CN101982766A - Signal transmitting/receiving method and device of high temperature elastic modulus tester - Google Patents
Signal transmitting/receiving method and device of high temperature elastic modulus tester Download PDFInfo
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- CN101982766A CN101982766A CN 201010299796 CN201010299796A CN101982766A CN 101982766 A CN101982766 A CN 101982766A CN 201010299796 CN201010299796 CN 201010299796 CN 201010299796 A CN201010299796 A CN 201010299796A CN 101982766 A CN101982766 A CN 101982766A
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- elastic modulus
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- sonic sensor
- temperature elastic
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Abstract
The invention discloses a signal transmitting/receiving method and device of a high temperature elastic modulus tester, wherein the method and device adopt the impulse exciting method. The method comprises the following steps: a non-solid contact mode for transmitting acoustic signals is adopted with the gas in the hearth as the medium; when a high-temperature sample in the hearth generates an acoustic signal, the signal is transmitted remotely to a sonic sensor in a cooling environment by utilizing the air in the dense ceramic tube of a transmission device as the medium; and the sonic sensor inputs the received signal in a computer to analyze and process and obtain the high temperature elastic modulus of the material. The device of the invention mainly comprises a transmission medium (2), the ceramic tube (3), the sonic sensor (6) and a cooling system (4). The method of the invention adopts the non-solid contact signal transmitting/receiving mode and overcomes the defect caused by the coupling of the sample and the solid material, the signal can be received accurately, and the method is convenient to operate. The invention provides an effective method for testing the high temperature elastic modulus of the material.
Description
Technical field
The present invention relates to a kind of instrument of testing the solid material high-temperature elastic modulus, particularly a kind of signal transmission method of reseptance and device of pulse excitation method high-temperature elastic modulus tester.
Background technology
High-temperature elastic modulus is solid material (fire resistive material, pottery, cement products etc.), the particularly a kind of important high-temperature physical property of fire resistive material; It can evaluating material key properties such as high temperature sintering, elevated temperature strength, elevated temperature heat stress and high-temperature phase-changeization; Research and application to material have very important significance.
Therefore, research and development high-temperature elastic modulus tester is a very important problem in solid material, particularly the fire resistive material field tests.
Pulse excitation method elasticity modulus tester under the normal temperature, with its test accurately, equipment is simple, method is quick and praised highly by the world.The normal temperature pulse excitation method elasticity modulus tester, because being used for the sensor of signals collecting can only work at the environment of room temperature, and can not be used for hot conditions, therefore research and develop the key of pulse excitation method high-temperature elastic modulus tester, just be to realize signal in the high temperature test district transmission, receive and make the working environment that is suitable for sonic sensor.
At present in the world, pulse excitation method high-temperature elastic modulus tester has different acoustic signals transmission and method of reseptance.As, with the corundum rod as signal transmission medium: be about to be coupled with specimen surface through an end of special corundum rod, its other end and sonic sensor coupling, the signal that makes required transmission is passed to the sonic sensor of low-temperature space through the corundum rod after the sample of high-temperature region sends.The deficiency of this method: not only complicated operation, specimen preparation is required harsh, also because of being that solid " coupling " joins, the test result accuracy is low; And equipment is huger, and only the length of corundum rod is just more than 500mm.
Adopt the suspension method in addition in addition: the high-temperature region signal is passed to low-temperature space with suspension; An end that is about to two suspensions is bundled in the ad-hoc location that is positioned at sample two ends, high-temperature region (burner hearth) respectively, and the other end of suspension is drawn high-temperature region (burner hearth) and is connected with sonic sensor.The deficiency of this method: this method is to join with cluster, also is solid contact transmission, and little and suspension and sample are the binding mode because of the cross section of suspension, cause signal attenuation very big; And other the resonance signal of can mixing, the disturbed test result; Suspension is necessary high temperature resistant in addition, generally adopts platinum-rhodium wire, nickel filament etc., and big, the fracture easily of this fragility is very harsh to the operation requirement in signal acquisition process after reaching a high temperature, must be meticulous.
Said method all is a solid contact method.
Summary of the invention
The objective of the invention is to overcome the prior art technical barrier that acoustic signals transmits and receives under hot environment, a kind of signal transmission method of reseptance and device of pulse excitation method high-temperature elastic modulus tester is provided.
Purpose of the present invention can take following technical scheme to realize: described a kind of pulse excitation method high-temperature elastic modulus tester signal transmission method of reseptance, and it adopts with the non-solid way of contact of the gas in the burner hearth as the media transmission acoustic signals; Behind high temperature sample generation acoustic signals in the burner hearth, signal is by the sonic sensor of the gas long-distance transmissions in the ceramic of compact pipe of transmitting device to cooler environment, sonic sensor is handled the signal input Computer Analysis that receives, and obtains the high-temperature elastic modulus of material.
The signal transmission receiving trap of described pulse excitation method high-temperature elastic modulus tester mainly is made up of transmission medium, ceramic pipe, sonic sensor and cooling device; The ceramic pipe lower end is positioned at the sample top of burner hearth, and the upper end is positioned on the furnace shell; Sonic sensor extend in the pipe on ceramic pipe top; Cooling device be arranged on ceramic pipe top around.
The densification of described ceramic pipe quality, inner wall smooth, its lower end is positioned at around the sample node and perpendicular to specimen surface.
Described transmission medium is the gas in the burner hearth.
Advantage of the present invention: 1. with the gas in the burner hearth (air, nitrogen etc.) as transmission medium, make delivering path avoid the many loaded down with trivial details factor of introducing as signal transmission medium by solid material (corundum rod, suspension), the specimen preparation precision prescribed is relatively low, and is simple to operate; 2. acoustic signals transmits in the ceramic pipe of quality densification, inner wall smooth, and it is very little that it is decayed after long-distance transmissions; 3. cooling device is efficiently small and exquisite, guarantees that working environment is not higher than 50 ℃, and having solved sonic sensor can not be in the difficult problem of hot environment work.
Description of drawings
Accompanying drawing is the structural profile synoptic diagram of embodiment of the invention front elevation.
Among the figure, 1, sample, 2, transmission medium, 3, ceramic pipe, 4, cooling device, 5, the sensor support seat, 6, sonic sensor, 7, the high temperature furnace burner hearth.
Embodiment
In conjunction with the accompanying drawings, specific embodiments of the invention are described.
The present invention adopts with the non-solid way of contact of the air in the burner hearth as the media transmission acoustic signals; Behind high temperature sample generation acoustic signals in the burner hearth, signal is by the sonic sensor of the gas long-distance transmissions in the ceramic of compact pipe of transmitting device to cooler environment, sonic sensor is handled the signal input Computer Analysis that receives, and obtains the high-temperature elastic modulus of material.
As shown in Figure 1: the signal transmission receiving trap of described pulse excitation method high-temperature elastic modulus tester, mainly form by transmission medium 2, ceramic pipe 3, sonic sensor 6 and cooling device 4; Ceramic pipe 3 lower ends are positioned at sample 1 top of high temperature furnace thorax 7, and the upper end is positioned on the furnace shell; Sonic sensor 6 extend in the pipe on ceramic pipe 3 tops; Cooling device 4 be arranged on ceramic pipe 3 that sonic sensor 6 is housed around, it can adopt inner is the circulating line of medium with water.Sonic sensor 6 is fixed on the sensor support seat 5, and sensor support seat 5 is arranged on the top of body of heater.Ceramic pipe 3 is the alundum tube that holds transmission medium gas, its quality densification, inner wall smooth, and the lower end is positioned at around the node of specimen surface and perpendicular to specimen surface.The sample node is the position of 0.224L apart from its two ends on specimen length L direction.
Described transmission medium 2 is the gas in the burner hearth, and present embodiment is an air.
Test method:
1. sample 1 is installed in accordance with regulations, and is regulated sonic sensor 6 along furnace roof crossbeam move left and right, make its position be adapted to the length of different test samples by sensor support seat 5.
2. start cooling device 4, guarantee that sensor 6 operating ambient temperatures are below 50 ℃;
3. set first temperature spot (for example 500 ℃) of test, press temperature increasing schedule heating furnace 7 to first test temperature points (500 ℃), and be incubated 30 minutes;
4. starting impulse excitation system, sample 1 sends acoustic signals;
5. the transmission medium 2 (air) of signal in ceramic pipe 3 transfers to sonic sensor 6, and sonic sensor 6 is imported computing machine with signal, and the computing machine follow procedure is calculated the elastic modulus of first temperature (500 ℃);
6. continue to press temperature increasing schedule heating furnace 7 to second test temperature points (1000 ℃), and be incubated 30 minutes; Repeat aforesaid operations, record the elastic modulus of second temperature spot (1000 ℃);
7. continue by temperature increasing schedule heating furnace 7 to the 3rd be test temperature point (1500 ℃), and be incubated 30 minutes; Repeat aforesaid operations, record the elastic modulus of the 3rd temperature spot (1500 ℃).
According to program like this, both can record the elastic modulus of certain single temperature spot, can record the high-temperature elastic modulus curve of continuous temperature again.
Claims (5)
1. a pulse excitation method high-temperature elastic modulus tester signal transmission method of reseptance is characterized in that: adopt with the non-solid way of contact of the gas in the burner hearth as the media transmission acoustic signals; Behind high temperature sample generation acoustic signals in the burner hearth, signal is by the sonic sensor of the gas long-distance transmissions in the ceramic of compact pipe of transmitting device to cooler environment, sonic sensor is handled the signal input Computer Analysis that receives, and obtains the high-temperature elastic modulus of material.
2. the signal of pulse excitation method high-temperature elastic modulus tester transmission receiving trap is characterized in that: mainly be made up of transmission medium (2), ceramic pipe (3), sonic sensor (6) and cooling device (4); Ceramic pipe (3) lower end is positioned at sample (1) top of high temperature furnace thorax (7), and the upper end is positioned on the furnace shell; Sonic sensor (6) extend into the top in ceramic pipe (3) pipe; Cooling device (4) be arranged on ceramic pipe (3) top around.
3. the signal transmission receiving trap of pulse excitation method high-temperature elastic modulus tester according to claim 2, it is characterized in that: described transmission medium (2) is the gas in the burner hearth.
4. the signal transmission receiving trap of pulse excitation method high-temperature elastic modulus tester according to claim 2 is characterized in that: described ceramic pipe (3) quality densification, and inner wall smooth, its lower end is positioned at around the sample node and perpendicular to specimen surface.
5. the signal transmission receiving trap of pulse excitation method high-temperature elastic modulus tester according to claim 2, it is characterized in that: described sonic sensor (6) is fixed on the sensor support seat (5), and sensor support seat (5) is arranged on the top of body of heater.
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| CN 201010299796 CN101982766A (en) | 2010-09-28 | 2010-09-28 | Signal transmitting/receiving method and device of high temperature elastic modulus tester |
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| CN 201010299796 CN101982766A (en) | 2010-09-28 | 2010-09-28 | Signal transmitting/receiving method and device of high temperature elastic modulus tester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053248A (en) * | 2016-08-24 | 2016-10-26 | 中钢集团洛阳耐火材料研究院有限公司 | Multi-sample high temperature elastic modulus tester |
| CN108120768A (en) * | 2017-12-28 | 2018-06-05 | 武汉钢铁有限公司 | A kind of ultrasonic test method and device of high-temperature elastic modulus |
| CN113324855A (en) * | 2021-06-25 | 2021-08-31 | 中钢集团洛阳耐火材料研究院有限公司 | Quantitative nondestructive testing method for performance of heat insulation tile block for combustion chamber of gas turbine |
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| US20070157698A1 (en) * | 2003-08-14 | 2007-07-12 | Claude Allaire | System and method for the elastic properties measurement of materials |
| US20090000378A1 (en) * | 2007-06-27 | 2009-01-01 | Dill Robert J | Methods and apparatus for measuring elastic modulus of non-solid ceramic materials by resonance |
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| CN201340367Y (en) * | 2009-01-13 | 2009-11-04 | 中国建筑材料科学研究总院 | Material elastic property tester |
| CN201803989U (en) * | 2010-09-28 | 2011-04-20 | 中钢集团洛阳耐火材料研究院有限公司 | Signal transmitting and receiving device of high temperature elastic modulus tester |
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2010
- 2010-09-28 CN CN 201010299796 patent/CN101982766A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1038882A (en) * | 1988-06-18 | 1990-01-17 | 核工业部第一研究设计院第四研究所 | The device of measuring mechanical performance of solid materials |
| US20070157698A1 (en) * | 2003-08-14 | 2007-07-12 | Claude Allaire | System and method for the elastic properties measurement of materials |
| US20090000378A1 (en) * | 2007-06-27 | 2009-01-01 | Dill Robert J | Methods and apparatus for measuring elastic modulus of non-solid ceramic materials by resonance |
| CN101441108A (en) * | 2007-11-23 | 2009-05-27 | 上海工程技术大学 | Ultrasonic wave non-contact object vibration-measuring system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053248A (en) * | 2016-08-24 | 2016-10-26 | 中钢集团洛阳耐火材料研究院有限公司 | Multi-sample high temperature elastic modulus tester |
| CN108120768A (en) * | 2017-12-28 | 2018-06-05 | 武汉钢铁有限公司 | A kind of ultrasonic test method and device of high-temperature elastic modulus |
| CN108120768B (en) * | 2017-12-28 | 2020-10-30 | 武汉钢铁有限公司 | Ultrasonic testing method and device for high-temperature elastic modulus |
| CN113324855A (en) * | 2021-06-25 | 2021-08-31 | 中钢集团洛阳耐火材料研究院有限公司 | Quantitative nondestructive testing method for performance of heat insulation tile block for combustion chamber of gas turbine |
| CN113324855B (en) * | 2021-06-25 | 2022-07-22 | 中钢集团洛阳耐火材料研究院有限公司 | Quantitative nondestructive testing method for performance of heat insulation tile block for combustion chamber of gas turbine |
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Open date: 20110302 |