CN113324863A - Rapid nondestructive testing method for surface wave construction quality of building construction - Google Patents
Rapid nondestructive testing method for surface wave construction quality of building construction Download PDFInfo
- Publication number
- CN113324863A CN113324863A CN202110718785.6A CN202110718785A CN113324863A CN 113324863 A CN113324863 A CN 113324863A CN 202110718785 A CN202110718785 A CN 202110718785A CN 113324863 A CN113324863 A CN 113324863A
- Authority
- CN
- China
- Prior art keywords
- concrete
- ultrasonic
- detection
- rebound
- building
- 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
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/043—Analysing solids in the interior, e.g. by shear waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
-
- 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
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/52—Investigating hardness or rebound hardness by measuring extent of rebound of a striking body
-
- 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
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0035—Spring
-
- 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
-
- 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
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0083—Rebound strike or reflected energy
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/011—Velocity or travel time
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0232—Glass, ceramics, concrete or stone
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/042—Wave modes
- G01N2291/0423—Surface waves, e.g. Rayleigh waves, Love waves
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)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a rapid nondestructive testing method for surface wave construction quality of building construction, relates to the technical field of building construction, and solves the problems that only surface hardness parameters can be obtained by adopting nondestructive testing in the existing building quality testing process, and destructive testing is inconvenient for keeping the integrity of a concrete surface. A rapid nondestructive testing method for the construction quality of surface wave in building construction comprises the following steps: step A: cleaning the surface of a building to be detected, detecting the hardness and humidity of the concrete surface in advance, and controlling the temperature to be in a room temperature environment; positioning detection points in an area to be detected to ensure that the distribution of a plurality of detection points is in a uniform grid shape; and B: and repeatedly detecting the detection points by a rebound method. The invention can realize nondestructive detection and is convenient for detecting cracks in the structure by carrying out combined detection on the construction quality of the building, and is convenient to use.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a rapid nondestructive testing method for the construction quality of surface waves of building construction.
Background
With the rapid development of social economy, everywhere visible concrete becomes an indispensable article in our lives, and currently, concrete is widely applied to modern civil engineering as an important building preferred material, the performance and construction quality of the concrete have direct influence on the safety of concrete structural engineering and even building engineering, so that the strength should be increased to detect and control the quality of the concrete, and the nondestructive detection operation can effectively maintain the integrity of the structural surface when the quality of the constructed concrete is detected.
However, in the existing building quality detection process, only surface hardness parameters can be obtained by adopting nondestructive detection, and the integrity of the concrete surface is not conveniently maintained by adopting destructive detection; therefore, the existing requirements are not met, and a rapid nondestructive testing method for the surface wave construction quality of the building construction is provided.
Disclosure of Invention
The invention aims to provide a rapid nondestructive testing method for the surface wave construction quality of building construction, which aims to solve the problems that only surface hardness parameters can be obtained by adopting nondestructive testing in the existing building quality testing process, the destructive testing is inconvenient to keep the integrity of the concrete surface and the like in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a rapid nondestructive testing method for the construction quality of surface wave in building construction comprises the following steps:
step A: cleaning the surface of a building to be detected, detecting the hardness and humidity of the concrete surface in advance, and controlling the temperature to be in a room temperature environment; positioning detection points in an area to be detected to ensure that the distribution of a plurality of detection points is in a uniform grid shape;
and B: repeatedly detecting the detection points by a rebound method, and determining the compressive strength of the concrete surface by measuring the hardness of the concrete surface; a weight with standard mass is adopted to impact a force rod which is in contact with the surface of the concrete under the driving of a standard spring, the weight of the weight rebounds for a distance due to the influence of elasticity in the process, and a rebound value N is indicated on a scale after a sliding indicator is driven; then, the rebound value is taken as an index related to the strength, and the actual strength value of the concrete can be obtained according to the rebound value N through a pre-established relation curve of the strength and the rebound value of the concrete, so that the surface strength of the concrete can be subjected to nondestructive testing;
and C: when the internal structural integrity and the quality of the concrete are detected, an ultrasonic method can be adopted for detection, simulated assembly is carried out in a laboratory according to the material and the strength of a building to be detected, similar construction is carried out according to the proportioning ratio and the thickness of the concrete, the accuracy of a detection result is ensured, and an ultrasonic generator is adopted for detecting a simulated sample;
step D: the ultrasonic method is a method for estimating the strength of concrete by measuring the average sound velocity of ultrasonic propagation, a power supply is switched on, ultrasonic waves generated by an ultrasonic generator are used for detecting a sample, pulses generated by the ultrasonic waves are transmitted into a transducer, high-frequency sound pulses are generated by a piezoelectric crystal, and the relation between the ultrasonic sound velocity and the compressive strength of the concrete is described by establishing a relevant statistical measurement strength curve, so that the relevant detection and evaluation of the mechanical property of the concrete are realized;
step E: carrying out ultrasonic rebound operation on the basis of an ultrasonic detection method, reducing detection requirements and measuring errors, placing a transmitting transducer in a region to be detected, and switching on a power supply to repeatedly detect latticed detection points through the transmitting transducer;
step F: the transmitting transducer can repeatedly transmit ultrasonic pulses during detection, so that ultrasonic waves can be transmitted in concrete to be detected, the receiving transducer is used for converting the received ultrasonic waves into electric signals to be recorded and transmitted, the electric signals can be displayed in real time through an oscilloscope, and finally, the ultrasonic instrument is used for directly measuring acoustic parameters, so that nondestructive detection is realized.
Preferably, the rebound value in step B is a ratio of the rebound distance to the initial length of the spring.
Preferably, the model of the ultrasonic generator in the step C is USM-33.
Preferably, the detecting instrument of the rebound method in the step B is a digital display rebound instrument.
Preferably, the ultrasonic sound velocity in the step D is in negative correlation with the concrete compressive strength.
Preferably, the oscilloscope in the step F displays the crack depth through wave height.
Preferably, the amount of the ultrasonic wave received by the ultrasonic rebound in the step E is a reflectivity, and the real-time reflectivity is 30mm at the maximum.
Preferably, the height of the detection point in the step A is kept consistent.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, by performing combined detection on the construction quality of the building and adopting an ultrasonic springback detection method, the surface and the interior of the concrete can be simultaneously detected, so that nondestructive detection can be realized, cracks in the structure can be conveniently detected, the use is convenient, and the detection result is more accurate.
Drawings
FIG. 1 is a schematic flow diagram of the present invention as a whole;
FIG. 2 is a schematic flow chart of an ultrasonic rebound detection method of the present invention;
FIG. 3 is a graph illustrating the reflectivity of ultrasonic waves according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1 to 3, an embodiment of the present invention includes: a rapid nondestructive testing method for the construction quality of surface wave in building construction comprises the following steps:
step A: cleaning the surface of a building to be detected, detecting the hardness and humidity of the concrete surface in advance, and controlling the temperature to be in a room temperature environment; positioning detection points in an area to be detected to ensure that the distribution of a plurality of detection points is in a uniform grid shape;
and B: repeatedly detecting the detection points by a rebound method, and determining the compressive strength of the concrete surface by measuring the hardness of the concrete surface; a weight with standard mass is adopted to impact a force rod which is in contact with the surface of the concrete under the driving of a standard spring, the weight of the weight rebounds for a distance due to the influence of elasticity in the process, and a rebound value N is indicated on a scale after a sliding indicator is driven; then, the rebound value is taken as an index related to the strength, and the actual strength value of the concrete can be obtained according to the rebound value N through a pre-established relation curve of the strength and the rebound value of the concrete, so that the surface strength of the concrete can be subjected to nondestructive testing;
and C: when the internal structural integrity and the quality of the concrete are detected, an ultrasonic method can be adopted for detection, simulated assembly is carried out in a laboratory according to the material and the strength of a building to be detected, similar construction is carried out according to the proportioning ratio and the thickness of the concrete, the accuracy of a detection result is ensured, and an ultrasonic generator is adopted for detecting a simulated sample;
step D: the ultrasonic method is a method for estimating the strength of concrete by measuring the average sound velocity of ultrasonic propagation, a power supply is switched on, ultrasonic waves generated by an ultrasonic generator are used for detecting a sample, pulses generated by the ultrasonic waves are transmitted into a transducer, high-frequency sound pulses are generated by a piezoelectric crystal, and the relation between the ultrasonic sound velocity and the compressive strength of the concrete is described by establishing a relevant statistical measurement strength curve, so that the relevant detection and evaluation of the mechanical property of the concrete are realized;
step E: carrying out ultrasonic rebound operation on the basis of an ultrasonic detection method, reducing detection requirements and measuring errors, placing a transmitting transducer in a region to be detected, and switching on a power supply to repeatedly detect latticed detection points through the transmitting transducer;
step F: the transmitting transducer can repeatedly transmit ultrasonic pulses during detection, so that ultrasonic waves can be transmitted in concrete to be detected, the receiving transducer is used for converting the received ultrasonic waves into electric signals to be recorded and transmitted, the electric signals can be displayed in real time through an oscilloscope, and finally, the ultrasonic instrument is used for directly measuring acoustic parameters, so that nondestructive detection is realized.
Further, the rebound value in step B is the ratio of the rebound distance to the initial length of the spring.
Further, the model of the ultrasonic generator in the step C is USM-33.
And further, a detecting instrument of the rebound method in the step B is a digital display rebound instrument.
Further, the ultrasonic sound velocity in the step D is in negative correlation with the concrete compressive strength.
Further, the oscilloscope in step F displays the crack depth by wave height.
Further, the amount of the ultrasonic wave received by the ultrasonic rebound in the step E is the reflectivity, and the maximum value of the real-time reflectivity is 30 mm.
Further, the height of the detection point in step A should be kept consistent.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A rapid nondestructive detection method for the construction quality of surface waves in building construction is characterized by comprising the following steps:
step A: cleaning the surface of a building to be detected, detecting the hardness and humidity of the concrete surface in advance, and controlling the temperature to be in a room temperature environment; positioning detection points in an area to be detected to ensure that the distribution of a plurality of detection points is in a uniform grid shape;
and B: repeatedly detecting the detection points by a rebound method, and determining the compressive strength of the concrete surface by measuring the hardness of the concrete surface; a weight with standard mass is adopted to impact a force rod which is in contact with the surface of the concrete under the driving of a standard spring, the weight of the weight rebounds for a distance due to the influence of elasticity in the process, and a rebound value N is indicated on a scale after a sliding indicator is driven; then, the rebound value is taken as an index related to the strength, and the actual strength value of the concrete can be obtained according to the rebound value N through a pre-established relation curve of the strength and the rebound value of the concrete, so that the surface strength of the concrete can be subjected to nondestructive testing;
and C: when the internal structural integrity and the quality of the concrete are detected, an ultrasonic method can be adopted for detection, simulated assembly is carried out in a laboratory according to the material and the strength of a building to be detected, similar construction is carried out according to the proportioning ratio and the thickness of the concrete, the accuracy of a detection result is ensured, and an ultrasonic generator is adopted for detecting a simulated sample;
step D: the ultrasonic method is a method for estimating the strength of concrete by measuring the average sound velocity of ultrasonic propagation, a power supply is switched on, ultrasonic waves generated by an ultrasonic generator are used for detecting a sample, pulses generated by the ultrasonic waves are transmitted into a transducer, high-frequency sound pulses are generated by a piezoelectric crystal, and the relation between the ultrasonic sound velocity and the compressive strength of the concrete is described by establishing a relevant statistical measurement strength curve, so that the relevant detection and evaluation of the mechanical property of the concrete are realized;
step E: carrying out ultrasonic rebound operation on the basis of an ultrasonic detection method, reducing detection requirements and measuring errors, placing a transmitting transducer in a region to be detected, and switching on a power supply to repeatedly detect latticed detection points through the transmitting transducer;
step F: the transmitting transducer can repeatedly transmit ultrasonic pulses during detection, so that ultrasonic waves can be transmitted in concrete to be detected, the receiving transducer is used for converting the received ultrasonic waves into electric signals to be recorded and transmitted, the electric signals can be displayed in real time through an oscilloscope, and finally, the ultrasonic instrument is used for directly measuring acoustic parameters, so that nondestructive detection is realized.
2. The rapid nondestructive testing method for surface wave construction quality of building construction according to claim 1, characterized in that: and the rebound value in the step B is the ratio of the rebound distance to the initial length of the spring.
3. The rapid nondestructive testing method for surface wave construction quality of building construction according to claim 1, characterized in that: and the model of the ultrasonic generator in the step B is USM-33.
4. The rapid nondestructive testing method for surface wave construction quality of building construction according to claim 1, characterized in that: and B, a detection instrument of the rebound method in the step B is a digital display rebound instrument.
5. The rapid nondestructive testing method for surface wave construction quality of building construction according to claim 1, characterized in that: and D, the ultrasonic sound velocity in the step D is in negative correlation with the concrete compressive strength.
6. The rapid nondestructive testing method for surface wave construction quality of building construction according to claim 1, characterized in that: and F, displaying the crack depth through the wave height by using an oscilloscope.
7. The rapid nondestructive testing method for surface wave construction quality of building construction according to claim 1, characterized in that: and E, the amount of the ultrasonic wave received by the ultrasonic rebound in the step E is the reflectivity, and the maximum value of the real-time reflectivity is 30 mm.
8. The rapid nondestructive testing method for surface wave construction quality of building construction according to claim 1, characterized in that: the height of the detection point in the step A is kept consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110718785.6A CN113324863A (en) | 2021-06-28 | 2021-06-28 | Rapid nondestructive testing method for surface wave construction quality of building construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110718785.6A CN113324863A (en) | 2021-06-28 | 2021-06-28 | Rapid nondestructive testing method for surface wave construction quality of building construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113324863A true CN113324863A (en) | 2021-08-31 |
Family
ID=77425013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110718785.6A Pending CN113324863A (en) | 2021-06-28 | 2021-06-28 | Rapid nondestructive testing method for surface wave construction quality of building construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113324863A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114037655A (en) * | 2021-10-08 | 2022-02-11 | 浙江省隧道工程集团有限公司 | Method and device for evaluating surface quality of primary shotcrete during excavation of underground gates |
| CN119178688A (en) * | 2024-10-28 | 2024-12-24 | 北京中鑫博海建设工程有限公司 | Building curtain resilience type strength detection equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1712961A (en) * | 2005-06-29 | 2005-12-28 | 贵州中建建筑科研设计院 | Method for determining compression strength of sand concrete by supersonic resilience comprehensively |
| CN101303329A (en) * | 2008-06-13 | 2008-11-12 | 东南大学 | Synthetic Strength Test Method Based on Neural Network Technology |
| CN201819901U (en) * | 2010-10-15 | 2011-05-04 | 王文秋 | Multifunctional nonmetal ultrasonic detector |
| CN205353017U (en) * | 2016-02-22 | 2016-06-29 | 张明华 | Quick detection device of building concrete intensity |
| CN105842076A (en) * | 2016-05-06 | 2016-08-10 | 太原理工大学 | Ultrasonic-rebound double-parameter nondestructive testing method for highway bridge prestressed concrete |
| CN107102066A (en) * | 2017-03-27 | 2017-08-29 | 河海大学 | A kind of device and method of indoor ultrasound detection air bubble mix light-textured soil intensity |
| CN110967474A (en) * | 2019-12-21 | 2020-04-07 | 广州新稳房屋安全鉴定有限公司 | Building strength detection method |
| CN112213217A (en) * | 2020-10-22 | 2021-01-12 | 廊坊市阳光建设工程质量检测有限公司 | Method for establishing compression strength curve of concrete detected by rebound method |
-
2021
- 2021-06-28 CN CN202110718785.6A patent/CN113324863A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1712961A (en) * | 2005-06-29 | 2005-12-28 | 贵州中建建筑科研设计院 | Method for determining compression strength of sand concrete by supersonic resilience comprehensively |
| CN101303329A (en) * | 2008-06-13 | 2008-11-12 | 东南大学 | Synthetic Strength Test Method Based on Neural Network Technology |
| CN201819901U (en) * | 2010-10-15 | 2011-05-04 | 王文秋 | Multifunctional nonmetal ultrasonic detector |
| CN205353017U (en) * | 2016-02-22 | 2016-06-29 | 张明华 | Quick detection device of building concrete intensity |
| CN105842076A (en) * | 2016-05-06 | 2016-08-10 | 太原理工大学 | Ultrasonic-rebound double-parameter nondestructive testing method for highway bridge prestressed concrete |
| CN107102066A (en) * | 2017-03-27 | 2017-08-29 | 河海大学 | A kind of device and method of indoor ultrasound detection air bubble mix light-textured soil intensity |
| CN110967474A (en) * | 2019-12-21 | 2020-04-07 | 广州新稳房屋安全鉴定有限公司 | Building strength detection method |
| CN112213217A (en) * | 2020-10-22 | 2021-01-12 | 廊坊市阳光建设工程质量检测有限公司 | Method for establishing compression strength curve of concrete detected by rebound method |
Non-Patent Citations (5)
| Title |
|---|
| 刘兆秀等: "混凝土抗压强度的检测方法分析", 《安徽建筑》 * |
| 周晓金: "无损检测在混凝土结构检测中的应用", 《广东建材》 * |
| 张宏祥等: "《公路桥梁无损检测技术》", 31 August 2016 * |
| 徐峰: "几种非破损测试方法的特征及其比较", 《混凝土》 * |
| 王英: "混凝土灌注桩工程质量超声波检测理论、方法及应用", 《中国优秀博硕士学位论文全文数据库(硕士) 工程科技Ⅱ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114037655A (en) * | 2021-10-08 | 2022-02-11 | 浙江省隧道工程集团有限公司 | Method and device for evaluating surface quality of primary shotcrete during excavation of underground gates |
| CN119178688A (en) * | 2024-10-28 | 2024-12-24 | 北京中鑫博海建设工程有限公司 | Building curtain resilience type strength detection equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11662284B2 (en) | Method for evaluating anchor bolt embedment in concrete | |
| CN109253921B (en) | Evaluation method for detecting strength of concrete test block | |
| Helal et al. | Non-destructive testing of concrete: A review of methods | |
| CN110108864B (en) | Nondestructive testing system and method for prestressed concrete beam | |
| CN104515810B (en) | A kind of laser melting coating remanufactures part defect type ultrasound analysis method | |
| CN107192624A (en) | A kind of concrete strength detecting method based on impact elasticity ripple | |
| CN103604868B (en) | Bellows Grouting Quality Detection Device and Method Based on Synthetic Aperture and Information Entropy | |
| CN112098512B (en) | A detection method for grouting sleeve grouting defects based on acoustic local resonance scattering characteristics | |
| CN113324863A (en) | Rapid nondestructive testing method for surface wave construction quality of building construction | |
| Brigante et al. | Acoustic methods for the nondestructive testing of concrete: A review of foreign publications in the experimental field | |
| CN103713048A (en) | Ultrasonic field non-contact visualization method for nondestructive inspection and device thereof | |
| Choi et al. | Contactless system for continuous monitoring of early-age concrete properties | |
| CN103616102B (en) | A kind of ultrasonic leakage compressional wave sensing device detected for sheet metal residual stress distribution | |
| CN203117167U (en) | Ultrasonic detector for road steel bridge | |
| CN203069556U (en) | Ultrasonic detection device for highway steel bridge | |
| JP2855800B2 (en) | Fatigue damage measurement method | |
| CN108593770A (en) | Concrete imitation true experiment machine is combined the apparatus and method of monitoring concrete overall process cracking with microseism | |
| Clayton et al. | Linear array ultrasonic test results from alkali-silica reaction (ASR) specimens | |
| Chen et al. | Interfacial debonding detection for steel-concrete composite structures Part II: Scanning Doppler laser-based MASW and microphone combination-based impact-acoustic vibration | |
| CN209471081U (en) | A kind of non-contact measurement apparatus of surface wave and the Lamb wave velocity of sound | |
| CN109725055B (en) | Method for evaluating early-stage freezing performance of concrete by using impact elastic wave | |
| Ozsoy et al. | Nondestructive testing of concrete using ultrasonic wave propagation | |
| CN208296786U (en) | A kind of bolt detector | |
| Schabowicz et al. | Comparative analysis of selected non-destructive methods for concrete diagnosis | |
| Zhan et al. | Research on microcracks detection of metal plate based on nonlinear ultrasound |
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 |