CN105486577B - The multigroup sample compression creep test device of synchronism detection under a kind of control temperature and humidity condition - Google Patents
The multigroup sample compression creep test device of synchronism detection under a kind of control temperature and humidity condition Download PDFInfo
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- CN105486577B CN105486577B CN201610086490.0A CN201610086490A CN105486577B CN 105486577 B CN105486577 B CN 105486577B CN 201610086490 A CN201610086490 A CN 201610086490A CN 105486577 B CN105486577 B CN 105486577B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
Abstract
The present invention provides test multigroup sample compression creep test device simultaneously under a kind of control temperature and humidity condition, it includes temperature control system, humidity control system, sample room and computer system, computer system controls the humiture of sample room by temperature control system and humidity control system, temperature and relative humidity is equipped in sample room and compression creep test device, temperature and relative humidity are connected with computer system；Compression creep test device includes guide rod, mechanics sensor, foil gauge, bolt, top plate, middle plate, threaded rod, bottom plate and compressed spring；Mechanics sensor is fixed in the middle part of top plate, and sample to be tested is placed between mechanics sensor and middle plate, and mechanics sensor is in direct contact with sample, and foil gauge is posted in the middle part of sample, and foil gauge and mechanics sensor are connect with computer system.The present invention can be in the range of wide temperature range, full humidity, and accurate temperature controlling degree, humidity and the creep for testing multigroup sample simultaneously greatly save experimental period.
Description
Technical field
The invention discloses a kind of material properties test device, such as metal, plastics, rock and ceramic material performance survey
Trial assembly is put, and the multigroup sample compression creep test device of synchronism detection under specifically a kind of control temperature and humidity condition belongs to material property
Detection technique field.
Background technology
The phenomenon that creep refers to solid material under conditions of keeping stress constant, and strain extends and increases at any time；It is compacted
Become different from plastic deformation, plastic deformation usually just occurs after stress is more than elastic limit, as long as and the work of creep stress
Considerably long with the time, it can also occur when stress is less than the power of elastic limit application.Many materials (such as metal, plastics, rock
With ceramics etc.) property of creep is all shown under certain condition, therefore numerous engineering problems can all be related to creep, in order to make
Material plays its function under long-duration load effect, it is necessary to study their croop property.
The croop property of material and the humiture environment residing for it have close relationship, such as macromolecule engineering plastics exist
Glass transition temperature creep nearby can increase；Creep behaviour of the higher nylon material of water imbibition under different humidity is also not to the utmost
It is identical.
At present, experimental provision comes with some shortcomings used by domestic major research institute and colleges and universities, such as Chinese invention patent
(application number：ZL2011104124601 a kind of creep test device and its test method) are disclosed, is protected by controlling counterweight
Constant pressure is held, with the progress of displacement measurement is ensured with table vernier caliper, so as to characterize the croop property of material, but this device is deposited
In following defect：(1) without precise control of temperature and the device of humidity, creep properties of the material under specific humiture can not be characterized
Energy；(2) device cannot test the croop property of multigroup sample simultaneously, therefore when sample test quantity is more takes long.
Invention content
In order to overcome the deficiencies in the prior art, mainly for metal, rock, ceramics, macromolecule engineering plastics with
And nylon material, the present invention provides the multigroup sample compression creep test devices of synchronism detection under a kind of control temperature and humidity condition, account for
It is small with space, can be in the range of wide temperature range (- 80 to 300 DEG C), full humidity, accurate temperature controlling degree, humidity are simultaneously tested more simultaneously
The creep of group sample, greatlys save experimental period, and multi-group data is averaged can reduce experimental error.
The technical solution adopted by the present invention to solve the technical problems is：
Under a kind of control temperature and humidity condition simultaneously test multigroup sample compression creep test device, including temperature control system,
Humidity control system, sample room and computer system, computer system connect temperature control system and humidity control system respectively,
Temperature control system and humidity control system connect to control the indoor temperature and humidity of sample with sample room, are equipped in sample room
Temperature sensor, humidity sensor and multigroup compression creep test device, temperature sensor and humidity sensor and computer
System is connected；The compression creep test device includes guide rod, mechanics sensor, foil gauge, bolt, movable panel, activity
Middle plate, threaded rod, bottom plate and compressed spring；Activity is arranged in parallel in top, middle part and the bottom of compression creep test device respectively
Plate and bottom plate in top plate, activity, four apex angles of bottom plate, which are equipped with, puts threaded rod, and the top of threaded rod is furnished with mobilizable spiral shell
Bolt, bolt are located on movable panel；Portion is equipped with guide rod in the soleplate, and guide rod and threaded rod both pass through movable panel and work
Through-hole in dynamic on plate, compressed spring are arranged on the guide bar and between plate in bottom plate and activity；Mechanics sensor is fixed
Be arranged on the middle part of movable panel, sample to be tested is placed in mechanics sensor and activity between plate, mechanics sensor with it is to be measured
Sample is in direct contact, can real-time testing go out the stress being applied on sample to be tested；Foil gauge is posted in the middle part of sample to be tested, in real time
Record the deformation data of sample to be tested；Foil gauge and mechanics sensor are connect with computer system, are recorded with computer system
Dependent variable and the relationship of time under lower specified pressure.
Further, four apex angles of the bottom plate are equipped with threaded hole, and threaded rod is fixedly installed in threaded hole respectively.
Further, the guide rod is equipped with 2, and guide rod is symmetrical arranged on bottom plate.
Further, the fit precision of the through-hole and guide rod is higher than H6/f5.
Further, the temperature control system includes low-temperature receiver controller, heat source controller, heat-conducting medium controller, temperature
Controller is spent, temperature control method is adjusted for microcomputer temperature control and PID, ranging from -80~300 DEG C of temperature control, and precision is ± 0.1 DEG C, temperature
Fluctuation degree is ± 0.05 DEG C.
Further, the humidity control system includes dry gas controller, feeding control instrument and humidity controller, humidity control
System ranging from 0~100%, precision are ± 2%.
Further, the precision of the foil gauge and mechanics sensor is ± 1%.
Further, 32 groups of compression creep test devices are equipped in the sample room, are divided into 4 layers, 8 groups every layer.
Further, the shape of the sample to be tested is cylinder.The sample to be tested is high 20mm, basal diameter is
The cylinder of 10mm.
Test period of the invention is short, and test efficiency is high, and test data is accurate, precision is high, and specific advantage is as follows：
(1) present invention can in the range of wide temperature range (- 80~300 DEG C), full humidity (relative humidity 0-100%),
Under computer system terminal control, environment where temperature control system and humidity control system accurately control sample to be tested is utilized
Temperature (accuracy is ± 0.1 DEG C) and humidity (accuracy is ± 2%), can thus be characterized under specific temperature and humidity
Sample to be tested croop property.
(2) temperature sensor in sample room, humidity sensor, foil gauge and mechanics sensor and computer system connect
Connect, by computer system can be in real-time testing sample room temperature, humidity and act on pressure on sample to be tested,
Dependent variable, does not need to manual record data, test data science, accurate, comprehensively, and computer system can directly draw out creep song
Line, more intuitively；It is convenient and strength-saving for the longer test of test this detection cycle of croop property.
(3) existing test compression croop property takes around the time of 1 month, and when test has to wait for a sample test
After could continue the test of second sample, if n sample needs to test, need the time of n*1 months, test week
Phase is very long；And the present invention makes full use of the solid space of sample room, 4 layers of setting, 8 groups every layer of compression creep survey in sample room
Trial assembly is put, and can be tested the compression creep property of 1 to 32 group sample to be tested simultaneously, be cost saved experimental period, test period
Shorten, test efficiency improves.
(4) in addition, the multigroup sample to be tested of parallel testing, then be averaged simultaneously, can reduce experimental error.
(5) in addition, each group compression creep test device of the present invention is mutual indepedent, sample of the same race can be both tested simultaneously
32 groups of parallel testings can also test the croop property of sample not of the same race, also not interfere with each other simultaneously, very convenient.
(6) every group of equal reasonable design of compression creep test device of the invention, it is simple in structure, it occupies little space.
(7) present invention one does not need to swing weight-adding, and two control constant pressure without hydraulic pressure or motor driving pressure, but pass through
Bolt carrys out pressure of the control action in sample to be tested on rotating threaded rod, easy to operate, saves the energy, it is ensured that compression load
With long-term stability and reliability.
Description of the drawings
Fig. 1 is the structural representation for controlling the multigroup sample compression creep test device of synchronism detection under temperature and humidity condition of the present invention
Figure；
Fig. 2 is the structure diagram of the test device in inventive samples room；
Fig. 3 is the vertical view of bottom plate of the present invention；
Fig. 4 is that the deformation of the foil gauge in embodiment 1 changes with time relational graph；
Fig. 5 is that the deformation of the foil gauge in embodiment 2 changes with time relational graph；
Fig. 6 is that the deformation of the foil gauge in embodiment 3 changes with time relational graph；
Fig. 7 is that the deformation of the foil gauge in embodiment 4 changes with time relational graph；
Wherein, 1- temperature control systems, 2- humidity control systems, 3- sample rooms, 4- computer systems, 5- compression creeps are surveyed
Trial assembly is put, 6- guide rods, 7- mechanics sensors, 8- samples to be tested, 9- foil gauges, 10- bolts, 11- movable panels, 12- activities
Middle plate, 13- threaded rods, 14- bottom plates, 15- compressed springs, 16- threaded holes.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Include as shown in Figure 1, testing multigroup sample compression creep test device simultaneously under the control temperature and humidity condition of the present embodiment
Temperature control system 1, humidity control system 2, sample room 3 and computer system 4；Computer system 4 is directly connected to temperature control
System 1 and humidity control system 2, temperature control system 1 and humidity control system 2 connect to control in sample room 3 with sample room 3
(i.e. computer system 4 is controlled by temperature control system 1 and humidity control system 2 inside sample room 3 temperature and humidity in portion
Temperature and humidity)；Temperature sensor, humidity sensor and multigroup compression creep test device 5, temperature are equipped in sample room 3
Degree sensor and humidity sensor are connected with computer system 4, and computer system 4 is responsible for receiving and processing data.32 groups of compressions
Creep test device 5 is set as 4 layers, 8 groups every layer.
As shown in Fig. 2, compression creep test device 5 include guide rod 6, mechanics sensor 7, sample to be tested 8, foil gauge 9,
Plate 12, threaded rod 13, bottom plate 14, compressed spring 15 and threaded hole 16 in bolt 10, movable panel 11, activity；Compression creep is surveyed
The top, middle part and bottom that trial assembly puts 5 are respectively equipped with plate 12 and bottom plate 14 in movable panel 11, activity, and three is arranged in parallel；Bottom
Four apex angles of plate 14 are equipped with threaded hole 16, and threaded rod 13, the top of threaded rod 13 is fixedly installed in threaded hole 16 respectively
Equipped with mobilizable bolt 10, bolt 10 is located on movable panel 11；2 guide rods 6, guide rod are equipped at 14 middle part of bottom plate
6 and threaded rod 13 both pass through through-hole in movable panel 11 and activity on plate 12, the fit precision of through-hole and guide rod 6 is higher than
H6/f5, compressed spring 15 are set on guide rod 6 and between plates 12 in bottom plate 14 and activity；The fixation of mechanics sensor 7 is set
Put at the middle part of movable panel 11, sample to be tested 8 is placed in mechanics sensor 7 and activity between plate 12, mechanics sensor 7 with
Sample to be tested 8 is in direct contact, and real-time testing goes out the stress being applied on sample to be tested 8；Post foil gauge in the middle part of sample to be tested 8
9, sample deformation data are recorded in real time；Foil gauge 9 and mechanics sensor 7 are connect with computer system 4, computer system 4
Multichannel collecting and processing data are held, in short, the temperature, humidity, strain, mechanical signal in sample room 3 are passed by data line
Pass computer system 4.
Temperature control system 1 includes low-temperature receiver, heat source, heat-conducting medium, temperature controller, temperature control method for microcomputer temperature control and
PID is adjusted, ranging from -80~300 DEG C of temperature control, and precision is ± 0.1 DEG C, and temperature fluctuation is ± 0.05 DEG C.Humidity control system 2
Including dry gas and water, humidity controller, humid control range 0~100%, precision is ± 2%.Foil gauge 9 and mechanics sensor
7 precision is ± 1%, includes temperature compensation function.Computer system 4 include data-triggered, data record, data storage and
The devices such as data operation, synchronous recording system temperature, humidity, the dependent variable of the stress data of mechanics sensor 7 and foil gauge 9
According to support multichannel synchronousing collection data.
Embodiment 1
32 groups of nylon materials under 30%, 10 kilogram of 40 DEG C, relative humidity pressure condition, survey by the compression creep in 1 month
Examination；
Nylon material to be measured is attached to by the cylinder that injection molding machine is molded into high 20mm, basal diameter is 10mm, foil gauge 9
8 middle part of sample to be tested, sample to be tested 8 are placed aprowl between plate 12 and mechanics sensor 7, mechanics sensor 7 and foil gauge 9
It connect, is reset reading, while 4 bolts 10 of rotary top before test so that mechanics sensor 7 with computer system 4
After reading is 10.0 kilograms, one group of compression creep test device 5 is put into sample room 3, it is to be measured by 32 groups to repeat above step
Sample 8 is all put into sample room 3, and the temperature sensor, humidity sensor and computer system 4 in sample room 3 connect, sample
Room 3 is connect with temperature control system 1 and humidity control system 2, and temperature control system 1 and humidity control system 2 are by department of computer science
System 4 directly controls, and by 4 real-time collecting temperature of computer system, humidity, pressure and strain data.
Adjusting temperature is 40 DEG C, relative humidity 30%, and after system is stablized, measuring temperature in sample room 3 by sensor is
39.9 DEG C, relative humidity 28%；The deformation of start recording foil gauge 9 changes with time relationship (specific data refer to Fig. 4),
After continuing 1 month, calculate the nylon material 40 DEG C, 30%, 10 kilogram of pressure condition of relative humidity, compression creep in 1 month
Value, the compression creep average value are 0.49%.
Embodiment 2
32 groups of nylon materials under 90%, 10 kilogram of 40 DEG C, relative humidity pressure condition, survey by the compression creep in 1 month
Examination；
Nylon material to be measured is attached to by the cylinder that injection molding machine is molded into high 20mm, basal diameter is 10mm, foil gauge 9
8 middle part of sample to be tested, sample to be tested 8 are placed aprowl between plate 12 and mechanics sensor 7, mechanics sensor 7 and foil gauge 9
It connect, is reset reading, while 4 bolts 10 of rotary top before test so that mechanics sensor 7 with computer system 4
After reading is 10.0 kilograms, one group of compression creep test device 5 is put into sample room 3, it is to be measured by 32 groups to repeat above step
Sample 8 is all put into sample room 3, and the temperature sensor, humidity sensor and computer system 4 in sample room 3 connect, sample
Room 3 is connect with temperature control system 1 and humidity control system 2, and temperature control system 1 and humidity control system 2 are by department of computer science
System 4 directly controls, and by 4 real-time collecting temperature of computer system, humidity, pressure and strain data.
Adjusting temperature is 40 DEG C, relative humidity 90%, and after system is stablized, measuring temperature in sample room 3 by sensor is
39.9 DEG C, relative humidity 89%；The deformation of start recording foil gauge 9 changes with time relationship (specific data refer to Fig. 5),
After continuing 1 month, calculate the nylon material 40 DEG C, 90%, 10 kilogram of pressure condition, compression of 1 month of relative humidity it is compacted
Variate, the compression creep average value are 0.62%.
By Examples 1 and 2 as it can be seen that as humidity increases, the nylon material compression creep easily to absorb water also increases accordingly
Add.
Embodiment 3
32 groups of PBT materials under 30%, 10 kilogram of 25 DEG C, relative humidity pressure condition, survey by the compression creep in 1 month
Examination；
PBT material to be measured is attached to by the cylinder that injection molding machine is molded into high 20mm, basal diameter is 10mm, foil gauge 9
8 middle part of sample to be tested, sample to be tested 8 are placed aprowl between plate 12 and mechanics sensor 7, mechanics sensor 7 and foil gauge 9
It connect, is reset reading, while 4 bolts 10 of rotary top before test so that mechanics sensor 7 with computer system 4
After reading is 10.0 kilograms, one group of compression creep test device 5 is put into sample room 3, it is to be measured by 32 groups to repeat above step
Sample 8 is all put into sample room 3, and the temperature sensor, humidity sensor and computer system 4 in sample room 3 connect, sample
Room 3 is connect with temperature control system 1 and humidity control system 2, and temperature control system 1 and humidity control system 2 are by department of computer science
System 4 directly controls, and by 4 real-time collecting temperature of computer system, humidity, pressure and strain data.
Adjusting temperature is 25 DEG C, relative humidity 30%, and after system is stablized, measuring temperature in sample room 3 by sensor is
25.1 DEG C, relative humidity 30%；The deformation of start recording foil gauge 9 changes with time relationship (specific data refer to Fig. 6),
After continuing 1 month, the PBT material is calculated in 25 DEG C, relative humidity 30%, 10 kilogram of pressure condition, compression creep of 1 month
Value, the compression creep average value are 0.35%.
Embodiment 4
32 groups of PBT materials under 30%, 10 kilogram of 90 DEG C, relative humidity pressure condition, survey by the compression creep in 1 month
Examination；
PBT material to be measured is attached to by the cylinder that injection molding machine is molded into high 20mm, basal diameter is 10mm, foil gauge 9
8 middle part of sample to be tested, sample to be tested 8 are placed aprowl between plate 12 and mechanics sensor 7, mechanics sensor 7 and foil gauge 9
It connect, is reset reading, while 4 bolts 10 of rotary top before test so that mechanics sensor 7 with computer system 4
After reading is 10.0 kilograms, one group of compression creep test device 5 is put into sample room 3, it is to be measured by 32 groups to repeat above step
Sample 8 is all put into sample room 3, and the temperature sensor, humidity sensor and computer system 4 in sample room 3 connect, sample
Room 3 is connect with temperature control system 1 and humidity control system 2, and temperature control system 1 and humidity control system 2 are by department of computer science
System 4 directly controls, and by 4 real-time collecting temperature of computer system, humidity, pressure and strain data.
Adjusting temperature is 90 DEG C, relative humidity 30%, and after system is stablized, measuring temperature in sample room 3 by sensor is
89.9 DEG C, relative humidity 30%；The deformation of start recording foil gauge 9 changes with time relationship (specific data refer to Fig. 7),
After continuing 1 month, the PBT material is calculated in 90 DEG C, relative humidity 30%, 10 kilogram of pressure condition, compression creep of 1 month
Value, the compression creep average value are 0.48%.
By embodiment 3 and 4 as it can be seen that as temperature increases, PBT material compression creep is also accordingly increasing.
The foregoing is merely preference embodiments of the present invention, are not intended to limit the scope of the present invention..It is any
All any modification, equivalent and improvement made within the spirit and principles in the present invention etc. should be included in the power of the present invention
Within the scope of profit is claimed.
Claims (9)
1. test multigroup sample compression creep test device simultaneously under a kind of control temperature and humidity condition, which is characterized in that described device packet
Temperature control system, humidity control system, sample room and computer system are included, computer system connects temperature control system respectively
And humidity control system, temperature control system and humidity control system connect to control the indoor temperature of sample and wet with sample room
It spends, temperature sensor, humidity sensor and multigroup compression creep test device, temperature sensor and humidity is equipped in sample room
Sensor is connected with computer system；The precision of the temperature control system is ± 0.1 DEG C；The precision of humidity control system for ±
2%；
The compression creep test device include guide rod, mechanics sensor, foil gauge, bolt, movable panel, activity in plate,
Threaded rod, bottom plate and compressed spring；Top, middle part and the bottom of compression creep test device be arranged in parallel respectively movable panel,
Plate and bottom plate in activity, four apex angles of bottom plate, which are equipped with, puts threaded rod, and the top of threaded rod is equipped with mobilizable bolt, bolt
On movable panel；Portion is equipped with guide rod in the soleplate, and guide rod and threaded rod both pass through plate in movable panel and activity
On through-hole, compressed spring is arranged on the guide bar and between plate in bottom plate and activity；Mechanics sensor is fixed at
The middle part of movable panel, sample to be tested are placed in mechanics sensor and activity between plate, and the shape of sample to be tested is cylinder；
Mechanics sensor is in direct contact with sample to be tested, can real-time testing go out the stress being applied on sample to be tested；In sample to be tested
Foil gauge is posted in portion, records the deformation data of sample to be tested in real time；Foil gauge and mechanics sensor are connect with computer system,
Dependent variable and the relationship of time under specified pressure are recorded with computer system；Phase between compression creep test device described in each group
It is mutually independent.
2. multigroup sample compression creep test device is tested simultaneously under a kind of control temperature and humidity condition as described in claim 1, it is special
Sign is that four apex angles of the bottom plate are equipped with threaded hole, and threaded rod is fixedly installed in threaded hole respectively.
3. multigroup sample compression creep test device is tested simultaneously under a kind of control temperature and humidity condition as described in claim 1, it is special
Sign is that the guide rod is equipped with 2, and guide rod is symmetrical arranged on bottom plate.
4. multigroup sample compression creep test is tested simultaneously under a kind of control temperature and humidity condition as described in claim 1-3 is one of arbitrary
Device, which is characterized in that the fit precision of the through-hole and guide rod is higher than H6/f5.
5. multigroup sample compression creep test is tested simultaneously under a kind of control temperature and humidity condition as described in claim 1-3 is one of arbitrary
Device, which is characterized in that the temperature control system includes low-temperature receiver controller, heat source controller, heat-conducting medium controller, temperature
Controller, temperature control method are adjusted for microcomputer temperature control and PID, ranging from -80~300 DEG C of temperature control, and temperature fluctuation is ± 0.05 DEG C.
6. multigroup sample compression creep test is tested simultaneously under a kind of control temperature and humidity condition as described in claim 1-3 is one of arbitrary
Device, which is characterized in that the humidity control system includes dry gas controller, feeding control instrument and humidity controller, humidity control
System ranging from 0~100%.
7. multigroup sample compression creep test is tested simultaneously under a kind of control temperature and humidity condition as described in claim 1-3 is one of arbitrary
Device, which is characterized in that the precision of the foil gauge and mechanics sensor is ± 1%.
8. multigroup sample compression creep test is tested simultaneously under a kind of control temperature and humidity condition as described in claim 1-3 is one of arbitrary
Device, which is characterized in that 32 groups of compression creep test devices are equipped in the sample room, are divided into 4 layers, 8 groups every layer.
9. multigroup sample compression creep test device is tested simultaneously under a kind of control temperature and humidity condition as described in claim 1, it is special
Sign is, the cylinder that the sample to be tested is high 20mm, basal diameter is 10mm.
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| CN108279166A (en) * | 2018-04-19 | 2018-07-13 | 南京理工大学 | A kind of compressed spring loading device and its test method for material aging experiment |
| CN109030234B (en) * | 2018-09-19 | 2024-03-12 | 中国工程物理研究院化工材料研究所 | System and method for testing long-time creep property of explosive |
| CN109406304A (en) * | 2018-12-06 | 2019-03-01 | 南京工业大学 | High-throughput multiple compression creep test device and compression creep test method |
| CN109669424B (en) * | 2019-01-10 | 2024-02-09 | 清华大学 | Rock mechanical property test control system and method under complex condition |
| CN109870356A (en) * | 2019-01-28 | 2019-06-11 | 北京理工大学 | Multi-channel wide should broaden the propellant compression stress test device of temperature range high security |
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Effective date of registration: 20161209 Address after: 211106 Jiangning City, Nanjing Province, the integrity of the road No. 19, Applicant after: Nanjing Nari Co., Ltd. Applicant after: Electric Power Research Institute of State Grid Shandong Electric Power Company Address before: 211106 Jiangning City, Nanjing Province, the integrity of the road No. 19, Applicant before: Nanjing Nari Co., Ltd. |
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