CN114235555B - Constant load creep testing device for high-modulus polyethylene rope - Google Patents
Constant load creep testing device for high-modulus polyethylene rope Download PDFInfo
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- CN114235555B CN114235555B CN202111563242.8A CN202111563242A CN114235555B CN 114235555 B CN114235555 B CN 114235555B CN 202111563242 A CN202111563242 A CN 202111563242A CN 114235555 B CN114235555 B CN 114235555B
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- 238000012360 testing method Methods 0.000 title claims abstract description 114
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 title claims abstract description 46
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 claims abstract description 22
- 238000012545 processing Methods 0.000 claims abstract description 20
- 238000005259 measurement Methods 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000033228 biological regulation Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 4
- 229920005594 polymer fiber Polymers 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A high modulus polyethylene rope constant load creep test device belongs to the field of high polymer fiber rope performance detection. The device consists of a loading system for applying a constant load to a creep sample and a creep measurement system for measuring the displacement of two ends of the creep sample; the loading system consists of a double-speed mechanical driving mechanism, a loading mechanism, a load control system and a horizontal rack provided with various bearing mechanisms, and is used for realizing constant load applied to a creep test sample and realizing the function of testing the creep performance of a rope to be tested under the constant load condition; the creep measurement system consists of an image acquisition and processing system, an embedded control system and a touch display screen and is used for measuring the creep elongation and creep rate of a creep sample. Under the test conditions of constant load and constant test length of the test sample, the creep performance of the high-modulus polyethylene rope is measured, and the creep performance model of the high-modulus polyethylene rope with different breaking strength and various linear densities can be established.
Description
Technical Field
The invention belongs to the field of performance detection of high polymer fiber ropes, and particularly relates to a constant load creep test device of a high-modulus polyethylene rope.
Background
The high modulus polyethylene fiber is a third generation high performance fiber appearing after the carbon fiber and the aramid fiber, and the breaking strength of the rope manufactured by the high modulus polyethylene fiber is the highest and is 8 times of that of the steel wire rope; the diameter of the polypropylene rope is the thinnest when the breaking strength is the same, and is 50% of that of the polypropylene rope; the breaking strength is the largest at the same diameter and is 3.8 times of that of the polypropylene rope; the fatigue strength is extremely high, and the strong retention rate of the test after fatigue acceleration is more than 100%.
The high performance of the high modulus polyethylene mooring rope determines the increasing expansion of the application of the mooring rope in an ocean platform anchor rope positioning system, and the high modulus polyethylene mooring rope is developed into one of the key matched high-end equipment for ocean oil and gas resource development.
Creep refers to the phenomenon of plastic deformation that occurs slowly and continuously over time at a certain temperature and constant stress.
The high modulus polyethylene fiber can generate a molecular chain sliding phenomenon, namely irreversible deformation-creep, under the long-term action of constant load due to small molecular chain length and intermolecular acting force, and the phenomenon strongly depends on load, time and temperature. The creep performance of the high modulus polyethylene mooring line is related to the safety of the ocean platform under the condition of long-term operation under constant load. Therefore, when high modulus polyethylene ropes are used as mooring lines for ocean platforms, a corresponding creep performance document model must be built.
At present, the existing creep endurance testing machine is mainly used for measuring creep elongation and creep rupture time of a metal material in a high-temperature environment according to relevant regulations of standards such as GB/T2039 uniaxial tensile creep testing method of the metal material, JJG276 high-temperature creep and endurance strength testing machine and the like. The existing creep endurance tester has the defects that the sample environment temperature is high temperature and the sample length value is small, and the sample environment temperature required by the standard of GB/T8834 'determination of physical and mechanical properties related to ropes' is ambient atmosphere or normal temperature of standard atmosphere, and the effective length of the sample is at least 1800mm, so the tester is not suitable for determining the creep property of a high-modulus polyethylene rope.
The invention discloses a test device and a method for automatically collecting tensile creep, which are applicable to the measurement of high-temperature creep performance of metal materials under different temperatures and tensile loads. The loading system is used for fixing and loading the creep test sample; an environmental heating and temperature control system for heating and controlling the temperature of the surrounding environment of the creep sample; and the automatic data acquisition system is used for acquiring creep signal data of the creep test sample and processing variable signal data. Obviously, the method is to fix the displacement controller in the space below the creep test sample to measure the creep displacement of the lower end surface of the creep test sample and collect the creep displacement signal generated at high temperature. In GB/T8834 test of physical and mechanical properties of ropes, the standard requirements for sample environmental temperature is normal temperature, the elongation of the rope test needs to be loaded with kilonewton level load, and the axial direction of the sample does not have an end face capable of measuring creep displacement, so the technical scheme is not suitable for the measurement of creep properties of high-modulus polyethylene ropes.
The Chinese patent with the authority of CN 103234841B and the authority of 2016-2-10 discloses a method for testing the tensile creep property of ultra-high molecular weight polyethylene fiber, which adopts a fiber tensile testing machine to test the creep elongation of the fiber at normal temperature by taking creep load, tensile speed, creep time and fiber test length as independent variables. In this technical scheme, both ends of a fiber sample are respectively clamped in an upper and a lower clamp, a load is gradually applied at a set tensile speed, a certain creep time is maintained after a creep load is reached from a primary load, and the recorded elongation of the sample is the creep elongation. The creep time of the method is 100min at maximum, which is not in line with the creep performance test of the high modulus polyethylene rope, which requires the creep time in hours. According to the technical scheme, after the tester stops stretching in creep time, the tensile stress born by the fiber is reduced along with the time, although the elongation is unchanged. It is therefore determined the tensile creep elongation of the fiber, not the constant load creep elongation of the fiber.
At present, the existing rope strength tester meeting the standard requirements of GB/T8834 'determination of relevant physical and mechanical properties of ropes' can be used for determining breaking strength, linear density and elongation (the elongation when the load reaches 75% of breaking strength) of the ropes, and the tensile speed is required to enable the loading rate of the load to be 10% of breaking strength per minute. However, this type of testing machine has the following disadvantages: the constant load cannot be applied to the rope due to the large stretching speed, and the tensile stress born by the rope decreases with the time after the stretching is stopped; the displacement shown comprises a deviation in elongation testing caused by the rope sample sliding out of the eye of the plug over a portion of the length. Therefore, the existing rope tensile testing machine does not meet the requirement for testing the constant load creep performance of the high modulus polyethylene rope.
How to accurately measure the constant load creep parameters and the related performances of the high-modulus polyethylene rope is a critical technical problem to be solved in practical measurement work.
Disclosure of Invention
The invention aims to solve the technical problem of providing a creep performance testing device for a high-modulus polyethylene rope with a constant test length and a constant load of a test sample. A double-speed mechanical driving mechanism is adopted to provide two load loading rates; under the test conditions of constant load and constant test length of the test sample, the creep performance of the high-modulus polyethylene rope is measured, and the creep elongation, creep rate and creep curve thereof which are subjected to real-time or test termination can be output by a computer, so that the creep performance models of the high-modulus polyethylene ropes with different breaking strength and various linear densities can be built.
The technical scheme of the invention is as follows: the utility model provides a constant load creep testing arrangement of high modulus polyethylene rope, characterized by:
the device consists of a loading system for applying a constant load to a creep sample and a creep measurement system for measuring the displacement of two ends of the creep sample;
the loading system for applying constant load to the creep test sample consists of a double-speed mechanical driving mechanism with constant speed and low speed, a loading mechanism for applying load to the creep test sample, a load control system and a horizontal rack provided with various mechanisms for bearing the load, and is used for realizing the constant load applied to the creep test sample and the test function of the creep performance of the rope to be tested under the constant load condition;
the double-speed mechanical driving mechanism consists of a speed regulating motor, a gear reduction box with a multi-speed ratio, a large transmission gear, a small transmission gear and a driving nut, and drives a screw rod to reciprocate at a constant speed and a low speed, so that a load applied to a creep sample has a constant speed and a low speed;
the loading mechanism for applying load to the creep sample consists of a screw, a pin for fixing the eye ring of the creep sample, a tension sensor and a connecting piece thereof, and is used for fixing and stretching the creep sample, applying load to the creep sample and measuring a load value;
the load control system consists of a load deviation processor and a motor drive controller and is used for controlling the running or stopping of the motor, the low speed or stopping movement of the screw rod and the low speed or stopping of loading, so that the load applied to the creep test sample fluctuates within the allowable deviation range of a set value, and the creep test sample can carry out the test of the creep performance of the rope under a constant load;
the creep measurement system consists of an image acquisition and processing system, an embedded control system and a touch display screen and is used for measuring the creep elongation and creep rate of a creep sample;
the system comprises two image acquisition and processing systems, wherein each image acquisition and processing system comprises a camera, an image processing module and a video signal acquisition card, which are arranged on one sliding table, 2 cameras respectively track 2 marks at two ends of the middle part of a creep test sample of a rope to drive the sliding table to displace, can measure displacement values at two ends of the test sample, and output the values to an embedded control system;
the embedded control system consists of a power supply, a motor driving system and a displacement measuring system, and can control the sliding table driving motor to drive the sliding table to move left and right, and the elongation obtained by calculating the displacement of the two ends of the measured creep sample is output to the touch display screen;
the creep measurement system is connected with a computer and is used for outputting the creep elongation, the creep rate and the creep curve of the creep test sample in real time or afterwards.
Specifically, two ends of the middle part of the rope creep test sample are respectively and correspondingly provided with a mark, and cameras in each set of image acquisition and processing system are respectively and correspondingly used for tracking the mark arranged at one end or the other end of the middle part of the rope creep test sample, so that a sliding table where the cameras are is driven to carry out corresponding displacement.
Further, the initial spacing between 2 marks in the middle of the cable creep test sample is tracked by the 2 cameras of the image acquisition and processing system, respectively, and is defined as the test length of the test sample.
Preferably, the motor in the mechanical driving mechanism adopts a direct current speed regulating motor.
Specifically, the constant-speed stretching speed comprises the steps of driving a screw rod to reciprocate at the constant-speed stretching speed of 100-200 mm/min through the speed regulation of a motor and the selection of a gear reduction box speed ratio, and applying a constant-speed loading speed of increasing breaking strength by 10% per minute to a creep test sample; the low-speed stretching speed comprises the speed regulation of the motor and the selection of the speed ratio of a gear reduction box, and the screw is driven to reciprocate at the low-speed stretching speed of 10mm/min, so that the creep test sample is applied with the low-speed loading speed of increasing breaking strength by 0.1-1% per minute.
Further, when the load of the creep test sample does not reach a set value or the screw is reset to zero, adopting a constant-speed loading rate for the creep test sample; when the load of the creep test sample reaches the set point, a "low" load rate is applied to the creep test sample.
Specifically, the allowable deviation range of the load set value is 0.1-1% of the set value.
According to the technical scheme, the constant load creep testing device for the high-modulus polyethylene rope adopts the double-speed mechanical driving mechanism to provide two load loading rates, the creep performance of the high-modulus polyethylene rope is measured under the testing conditions of constant load and constant test length of a sample, and the creep elongation, the creep rate and the creep curve of the high-modulus polyethylene rope with different breaking strength and various linear densities can be output by a computer in real time or after test termination, so that the creep performance model of the high-modulus polyethylene rope with different breaking strength and various linear densities can be built.
Compared with the prior art, the invention has the advantages that:
according to the technical scheme, the defects that a constant load cannot be applied to a rope due to high stretching speed, and the displayed displacement comprises the elongation test deviation caused by the fact that a rope sample slides out of a part of length from a plugging eye ring in the prior art are overcome; under the test conditions of constant load and constant test length of the test sample, the creep performance of the high-modulus polyethylene rope is measured, the creep elongation, creep rate and creep curve thereof which are subjected to real-time or test termination can be output by a computer, and the creep performance models of the high-modulus polyethylene ropes with different breaking strength and various linear densities can be built.
Drawings
FIG. 1 is a schematic structural diagram of a high modulus polyethylene rope constant load creep test apparatus of the present invention;
FIG. 2 is a schematic block diagram of a creep determination system according to the present invention.
In the figure, 1 is a control motor, 2 is a gear reduction box, 3 is a small transmission gear, 4 is a large transmission gear, 5 is a driving nut, 6 is a horizontal frame, 7 is a screw, 8 is a tension sensor, 9 is a connecting piece, 10 is a pin, 11 is a creep sample, 12 is a high-precision sliding table, 13 is a high-definition industrial camera, and 14 is a creep sample mark.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The invention relates to a constant load creep test device for a high-modulus polyethylene rope, which mainly comprises a constant load loading system and a creep measurement system for measuring displacement of two ends of a creep test sample (creep test sample or test sample for short) of the rope to be tested, wherein fig. 1 is a structural schematic diagram of the constant load creep test device for the high-modulus polyethylene rope.
The loading system is composed of a mechanical driving mechanism with a constant speed and a low speed, a loading mechanism for applying load to a creep sample, a load control system and a horizontal frame 6 for installing the mechanisms.
The mechanical driving mechanism consists of a motor 1 (preferably a direct current speed regulation motor), a gear reduction box 2 with a multi-speed ratio, a small transmission gear 3, a large transmission gear 4 and a driving nut 5, and can reciprocate at a constant speed of 100-200 mm/min and a low speed of 10mm/min through the speed regulation of the motor 1 and the selection of the speed ratio of the gear reduction box 2, and a driving screw 7 applies a constant speed loading rate of 10% breaking strength per minute and a low speed loading rate of 0.1-1% breaking strength per minute to a creep sample 11.
When the load of the creep test specimen 11 does not reach a set value or the screw 7 is reset, adopting a constant-speed loading rate; the low loading rate is used when the load reaches the set point so that the load can be constant.
The loading mechanism consists of a screw rod 7, a pin 10 for fixing an eye ring of a creep sample 11, a tension sensor 8 and a connecting piece 9 thereof, and is used for fixing and stretching the creep sample, applying load to the creep sample and outputting a load value measured by the tension sensor 8 to a load deviation processor of a load control system.
The load control system consists of a load deviation processor and a motor drive controller and is used for controlling the running or stopping of the motor 1, the low-speed or stopping movement of the screw 7 and the low-speed or stopping loading of the load.
When the load deviation processor finds that the load reaches the set value or is lower than the set value by 0.1-1% (the load can be understood as 99.9-99% of the set value), a signal is sent to the motor drive controller to stop or start the motor 1. This allows the load applied to the creep test specimen 11 to fluctuate within a small deviation range of the set point (not more than 1% of the set point), and the creep test specimen 11 can be subjected to the rope creep performance test under a constant load.
The creep measurement system consists of an image acquisition and processing system, an embedded control system and a touch display screen, and FIG. 2 is a schematic diagram of the modules of the creep measurement system.
As can be seen from fig. 1 and 2, the image acquisition and processing system has 2 sets, each set is composed of a high-definition industrial camera 13, a high-speed image processing module and a video signal acquisition card, which are mounted on a high-precision sliding table 12, the 2 high-definition industrial cameras 13 track creep test sample marks 14 of a rope to be tested respectively and drive the displacement of the sliding table where the cameras are located, and the displacement values of the creep test sample marks at two ends of the test sample can be measured by automatically measuring the distance between corresponding points between the two high-precision sliding tables or the relative distance between the two high-precision sliding tables, and the measured values are output to the embedded control system.
The high-precision sliding table at least comprises a sliding rail, and two high-precision sliding blocks are movably arranged on the sliding rail to form a one-dimensional controllable bidirectional moving module.
Because at least one high-precision sliding block is arranged on one sliding rail, the high-precision sliding block is combined with a singlechip (or a PLC) by adopting a stepping motor under the monitoring of a position detection device (such as a grating type position detection/monitor), and controllable bidirectional movement of the high-precision sliding block is realized, and various commercially available products are available in the prior art, the specific structures and the connection relations among the high-precision sliding table, the high-definition industrial camera, the high-speed image processing module and the video signal acquisition card are not described.
The 2 cameras 13 of the image acquisition and processing system respectively track the initial intervals of 2 creep sample marks 14 as the test length of the sample, and output the values to the embedded control system.
The embedded control system consists of a power supply, a motor driving system and a displacement measuring system, and can control the motor to enable the sliding table to move left and right (the precision is +/-0.02 mm), and the measured displacements of the two ends of the creep test sample are output to the high-definition touch display screen through elongation obtained through calculation.
The creep measurement system is connected with a computer and is used for outputting creep elongation, creep rate and creep curve thereof in real time or afterwards.
According to the technical scheme, two load loading rates (constant speed or low speed) are provided by the double-speed mechanical driving mechanism, so that the test function of the creep performance of the rope under the condition of constant load is realized; fixing and stretching a creep sample through a loading mechanism, applying load to the creep sample, and outputting a load value measured by a tension sensor to a load control system; tracking creep sample marks at two ends of a creep sample of a rope to be measured by adopting an image acquisition and processing system to measure displacement values at two ends of the sample; under the test conditions of constant load and constant test length of the test sample, the creep performance of the high-modulus polyethylene rope is measured, the creep elongation, creep rate and creep curve thereof which are subjected to real-time or test termination can be output by a computer, and the creep performance models of the high-modulus polyethylene ropes with different breaking strength and various linear densities can be built.
The invention can be widely used in the field of creep performance test of high-modulus polyethylene ropes.
Claims (8)
1. A high modulus polyethylene rope constant load creep test device is characterized in that:
the device consists of a loading system for applying a constant load to a creep sample and a creep measurement system for measuring the displacement of two ends of the creep sample;
the loading system for applying constant load to the creep test sample consists of a double-speed mechanical driving mechanism with constant speed and low speed, a loading mechanism for applying load to the creep test sample, a load control system and a horizontal rack provided with various mechanisms for bearing the load, and is used for realizing the constant load applied to the creep test sample and the test function of the creep performance of the rope to be tested under the constant load condition;
the double-speed mechanical driving mechanism consists of a speed regulating motor, a gear reduction box with a multi-speed ratio, a large transmission gear, a small transmission gear and a driving nut, and drives a screw rod to reciprocate at a constant speed and a low speed, so that a load applied to a creep sample has a constant speed and a low speed;
the loading mechanism for applying load to the creep sample consists of a screw, a pin for fixing the eye ring of the creep sample, a tension sensor and a connecting piece thereof, and is used for fixing and stretching the creep sample, applying load to the creep sample and measuring a load value;
the load control system consists of a load deviation processor and a motor drive controller and is used for controlling the running or stopping of the motor, the low speed or stopping movement of the screw rod and the low speed or stopping of loading, so that the load applied to the creep test sample fluctuates within the allowable deviation range of a set value, and the creep test sample can carry out the test of the creep performance of the rope under a constant load;
the creep measurement system consists of an image acquisition and processing system, an embedded control system and a touch display screen and is used for measuring the creep elongation and creep rate of a creep sample;
the system comprises two image acquisition and processing systems, wherein each image acquisition and processing system comprises a camera, an image processing module and a video signal acquisition card, which are arranged on one sliding table, 2 cameras respectively track 2 marks at two ends of the middle part of a creep test sample of a rope to drive the sliding table to displace, can measure displacement values at two ends of the test sample, and output the values to an embedded control system;
the embedded control system consists of a power supply, a motor driving system and a displacement measuring system, and can control the sliding table driving motor to drive the sliding table to move left and right, and the elongation obtained by calculating the displacement of the two ends of the measured creep sample is output to the touch display screen;
the creep measurement system is connected with a computer and is used for outputting the creep elongation, the creep rate and the creep curve of the creep test sample in real time or afterwards.
2. The constant load creep test device for the high-modulus polyethylene rope according to claim 1, wherein two ends of the middle part of the creep test sample of the rope are respectively and correspondingly provided with a mark, and each camera in each set of image acquisition and processing system is respectively and correspondingly used for tracking the mark arranged at one end or the other end of the middle part of the creep test sample of the rope, so that a sliding table where the camera is driven to correspondingly displace.
3. The high modulus polyethylene rope constant load creep test device according to claim 1, wherein the initial spacing between 2 marks in the middle of the creep test sample is defined as the test sample length, which is tracked by the 2 cameras of the image acquisition and processing system, respectively.
4. The high modulus polyethylene rope constant load creep test device according to claim 1, wherein the motor in the mechanical driving mechanism is preferably a dc speed regulating motor.
5. The high modulus polyethylene rope constant load creep test device according to claim 1, wherein the constant speed stretching speed comprises the steps of driving a screw to reciprocate at a constant speed stretching speed of 100-200 mm/min through the speed regulation of the motor and the selection of a gear reduction box speed ratio, and applying a constant speed loading rate of 10% breaking strength increase per minute to a creep sample;
the low-speed stretching speed comprises the speed regulation of the motor and the selection of the speed ratio of a gear reduction box, and the screw is driven to reciprocate at the low-speed stretching speed of 10mm/min, so that the creep test sample is applied with the low-speed loading speed of increasing breaking strength by 0.1-1% per minute.
6. The high modulus polyethylene rope constant load creep test apparatus according to claim 1 or 5, wherein a "constant speed" loading rate is applied to the creep test specimen when the load of the creep test specimen does not reach a set value or the screw is reset to zero; when the load of the creep test sample reaches the set point, a "low" load rate is applied to the creep test sample.
7. The high modulus polyethylene rope constant load creep test device according to claim 1, wherein the allowable deviation range of the load set value is 0.1-1% of the set value.
8. The constant load creep test device for the high-modulus polyethylene rope according to claim 1, wherein the constant load creep test device for the high-modulus polyethylene rope adopts a double-speed mechanical driving mechanism to provide two load loading rates, and under the test conditions of constant load and constant test length of a sample, the creep performance of the high-modulus polyethylene rope is measured, and the creep elongation, the creep rate and the creep curve thereof which are stopped in real time or by the test can be output by a computer, so that the creep performance models of the high-modulus polyethylene ropes with different breaking strength and various linear densities can be built.
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| CN202111563242.8A CN114235555B (en) | 2021-12-20 | 2021-12-20 | Constant load creep testing device for high-modulus polyethylene rope |
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| CN202111563242.8A CN114235555B (en) | 2021-12-20 | 2021-12-20 | Constant load creep testing device for high-modulus polyethylene rope |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234841A (en) * | 2013-05-06 | 2013-08-07 | 上海化工研究院 | Method for testing tensile creep performance of ultra-high molecular weight polyethylene fiber |
| CN103764902A (en) * | 2011-06-24 | 2014-04-30 | 帝人芳纶有限公司 | Parallel ultra-high molecular weight polyethylene rope |
| CN203811481U (en) * | 2014-04-03 | 2014-09-03 | 辽宁石油化工大学 | Constant-stress creep testing machine |
| DE102018002701A1 (en) * | 2018-04-03 | 2019-10-10 | Kultur-, Ingenieur-, und Wissenschafts-Gesellschaft e.V. (KIW-Gesellschaft e.V.) | Creep testing machine for measuring the creep of elastomers |
-
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- 2021-12-20 CN CN202111563242.8A patent/CN114235555B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103764902A (en) * | 2011-06-24 | 2014-04-30 | 帝人芳纶有限公司 | Parallel ultra-high molecular weight polyethylene rope |
| CN103234841A (en) * | 2013-05-06 | 2013-08-07 | 上海化工研究院 | Method for testing tensile creep performance of ultra-high molecular weight polyethylene fiber |
| CN203811481U (en) * | 2014-04-03 | 2014-09-03 | 辽宁石油化工大学 | Constant-stress creep testing machine |
| DE102018002701A1 (en) * | 2018-04-03 | 2019-10-10 | Kultur-, Ingenieur-, und Wissenschafts-Gesellschaft e.V. (KIW-Gesellschaft e.V.) | Creep testing machine for measuring the creep of elastomers |
Non-Patent Citations (1)
| Title |
|---|
| UHMWPE纤维拉伸蠕变性能的测试方法;张玉梅;王新威;王萍;侯秀红;徐静安;;合成纤维工业;20130615(第03期);全文 * |
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