CN103323358A - Thermal cycle test equipment and test method - Google Patents
Thermal cycle test equipment and test method Download PDFInfo
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- CN103323358A CN103323358A CN2013102700865A CN201310270086A CN103323358A CN 103323358 A CN103323358 A CN 103323358A CN 2013102700865 A CN2013102700865 A CN 2013102700865A CN 201310270086 A CN201310270086 A CN 201310270086A CN 103323358 A CN103323358 A CN 103323358A
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Abstract
The invention discloses thermal cycle test equipment. The thermal cycle test equipment comprises a high-temperature tank, a low-temperature tank and a circulating pipeline system, wherein the circulating pipeline system comprises a high-temperature medium pipeline connected with the high-temperature tank, a low-temperature medium pipeline connected with the low-temperature tank, and a reflux pipeline used for medium reflux, the high-temperature medium pipeline is provided with a high-temperature pump, a high-temperature connecting pipe is arranged between an outlet of the high-temperature pump and a medium inlet of a test specimen, a high-temperature heat exchange pipe is arranged between the outlet of the high-temperature pump and the high-temperature tank, the low-temperature medium pipeline is provided with a low-temperature pump, a low-temperature connecting pipe is arranged between an outlet of the low-temperature pump and the medium inlet of the test specimen, a low-temperature heat exchange pipe is arranged between the outlet of the high-temperature pump and the low-temperature tank, the reflux pipeline comprises a high-temperature reflux pipeline and a low-temperature reflux pipeline which are arranged in parallel and connected with a medium outlet of the test specimen, the high-temperature reflux pipeline is connected with the high-temperature tank, and the low-temperature reflux pipeline is connected with the low-temperature tank. The invention also discloses a thermal cycle test method. The thermal cycle test equipment and the test method can be used for realizing the rapid change of temperature.
Description
Technical field
The invention belongs to thermal shock/thermal cycling test technical field, be specifically related to a kind of thermal cycling test equipment and test method for the cyclic test of car radiator internal heat.
Background technology
As shown in Figure 1, be the structural representation of existing a kind of thermal cycling test equipment.This thermal cycling test equipment comprises high temperature groove 1, cryostat, 2, and be arranged on circulating line between high temperature groove 1, cryostat, 2 and the test specimen 3, high temperature groove 1 and the cryostat, 2 interior high and low temperature mediums that are contained with respectively, and high-temperature medium and cryogenic media all are injected in the test specimen 3 by a pump 4, be respectively equipped with the variable valve 5 for adjust flux on high-temperature medium pipe and the cryogenic media pipe, be back in high temperature groove 1 and the cryostat, 2 through the return line of two parallel connections respectively through high-temperature medium and cryogenic media behind the test specimen 3.
Although this thermal cycling test equipment can satisfy the requirement of the thermal cycling test of some test specimens 3 to a certain extent, also there is following some deficiency:
1, because high-temperature medium and cryogenic media all provide circulation power with same pump 4, and medium through in the pump can and pump 4 between heat interchange occurs, the medium temperature that causes injecting test specimen 3 rises and all relatively mitigations of decline, the temperature difference is less, can't do violent thermal strain impulse test to product, as shown in Figure 2;
2, this thermal cycling test equipment can't be finished thermal cycle, the thermal shock test that reaches lower temperature below 0 ℃;
Because including, car radiator fastens all widely different parts of hydroecium, O-ring seal, fin, flat tube and side plate equal thickness and accumulation of heat and thermal strain, at extremely frigid zones, engine is in worst hot case, if throw open hot water valve, can cause unbalanced thermal strain to impact to heating radiator, often causing heating radiator side plate, fin to impact under the operating mode in thermal strain tears, and the hydroecium generation irrecoverability that causes fastening splits, flat tube and main leaf generation irrecoverability are torn, and finally causes product leakage and scrap.
Therefore, when heatsink mass detects, need the operating condition of simulation extremely frigid zones, it is carried out thermal cycle/thermal shock test, and existing thermal cycling test equipment is slower owing to difference variation, and can't satisfies request for utilization.
Summary of the invention
In view of this, the object of the present invention is to provide the thermal cycling test method of a kind of thermal cycling test equipment and this thermal cycling test equipment of employing, this thermal cycling test equipment and test method can realize the cataclysm of temperature, and can analog radiator in the thermal shock operating mode of extremely frigid zones.
For achieving the above object, the present invention has at first proposed a kind of thermal cycling test equipment, comprise high temperature groove, cryostat, and circulating pipe system, described circulating pipe system comprises the high-temperature medium pipeline that links to each other with the high temperature groove, the cryogenic media pipeline that links to each other with cryostat, and is used for the return line of medium back flow;
Described high-temperature medium pipeline is provided with high-temperature pump, is provided with the high temperature conjunction pipe between the medium inlet of described high temperature delivery side of pump and described test specimen, and and described high temperature groove between be provided with high-temperature heat exchange tube;
Described cryogenic media pipeline is provided with cryopump, is provided with the low temperature connecting pipe between the medium inlet of described low temperature delivery side of pump and described test specimen, and and described cryostat, between be provided with the low-temperature heat exchange pipe;
Described return line comprises two high temperature reflux pipelines that are set up in parallel and all link to each other with the media outlet of test specimen and low temperature reflux pipeline, and described high temperature reflux pipeline links to each other with described high temperature groove, and described low temperature reflux pipeline links to each other with cryostat.
Further, also be provided with high-temperature three-way valve on the export pipeline of described high-temperature pump, described high temperature conjunction pipe links to each other with two outlets of described high-temperature three-way valve respectively with high-temperature heat exchange tube.
Further, also be provided with the low temperature T-valve on the export pipeline of described cryopump, described low temperature connecting pipe links to each other with two outlets of described low temperature T-valve respectively with the low-temperature heat exchange pipe.
Further, be provided with high temperature flow control bypass between described high-temperature pump and the high-temperature three-way valve, described high temperature flow control bypass is provided with high temperature flow regulation valve and links to each other with described high temperature groove.
Further, be provided with low temperature flow control bypass between described cryopump and the low temperature T-valve, described low temperature flow control bypass is provided with the cryogenic flow adjustable valve and links to each other with described cryostat.
Further, also be provided with flow back three-way valve on the described return line, the entrance of described flow back three-way valve links to each other with the media outlet of test specimen, and described high temperature reflux pipeline links to each other with two outlets of described flow back three-way valve respectively with the low temperature reflux pipeline.
Further, be provided with the liquid level equilibrium pipe between described high temperature groove and the cryostat,, and described liquid level equilibrium pipe is provided with operation valve.
The invention allows for the as mentioned above thermal cycling test method of thermal cycling test equipment of a kind of employing, comprise the steps:
1) high-temperature heat exchange tube and low-temperature heat exchange pipe are communicated with, and high temperature conjunction pipe and low temperature connecting pipe are cut off;
2) open high-temperature pump and cryopump, make the medium sufficient heat exchange in high-temperature pump and the high-temperature medium pipeline, the medium sufficient heat exchange in cryopump and the cryogenic media pipeline;
3) be communicated with low temperature connecting pipe, cut-out low-temperature heat exchange pipe, cut-out high temperature conjunction pipe and connection high-temperature heat exchange tube, make the medium heat exchange in test specimen and the low temperature connecting pipe, until the time of setting;
4) cut off low temperature connecting pipe, connection low-temperature heat exchange pipe, connection high temperature conjunction pipe and cut-out high-temperature heat exchange tube, make the medium heat exchange in test specimen and the high temperature conjunction pipe, until the time of setting;
5) reciprocation cycle step 3) and step 4) are until reach the cycle period quantity of setting;
6) close high-temperature pump and cryopump.
Further, described high-temperature pump and cryopump are all worked under the rated power operating mode.
Further, the medium in described high temperature groove and the cryostat, is ethylene glycol.
Beneficial effect of the present invention is:
Thermal cycling test equipment of the present invention, by the high-temperature medium pipeline is set, and the high temperature delivery side of pump is linked to each other with test specimen by the high temperature conjunction pipe respectively and link to each other with the high temperature groove by high-temperature heat exchange tube, before carrying out thermal cycling test, the circulation line that utilizes high temperature groove, high-temperature pump and high-temperature heat exchange tube to form, make the abundant heat exchange of medium in high-temperature pump and the high-temperature medium pipeline, and reach thermal equilibrium; In like manner, by the cryogenic media pipeline is set, and the low temperature delivery side of pump linked to each other with test specimen and link to each other with cryostat, by the low-temperature heat exchange pipe by the low temperature connecting pipe respectively, before carrying out thermal cycling test, the circulation line that utilizes cryostat,, cryopump and low-temperature heat exchange pipe to form, make the medium sufficient heat exchange in cryopump and the cryogenic media pipeline, and reach thermal equilibrium; And in whole thermal cycling test, the opening that all keeps high-temperature pump and cryopump, so, just can make high-temperature pump and cryopump as far as possible little to the temperature effect of medium, the temperature that namely passes into the medium of test specimen can realize cataclysm, namely can carry out the thermal shock test of temperature transient change, can simulate car radiator in the thermal shock operating mode that extremely frigid zones is subject to, namely satisfy the thermal cycling test requirement of car radiator.
Description of drawings
In order to make purpose of the present invention, technical scheme and beneficial effect clearer, the invention provides following accompanying drawing and describe:
Fig. 1 is the structural representation of existing a kind of thermal cycling test equipment;
Fig. 2 is for adopting the medium temperature periodogram over time that passes into test specimen behind this thermal cycling test equipment;
Fig. 3 is the structural representation of thermal cycling test apparatus embodiments of the present invention;
Fig. 4 is for adopting the medium temperature periodogram over time that passes into test specimen behind the present embodiment thermal cycling test equipment.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in Figure 3, be the structural representation of thermal cycling test apparatus embodiments of the present invention.The thermal cycling test equipment of the present embodiment, comprise high temperature groove 1, cryostat, 2 and circulating pipe system, circulating pipe system comprises the high-temperature medium pipeline 10 that links to each other with high temperature groove 1, the cryogenic media pipeline 20 that links to each other with cryostat, 2 and is used for the return line 30 of medium back flow.
High-temperature medium pipeline 10 is provided with high-temperature pump 11, be provided with high temperature conjunction pipe 12 between the medium inlet of the outlet of high-temperature pump 11 and test specimen 3, and and high temperature groove 1 between be provided with high-temperature heat exchange tube 13, by high-temperature pump 11, medium in the high temperature groove 1 can be injected in the test specimen 3, and in the thermal cycling test process, when not needing to test specimen 3 injection high-temperature medium, utilize the high-temperature heat exchange tube 13 will be through the medium back flow of high-temperature pump 11 to high temperature groove 1, be used for keeping the heat interchange balance between the interior medium of high-temperature pump 11 and high-temperature medium pipeline 10.
Further, also be provided with high-temperature three-way valve 14 on the export pipeline of high-temperature pump 11, high temperature conjunction pipe 12 links to each other with two outlets of high-temperature three-way valve 14 respectively with high-temperature heat exchange tube 13, by high-temperature three-way valve 14 is set, can select to switch the switching of high temperature conjunction pipe 12 and high-temperature heat exchange tube 13, and abandoned respectively the form that valve is set at high temperature conjunction pipe 12 and high-temperature heat exchange tube 13, high-temperature three-way valve 14 can with high-temperature medium pipeline 10 in media implementation heat interchange balance, when namely utilizing high-temperature three-way valve 14 to switch high temperature conjunction pipe 12 and high-temperature heat exchange tube 13, less to the temperature effect of high-temperature medium.
In like manner, also be provided with low temperature T-valve 24 on the export pipeline of cryopump 21, low temperature connecting pipe 22 links to each other with two outlets of low temperature T-valve 24 respectively with low-temperature heat exchange pipe 23, by low temperature T-valve 24 is set, can select to switch the switching of low temperature connecting pipe 22 and low-temperature heat exchange pipe 23, and abandoned respectively the form that valve is set at low temperature connecting pipe 22 and low-temperature heat exchange pipe 23, low temperature T-valve 24 can with cryogenic media pipeline 20 in media implementation heat interchange balance, when namely utilizing low temperature T-valve 24 to switch low temperature connecting pipe 22 and low-temperature heat exchange pipe 23, less to the temperature effect of cryogenic media.
Further, be provided with high temperature flow control bypass 15 between high-temperature pump 11 and the high-temperature three-way valve 14, high temperature flow control bypass 15 is provided with high temperature flow regulation valve 16 and links to each other with high temperature groove 1, by high temperature flow control bypass 15 is set, can make high-temperature pump 11 remain at work in the good condition range, namely when the rate-of flow that passes into test specimen 3 is larger, reduce the rate-of flow of high temperature flow control bypass 15, when the rate-of flow that passes into test specimen 3 hour, increase the rate-of flow of high temperature flow control bypass 15, and final the realization stablized by the rate-of flow of high-temperature pump 11.
In like manner, be provided with low temperature flow control bypass 25 between cryopump 21 and the low temperature T-valve 24, low temperature flow control bypass 25 is provided with cryogenic flow adjustable valve 26 and links to each other with cryostat, 2, by low temperature flow control bypass 25 is set, can make cryopump 21 remain at work in the good condition range, namely when the rate-of flow that passes into test specimen 3 is larger, reduce the rate-of flow of low temperature flow control bypass 25, when the rate-of flow that passes into test specimen 3 hour, increase the rate-of flow of low temperature flow control bypass 25, and final the realization stablized by the rate-of flow of cryopump 21.
Further, also be provided with flow back three-way valve 33 on the return line 30 of the present embodiment, the entrance of flow back three-way valve 33 links to each other with the media outlet of test specimen 3, high temperature reflux pipeline 31 links to each other with two outlets of flow back three-way valve 33 respectively with low temperature reflux pipeline 32, can select to switch the switching of high temperature reflux pipeline 31 and low temperature reflux pipeline 32 by flow back three-way valve 33, and then control medium is back to high temperature groove 1 or cryostat, 2, and makes the liquid level position in high temperature groove 1 and the cryostat, 2 constant.Preferably, be provided with liquid level equilibrium pipe 6 between high temperature groove 1 and the cryostat, 2, and liquid level equilibrium pipe 6 is provided with operation valve 7, by liquid level equilibrium pipe 6 is set, liquid level in high temperature groove 1 and the cryostat, 2 is equated, be the thermal cycling test equipment of the present embodiment after long-play, still can keep the liquid levels in high temperature grooves 1 and the cryostat, 2 to equate by liquid level equilibrium pipe 6.
The thermal cycling test equipment of the present embodiment, by high-temperature medium pipeline 10 is set, and the outlet of high-temperature pump 11 linked to each other with test specimen 3 by high temperature conjunction pipe 12 respectively and link to each other with high temperature groove 1 by high-temperature heat exchange tube 13, before carrying out thermal cycling test, the circulation line that utilizes high temperature groove 1, high-temperature pump 11 and high-temperature heat exchange tube 13 to form, make the abundant heat exchange of medium in high-temperature pump 11 and the high-temperature medium pipeline 10, and reach thermal equilibrium; In like manner, by cryogenic media pipeline 20 is set, and the outlet of cryopump 21 linked to each other with test specimen 3 and link to each other with cryostat, 2 by low-temperature heat exchange pipe 23 by low temperature connecting pipe 22 respectively, before carrying out thermal cycling test, the circulation line that utilizes cryostat, 2, cryopump 21 and low-temperature heat exchange pipe 23 to form, make the medium sufficient heat exchange in cryopump 21 and the cryogenic media pipeline 20, and reach thermal equilibrium; And in whole thermal cycling test, the opening that all keeps high-temperature pump 11 and cryopump 21, so, just can make the temperature effect of high-temperature pump 11 and 21 pairs of media of cryopump as far as possible little, the temperature that namely passes into the medium of test specimen 3 can realize cataclysm, namely can carry out the thermal shock test of temperature transient change, can simulate car radiator in the thermal shock operating mode that extremely frigid zones is subject to, namely satisfy the thermal cycling test requirement of car radiator.
Elaborate below in conjunction with the embodiment of above-mentioned thermal cycling test equipment to thermal cycling test method of the present invention.
The present embodiment adopts the as mentioned above thermal cycling test method of thermal cycling test equipment, comprises the steps:
1) high-temperature heat exchange tube 13 and low-temperature heat exchange pipe 23 are communicated with, and with high temperature conjunction pipe 12 and 22 cut-outs of low temperature connecting pipe, make between high-temperature pump 11, high-temperature heat exchange tube 13 and the high temperature groove 1 to consist of closed path, consist of closed path between cryopump 21, low-temperature heat exchange pipe 23 and the cryostat, 2;
2) open high-temperature pump 11 and cryopump 21, make the medium sufficient heat exchange in high-temperature pump 11 and the high-temperature medium pipeline 10, medium sufficient heat exchange in cryopump 21 and the cryogenic media pipeline 20, be that high-temperature pump 11 and high-temperature medium pipeline 10 interior media reach the heat interchange equilibrium state, the media in cryopump 21 and the cryogenic media pipeline 20 reach the heat interchange equilibrium state;
3) be communicated with low temperature connecting pipe 22, cut-out low-temperature heat exchange pipe 23, cut-out high temperature conjunction pipe 12 and connection high-temperature heat exchange tube 13, low temperature connecting pipe 22, test specimen 3, low temperature reflux pipeline 32 and cryostat, 2 form closed paths at this moment, consist of closed path between high-temperature pump 11, high-temperature heat exchange tube 13 and the high temperature groove 1, make the medium heat exchange in test specimen 3 and the low temperature connecting pipe 22, until the time of setting, namely test specimen 3 is under the worst cold case;
4) cut off low temperature connecting pipe 22, connection low-temperature heat exchange pipe 23, connection high temperature conjunction pipe 12 and cut-out high-temperature heat exchange tube 13, high temperature conjunction pipe 12, test specimen 3, high temperature reflux pipeline 31 and high temperature groove 1 form closed path at this moment, consist of closed path between cryopump 21, low-temperature heat exchange pipe 23 and the cryostat, 2, make the medium heat exchange in test specimen 3 and the high temperature conjunction pipe 12, until the time of setting, namely test specimen 3 is under the worst hot case;
5) reciprocation cycle step 3) and step 4), until reach the cycle period quantity of setting, at each switch step 3) and the process of step 4) in, test specimen 3 all can be subject to the thermal shock of low temperature-high temperature or high temperature-low temperature, and then realization is to the thermal cycling test of test specimen 3;
6) after thermal cycling test is finished, close high-temperature pump 11 and cryopump 21.
Further, high-temperature pump 11 and cryopump 21 are all worked under the rated power operating mode, so that stable by the rate-of flow of high-temperature pump 11 and cryopump 21, and be convenient to regulation and control.Medium in the high temperature groove 11 of the present embodiment and the cryostat, 21 is ethylene glycol, temperature in the cryostat, 21 can be down to-20 ℃, to satisfy analog radiator in the operating mode of extremely frigid zones, certainly, medium also can adopt other freezing points, boiling point at the fluent meterial of reasonable interval, its principle is suitable, is not repeated.
Thermal cycling test method of the present invention, can carry out to test specimen 3 thermal shock and the thermal cycling test of temperature shock, to improve the severity of thermal strain, shorten the test period, especially, for the thermal cycling test of heating radiator, can reach with bench test replacement complete vehicle test, shorten the test period, accelerate the development progress of new product.
In addition, in the thermal cycling test process, also can change the medium temperature in high temperature groove 1 and the cryostat, 2 by measuring the thermal loss of circulating pipe system, to realize thermal compensation.
Explanation is at last, above preferred embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can make various changes to it in the form and details, and not depart from claims limited range of the present invention.
Claims (10)
1. thermal cycling test equipment, comprise high temperature groove, cryostat, and circulating pipe system, it is characterized in that: described circulating pipe system comprises the high-temperature medium pipeline that links to each other with the high temperature groove, the cryogenic media pipeline that links to each other with cryostat, and is used for the return line of medium back flow;
Described high-temperature medium pipeline is provided with high-temperature pump, is provided with the high temperature conjunction pipe between the medium inlet of described high temperature delivery side of pump and described test specimen, and and described high temperature groove between be provided with high-temperature heat exchange tube;
Described cryogenic media pipeline is provided with cryopump, is provided with the low temperature connecting pipe between the medium inlet of described low temperature delivery side of pump and described test specimen, and and described cryostat, between be provided with the low-temperature heat exchange pipe;
Described return line comprises two high temperature reflux pipelines that are set up in parallel and all link to each other with the media outlet of test specimen and low temperature reflux pipeline, and described high temperature reflux pipeline links to each other with described high temperature groove, and described low temperature reflux pipeline links to each other with cryostat.
2. thermal cycling test equipment according to claim 1, it is characterized in that: also be provided with high-temperature three-way valve on the export pipeline of described high-temperature pump, described high temperature conjunction pipe links to each other with two outlets of described high-temperature three-way valve respectively with high-temperature heat exchange tube.
3. thermal cycling test equipment according to claim 2, it is characterized in that: also be provided with the low temperature T-valve on the export pipeline of described cryopump, described low temperature connecting pipe links to each other with two outlets of described low temperature T-valve respectively with the low-temperature heat exchange pipe.
4. thermal cycling test equipment according to claim 3, it is characterized in that: be provided with high temperature flow control bypass between described high-temperature pump and the high-temperature three-way valve, described high temperature flow control bypass is provided with high temperature flow regulation valve and links to each other with described high temperature groove.
5. thermal cycling test equipment according to claim 4, it is characterized in that: be provided with low temperature flow control bypass between described cryopump and the low temperature T-valve, described low temperature flow control bypass is provided with the cryogenic flow adjustable valve and links to each other with described cryostat.
6. each described thermal cycling test equipment according to claim 1-5, it is characterized in that: also be provided with flow back three-way valve on the described return line, the entrance of described flow back three-way valve links to each other with the media outlet of test specimen, and described high temperature reflux pipeline links to each other with two outlets of described flow back three-way valve respectively with the low temperature reflux pipeline.
7. each described thermal cycling test equipment is characterized in that: be provided with the liquid level equilibrium pipe between described high temperature groove and the cryostat,, and described liquid level equilibrium pipe is provided with operation valve according to claim 1-5.
8. an employing is characterized in that: comprise the steps: such as the thermal cycling test method of claim 1-7 thermal cycling test equipment as described in each
1) high-temperature heat exchange tube and low-temperature heat exchange pipe are communicated with, and high temperature conjunction pipe and low temperature connecting pipe are cut off;
2) open high-temperature pump and cryopump, make the medium sufficient heat exchange in high-temperature pump and the high-temperature medium pipeline, the medium sufficient heat exchange in cryopump and the cryogenic media pipeline;
3) be communicated with low temperature connecting pipe, cut-out low-temperature heat exchange pipe, cut-out high temperature conjunction pipe and connection high-temperature heat exchange tube, make the medium heat exchange in test specimen and the low temperature connecting pipe, until the time of setting;
4) cut off low temperature connecting pipe, connection low-temperature heat exchange pipe, connection high temperature conjunction pipe and cut-out high-temperature heat exchange tube, make the medium heat exchange in test specimen and the high temperature conjunction pipe, until the time of setting;
5) reciprocation cycle step 3) and step 4) are until reach the cycle period quantity of setting;
6) close high-temperature pump and cryopump.
9. thermal cycling test method according to claim 8, it is characterized in that: described high-temperature pump and cryopump are all worked under the rated power operating mode.
10. thermal cycling test method according to claim 8 is characterized in that: the medium in described high temperature groove and the cryostat, is ethylene glycol.
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| CN2013102700865A CN103323358A (en) | 2013-06-28 | 2013-06-28 | Thermal cycle test equipment and test method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104568634A (en) * | 2014-12-31 | 2015-04-29 | 浙江华电器材检测研究所 | Testing tank for temperature cycle testing machine for insulator |
| CN104989371A (en) * | 2015-06-26 | 2015-10-21 | 中国石油化工股份有限公司胜利油田分公司 | Online water content analyzing device for oil well mouth |
| CN106124331A (en) * | 2016-06-08 | 2016-11-16 | 中国民航大学 | A kind of fatigue tester carrying out temperature cycles |
| CN111829770A (en) * | 2020-08-31 | 2020-10-27 | 安徽江淮汽车集团股份有限公司 | Engine cylinder gasket testing system and method |
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| CN104568634A (en) * | 2014-12-31 | 2015-04-29 | 浙江华电器材检测研究所 | Testing tank for temperature cycle testing machine for insulator |
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| CN111829770A (en) * | 2020-08-31 | 2020-10-27 | 安徽江淮汽车集团股份有限公司 | Engine cylinder gasket testing system and method |
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Application publication date: 20130925 |