CN110926928A - Automatic remote alarm device for constant-load tensile test - Google Patents

Automatic remote alarm device for constant-load tensile test Download PDF

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Publication number
CN110926928A
CN110926928A CN201911242414.4A CN201911242414A CN110926928A CN 110926928 A CN110926928 A CN 110926928A CN 201911242414 A CN201911242414 A CN 201911242414A CN 110926928 A CN110926928 A CN 110926928A
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China
Prior art keywords
alarm
weight
sample
detection sensor
lever arm
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CN201911242414.4A
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惠卫军
赵晓丽
张永健
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Beijing Jiaotong University
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Beijing Jiaotong University
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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
    • 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
    • G01N3/04—Chucks
    • 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

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
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  • 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 provides an automatic remote alarm device for a constant-load tensile test. The device includes: the device comprises a detection sensor, a weight base, a weight, a lever arm, a sample and an alarm; clamping a sample at one end of a lever arm, connecting a weight at the other end of the lever arm, arranging a detection sensor on a weight base, and connecting the detection sensor with an alarm; at the beginning of the experiment, the lever arm is in horizontal position, and the weight is located the higher authority of weight base, and the record experiment begins the time, and in the experimentation, the sample receives the loaded stress action of the tensile experimental facilities of constant load, and the sample is broken, and the lever arm is connected the one end of weight descends, and on the weight base was fallen to the weight, the detection sensor detected the weight, and the detection sensor sends alarm signal to the alarm, and the alarm sends alarm information. The invention can record the time from the beginning to the end of the experiment, can remotely alarm to experimenters after the sample is broken, and can monitor the experiment without manual watching.

Description

Automatic remote alarm device for constant-load tensile test
Technical Field
The invention relates to the technical field of constant-load tensile tests, in particular to an automatic remote alarm device for a constant-load tensile test.
Background
Under the action of static stress, a delayed fracture phenomenon of sudden brittle failure often occurs in a steel material after a certain time, and the delayed fracture phenomenon is a form of hydrogen-induced material deterioration. The occurrence of delayed fracture is mainly caused by hydrogen (external hydrogen) intruded from the external environment (long-term exposure to humid air, rain water, and the like) and hydrogen (internal hydrogen) intruded into steel in the manufacturing process of pickling, plating, and the like.
The delayed fracture resistance of the materials was evaluated in the laboratory, and relative evaluation was often performed using an accelerated test. A common test method is a constant load delayed fracture test, which usually uses a smooth or notched round bar or flat plate sample immersed in WOL corrosion inhibitor (hydrochloric acid + sodium acetate + deionized water or distilled water) with a pH of 3.5 ± 0.5 to perform stretching under a constant load, and the delayed fracture resistance of the test material is evaluated by testing the time t for the material to fracture and observing the tensile fracture of the sample. The constant load delayed fracture test is usually carried out by using a constant load tensile testing machine.
At present, there are patents related to constant load tensile test devices, such as patent application No. 200910092652.1 patent invention and patent application No. 201510127403.7 patent invention, and the like, the basic structure of these devices is that a lever principle is used to apply a constant load to a sample, and in order to record the time from the start of loading the sample to fracture, an automatic timing device for the constant load tensile test device with patent No. 201410085235.5 has been invented, but there is no automatic remote alarm device mentioned in the patent, and when a corrosion test is performed, if the sample is soaked in a corrosion liquid for a long time after being fractured, corrosion occurs, the fracture cannot be observed, and the evaluation of the test result is seriously affected, so the test time recording device cannot meet the test requirements, and an experimenter needs to perform manual attendance. The constant load delayed fracture test period is long, a large number of experiments are needed when delayed fracture performance evaluation is carried out on different process materials, and manpower and material resources are consumed by manual attendance.
In view of the above, it is necessary to develop a convenient and reliable remote alarm system for constant-load tensile test.
Disclosure of Invention
The embodiment of the invention provides an automatic remote alarm device for a constant-load tensile test, which is used for automatically monitoring the constant-load tensile test.
In order to achieve the purpose, the invention adopts the following technical scheme.
An automatic remote alarm device for constant load tensile testing, comprising: the device comprises a detection sensor, a weight base, a weight, a lever arm, a sample and an alarm;
clamping the sample at one end of the lever arm, connecting the weight at the other end of the lever arm, arranging the detection sensor on a weight base, and connecting the detection sensor with the alarm in a wired manner;
when the experiment begins, the lever arm is in horizontal position, the weight is located the higher authority of weight base, record experiment start time, in the experimentation, the sample receives the tensile experimental facilities loaded stress action of constant load, the sample is broken, the lever arm is fixed the one end of sample rises, the lever arm is connected the one end of weight descends, the weight falls on the weight base, the detection sensor detects the weight, the detection sensor to alarm sending alarm signal, alarm information is sent out to the alarm.
Preferably, the apparatus further comprises: the sample is placed in the corrosive liquid vessel, and the corrosive liquid vessel is fixed on the clamp.
Preferably, the number of the mobile phone of the user is stored in the alarm, after the alarm receives the alarm signal, the alarm transmits alarm information to the mobile phone of the user to remind the user to unload the sample, and the time of sending the alarm information by the alarm minus the test starting time is used as the test experience time.
Preferably, the alarm is connected with a plurality of detection sensors and is used for monitoring a plurality of constant-load tensile experimental devices.
Preferably, the detection sensor is fixed on the weight base, and its upper end and weight base keep the level, the detection sensor passes through proximity switch and realizes, the detection sensor is wired to be connected with the alarm, and when the weight fell on the weight base, the detection sensor sensed pressure signal, sent alarm signal for the alarm.
Preferably, the minimum cross-sectional area of the sample is S, and the tensile strength of the sample is RmThe loading stress of the constant load tensile experimental equipment is 0.8RmAnd the lever ratio of the lever arm is 1: V, the weight W of the weight is 0.8Rm×S÷9.8÷V。
According to the technical scheme provided by the embodiment of the invention, the device provided by the embodiment of the invention is suitable for constant-load tensile experiment equipment for testing the delayed fracture performance of the material, not only can record the time from the beginning to the end of an experiment, but also can remotely alarm to an experimenter after a sample is fractured, the experiment can be monitored without manual watching, and one alarm can be connected with a plurality of detection sensors, so that a plurality of pieces of constant-load tensile experiment equipment can be monitored simultaneously.
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
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an automatic remote alarm device for a constant-load tensile test according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a constant-load tensile experimental apparatus provided in an embodiment of the present invention after a sample is clamped;
fig. 3 is a schematic diagram of a constant-load tensile experimental apparatus after a sample breaks, according to an embodiment of the present invention.
In the figure, 1 is a detection sensor, 2 is a weight base, 3 is a weight, 4 is a lever arm, 5 is a sample, 6 is an alarm, 7 is a remote controller, 8 is a mobile phone, a corrosion liquid vessel 9 and a clamp 10.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.
The embodiment of the invention provides a convenient and reliable automatic remote alarm device for constant-load tensile test equipment.
The structural schematic diagram of the automatic remote alarm device for the constant-load tensile test provided by the embodiment of the invention is shown in fig. 1, and the device comprises: the device comprises a detection sensor 1, a weight base 2, a weight 3, a lever arm 4, a sample 5, an alarm 6, a remote controller 7, a mobile phone 8, a corrosive liquid vessel 9 and a clamp 10.
The automatic remote alarm device of the constant-load tensile experimental equipment is used in combination with the constant-load tensile experimental equipment, the schematic diagram of the constant-load tensile experimental equipment provided by the embodiment of the invention after a sample is clamped is shown in fig. 2, and the schematic diagram of the constant-load tensile experimental equipment after the sample is broken is shown in fig. 3.
The operation steps of the automatic remote alarm device of the constant-load tensile experimental equipment comprise:
(1) the number of the user's handset 8 is stored in the alarm 6. A mobile phone 8 can be used for calling the alarm 6, the operation is carried out according to the voice prompt, and the mobile phone number of the mobile phone is input;
(1) the sample 5 is loaded into the etching solution vessel 9, and the etching solution vessel 9 is fixed to the jig 10. A test sample 5 is clamped at one end of the lever arm 4, and the test sample 5 can be soaked in a corrosive solution or tested in air according to the experimental requirement. At the other end of the lever arm 4 a weight 3 is attached. The detection sensor 1 is connected with the alarm 7 in a wired or wireless way.
The radius of the cross section of the cylindrical sample 5 is d, and the minimum cross-sectional area of the sample 5 is S ═ d (pi d)2) (ii)/4, the tensile strength of the sample 5 is R measured by a universal tensile testermAnd the loading stress of the constant-load tensile experimental equipment is 0.8RmAnd the lever ratio of the lever arm is set to be 1: V, the weight W of the weight is 0.8Rm multiplied by S divided by 9.8 divided by V.
Load the weight 3 of corresponding weight, make the weight 3 leave weight base 2 after the loading, transfer lever arm 4 to the level after press remote controller 7 immediately "cloth of preventing" button, carry out initialization setting to alarm 6 with remote controller 7, for example, call for alarm 6 with cell-phone 8, input password: 1234#, input "31 + mobile phone number" and hang up according to # again.
Record experiment start time, at the experiment when beginning, lever arm 4 is in horizontal position, and detection sensor 1 sets up on weight base 2, and weight 3 is located the higher authority certain distance of weight base 2, and detection sensor 1 does not detect weight 3.
The detection sensor is fixed on the weight base, the upper end of the detection sensor is horizontal with the weight base, the detection sensor can be realized through a proximity switch, the detection sensor is connected with the alarm in a wired mode, when the weight falls onto the weight base, the detection sensor senses a pressure signal and sends an alarm signal to the alarm, and the alarm gives an alarm.
(3) In the experimental process, the sample 5 is subjected to the stress loaded by the constant-load tensile experimental equipment, and at the moment, the experimenter can leave the laboratory for other work.
In the experiment is gone on, when sample 5 is broken, the one end that constant load tensile experimental apparatus's lever arm 4 fixed sample 5 rises, and lever arm 4 connects the one end decline of weight 3, and on weight 3 fell to weight base 2, detection sensor 1 detected weight 3, and detection sensor 1 sends alarm signal to alarm 7, and alarm 7 sends audio alert to make a call or send information for cell-phone 8.
(4) After receiving the alarm call or information, the mobile phone 8 of the experimenter enters the laboratory to unload the sample 3. The experimenter uses the remote controller to send an alarm stopping instruction to the alarm 7, and sets 'disarming', so that the alarm 6 stops alarming.
And subtracting the test starting time from the time of sending alarm information by the alarm to obtain the test experience time, immediately unloading the test sample 5 in order to prevent the fracture from rusting, washing the fracture by acetone or alcohol, drying and putting the fracture into a drying tank for storage.
In summary, the device provided by the embodiment of the invention is suitable for constant-load tensile experimental equipment for testing delayed fracture performance of materials, can record the time from the beginning to the end of an experiment, can remotely alarm to an experimenter after a sample is fractured, can monitor the experiment without manual watching, and can monitor a plurality of constant-load tensile experimental equipment by connecting one alarm with a plurality of detection sensors.
Compared with the traditional constant load test equipment which needs the experimenter to watch day and night, the device provided by the embodiment of the invention can well solve the problems of time recording and timely monitoring of the experiment in the delayed fracture experiment, and one alarm can be connected with a plurality of detection sensors, so that the function of simultaneously monitoring a plurality of constant load tensile testing machines is realized. The device has the advantages of accurate detection, good stability and low cost, and can greatly improve the working efficiency.
The device provided by the embodiment of the invention is simple to install, easy to operate, stable and reliable in operation, capable of saving manpower and material resources and greatly improving the experimental efficiency.
Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (6)

1. An automatic remote alarm device for a constant-load tensile test is characterized by comprising: the device comprises a detection sensor, a weight base, a weight, a lever arm, a sample and an alarm;
clamping the sample at one end of the lever arm, connecting the weight at the other end of the lever arm, arranging the detection sensor on a weight base, and connecting the detection sensor with the alarm in a wired manner;
when the experiment begins, the lever arm is in horizontal position, the weight is located the higher authority of weight base, record experiment start time, in the experimentation, the sample receives the tensile experimental facilities loaded stress action of constant load, the sample is broken, the lever arm is fixed the one end of sample rises, the lever arm is connected the one end of weight descends, the weight falls on the weight base, the detection sensor detects the weight, the detection sensor to alarm sending alarm signal, alarm information is sent out to the alarm.
2. The apparatus of claim 1, further comprising: the sample is placed in the corrosive liquid vessel, and the corrosive liquid vessel is fixed on the clamp.
3. The device according to claim 1, characterized in that the number of the mobile phone of the user is stored in the alarm, after the alarm receives the alarm signal, the alarm transmits alarm information to the mobile phone of the user to remind the user to unload the sample, and the experiment elapsed time is obtained by subtracting the experiment starting time from the time when the alarm sends the alarm information.
4. The device of claim 1, wherein the alarm is connected to a plurality of detection sensors and monitors a plurality of constant load tensile test apparatuses simultaneously.
5. The device according to claim 1, characterized in that the detection sensor is fixed on the weight base, the upper end of the detection sensor is kept horizontal with the weight base, the detection sensor is realized by a proximity switch, the detection sensor is connected with an alarm in a wired mode, and when the weight falls on the weight base, the detection sensor senses a pressure signal and sends an alarm signal to the alarm.
6. The apparatus according to any one of claims 1 to 5, wherein the minimum cross-sectional area of the sample is S, and the tensile strength of the sample is RmThe loading stress of the constant load tensile experimental equipment is 0.8RmAnd the lever ratio of the lever arm is 1: V, the weight W of the weight is 0.8Rm×S÷9.8÷V。
CN201911242414.4A 2019-12-06 2019-12-06 Automatic remote alarm device for constant-load tensile test Pending CN110926928A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114112649A (en) * 2021-12-24 2022-03-01 华北电力大学（保定） Pure mechanical transverse load stress testing machine
CN114295509A (en) * 2021-12-31 2022-04-08 江苏天鼎检测科技有限公司 Constant-load corrosion test device

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CN103105354A (en) * 2012-12-11 2013-05-15 龙口市丛林铝材有限公司 Rapid test sample tensile stress corrosion tester
CN103822825A (en) * 2014-03-10 2014-05-28 北京科技大学 Automatic timing device for constant load tensile testing equipment
CN204594505U (en) * 2015-05-22 2015-08-26 淮阴工学院 The unmanned temperature and humidity in storeroom remote monitoring device that band warning is enable
CN107560976A (en) * 2017-08-30 2018-01-09 陈霁阳 A kind of ash particle device for measuring viscosity
CN109827897A (en) * 2019-03-13 2019-05-31 南京工程学院 A kind of slow tensile stress etching experimental provision based on lever

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102519800A (en) * 2011-11-18 2012-06-27 中国航空工业集团公司北京航空材料研究院 Mechanical creep and permanent strength testing machine
CN103105354A (en) * 2012-12-11 2013-05-15 龙口市丛林铝材有限公司 Rapid test sample tensile stress corrosion tester
CN103822825A (en) * 2014-03-10 2014-05-28 北京科技大学 Automatic timing device for constant load tensile testing equipment
CN204594505U (en) * 2015-05-22 2015-08-26 淮阴工学院 The unmanned temperature and humidity in storeroom remote monitoring device that band warning is enable
CN107560976A (en) * 2017-08-30 2018-01-09 陈霁阳 A kind of ash particle device for measuring viscosity
CN109827897A (en) * 2019-03-13 2019-05-31 南京工程学院 A kind of slow tensile stress etching experimental provision based on lever

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114112649A (en) * 2021-12-24 2022-03-01 华北电力大学（保定） Pure mechanical transverse load stress testing machine
CN114295509A (en) * 2021-12-31 2022-04-08 江苏天鼎检测科技有限公司 Constant-load corrosion test device

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