CN111721617A - Axial tensile test device and method for test piece in constant-temperature erosion environment - Google Patents
Axial tensile test device and method for test piece in constant-temperature erosion environment Download PDFInfo
- Publication number
- CN111721617A CN111721617A CN202010753054.0A CN202010753054A CN111721617A CN 111721617 A CN111721617 A CN 111721617A CN 202010753054 A CN202010753054 A CN 202010753054A CN 111721617 A CN111721617 A CN 111721617A
- Authority
- CN
- China
- Prior art keywords
- test piece
- piece
- erosion
- mounting
- stress
- 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.)
- Pending
Links
Images
Classifications
-
- 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
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0236—Other environments
- G01N2203/024—Corrosive
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses an axial tensile test device and a test method of a test piece in a constant temperature erosion environment. The constant temperature mechanism is formed with the thermostatic chamber, and the temperature in thermostatic chamber can set up to the default. The erosion mechanism is provided with an erosion groove, and erosion liquid is arranged in the erosion groove. The mounting mechanism is used for fixedly mounting a test piece, the mounting mechanism is arranged in the erosion groove, and the liquid level of the erosion liquid is higher than the top wall of the test piece. The stress loading mechanism is arranged on the mounting mechanism, two ends of the test piece are respectively connected with the mounting mechanism and the stress loading mechanism, and the stress loading mechanism can apply a preset axial tensile load on the test piece. The stress detection mechanism is arranged on the test piece and can detect the stress on different positions of the test piece. The tensile test can be conveniently carried out on the test piece under various constant temperature conditions, erosion conditions and load conditions.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to an axial tension test device and a test method of a test piece in a constant-temperature erosion environment.
Background
The actual concrete structure is often damaged due to the effects of load bearing and environmental factors (temperature), so that the microstructure inside the concrete is changed, and the durability and mechanical properties of the concrete are further influenced. The temperature in natural environment has obvious time-varying property, and the temperature in concrete always changes along with the change of the environmental temperature. Under the environment of variable temperature, the concrete structure not only bears the load effect, but also can be influenced by the temperature stress, when the tensile stress generated by the combined action of the stress field and the temperature field exceeds the tensile strength of the concrete, cracks can be generated, and the mechanical property and the durability of the concrete structure can be influenced by the occurrence of the cracks. Meanwhile, the protection effect of the concrete on the steel bars is reduced, the corrosion rate of the steel bars in the concrete is accelerated, and the service life of the concrete structure is shortened. Therefore, a device capable of performing axial tensile tests on test pieces under various different constant-temperature erosion environments and various different axial loads is needed.
Disclosure of Invention
The invention aims to provide an axial tensile test device of a test piece in a constant temperature erosion environment, which can complete an axial tensile test on the test piece in various different constant temperature erosion environments and various different axial loads.
The invention also aims to provide an axial tensile test method of the test piece in the constant temperature corrosion environment, which can enable the test piece to be subjected to axial tensile test in different constant temperature environments, different corrosion environments and different axial tensile loads.
In order to achieve the technical effects, the axial tensile test device and the test method of the test piece in the constant temperature corrosion environment have the following technical scheme:
an axial tensile test device of a test piece under a constant temperature corrosion environment comprises: the constant temperature mechanism is provided with a constant temperature cavity, and the temperature of the constant temperature cavity can be set to be a preset value; the erosion mechanism is arranged in the constant temperature cavity, an erosion groove is formed in the erosion mechanism, and erosion liquid is arranged in the erosion groove; the mounting mechanism is used for fixedly mounting a test piece, the mounting mechanism is arranged in the erosion groove, and the liquid level of the erosion liquid is higher than the top wall of the test piece; the stress loading mechanism is arranged on the mounting mechanism, two ends of the test piece are respectively connected with the mounting mechanism and the stress loading mechanism, and the stress loading mechanism can apply a preset axial tensile load on the test piece; the stress detection mechanism is arranged on the test piece and can detect the stress on different positions of the test piece.
Furthermore, the stress detection mechanism comprises a plurality of groups of stress detection assemblies, the stress detection assemblies are arranged at intervals along the length direction of the test piece, each group of stress detection assemblies comprises a plurality of stress detection pieces, and two opposite side walls of the test piece are respectively provided with one stress detection piece.
Further, the mounting mechanism includes: the supporting piece is connected with one end of the test piece; a mount located above the support; the connecting piece is arranged on the supporting piece and the mounting piece in a penetrating mode and connected with the supporting piece; the retaining member, the retaining member with connecting piece threaded connection, the retaining member can be in predetermineeing highly will the installed part locking.
Further, the stress loading mechanism includes: the loading piece is arranged in the mounting piece in a penetrating mode, and one end of the loading piece is connected with the test piece; the driving piece, the driving piece cover is established on the loading piece and with loading piece threaded connection, the driving piece can the butt be in on the roof of installed part.
Further, the loading piece comprises a loading portion and a connecting portion, the connecting portion penetrates through the installation piece and is in threaded connection with the installation piece, two ends of the connecting portion are respectively connected with the loading portion and the test piece, and the loading portion and the connecting portion are integrally formed.
Further, the driving member includes a nut.
Further, the retaining member includes two nuts, and the two nuts abut against the top wall of the mounting member and the bottom wall of the mounting member respectively.
Further, the installation mechanism and the stress loading mechanism are connected with the test piece through steel adhesive.
Further, the axial tensile test device of the test piece in the constant temperature erosion environment further comprises two clamping pieces, the mounting mechanism and the stress loading mechanism are both provided with the clamping pieces, and the mounting mechanism and the stress loading mechanism are connected with the test piece through the clamping pieces.
An axial tensile test method of a test piece in a constant temperature corrosion environment, which adopts the axial tensile test device of the test piece in the constant temperature corrosion environment, comprises the following steps: s1, arranging the erosion liquid in the erosion groove, placing the erosion mechanism in the constant temperature mechanism, and setting the temperature of the constant temperature cavity to be a preset value; s2, connecting two ends of the test piece with the supporting piece and the loading piece respectively, installing the stress detection mechanism on the test piece, and locking the installation piece at a preset height by using the locking piece; s3, tightening the driving piece by using a tool, and continuing to tighten the driving piece after the driving piece is abutted against the mounting piece so as to apply the preset axial tensile load to the test piece; s4, placing the mounting mechanism and the stress loading mechanism provided with the test piece in the erosion liquid, and enabling the liquid level of the erosion liquid to be higher than the top wall of the test piece; and S5, taking out the mounting mechanism and the stress loading mechanism after the time that the test piece is eroded by the erosion liquid reaches a preset time, and taking out and analyzing the parameters of the test piece.
The invention has the beneficial effects that: the constant temperature mechanism can provide a constant temperature environment with preset temperature for a cement-based test, and the erosion mechanism can provide erosion environments such as acids, alkalis and salts with different types and different concentrations, so that the test piece can be subjected to axial tensile tests at different preset temperatures and different erosion environments, and related data such as durability of the cement-based material under different loads in real use environments can be simulated. The mounting mechanism can fixedly mount the test piece, so that when the stress loading mechanism applies a preset axial tensile load to the test piece, the test piece does not generate relative displacement with the mounting mechanism under the fixing action of the mounting mechanism, and the stress loading mechanism can accurately and reliably apply the preset stress tensile load to the test piece. The stress detection mechanism can detect the stress on different positions of the test piece, can ensure that the tensile stress borne by the test piece is consistent with the preset axial tensile stress applied to the test piece by the stress loading mechanism, and can also ensure that the tensile stress borne by the test piece is the axial tensile stress by comparing the stress on different positions of the test piece, thereby improving the accuracy of the test and the reliability of the test result. According to the axial tensile test device of the test piece in the constant temperature corrosion environment, different constant temperature environments, different corrosion environments and different axial tensile loads can be provided, so that an operator can complete the axial tensile test of the test piece under various different conditions, and the operator can analyze related performance parameters such as the durability of the test piece under the combined action of different axial tensile loads and environmental factors.
The invention has the following beneficial effects: due to the adoption of the axial tensile test device for the test piece in the constant-temperature erosion environment, the axial tensile test can be performed on the test piece in different constant-temperature environments, different erosion environments and different axial tensile loads, and the performance analysis of the test piece subjected to the axial tensile test in different conditions is facilitated for operators, so that the change process of the structural performance of the test piece under the load action and the environmental factor action is determined, the relevant data basis is provided for the durability design of the test piece, and the full-life design of the test piece and the reasonable formulation of the maintenance decision scheme are realized.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural diagram of an axial tensile test apparatus of a test piece in a constant temperature corrosion environment according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a mounting mechanism, a stress loading mechanism, a stress detection piece and a test piece according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a connector according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a loading member according to an embodiment of the present invention.
Reference numerals
1. A constant temperature mechanism; 11. a constant temperature cavity; 12. constant temperature liquid;
2. an erosion mechanism; 21. an erosion groove; 22. an etching solution;
3. an installation mechanism; 31. a support member; 32. a mounting member; 33. a connecting member; 331. a first thread segment; 332. a first smooth section; 333. a limiting part; 34. a locking member;
4. a stress loading mechanism; 41. a loading member; 411. a connecting portion; 4111. a second thread segment; 4112. a second smoothing section; 412. a loading section; 42. a drive member;
5. a stress detection member;
100. and (5) testing the test piece.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The specific structure of an axial tensile test apparatus of a test piece in a constant temperature corrosion environment according to an embodiment of the present invention will be described below with reference to fig. 1 to 4.
As shown in fig. 1-4, fig. 1 discloses an axial tensile test device of a test piece in a constant temperature corrosion environment, which comprises a constant temperature mechanism 1, a corrosion mechanism 2, an installation mechanism 3, a stress loading mechanism 4 and a stress detection mechanism. The thermostatic mechanism 1 is formed with a thermostatic chamber 11, and the temperature of the thermostatic chamber 11 can be set to a preset value. The erosion mechanism 2 is arranged in the thermostatic chamber 11, an erosion groove 21 is formed on the erosion mechanism 2, and an erosion liquid 22 is arranged in the erosion groove 21. The mounting mechanism 3 is used for fixedly mounting the test piece 100, the mounting mechanism 3 is arranged in the erosion groove 21, and the liquid level of the erosion liquid 22 is higher than the top wall of the test piece 100. The stress loading mechanism 4 is arranged on the mounting mechanism 3, two ends of the test piece 100 are respectively connected with the mounting mechanism 3 and the stress loading mechanism 4, and the stress loading mechanism 4 can apply a preset axial tensile load on the test piece 100. The stress detection mechanism is provided on the test piece 100, and is capable of detecting stress at different positions of the test piece 100.
It can be understood that the constant temperature mechanism 1 can provide a constant temperature environment with a preset temperature for a cement-based test, and the erosion mechanism 2 can provide erosion environments with different types and concentrations, such as acid, alkali, salt and the like, so that the test piece 100 can perform an axial tensile test at different preset temperatures and in different erosion environments, and related data such as durability of the cement-based material under different loads in a real use environment can be simulated. The mounting mechanism 3 can fixedly mount the test piece 100, so that when the stress loading mechanism 4 applies a preset axial tensile load to the test piece 100, the test piece 100 does not relatively displace with the mounting mechanism 3 under the fixing action of the mounting mechanism 3, and the stress loading mechanism 4 can accurately and reliably apply the preset stress tensile load to the test piece 100. The stress detection mechanism can detect the stress of the test piece 100 at different positions, can ensure that the tensile stress borne by the test piece 100 is consistent with the preset axial tensile stress exerted on the test piece 100 by the stress loading mechanism 4, and can also ensure that the tensile stress borne by the test piece 100 is the axial tensile stress by comparing the stress of the test piece 100 at different positions, thereby improving the test accuracy and the reliability of the test result.
According to the axial tensile test device of the test piece under the constant temperature corrosion environment of the embodiment, different constant temperature environments, different corrosion environments and different axial tensile loads can be provided, so that an operator can complete the axial tensile test of the test piece 100 under various different conditions, and the analysis of the durability and other related performance parameters of the test piece 100 under the combined action of different axial tensile loads and environmental factors is facilitated.
Optionally, the test piece 100 of the present embodiment can be configured as a cement-based test piece, which is beneficial for an operator to analyze the durability of the concrete structure under the action of tensile load and environmental factors. Of course, in other embodiments of the present invention, the test piece 100 is not limited to a cement-based test piece, and may be made of other materials, and the material of the test piece 100 may be determined according to actual requirements, and is not specifically limited herein.
Optionally, the top wall of the test piece 100 is 3mm-5mm high from the liquid level of the erosion liquid 22, so as to ensure that the test piece 100 can be completely in the preset erosion environment in the test process.
Illustratively, the acid environment may be set to HCl, H2SO4、HNO3The alkaline environment can be set to NaOH, KOH and other solutions, and the salt solution can be set to NaCl, MgCl and other solutions2、Na2SO4、MgSO4And the like. Of course, in the actual test process, the erosion environment can be determined according to actual requirements, and is not specifically limited herein.
Alternatively, the thermostatic chamber 11 is provided with a thermostatic liquid 12 to provide a thermostatic environment, and the thermostatic liquid 12 may be provided as water, but a heating pipe can be provided on the thermostatic mechanism 1 to provide a thermostatic environment in other embodiments of the present invention, and is not particularly limited herein.
Alternatively, the erosion mechanism 2 can be provided as a plastic container having good weather resistance, so as to provide a constant temperature erosion environment for the test piece 100.
In some embodiments, as shown in fig. 2, the stress detection mechanism includes a plurality of sets of stress detection assemblies, the stress detection assemblies are arranged at intervals along the length direction of the test piece 100, each set of stress detection assembly includes a plurality of stress detection pieces 5, and one stress detection piece 5 is respectively arranged on two opposite side walls of the test piece 100.
It can be understood that, the multiple sets of stress detection assemblies are provided with the axial tensile stress which is beneficial to the operator to determine the different parts of the test piece 100 under the preset tensile load along the length direction of the test piece 100, the operator can determine whether the tensile load received by the test piece 100 is the axial tensile load by comparing the detection data of the stress detection pieces 5 on the two oppositely-arranged side walls of the test piece 100, and the tensile load received by the test piece 100 can be considered as the axial tensile load when the difference value of the detection data of the stress detection pieces 5 on the two oppositely-arranged side walls of the test piece 100 is within the preset range, so that the adaptability and the test accuracy of the test device are improved.
By way of example, in the present embodiment, the test piece 100 can be provided as a prism member having a plurality of side walls. Of course, in other embodiments of the present invention, the test piece 100 may be configured in other shapes, and it can be determined whether the load applied to the test piece 100 is an axial tensile load by detecting the tensile stress on the two symmetrical sidewalls of the test piece 100, and the specific shape of the test piece 100 is not limited herein.
Optionally, the stress detection member 5 is a strain gauge, and the specific type of the strain gauge is a conventional means in the electrical field, and can be determined according to actual requirements, which is not described herein again. Further, the stress detection member 5 further includes an anti-corrosion structure, such as epoxy resin, and the strain gauge can be sealed in the epoxy resin and then mounted on the test piece 100, so as to avoid direct contact of the strain gauge with the erosion liquid 22, and ensure normal use of the strain gauge.
In some embodiments, as shown in FIG. 2, mounting mechanism 3 includes a support member 31, a mounting member 32, a connecting member 33, and a retaining member 34. One end of the test piece 100 is connected to the support 31. The mounting member 32 is located above the support member 31. The connecting piece 33 is arranged on the supporting piece 31 and the mounting piece 32 in a penetrating way, and the connecting piece 33 is connected with the supporting piece 31. The locking member 34 is threadedly coupled to the connecting member 33, and the locking member 34 can lock the mounting member 32 at a predetermined height.
It can be understood that when the mounting member 32 is at the preset height, the locking member 34 can lock the mounting member 32 on the connecting member 33 at the preset height, so that the test piece 100 can be fixed on the mounting mechanism 3 under the action of the stress loading mechanism 4, so that the test piece 100 cannot be displaced relative to the fixing mechanism when the stress loading mechanism 4 applies an axial tensile load to the test piece 100, and the reliability of the axial tensile load applied to the test piece 100 by the stress loading mechanism 4 is ensured.
Alternatively, two connecting members 33 are provided, the two connecting members 33 are arranged at intervals, and the test piece 100 is arranged between the two connecting members 33, so that the test piece 100 can be better fixed on the support member 31.
Optionally, the connecting member 33 includes a first threaded section 331, a first smooth section 332 and a limiting part 333, which are connected in sequence, the limiting part 333 abuts against the bottom wall of the support member 31, the first smooth section 332 is inserted into the support member 31, the first threaded section 331 is inserted into the mounting member 32, and the locking member 34 locks the mounting member 32 on the first threaded section 331 through a threaded connection. Of course, in other embodiments of the present invention, the connecting member 33 may be connected to the supporting member 31 by an integrally formed connecting method, and the connecting method is not particularly limited herein.
Illustratively, the supporting member 31 and the mounting member 32 can be made of stainless steel plates, and the connecting member 33 can be made of stainless steel screws, which have better weather resistance and strength, but in other embodiments of the present invention, the supporting member 31, the mounting member 32 and the connecting member 33 can be made of other erosion-resistant materials that are not easily stretched, and are not limited in particular.
In some embodiments, as shown in fig. 2, the stress loading mechanism 4 includes a loading member 41 and a driving member 42. The loading member 41 is inserted into the mounting member 32, and one end of the loading member 41 is connected to the test piece 100. The driving member 42 is sleeved on the loading member 41 and is in threaded connection with the loading member 41, and the driving member 42 can abut against the top wall of the mounting member 32.
It can be understood that, when the locking member 34 locks the mounting member 32 on the connecting member 33, the mounting member 32 does not displace relative to the test piece 100, and after the driving member 42 abuts on the top wall of the mounting member 32, because the driving member 42 is screwed with the loading member 41, when the operator drives the driving member 42 to rotate towards the direction approaching to the mounting member 32 by using a tool such as a torque wrench, the driving member 42 cannot displace under the limitation of the mounting member 32, so that the loading member 41 screwed with the driving member 42 will move slightly in the direction away from the mounting member 32, and apply a tensile load in the direction away from the mounting member 32 to the test piece 100 connected with the loading member 41, when the direction away from the mounting member 41 is consistent with the axial direction of the test piece 100, the loading member 41 applies an axial tensile load to the test piece 100 under the action of the driving member 42, so that the test piece 100 can be preset in a constant temperature environment and an erosion environment under the action of the axial tensile load continuously Axial tensile test.
According to the stress loading mechanism 4 of this embodiment, axial tensile load can be simply and rapidly applied to the test piece 100, and because it need not the support of precision instrument, the stress loading mechanism 4 can be put into the erosion groove 21 after finishing fixing, the test piece 100 of being convenient for carries out axial tensile test in the preset time and in the erosion environment, can enough reduce test device's cost, also can improve tensile test's under the constant temperature erosion environment reliability, convenience and variety.
Alternatively, the mounting mechanism 3 and the stress loading mechanism 4 can be provided in plural numbers, so that the operator can perform the axial tension test on a plurality of identical test pieces 100 at the same time and determine the relevant data according to the test results of the plurality of identical test pieces 100, thereby ensuring the accuracy of the test.
In some embodiments, as shown in fig. 4, the loading member 41 includes a loading portion 412 and a connecting portion 411, the connecting portion 411 is inserted into the mounting member 32 and is screwed with the mounting member 32, two ends of the connecting portion 411 are respectively connected with the loading portion 412 and the test piece 100, and the loading portion 412 and the connecting portion 411 are integrally formed.
It will be appreciated that the loading member 41 is driven by the driving member 42 to apply an axial tensile load to the test piece 100 by the arrangement of the loading portion 412 and the connecting portion 411. The integrally formed part is convenient to process, load loss when the connecting part 411 transmits tensile load to the loading part 412 can be avoided, and accuracy and reliability of a tensile test are improved.
Alternatively, the cross-sectional area of the loading portion 412 is larger than the cross-sectional area of the test piece 100, so that the loading portion 412 can be ensured to apply an axial tensile load to the test piece 100.
Optionally, the connecting portion 411 comprises a second thread section 4111 and a second smooth section 4112, and the loading portion 412 can be provided as a stainless steel plate.
In some embodiments, the driver 42 comprises a nut.
It will be appreciated that the nut can facilitate the operator's tightening in a direction towards the mounting member 32 by a tool such as a torque wrench, and also facilitate the threaded connection with the connecting portion 411.
Optionally, the operator can also use the motor to drive the nut to rotate, and the power source of the nut can be determined according to actual requirements, which is not described herein in detail.
Optionally, the nut is a stainless steel piece.
In some embodiments, the retaining member 34 includes two nuts that abut against the top wall of the mount 32 and the bottom wall of the mount 32, respectively.
It will be appreciated that the two nuts interact to lock the mounting member 32 to the attachment member 33 when the two nuts abut the top and bottom walls of the mounting member 32, respectively. Of course, in other embodiments of the present invention, the driving member 42 can be provided in other structures, which need not be described herein.
Alternatively, the nut can be provided as a stainless steel piece.
In some embodiments, the mounting mechanism 3 and the stress loading mechanism 4 are attached to the test piece 100 by steel-bonded adhesive.
It can be understood that the steel-bonded adhesive has super-strong adhesive force and also has excellent corrosion resistance to erosion media (acid, alkali and salt solutions), so that the stress loading mechanism 4 can apply axial tensile load to the test piece 100 connected with the mounting mechanism 3 and the mechanism.
In some embodiments, the axial tensile testing apparatus of the test piece in the constant temperature corrosion environment further includes two clamping members, the mounting mechanism 3 and the stress loading mechanism 4 are both provided with the clamping members, and the mounting mechanism 3 and the stress loading mechanism 4 are connected with the test piece 100 through the clamping members.
It can be understood that, for the test piece 100 made of a part of materials, the connection of the test piece 100 with the mounting mechanism 3 and the stress loading mechanism 4 through the clamping piece can better reduce the load transmission loss, thereby improving the reliability of the tensile test.
The clamping element can be provided as a clamping jaw.
Example (b):
the following describes an axial tensile test device of a test piece in a constant temperature corrosion environment according to one embodiment of the present invention with reference to fig. 1 to 4.
The axial tensile test device of the test piece in the embodiment under the constant temperature corrosion environment comprises a constant temperature mechanism 1, a corrosion mechanism 2, an installation mechanism 3, a stress loading mechanism 4 and a stress detection mechanism. The thermostatic mechanism 1 is formed with a thermostatic chamber 11, and the temperature of the thermostatic chamber 11 can be set to a preset value. The erosion mechanism 2 is arranged in the thermostatic chamber 11, an erosion groove 21 is formed on the erosion mechanism 2, and an erosion liquid 22 is arranged in the erosion groove 21.
The mounting mechanism 3 is used for fixedly mounting the test piece 100, the mounting mechanism 3 is arranged in the erosion groove 21, and the liquid level of the erosion liquid 22 is higher than the top wall of the test piece 100. Mounting mechanism 3 includes support member 31, mounting member 32, connecting member 33, and retaining member 34. One end of the test piece 100 is connected to the support 31. The mounting member 32 is located above the support member 31. The connecting piece 33 is arranged on the supporting piece 31 and the mounting piece 32 in a penetrating way, and the connecting piece 33 is connected with the supporting piece 31. The locking member 34 is threadedly coupled to the connecting member 33, and the locking member 34 can lock the mounting member 32 at a predetermined height. The retaining member 34 comprises two nuts which abut against the top wall of the mounting member 32 and the bottom wall of the mounting member 32, respectively.
The stress loading mechanism 4 is arranged on the mounting mechanism 3, two ends of the test piece 100 are respectively connected with the mounting mechanism 3 and the stress loading mechanism 4, and the stress loading mechanism 4 can apply a preset axial tensile load on the test piece 100. The stress applying mechanism 4 includes a loading member 41 and a driving member 42. The loading member 41 is inserted into the mounting member 32, and one end of the loading member 41 is connected to the test piece 100. The driving member 42 is sleeved on the loading member 41 and is in threaded connection with the loading member 41, and the driving member 42 can abut against the top wall of the mounting member 32. The loading member 41 comprises a loading part 412 and a connecting part 411, the connecting part 411 is arranged in the mounting part 32 in a penetrating mode and is in threaded connection with the mounting part 32, two ends of the connecting part 411 are respectively connected with the loading part 412 and the test piece 100, and the loading part 412 and the connecting part 411 are integrally formed. The driver 42 comprises a nut.
The stress detection mechanism is provided on the test piece 100, and is capable of detecting stress at different positions of the test piece 100. Stress detection mechanism includes multiunit stress detection subassembly, and multiunit stress detection subassembly sets up along the length direction interval of test piece 100, and every stress detection subassembly of group includes a plurality of stress detection spare 5, is equipped with a stress detection spare 5 on two relative lateral walls that set up of test piece 100 respectively.
The mounting mechanism 3 and the stress loading mechanism 4 are connected with the test piece 100 through steel adhesive.
An axial tensile test method of a test piece in a constant temperature corrosion environment, which adopts the axial tensile test device of the test piece in the constant temperature corrosion environment, comprises the following steps: s1, arranging the erosion liquid 22 in the erosion groove 21, placing the erosion mechanism 2 in the constant temperature mechanism 1, and setting the temperature of the constant temperature cavity 11 to be a preset value; s2, connecting the two ends of the test piece 100 with the support piece 31 and the loading piece 41 respectively, installing a stress detection mechanism on the test piece 100, and locking the installation piece 32 on a preset height by using the locking piece 34; s3, tightening the driver 42 with the tool, and continuing to tighten the driver 42 after the driver 42 abuts against the mounting member 32 to apply a predetermined axial tensile load to the test piece 100; s4, placing the installation mechanism 3 provided with the test piece 100 and the stress loading mechanism 4 in the erosion liquid 22, and enabling the liquid level of the erosion liquid 22 to be higher than the top wall of the test piece 100; and S5, taking out the mounting mechanism 3 and the stress loading mechanism 4 after the time that the test piece 100 is eroded by the erosion liquid 22 reaches the preset time, and taking out and analyzing the parameters of the test piece 100.
It can be understood that, according to the axial tensile test method of the test piece in the constant temperature corrosion environment of the embodiment, due to the adoption of the axial tensile test device of the test piece 100 in the constant temperature corrosion environment, the axial tensile test of the test piece 100 can be performed in different constant temperature environments, different corrosion environments and different axial tensile loads, and the performance analysis of the test piece subjected to the axial tensile test under different conditions is facilitated for an operator, so that the change process of the structural performance of the test piece under the load action and the environmental factor action is determined, the relevant data basis is provided for the durability design of the test piece, and the full life design of the test piece and the reasonable formulation of the maintenance decision scheme are realized.
It should be noted that, in the axial tensile test method of the test piece in the constant temperature corrosion environment of the present embodiment, the sequence of steps S1, S2, and S3 in the practical application process may be replaced according to specific situations, and the method sequence provided in the present embodiment can ensure that the test piece 100 can quickly enter the constant temperature corrosion environment after being subjected to the axial tensile load, and does not need to wait for the constant temperature corrosion environment to be generated, thereby further ensuring the accuracy of the tensile test of the test piece, and reducing the test error.
In the description herein, references to the description of "some embodiments," "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (10)
1. The utility model provides a test piece axial tensile test device under constant temperature erosion environment which characterized in that includes:
the constant temperature mechanism (1) is provided with a constant temperature cavity (11), and the temperature of the constant temperature cavity (11) can be set to be a preset value;
the erosion mechanism (2) is arranged in the constant temperature cavity (11), an erosion groove (21) is formed in the erosion mechanism (2), and erosion liquid (22) is arranged in the erosion groove (21);
the mounting mechanism (3), the mounting mechanism (3) is used for fixedly mounting a test piece (100), the mounting mechanism (3) is arranged in the erosion groove (21), and the liquid level of the erosion liquid (22) is higher than the top wall of the test piece (100);
the stress loading mechanism (4), the stress loading mechanism (4) is arranged on the installation mechanism (3), two ends of the test piece (100) are respectively connected with the installation mechanism (3) and the stress loading mechanism (4), and the stress loading mechanism (4) can apply a preset axial tensile load on the test piece (100);
the stress detection mechanism is arranged on the test piece (100) and can detect the stress on different positions of the test piece (100).
2. The device for testing the axial tension of the test piece in the constant-temperature erosion environment according to claim 1, wherein the stress detection mechanism comprises a plurality of groups of stress detection assemblies, the stress detection assemblies are arranged at intervals along the length direction of the test piece (100), each group of stress detection assemblies comprises a plurality of stress detection pieces (5), and one stress detection piece (5) is respectively arranged on two opposite side walls of the test piece (100).
3. The device for testing the axial tension of a test piece in a constant temperature corrosion environment according to claim 1, wherein the mounting mechanism (3) comprises:
a support (31), one end of the test piece (100) being connected to the support (31);
a mounting (32), the mounting (32) being located above the support (31);
the connecting piece (33) penetrates through the support piece (31) and the mounting piece (32), and the connecting piece (33) is connected with the support piece (31);
a locking member (34), the locking member (34) and the connecting member (33) are in threaded connection, and the locking member (34) can lock the mounting member (32) at a preset height.
4. The device for testing the axial tension of a test piece in a constant temperature corrosion environment according to claim 3, wherein the stress loading mechanism (4) comprises:
a loading piece (41), wherein the loading piece (41) is arranged in the mounting piece (32) in a penetrating way, and one end of the loading piece (41) is connected with the test piece (100);
driving piece (42), driving piece (42) cover establish on loading piece (41) and with loading piece (41) threaded connection, driving piece (42) can the butt be in on the roof of installed part (32).
5. The device for testing the axial tension of the test piece in the constant-temperature corrosion environment according to claim 4, wherein the loading piece (41) comprises a loading part (412) and a connecting part (411), the connecting part (411) is arranged in the mounting piece (32) in a penetrating mode and is in threaded connection with the mounting piece (32), two ends of the connecting part (411) are connected with the loading part (412) and the test piece (100) respectively, and the loading part (412) and the connecting part (411) are integrally formed.
6. The device for testing the axial tension of a test piece in a constant temperature erosion environment according to claim 4, characterized in that the drive member (42) comprises a nut.
7. The device for testing the axial tension of a test piece in a constant-temperature erosion environment according to claim 3, characterized in that the locking member (34) comprises two nuts which abut against the top wall of the mounting member (32) and the bottom wall of the mounting member (32), respectively.
8. The device for testing the axial tension of the test piece in the constant-temperature corrosion environment according to claim 1, wherein the mounting mechanism (3) and the stress loading mechanism (4) are connected with the test piece (100) through steel adhesive.
9. The device for testing the axial tension of the test piece in the constant temperature corrosion environment according to claim 1, wherein the device for testing the axial tension of the test piece in the constant temperature corrosion environment further comprises two clamping pieces, the clamping pieces are arranged on the mounting mechanism (3) and the stress loading mechanism (4), and the mounting mechanism (3) and the stress loading mechanism (4) are connected with the test piece (100) through the clamping pieces.
10. An axial tensile test method of a test piece in a constant temperature corrosion environment, which is characterized in that the axial tensile test device of the test piece in any one of claims 1 to 9 in the constant temperature corrosion environment is adopted, and the axial tensile test device comprises:
s1, arranging the erosion liquid (22) in the erosion groove (21), placing the erosion mechanism (2) in the constant temperature mechanism (1), and setting the temperature of the constant temperature cavity (11) to be a preset value;
s2, connecting two ends of the test piece (100) with the supporting piece (31) and the loading piece (41) respectively, installing the stress detection mechanism on the test piece (100), and locking the installation piece (32) on a preset height by using the locking piece (34);
s3, tightening the driving piece (42) by using a tool, and continuing to tighten the driving piece (42) after the driving piece (42) is abutted on the mounting piece (32) so as to apply the preset axial tensile load to the test piece (100);
s4, placing the mounting mechanism (3) provided with the test piece (100) and the stress loading mechanism (4) in the erosion liquid (22), and enabling the liquid level of the erosion liquid (22) to be higher than the top wall of the test piece (100);
s5, taking out the mounting mechanism (3) and the stress loading mechanism (4) after the time that the test piece (100) is eroded by the eroding fluid (22) reaches the preset time, and taking out and analyzing the parameters of the test piece (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010753054.0A CN111721617A (en) | 2020-07-30 | 2020-07-30 | Axial tensile test device and method for test piece in constant-temperature erosion environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010753054.0A CN111721617A (en) | 2020-07-30 | 2020-07-30 | Axial tensile test device and method for test piece in constant-temperature erosion environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111721617A true CN111721617A (en) | 2020-09-29 |
Family
ID=72574124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010753054.0A Pending CN111721617A (en) | 2020-07-30 | 2020-07-30 | Axial tensile test device and method for test piece in constant-temperature erosion environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111721617A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557290A (en) * | 2020-11-19 | 2021-03-26 | 河北光兴半导体技术有限公司 | Device and method for testing glass thinning rate |
-
2020
- 2020-07-30 CN CN202010753054.0A patent/CN111721617A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557290A (en) * | 2020-11-19 | 2021-03-26 | 河北光兴半导体技术有限公司 | Device and method for testing glass thinning rate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101498649B (en) | Portable metallic material tensile stress etching apparatus and method | |
| CN108548736A (en) | Strain amplitudes dynamic hydrogen embrittlement performance test apparatus and the methods such as a kind of metal material | |
| CN108732035B (en) | High-temperature fretting fatigue life testing method for tenon connection structure | |
| CN111721617A (en) | Axial tensile test device and method for test piece in constant-temperature erosion environment | |
| CN113049407A (en) | Combined loading test device for testing shearing performance of composite material | |
| CN213121355U (en) | Axial tensile test device of test piece under constant temperature erosion environment | |
| CN106950137B (en) | Tangential fretting wear test device and test method | |
| CN111929158B (en) | Device and method capable of monitoring local stress and non-uniform corrosion of welding line | |
| CN205138886U (en) | Down tensile sample card dress device of tensile experiment machine corrosive medium | |
| CN116593146A (en) | Bolt looseness measuring device used under axial loading condition | |
| CN105352792A (en) | Single-bolt double-shear squeezing test device for laminated composite plate | |
| CN203069308U (en) | Sleeve for detecting strength of projection welding nut | |
| CN103344681A (en) | Embedded device for electrochemically detecting or repairing reinforcing bars in concrete | |
| CN116046660A (en) | Test device and method for steel holding force corrosion in salt spray box | |
| CN113358475B (en) | Device and method for testing pulling-out force of dot matrix material bolt hole | |
| CN215767946U (en) | Bolt shear test anchor clamps | |
| CN115326370A (en) | Spring test device and spring test system | |
| CN211504989U (en) | Be used for getting rid of area material cross-section nanometer test fixture that impresses | |
| CN219798967U (en) | Anchor performance detection device | |
| CN215115671U (en) | Supporting material mechanical property testing device | |
| CN215218305U (en) | Blade root bolt test fixture | |
| KR20060016591A (en) | High temperature and high press water loop environmental fatigue test machine | |
| CN214472246U (en) | Low-temperature cracking circulation testing device for coating film or sheet | |
| CN213933361U (en) | Clamping device for deformed steel bar detection | |
| CN218994945U (en) | CT sample opening displacement measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |