CN202119748U - Testing device for corrosion fatigue crack growth - Google Patents
Testing device for corrosion fatigue crack growth Download PDFInfo
- Publication number
- CN202119748U CN202119748U CN2011201731684U CN201120173168U CN202119748U CN 202119748 U CN202119748 U CN 202119748U CN 2011201731684 U CN2011201731684 U CN 2011201731684U CN 201120173168 U CN201120173168 U CN 201120173168U CN 202119748 U CN202119748 U CN 202119748U
- Authority
- CN
- China
- Prior art keywords
- plate sample
- test
- test box
- box body
- resistance measurement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a testing device for corrosion fatigue crack growth, which comprises a test box body, a test box cover and a plate sample, wherein the test box cover is arranged at the upper end of the test box body; a vertically through plate sample plughole is arranged on the test box body and the test box cover; the plate sample is plugged and fixed in the plate sample plughole; a resistance measurement piece is arranged on the plate sample and is respectively communicated with a voltmeter arranged outside the test box body and a direct current constant current source; a loading chuck is arranged at the upper end of the plate sample; and a fixing chuck is arranged at the lower end of the plate sample. By means of the testing device provided by the utility model, the change of the crack length in a corrosion solution can be conveniently and rapidly measured in real time to ensure that the measurement of the crack growth rate is more convenient and accurate; the test system is simple in structure and wide in application; and the used consumable materials are cheap and easy to obtain, so that the popularization of the test system is facilitated.
Description
Technical field
The utility model relates to a kind of proving installation that is used for the corrosion fatigue crack expansion.
Background technology
The corrosion fatigue problem is the ubiquitous problem of petroleum chemical industry, and the corrosion fatigue crack extend testing is a kind of common performance test test of metal material under corrosion environment.The corrosion of metal fatigue crack growth rate is measured general reference standard GB6398-2000 " metal material fatigue crack growth rate test method " and is carried out, but test unit needs design voluntarily.The general employing of the proving installation of corrosion fatigue crack spreading rate is at present fallen and is carried the process of colluding collimation method record crack Propagation, and testing efficiency is low, and the result exists than mistake, and the result reads very inconvenient.
The utility model content
The utility model technical matters to be solved provides a kind of can the expansion and the efficient of raising corrosion fatigue crack spreading rate test and the proving installation that is used for the corrosion fatigue crack expansion of accuracy by convenient, fast and accurate record corrosion fatigue crack.
The utility model adopts following technical scheme:
It comprises the utility model the test casing, is arranged at test case lid and the plate sample of testing the casing upper end; Described test casing covers the plate sample jack that is provided with vertical perforation with test box; Described plate sample is plugged in the plate sample jack and is fixed in the plate sample jack; Described plate sample is provided with the resistance measurement sheet; Described resistance measurement sheet is communicated with respectively with voltage table that is arranged at the test box external and dc constant current power supply, and the upper end of plate sample is provided with the loading chuck, and the lower end of plate sample is provided with fixed chuck.
The good effect of the utility model is following:
The utility model obtains centre burst plate sample mensuration metallic material corrosion fatigue crack growth rate through the variation of gathering crack length in the resistance measurement sheet measurement Fatigue Cracks Propagation; The utility model test macro is converted into changes in resistance with the increment of crack length in the crack propagation process; And then be converted into the variation of voltage, and measure through voltage table.
The utility model can conveniently be measured the variation of crack length in the etchant solution in real time, makes the mensuration of crack growth rate convenient, accurate.Test system structure is simple, applicability is wide, used consumptive material low price, obtains easily, is convenient to the popularization of test macro.
Description of drawings
Accompanying drawing 1 is the utility model structural representation;
Accompanying drawing 2 is the utility model principle schematic;
Accompanying drawing 3 is the utility model resistor disc structural representation.
In the accompanying drawings: 1 test casing, 2 test case lids, 3 plate samples, 4 plate sample jacks, 5 plate sample jacks, 6 resistance measurement sheets, 7 voltage tables, 8 dc constant current power supplies, 9 load chuck, 10 fixed chucks.
Embodiment
Shown in accompanying drawing 1; The utility model comprises test casing 1, is arranged at the test case lid 2 and the plate sample 3 of test casing 1 upper end; Described test casing 1 is provided with plate sample jack 4, the plate sample jack 5 of vertical perforation with test case lid 2; Described plate sample 3 is plugged in plate sample jack 4, the plate sample jack 5 and is fixed in the plate sample jack 5, and described plate sample 3 is provided with resistance measurement sheet 6, and described resistance measurement sheet 6 is communicated with respectively with the voltage table 7 and the dc constant current power supply 8 that are arranged at test casing 1 outside; The upper end of plate sample 3 is provided with and loads chuck 9, and the lower end of plate sample 3 is provided with fixed chuck 10.
The processing of plate sample 3 is carried out with reference to relevant criterion; Test casing 1 is made according to accompanying drawing 1 by organic glass with test case lid 2.Test casing 1 is square open-top receptacle, and length is not less than the twice of plate sample 3 width, and width is not less than ten times of plate sample 3 thickness, highly is not less than three times of resistance measurement sheet 6 width; Test case lid 2 is identical with test casing 1 sectional dimension; Test casing 1 is opened the square hole that size is slightly larger than plate sample 3 cross sections with test case lid 2 in the central area.
According to accompanying drawing 2 resistance measurement sheet 6 is adopted near the firm tip that is attached to crackle 3 of 502 glue, and will put A, B, C, D and connect lead respectively; With latex according to shown in cover whole resistance measurement sheets 6 and terminal and do insulation and handle, leave standstill more than eight hours and solidify.
Press shown in the accompanying drawing 3, need to test casing 1 earlier before test is carried out and be connected with plate sample 3.Take certain measure, keep test casing 1 constant with plate sample 3 relative positions, test casing 1 inside and outside smeared an amount of AB glue respectively at plate sample jack 5 places respectively, leaves standstill to make the AB gelling solid in 24 hours, accomplishes being connected of test casing 1 and plate sample 3; According to accompanying drawing 1 clear water is joined in the test casing 1; Cover test case lid 2, adhesive tape is sticked on plate sample jack 4 and environmental cabinet seals at, observe whether to have to leak and take place; If any leaking the seal operation that plate sample jack 5 takes place then need accomplish again; Do not take place if having to leak, then plate sample 3 and test casing 1 are carried out load test, the intensity of test board sample jack 5 together.If intensity does not satisfy condition, then need carry out the sealing of plate sample jack 5 again.
According to above-mentioned steps, change clear water into etchant solution, four input/output terminals of A, B, C, D of resistance measurement sheet 6 are connected on voltage table 7 and the dc constant current power supply 8 according to accompanying drawing 1; Plate sample 3 is fixed on MTS testing machine fixed chuck 10 and loads on the chuck 9; Load test; At regular intervals; Recording voltmeter 7 registrations; Calculating voltage variable quantity
, and adopt formula
counting crack length variable quantity
.
The utility model can conveniently be measured the variation of crack length in the etchant solution in real time, makes the mensuration of crack growth rate convenient, accurate.Test system structure is simple, applicability is wide, used consumptive material low price, obtains easily, is convenient to the popularization of test macro.
Claims (1)
1. one kind is used for the proving installation that corrosion fatigue crack is expanded; It is characterized in that it comprises test casing (1), is arranged at test case lid (2) and the plate sample (3) of testing casing (1) upper end; Described test casing (1) is provided with the plate sample jack (4,5) of vertical perforation with test case lid (2); Described plate sample (3) is plugged in the plate sample jack (4,5) and is fixed in the plate sample jack (5); Described plate sample (3) is provided with resistance measurement sheet (6); Described resistance measurement sheet (6) voltage table (7) and the dc constant current power supply (8) outside with being arranged at test casing (1) is communicated with respectively, and the upper end of plate sample (3) is provided with and loads chuck (9), and the lower end of plate sample (3) is provided with fixed chuck (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201731684U CN202119748U (en) | 2011-05-27 | 2011-05-27 | Testing device for corrosion fatigue crack growth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201731684U CN202119748U (en) | 2011-05-27 | 2011-05-27 | Testing device for corrosion fatigue crack growth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202119748U true CN202119748U (en) | 2012-01-18 |
Family
ID=45460803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201731684U Expired - Fee Related CN202119748U (en) | 2011-05-27 | 2011-05-27 | Testing device for corrosion fatigue crack growth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202119748U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565140A (en) * | 2012-02-20 | 2012-07-11 | 南京航空航天大学 | Method for measuring fatigue crack growth rate on basis of potential method |
| CN104931373A (en) * | 2015-06-12 | 2015-09-23 | 中国科学院金属研究所 | Corrosion fatigue crack propagation testing device |
| CN105738464A (en) * | 2016-02-17 | 2016-07-06 | 江苏海上龙源风力发电有限公司 | Early-stage corrosion fatigue monitoring process suitable for offshore wind power steel structure base |
-
2011
- 2011-05-27 CN CN2011201731684U patent/CN202119748U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565140A (en) * | 2012-02-20 | 2012-07-11 | 南京航空航天大学 | Method for measuring fatigue crack growth rate on basis of potential method |
| CN104931373A (en) * | 2015-06-12 | 2015-09-23 | 中国科学院金属研究所 | Corrosion fatigue crack propagation testing device |
| CN105738464A (en) * | 2016-02-17 | 2016-07-06 | 江苏海上龙源风力发电有限公司 | Early-stage corrosion fatigue monitoring process suitable for offshore wind power steel structure base |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101419257B (en) | Ground electric field measurement system for AC/DC parallel powerline and measurement method thereof | |
| CN202119748U (en) | Testing device for corrosion fatigue crack growth | |
| CN102072925A (en) | Stroma moisture and conductivity in situ detector and method for determining salinity | |
| CN108426926B (en) | Device for detecting and identifying micro plastic based on dielectric loss tangent value | |
| CN103940854A (en) | Rapid detector capable of simultaneously detecting pesticide and heavy metal residues in fruits and vegetables | |
| CN1601265A (en) | Analyzer for analyzing moisture in ground conductance | |
| CN103954691B (en) | Nondestructive detection method for material composition fractions | |
| CN203148889U (en) | Nondestructive testing device | |
| CN201974399U (en) | Matrix humidity and conductivity in-situ detector | |
| CN203870059U (en) | Portable sulfur and nitrogen elemental analyzer | |
| CN203275352U (en) | Heavy metal ion detector | |
| CN202433326U (en) | Absorbent thickness expansion ratio tester | |
| CN205228499U (en) | Measurement device for be used for current vortex sensor | |
| CN102495082A (en) | Microwave on-line detection device of ethanol water solution components and detection method thereof | |
| CN103940888A (en) | Method used for detecting anti-oxidant content of transformer oil via linear sweep voltammetry | |
| CN203688394U (en) | Adsorbed gas analyzer | |
| CN203672973U (en) | Device used for automatic test of crystal bar resistor | |
| CN203037741U (en) | Device for testing resistivity of solar cell material under high temperature | |
| CN202870084U (en) | Detection device | |
| CN202533509U (en) | Automatic testing device for resistivity and power frequency current withstand test of resistance-reducing agent | |
| CN205786452U (en) | A kind of amount of viable cell measuring instrument | |
| CN201867149U (en) | Device for testing aperture of filter screen | |
| CN203838249U (en) | Nondestructive detection device used for measuring dielectric properties of tomatoes | |
| CN201628555U (en) | Multifunctional parameter recorder | |
| CN2755602Y (en) | Multifunctional electrochemical corrosion measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20120527 |