CN108169011B - System and method for detecting coating impact experiment result - Google Patents
System and method for detecting coating impact experiment result Download PDFInfo
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- CN108169011B CN108169011B CN201711352982.0A CN201711352982A CN108169011B CN 108169011 B CN108169011 B CN 108169011B CN 201711352982 A CN201711352982 A CN 201711352982A CN 108169011 B CN108169011 B CN 108169011B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
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- 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
- G01N2203/001—Impulsive
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- 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
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0062—Crack or flaws
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- 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
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
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- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
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Abstract
The invention is suitable for the technical field of impact test detection, and provides a system for detecting the result of a coating impact test, which comprises: the transmitter is arranged in the one-way light-transmitting cover, the outer surface of the one-way light-transmitting cover is provided with a microwave sensor, the one-way light-transmitting cover is arranged in the groove, and the transmitter and the one-way light-transmitting cover are both in communication connection with the server; the emitter sends microwave beams to the periphery based on the trigger signals, sends the sending time of the microwave beams to the server, and the microwave beams are emitted to the side wall of the groove through the one-way light-transmitting cover; the microwave beam reflected by the side wall of the groove is emitted to a microwave sensor on the outer surface of the one-way light-transmitting cover, and the microwave sensor sends the time for sensing the microwave beam to a server; the server estimates the length of the fracture based on the time of transmission and the time of reception of the microwave beam. Whether the coating has cracks after impact is judged based on the sending time and the receiving time of the microwave beam, and the length of the cracks is calculated quantitatively.
Description
Technical Field
The invention belongs to the technical field of impact experiments, and provides a system and a method for detecting a coating impact experiment result.
Background
The coating impact test is a very common test in coating tests, and currently, the evaluation of the results of the coating impact test is still visual evaluation, namely, the results of the test are qualitatively evaluated through two eyes, such as the existence of slight cracks, a small amount of cracks, a large amount of cracks and the like, different experimenters have different understandings of the qualitative evaluation results of the same conclusion, and the improvement of the product impact resistance is very limited in research, development and improvement.
Disclosure of Invention
The embodiment of the invention provides a system for detecting results of a coating impact experiment, and aims to provide a quantitative analysis method for the results of the coating impact experiment.
The invention is realized in this way, a system for detecting the result of a coating impact test, the system comprising:
the transmitter is arranged in the one-way light-transmitting cover, the outer surface of the one-way light-transmitting cover is provided with a microwave sensor, the one-way light-transmitting cover is arranged in the groove, and the transmitter and the one-way light-transmitting cover are both in communication connection with the server;
the emitter sends microwave beams to the periphery based on the trigger signals, sends the sending time of the microwave beams to the server, and the microwave beams are emitted to the side wall of the groove through the one-way light-transmitting cover;
the microwave beam reflected by the side wall of the groove is emitted to a microwave sensor on the outer surface of the one-way light-transmitting cover, and the microwave sensor sends the time for sensing the microwave beam to a server;
the server estimates the length of the fracture based on the time of transmission and the time of reception of the microwave beam, which is the time when the microwave sensor senses the microwave beam.
Further, the server includes:
a time difference calculating unit for calculating the transmission time T of the microwave beam1And a reception time T2Is equal to (T), i.e. Δ T ═ T2-T1(ii) a And
a fracture length calculating unit for calculating the difference value Delta T and the standard difference value Delta T0Target difference value, if Δ T and Δ T0Difference (i.e., Δ T- Δ T)0) If the difference is greater than the preset difference, based on the delta T and the delta T0The fracture length L is estimated according to the difference value of the following formula: (Δ T- Δ T)0) Xc, where c is the propagation velocity of the microwave;
standard deviation value Δ T0＝ΔT1+ΔT2Wherein, Δ T1Time of propagation of the microwave beam from the outer surface of the probe to the sidewalls of the traceless recess, Δ T2The time for a microwave beam traveling through the opposite side of the groove sidewall to travel from the groove sidewall to the outer surface of the detector.
Further, the system comprises:
the amplifier is connected with the microwave detector and the server;
the microwave sensor detects microwave intensity based on the sensed microwave signals and sends the microwave intensity to the amplifier, the amplifier amplifies the microwave signals and sends the amplified microwave signals to the server, and the server displays the microwave signals.
Further, the emitter is spherical, the one-way light-transmitting cover is spherical, and the sphere center of the one-way light-transmitting cover is overlapped with the sphere center of the emitter.
Further, the center of the spherical one-way light-transmitting cover is arranged at the center of the groove.
The embodiment of the invention is realized in such a way that the method for detecting the result of the coating impact experiment comprises the following steps:
s1, the transmitter transmits the microwave beam based on the trigger instruction, records the transmission time of the microwave beam and sends the transmission time to the server;
s2, when the microwave sensor on the outer surface of the one-way light-transmitting cover senses the microwave beam reflected by the side wall of the groove, recording the time of sensing the microwave beam, namely the receiving time of the microwave beam, and sending the receiving time to a server;
s3, the server estimates the fracture length based on the sending time and the receiving time of the microwave beam.
Further, the step S3 specifically includes the following steps:
calculating the transmission time T of the microwave beam1And a reception time T2Is equal to (T), i.e. Δ T ═ T2-T1；
Calculating the difference value Delta T and the standard difference value Delta T0Target difference value, if Δ T and Δ T0Is greater than a predetermined difference, based on Δ T and Δ T0The fracture length L is estimated according to the difference value of the following formula: (Δ T- Δ T)0) Xc, where c is the propagation velocity of the microwave;
standard deviation value Δ T0＝ΔT1+ΔT2Wherein, Δ T1Time of propagation of the microwave beam from the outer surface of the probe to the sidewalls of the traceless recess, Δ T2The time for a microwave beam traveling through the opposite side of the groove sidewall to travel from the groove sidewall to the outer surface of the detector.
The embodiment of the invention judges whether the coating has cracks after being impacted based on the sending time and the receiving time of the microwave beam, quantitatively calculates the length of the cracks, and estimates the length of the cracks to provide data support for the research on the impact resistance of the coating so as to guide the production and research and development work of the impact resistance of the coating.
Drawings
Fig. 1 is a schematic structural diagram of a system for detecting results of a coating impact test provided in an embodiment of the present invention.
1. The device comprises a groove, 2 parts of a one-way light-transmitting cover, 3 parts of an emitter, 4 parts of a server and 5 parts of an amplifier.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 is a schematic structural diagram of a system for detecting results of a coating impact test according to an embodiment of the present invention, and for convenience of description, only a part related to the embodiment of the present invention is shown.
The system comprises: the microwave emitter comprises an emitter 3 and a one-way light-transmitting cover 2, wherein the emitter 2 is arranged in the one-way light-transmitting cover 3, a microwave sensor (not shown in the figure) is arranged on the outer surface of the one-way light-transmitting cover 3, the one-way light-transmitting cover 3 is arranged in a groove 1, the groove 1 is a dent left at an impact position when a coating is subjected to an impact experiment, the emitter 3 and the one-way light-transmitting cover 2 are both in communication connection with a server 4, in the embodiment of the invention, the emitter 3 is spherical, the one-way light-transmitting cover 3 is also spherical, the spherical center of the one-way light-transmitting cover 2 is overlapped with the spherical center of the emitter 3, the center of the spherical one-way light-transmitting cover 2 is placed at the center of the groove 1 as far as possible, so that the emitted microwave beams are equal as possible.
The emitter 3 sends microwave beams to the periphery based on the trigger signal, sends the sending time of the microwave beams to the server 4, the microwave beams are emitted to the side wall of the groove 1 through the one-way light-transmitting cover 2, the microwave beams reflected by the side wall of the groove 1 are emitted to the microwave sensor on the outer surface of the one-way light-transmitting cover 2, the microwave sensor sends the time for sensing the microwave beams (namely the receiving time of the microwave beams) to the server 4, and the server 4 estimates the length of the cracks based on the sending time and the receiving time of the microwave beams.
In an embodiment of the present invention, a server includes:
a time difference calculating unit for calculating the transmission time T of the microwave beam1And a reception time T2Is equal to (T), i.e. Δ T ═ T2-T1(ii) a And
a fracture length calculating unit for calculating the difference value Delta T and the standard difference value Delta T0Target difference value, if Δ T and Δ T0Difference (i.e., Δ T- Δ T)0) If the difference is greater than the preset difference, based on the delta T and the delta T0The length L of the crack is estimated by the difference value of: (Δ T- Δ T)0) X c, where c is the propagation velocity of the microwave, if Δ T and Δ T0Difference (i.e., Δ T- Δ T)0) And if the difference value is less than or equal to the preset difference value, the time difference caused by the unequal distance between the outer surface of the one-way light-transmitting cover and the side wall of the groove and the distance between the surface of the detector and the side wall of the groove is considered to be irrelevant to the crack.
Standard deviation value Δ T0＝ΔT1+ΔT2Wherein, Δ T1Time of propagation of the microwave beam from the outer surface of the probe to the sidewalls of the traceless recess, Δ T2The time for a microwave beam traveling through the opposite side of the groove sidewall to travel from the groove sidewall to the outer surface of the detector.
The embodiment of the invention judges whether the coating has cracks after being impacted based on the sending time and the receiving time of the microwave beam, quantitatively calculates the length of the cracks, and estimates the length of the cracks to provide data support for the research on the impact resistance of the coating so as to guide the production and research and development work of the impact resistance of the coating.
In an embodiment of the present invention, the system further includes: the amplifier 5, this amplifier 5 is connected with microwave detector and server 4, the microwave sensor detects microwave intensity based on the microwave signal that senses, and send microwave intensity to the amplifier 5, the amplifier 5 is carried out the amplification processing to microwave signal, and send the microwave signal after the amplification to server 4, server 4 shows microwave signal, so that the staff carries out digital representation to the length of fracture, width and the quantity of fracture based on microwave signal's intensity, the parameter and the sample number of this kind of representation simultaneously, information such as date of detection are stored in the server database, be convenient for later stage call, contrast.
In the embodiment of the invention, the method for detecting the result of the coating impact experiment based on the system for detecting the result of the coating impact experiment comprises the following steps:
s1, the transmitter transmits the microwave beam based on the trigger instruction, records the transmission time of the microwave beam and sends the transmission time to the server;
s2, when the microwave sensor on the outer surface of the one-way light-transmitting cover senses the microwave beam reflected by the side wall of the groove, recording the time of sensing the microwave beam, namely the receiving time of the microwave beam, and sending the receiving time to a server;
s3, the server estimates the fracture length based on the sending time and the receiving time of the microwave beam.
In the embodiment of the present invention, step S3 specifically includes the following steps:
calculating the transmission time T of the microwave beam1And a reception time T2Is equal to (T), i.e. Δ T ═ T2-T1；
Calculating the difference value Delta T and the standard difference value Delta T0Target difference value, if Δ T and Δ T0Is greater than a predetermined difference, based on Δ T and Δ T0The fracture length L is estimated according to the difference value of the following formula: (Δ T- Δ T)0) Xc, where c is the propagation velocity of the microwave;
standard deviation value Δ T0＝ΔT1+ΔT2Wherein, Δ T1Time of propagation of the microwave beam from the outer surface of the probe to the sidewalls of the traceless recess, Δ T2The time for a microwave beam traveling through the opposite side of the groove sidewall to travel from the groove sidewall to the outer surface of the detector.
The embodiment of the invention judges whether the coating has cracks after being impacted based on the sending time and the receiving time of the microwave beam, quantitatively calculates the length of the cracks, and estimates the length of the cracks to provide data support for the research on the impact resistance of the coating so as to guide the production and research and development work of the impact resistance of the coating.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. A system for detecting results of a coating impact test, the system comprising:
the transmitter is arranged in the one-way light-transmitting cover, the outer surface of the one-way light-transmitting cover is provided with a microwave sensor, the one-way light-transmitting cover is arranged in the groove, and the transmitter and the one-way light-transmitting cover are both in communication connection with the server;
the emitter sends microwave beams to the periphery based on the trigger signals, sends the sending time of the microwave beams to the server, and the microwave beams are emitted to the side wall of the groove through the one-way light-transmitting cover;
the microwave beam reflected by the side wall of the groove is emitted to a microwave sensor on the outer surface of the one-way light-transmitting cover, and the microwave sensor sends the time for sensing the microwave beam to a server;
the server estimates the length of the crack based on the sending time and the receiving time of the microwave beam, wherein the receiving time of the microwave beam is the time when the microwave sensor senses the microwave beam;
the emitter is spherical, the one-way light-transmitting cover is spherical, the sphere center of the one-way light-transmitting cover is overlapped with the sphere center of the emitter, and the center of the spherical one-way light-transmitting cover is arranged at the center of the groove;
the server includes:
a time difference calculating unit for calculating the transmission time T of the microwave beam1And a reception time T2Is equal to (T), i.e. Δ T ═ T2-T1；
A fracture length calculating unit for calculating the difference value Delta T and the standard difference value Delta T0If Δ T is different from Δ T0Is greater than a predetermined difference, based on Δ T and Δ T0The fracture length L is estimated according to the difference value of the following formula: (Δ T- Δ T)0) Xc, where c is the propagation velocity of the microwave;
standard deviation value Δ T0＝ΔT1+ΔT2Wherein, Δ T1Time of propagation of the microwave beam from the emitter outer surface to the traceless groove sidewall, Δ T2For microwave beams reflected from the side walls of the grooveThe time the sidewall travels to the outer surface of the microwave sensor.
2. The system for testing results of a coating impact test of claim 1, wherein the system comprises:
the amplifier is connected with the microwave sensor and the server;
the microwave sensor detects microwave intensity based on the sensed microwave signals and sends the microwave intensity to the amplifier, the amplifier amplifies the microwave signals and sends the amplified microwave signals to the server, and the server displays the microwave signals.
3. A method for testing based on the system for testing the result of coating impact test as claimed in any one of claims 1 to 2, wherein the method comprises the following steps:
s1, the transmitter transmits the microwave beam based on the trigger instruction, records the transmission time of the microwave beam and sends the transmission time to the server;
s2, when the microwave sensor on the outer surface of the one-way light-transmitting cover senses the microwave beam reflected by the side wall of the groove, recording the time of sensing the microwave beam, namely the receiving time of the microwave beam, and sending the receiving time to a server;
s3, the server estimates the fracture length based on the sending time and the receiving time of the microwave beam;
the step S3 specifically includes the following steps:
calculating the transmission time T of the microwave beam1And a reception time T2Is equal to (T), i.e. Δ T ═ T2-T1；
Calculating the difference value Delta T and the standard difference value Delta T0If Δ T is different from Δ T0Is greater than a predetermined difference, based on Δ T and Δ T0The fracture length L is estimated according to the difference value of the following formula: (Δ T- Δ T)0) Xc, where c is the propagation velocity of the microwave;
standard deviation value Δ T0＝ΔT1+ΔT2Wherein, Δ T1Time of propagation of the microwave beam from the emitter outer surface to the traceless groove sidewall, Δ T2Is the time for the microwave beam reflected by the groove sidewall to travel from the groove sidewall to the outer surface of the microwave sensor.
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