ferro rail, comprise wheel, vehicle frame, compartment, diesel powerplant, bogie truck and failure detector, wherein compartment is arranged on vehicle frame, and wheel is arranged on the bottom in compartment, bogie truck is arranged on the bottom of vehicle frame, turning to when advancing for inspection car; Diesel powerplant is arranged in compartment, for providing power support to inspection car; Failure detector is arranged in compartment;
Described failure detector comprises signal generator, low frequency vibration exciter, high-frequency vibration exciter and signal acquiring system and N number of piezoelectric transducer, N be greater than 1 natural number, described signal generator sends pumping signal, and export the harmonic excitation signal of two-way different frequency respectively by low frequency vibration exciter and high-frequency vibration exciter simultaneously, the piezoelectric transducer be arranged on high ferro rail changes the vibration signal of rail into after receiving pumping signal, described signal acquiring system receives the rail vibration signal of piezoelectric transducer transmission, and analyzing and processing is carried out to signal, judge whether this place's rail has the degree of injury of crackle and crackle, judged result is stored in system simultaneously.
As a preferred technical solution of the present invention: described signal acquiring system comprises signal gathering unit, signal amplification unit, signal processing unit and signal memory cell.
As a preferred technical solution of the present invention: described signal amplification unit adopts preamplifier.
As a preferred technical solution of the present invention: described wheel is arranged on the bottom in compartment by lifting bar.
As a preferred technical solution of the present invention: described piezoelectric transducer is AD200TT.
A kind of inspection car for patrolling and examining high ferro rail of the present invention, adopts above technical scheme compared with prior art, has following technique effect:
(1) efficiency of the present invention by using inspection car to improve rail examination, for high ferro safe operation provides safeguard.
(2) the present invention adopts ultrasonic detecting technology, realizes the lossless decomposition to high ferro rail.
(3) the present invention utilizes the non-linear modulation effect of crack structtire under multi-frequency excitation to carry out defects detection, can significantly improve the sensitivity of ultrasound detection, overcomes conventional linear ultrasonic method to fine crack and the insensitive deficiency of close crack.
Detailed description of the invention
Be described in further details below in conjunction with to the invention.
A kind of inspection car for patrolling and examining high ferro rail, comprise wheel, vehicle frame, compartment, diesel powerplant, bogie truck and failure detector, wherein compartment is arranged on vehicle frame, and wheel is arranged on the bottom in compartment, bogie truck is arranged on the bottom of vehicle frame, turning to when advancing for inspection car; Diesel powerplant is arranged in compartment, for providing power support to inspection car; Failure detector is arranged in compartment;
Described failure detector comprises signal generator, low frequency vibration exciter, high-frequency vibration exciter and signal acquiring system and N number of piezoelectric transducer, N be greater than 1 natural number, described signal generator sends pumping signal, and export the harmonic excitation signal of two-way different frequency respectively by low frequency vibration exciter and high-frequency vibration exciter simultaneously, the piezoelectric transducer be arranged on high ferro rail changes the vibration signal of rail into after receiving pumping signal, described signal acquiring system receives the rail vibration signal of piezoelectric transducer transmission, and analyzing and processing is carried out to signal, judge whether this place's rail has the degree of injury of crackle and crackle, judged result is stored in system simultaneously.
As a preferred technical solution of the present invention: described signal acquiring system comprises signal gathering unit, signal amplification unit, signal processing unit and signal memory cell.
As a preferred technical solution of the present invention: described signal amplification unit adopts preamplifier.
As a preferred technical solution of the present invention: described wheel is arranged on the bottom in compartment by lifting bar.
As a preferred technical solution of the present invention: described piezoelectric transducer is AD200TT.
The present invention adopts ultrasonic detecting technology, realizes the lossless decomposition to high ferro rail.
Ultrasonic detection technology is the very important measure of one in society technical field of nondestructive testing, has been widely used in quality monitoring and the safety control of all trades and professions.The frequency limit of the sound wave that usual people's ear can be heard is between 20-20000Hz, and people call super sonic frequency more than the sound wave of 20KHz traditionally.
The speed of sound wave forward direction in media as well, is called the velocity of sound.For different types of super sonic, its propagation speed is different.Super sonic propagation speed is in media as well relevant with the modulus of elasticity of medium and the density of medium, and to certain medium, modulus of elasticity and density are constant, therefore the velocity of sound is also constant.Different media, has the different velocities of sound.When super sonic waveform is different, the mode of dielectric resilient distortion is different, and speed is also different.Therefore, the speed that super sonic is propagated in media as well is the important parameter characterizing medium acoustic performance.Hypracoustic frequency, relation between wavelength and the velocity of sound are as follows:
Wherein,
for hypracoustic wavelength,
for super sonic in media as well velocity of wave,
for hypracoustic frequency.Visible, in same medium, hypracoustic wavelength and hypracoustic frequency are inversely proportional to.
Ultrasonic flaw detection be utilize super sonic to propagate in object certain physical characteristics to find a kind of method of the discountinuity (namely usually said defect) of interior of articles.First produce super sonic by excitation ultrasound emission transducer and make it enter workpiece, and then by ultrasonic reception transducer by workpiece through detected material self or defect reflect, reflect, diffraction, scattering incident wave convert Received signal strength to, defect will produce different characteristic signals as the medium different from construction material, then analyze to the received signal again, thus obtain relative drawbacks or properties of materials information.
The kind of ultrasonic defectoscopy is a lot, and in current actual use, widely used is contact pulse reflection method.Super sonic, to continue extremely short time transmitter pulse in examined workpiece, utilizes the reflection echo detection position of reflection sources and the method for size of examined workpiece bottom surface or internal defect, is called pulse reflection method.Ultrasonic detection of defects mainly judges that workpiece material has zero defect, if during defectiveness, determines size and the position of defect, and then evaluates it and have the possibility having no value for use and repair.
The super sonic that transducer is launched, when inside workpiece is propagated, when running into different medium, will reflect.The intensity of reflected signal is relevant with the size of reflectivity R, and reflectivity R is only relevant with the material of incident medium and reflecting medium.The sound path passed through due to reflected signal is certain, and the intensity of the reflected signal that transducer obtains also is certain.When workpiece zero defect, only start and penetrate pulse wave and bottorm echo, there is no other echo between the two.When the little defect having area to be less than acoustic beam cross section in workpiece, then can there is flaw echo between beginning ripple and end ripple.Defect position within the workpiece can be determined in flaw echo position on a timeline, and the size of flaw echo amplitude depends on the size of the area of conter of defect in acoustic beam incident direction, and when defectiveness echo occurs, end wave height declines.When defect in workpiece is greater than acoustic beam cross section, whole acoustic energy reflect by defect, only have beginning ripple and flaw echo, there will not be end ripple.
The present invention utilizes the non-linear modulation effect of crack structtire under multi-frequency excitation to carry out defects detection, can significantly improve the sensitivity of ultrasound detection, overcomes conventional linear ultrasonic method to fine crack and the insensitive deficiency of close crack.
Groundwork of the present invention is: to tested component input simultaneously high frequency (
) super sonic and low frequency (
) vibration signal, if zero damage exists in tested component, then output response signal is the linear superposition of two pumping signals; Otherwise if there is structural damage, then two pumping signals produce non-linear modulation response effect, and namely high-frequency ultrasonic is modulated by low-frequency vibration signal.Response frequency domain in, this modulation show as there is comprising vibration frequency components in the both sides of supersonic frequency side-band (
), and the amplitude of side frequency and quantity directly related with crackle size, therefore can by measuring side frequency quantity in response spectra and amplitude directly judge the size that whether there is crackle and crackle in structure.
The efficiency of the present invention by using inspection car to improve rail examination, for high ferro safe operation provides safeguard.
Embodiment one:
If certain time period does not have high ferro to run, now certain lengths of rail is in idle state, and the present invention can be adopted to detect this lengths of rail.First every a segment distance, piezoelectric transducer is set on rail, then selects suitable output drive s-f according to the natural frequency scope of rail; High frequency output pumping signal selects the ultrasonic signal more than 20kHz, and low frequency output drive s-f selects the frequency in rail natural frequency environs, and makes the difference of two exciting signal frequency or equal the multiple of bridge pier natural frequency with value; Signal generator is utilized to produce two groups of low frequencies and high-frequency excitation signal determined according to preceding method, be input in low frequency vibration exciter and high-frequency driver respectively, after rail is applied in low frequency and high frequency pumping, piezoelectric transducer collects the vibration signal in rail, and is sent to signal acquiring system; After signal acquiring system receives signal, after preamplifier amplifies, carry out analyzing and processing, according to side frequency quantity and the amplitude of the response spectra medium high frequency supersonic frequency both sides obtained, directly judge whether rail exists the degree of tiny crack and micro-cracks damage.
Above embodiments of the present invention are explained in detail, but the present invention is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also makes a variety of changes under the prerequisite not departing from present inventive concept.
Claims (5)
1. one kind for patrolling and examining the inspection car of high ferro rail, comprise wheel, vehicle frame, compartment, diesel powerplant, bogie truck and failure detector, wherein compartment is arranged on vehicle frame, and wheel is arranged on the bottom in compartment, bogie truck is arranged on the bottom of vehicle frame, turning to when advancing for inspection car; Diesel powerplant is arranged in compartment, for providing power support to inspection car; Failure detector is arranged in compartment;
It is characterized in that described failure detector comprises signal generator, low frequency vibration exciter, high-frequency vibration exciter and signal acquiring system and N number of piezoelectric transducer, N be greater than 1 natural number, described signal generator sends pumping signal, and export the harmonic excitation signal of two-way different frequency respectively by low frequency vibration exciter and high-frequency vibration exciter simultaneously, the piezoelectric transducer be arranged on high ferro rail changes the vibration signal of rail into after receiving pumping signal, described signal acquiring system receives the rail vibration signal of piezoelectric transducer transmission, and analyzing and processing is carried out to signal, judge whether this place's rail has the degree of injury of crackle and crackle, judged result is stored in system simultaneously.
2. a kind of inspection car for patrolling and examining high ferro rail according to claim 1, is characterized in that described signal acquiring system comprises signal gathering unit, signal amplification unit, signal processing unit and signal memory cell.
3. a kind of inspection car for patrolling and examining high ferro rail according to claim 2, is characterized in that described signal amplification unit adopts preamplifier.
4. a kind of inspection car for patrolling and examining high ferro rail according to claim 1, is characterized in that described wheel is arranged on the bottom in compartment by lifting bar.
5. a kind of inspection car for patrolling and examining high ferro rail according to claim 1, is characterized in that described piezoelectric transducer is AD200TT.
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| CN201510417487.8A CN104960546A (en) | 2015-07-16 | 2015-07-16 | Flaw detecting car for inspecting steel rails of high-speed rail |
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| CN201510417487.8A CN104960546A (en) | 2015-07-16 | 2015-07-16 | Flaw detecting car for inspecting steel rails of high-speed rail |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770467A (en) * | 2016-12-09 | 2017-05-31 | 东南大学 | A kind of apparatus and method for monitoring rail structure rubber mat plate degree of aging |
| CN107813848A (en) * | 2016-09-14 | 2018-03-20 | 波音公司 | The nondestructive evaluation of railroad track, wheel and axletree |
| CN108872361A (en) * | 2018-05-04 | 2018-11-23 | 南京航空航天大学 | A kind of device of stable acquisition magnetic leakage signal |
| CN108956786A (en) * | 2018-06-13 | 2018-12-07 | 西安理工大学 | A kind of contactless rail detector car of automation |
| CN108944997A (en) * | 2018-10-19 | 2018-12-07 | 四川理工学院 | A kind of intelligent track flaw detection combination vehicle and control method |
| CN109249955A (en) * | 2018-10-08 | 2019-01-22 | 上海工程技术大学 | A kind of method and device of dynamic detection non-fragment orbit defect |
| CN109469112A (en) * | 2018-11-09 | 2019-03-15 | 北京市道路工程质量监督站 | Pile defect severity automatic identifying method based on support vector machines |
| CN110672026A (en) * | 2019-08-30 | 2020-01-10 | 泉州佰桀智能制鞋设备研究院有限公司 | Roller coaster track detection method, intelligent detection robot and detection system |
| CN111936850A (en) * | 2018-03-27 | 2020-11-13 | 国立研究开发法人量子科学技术研究开发机构 | Surveying device, surveying system, mobile body, and surveying method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01151445A (en) * | 1987-12-08 | 1989-06-14 | Toshiba Corp | Ultrasonic diagnostic apparatus |
| CN201882114U (en) * | 2010-12-01 | 2011-06-29 | 南车洛阳机车有限公司 | Rail flaw detector car for urban light rail transit |
| CN102565198A (en) * | 2011-12-27 | 2012-07-11 | 华南理工大学 | Wireless ultrasonic probe assembly for flaw detection of crawler-type steel rail and flaw detection method of wireless ultrasonic probe assembly |
| CN102608210A (en) * | 2012-03-16 | 2012-07-25 | 江苏省特种设备安全监督检验研究院镇江分院 | Method for detecting flaw of angle steel member by using ultrasonic guided waves |
| CN102826096A (en) * | 2012-09-14 | 2012-12-19 | 宝鸡南车时代工程机械有限公司 | Multifunctional inspection detecting vehicle used for railway steel rail |
| CN102928511A (en) * | 2012-10-24 | 2013-02-13 | 西安交通大学 | RAPID (reconstruction algorithm for probabilistic inspection of damage) chromatography-based nondestructive identification method of mechanical structure damages |
| CN104407049A (en) * | 2014-10-29 | 2015-03-11 | 湖南工程学院 | Micro-crack nondestructive detection system and detection method thereof |
-
2015
- 2015-07-16 CN CN201510417487.8A patent/CN104960546A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01151445A (en) * | 1987-12-08 | 1989-06-14 | Toshiba Corp | Ultrasonic diagnostic apparatus |
| CN201882114U (en) * | 2010-12-01 | 2011-06-29 | 南车洛阳机车有限公司 | Rail flaw detector car for urban light rail transit |
| CN102565198A (en) * | 2011-12-27 | 2012-07-11 | 华南理工大学 | Wireless ultrasonic probe assembly for flaw detection of crawler-type steel rail and flaw detection method of wireless ultrasonic probe assembly |
| CN102608210A (en) * | 2012-03-16 | 2012-07-25 | 江苏省特种设备安全监督检验研究院镇江分院 | Method for detecting flaw of angle steel member by using ultrasonic guided waves |
| CN102826096A (en) * | 2012-09-14 | 2012-12-19 | 宝鸡南车时代工程机械有限公司 | Multifunctional inspection detecting vehicle used for railway steel rail |
| CN102928511A (en) * | 2012-10-24 | 2013-02-13 | 西安交通大学 | RAPID (reconstruction algorithm for probabilistic inspection of damage) chromatography-based nondestructive identification method of mechanical structure damages |
| CN104407049A (en) * | 2014-10-29 | 2015-03-11 | 湖南工程学院 | Micro-crack nondestructive detection system and detection method thereof |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107813848A (en) * | 2016-09-14 | 2018-03-20 | 波音公司 | The nondestructive evaluation of railroad track, wheel and axletree |
| CN106770467A (en) * | 2016-12-09 | 2017-05-31 | 东南大学 | A kind of apparatus and method for monitoring rail structure rubber mat plate degree of aging |
| CN111936850A (en) * | 2018-03-27 | 2020-11-13 | 国立研究开发法人量子科学技术研究开发机构 | Surveying device, surveying system, mobile body, and surveying method |
| US11913910B2 (en) | 2018-03-27 | 2024-02-27 | National Institutes For Quantum And Radiological Science And Technology | Measuring device, measuring system, moving body, and measuring method |
| CN111936850B (en) * | 2018-03-27 | 2023-11-07 | 国立研究开发法人量子科学技术研究开发机构 | Measuring device, measuring system, moving object, and measuring method |
| US11674933B2 (en) | 2018-03-27 | 2023-06-13 | National Institutes For Quantum And Radiological Science And Technology | Measuring device, measuring system, moving body, and measuring method |
| CN108872361A (en) * | 2018-05-04 | 2018-11-23 | 南京航空航天大学 | A kind of device of stable acquisition magnetic leakage signal |
| CN108956786A (en) * | 2018-06-13 | 2018-12-07 | 西安理工大学 | A kind of contactless rail detector car of automation |
| CN109249955B (en) * | 2018-10-08 | 2023-11-03 | 上海工程技术大学 | Method and device for dynamically detecting ballastless track defects |
| CN109249955A (en) * | 2018-10-08 | 2019-01-22 | 上海工程技术大学 | A kind of method and device of dynamic detection non-fragment orbit defect |
| CN108944997A (en) * | 2018-10-19 | 2018-12-07 | 四川理工学院 | A kind of intelligent track flaw detection combination vehicle and control method |
| CN109469112A (en) * | 2018-11-09 | 2019-03-15 | 北京市道路工程质量监督站 | Pile defect severity automatic identifying method based on support vector machines |
| CN110672026A (en) * | 2019-08-30 | 2020-01-10 | 泉州佰桀智能制鞋设备研究院有限公司 | Roller coaster track detection method, intelligent detection robot and detection system |
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Application publication date: 20151007 |