CN108872370A - A kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity - Google Patents

A kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity Download PDF

Info

Publication number
CN108872370A
CN108872370A CN201810836045.0A CN201810836045A CN108872370A CN 108872370 A CN108872370 A CN 108872370A CN 201810836045 A CN201810836045 A CN 201810836045A CN 108872370 A CN108872370 A CN 108872370A
Authority
CN
China
Prior art keywords
eddy current
orthogonal
current sensor
probe
detection
Prior art date
Application number
CN201810836045.0A
Other languages
Chinese (zh)
Inventor
林俊明
戴永红
吴晓瑜
Original Assignee
爱德森(厦门)电子有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 爱德森(厦门)电子有限公司 filed Critical 爱德森(厦门)电子有限公司
Priority to CN201810836045.0A priority Critical patent/CN108872370A/en
Publication of CN108872370A publication Critical patent/CN108872370A/en

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
    • G01N27/72Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating magnetic variables
    • G01N27/82Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00Measuring arrangements characterised by the use of electric or magnetic means
    • G01B7/02Measuring arrangements characterised by the use of electric or magnetic means for measuring length, width or thickness
    • G01B7/06Measuring arrangements characterised by the use of electric or magnetic means for measuring length, width or thickness for measuring thickness
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00Measuring arrangements characterised by the use of electric or magnetic means
    • G01B7/34Measuring arrangements characterised by the use of electric or magnetic means for measuring roughness or irregularity of surfaces

Abstract

The invention discloses a kind of householder methods for assessing orthogonal eddy current sensor detection weld seam validity, using the method for orthogonal eddy current sensor and the integrated detection of absolute type eddy current probe, differential type eddy current probe, monitoring and evaluation face of weld degree of roughness and overcoat thickness, when face of weld degree of roughness and overcoat thickness index are more than detection specified value, then the detection invalidating signal of orthogonal eddy current sensor is determined.

Description

A kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity

Technical field

The present invention relates to a kind of lossless detection methods, have more particularly to a kind of orthogonal eddy current sensor detection weld seam of assessment The householder method of effect property.

Background technique

Metal weldment is widely present in each industry and civilian installation field.From a safety viewpoint, welding quality inspection is outstanding It is method that is important, being currently used primarily in metal component weld seam detection, there is ray, magnetic powder, ultrasound, vortex etc..Ray method due to Field conduct is not easy, therefore the less use in Larger Engineering Projects, and magnetic powder, osmosis, ultrasonic method are because to face of weld requirement Height is especially also not easy the weld seam examinations with protective layer, needs polishing welding seams.A few years ago, since orthogonal vortex passes The appearance of sensor so that being not required to removal protective layer, and allows face of weld to have the existing detection of certain roughness to be possibly realized.But Any method has limitation, also such to orthogonal eddy current sensor.Such as surface is too of poor quality, protective layer is too thick(As 2mm with On)And it is very uneven, it can all make the signal disorder of orthogonal eddy current sensor, it is difficult to which correct distinguish is crackle or interference.

Summary of the invention

It is an object of the invention to overcome the deficiency of the prior art, provides a kind of assessment orthogonal eddy current sensor detection weld seam The householder method of validity, using orthogonal eddy current sensor and absolute type eddy current probe, differential type eddy current probe collection At the method for detection, monitoring and evaluation face of weld degree of roughness and overcoat thickness.

The technical solution adopted by the present invention to solve the technical problems is:It is a kind of to assess orthogonal eddy current sensor detection weld seam The householder method of validity, it is characterised in that:By orthogonal eddy current sensor and an absolute type eddy current probe and a difference Fraction eddy current probe, which integrates, to be detected;The integrated approach is, by orthogonal eddy current sensor and absolute type whirlpool Stream detection probe, differential type eddy current probe are along being fixed together before and after scanning direction, or by orthogonal eddy current sensor Insertion is fixed in absolute type eddy current probe at center, with differential type eddy current probe along scanning direction before and after it is solid It is scheduled on together;Using absolute type eddy current probe monitoring and evaluation face of weld overcoat thickness, when face of weld protects thickness Spending index is more than detection specified value, then determines the detection invalidating signal of orthogonal eddy current sensor;It is visited using differential type EDDY CURRENT Head monitoring and evaluation face of weld degree of roughness, when face of weld degree of roughness index be more than detection specified value, then determine orthogonal whirlpool The detection invalidating signal of flow sensor.

Further, orthogonal eddy current sensor is integrated with a differential type eddy current probe and is detected; The differential vortex detection probe includes two test coil of eddy current;The integrated approach is to be embedded in orthogonal eddy current sensor It is fixed in a test coil of eddy current in differential type eddy current probe;Eddy current testing instrument uses timesharing alternative excitation side Method includes the following steps,

A. a test coil of eddy current in differential type eddy current probe is first motivated, and receives test coil of eddy current acquisition Absolute eddy current testing signal realizes absolute type EDDY CURRENT, monitoring and evaluation face of weld overcoat thickness;

B. two test coil of eddy current in differential type eddy current probe are then motivated simultaneously, and receive two EDDY CURRENT lines The eddy current testing signal of circle acquisition carries out difference processing, realizes differential type EDDY CURRENT, monitoring and evaluation face of weld degree of roughness;

C. orthogonal eddy current sensor is finally motivated, realizes non-directional EDDY CURRENT;

D. circulating repetition step a, step b, step c.

The invention has the advantages that a kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity, is adopted With the method for orthogonal eddy current sensor and the integrated detection of absolute type eddy current probe, differential type eddy current probe, monitoring is commented Face of weld degree of roughness and overcoat thickness are estimated, when face of weld degree of roughness and overcoat thickness index are more than detection regulation Value, then determine the detection invalidating signal of orthogonal eddy current sensor.

Invention is further described in detail with reference to embodiments, but the orthogonal currents sensing of a kind of assessment of the invention The householder method of device detection weld seam validity is not limited to the embodiment.

Detailed description of the invention

The present invention is further described for middle embodiment with reference to the accompanying drawing.

Fig. 1 is the detection method schematic diagram of the embodiment of the present invention one.

Fig. 2 is the detection method schematic diagram of the embodiment of the present invention two.

Fig. 3 is the detection method schematic diagram of the embodiment of the present invention three.

In figure, 1. orthogonal eddy current sensors, 2. absolute type eddy current probes, 3. differential type eddy current probes, 4. welderings Seam.

Specific embodiment

Embodiment one, as shown in Figure 1, a kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity, It is characterized in that:By orthogonal eddy current sensor 1 and an absolute type eddy current probe 2 and a differential type eddy current probe 3 It integrates and is detected;The integrated approach is, by orthogonal eddy current sensor 1 and absolute type eddy current probe 2, difference Formula eddy current probe 3 is fixed together along scanning direction front and back;Using 2 monitoring and evaluation weld seam of absolute type eddy current probe 4 surface protecting layer thickness, when 4 surface protecting layer thickness indication of weld seam be more than detection specified value, then determine orthogonal eddy current sensor 1 Detection invalidating signal;Using 3 monitoring and evaluation weld seam of differential type eddy current probe, 4 surface roughness, when 4 surface of weld seam is thick Rough level index is more than detection specified value, then determines the detection invalidating signal of orthogonal eddy current sensor 1.

Embodiment two, as shown in Fig. 2, a kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity, It is characterized in that:By orthogonal eddy current sensor 1 and an absolute type eddy current probe 2 and a differential type eddy current probe 3 It integrates and is detected;The integrated approach is that the insertion of orthogonal eddy current sensor 1 is fixed on absolute type EDDY CURRENT and is visited In first 2 at center, it is being fixed together before and after scanning direction with differential type eddy current probe 3;It is vortexed using absolute type 2 monitoring and evaluation weld seam of detection probe, 4 surface protecting layer thickness, when 4 surface protecting layer thickness indication of weld seam be more than detection specified value, Then determine the detection invalidating signal of orthogonal eddy current sensor 1;Using 3 monitoring and evaluation weld seam of differential type eddy current probe, 4 surface Degree of roughness, when 4 surface roughness index of weld seam be more than detection specified value, then determine orthogonal eddy current sensor 1 detection letter It is number invalid.

Embodiment three, as shown in figure 3, further, by orthogonal eddy current sensor 1 and a differential type eddy current probe 3 integrate and are detected;The differential vortex detection probe includes two test coil of eddy current;The integrated approach is, In the test coil of eddy current that the insertion of orthogonal eddy current sensor 1 is fixed in differential type eddy current probe 3;EDDY CURRENT Instrument uses timesharing alternative excitation method, includes the following steps,

A. a test coil of eddy current in differential type eddy current probe 3 is first motivated, and receives test coil of eddy current acquisition Absolute eddy current testing signal, realize absolute type EDDY CURRENT, 4 surface protecting layer thickness of monitoring and evaluation weld seam;

B. two test coil of eddy current in differential type eddy current probe 3 are then motivated simultaneously, and receive two EDDY CURRENTs The eddy current testing signal of coil acquisition carries out difference processing, realizes differential type EDDY CURRENT, 4 rough surface journey of monitoring and evaluation weld seam Degree;

C. orthogonal eddy current sensor 1 is finally motivated, realizes non-directional EDDY CURRENT;

D. circulating repetition step a, step b, step c.

Above-described embodiment is only used to further illustrate that a kind of orthogonal eddy current sensor detection weld seam of assessment of the invention is effective The householder method of property, but the invention is not limited to embodiments, according to the technical essence of the invention to above embodiments institute Any simple modification, equivalent change and modification of work, fall within the scope of protection of technical solution of the present invention.

Claims (2)

1. a kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity, it is characterised in that:Orthogonal vortex is passed Sensor is integrated and is detected with an absolute type eddy current probe and a differential type eddy current probe;The collection It is at method, by orthogonal eddy current sensor and absolute type eddy current probe, differential type eddy current probe along scanning direction Front and back is fixed together, or by orthogonal eddy current sensor insertion be fixed in absolute type eddy current probe at center, with Differential type eddy current probe is fixed together along scanning direction front and back;It is welded using absolute type eddy current probe monitoring and evaluation Seam surface overcoat thickness, when face of weld overcoat thickness index be more than detection specified value, then determine orthogonal eddy current sensor Detection invalidating signal;Using differential type eddy current probe monitoring and evaluation face of weld degree of roughness, when face of weld is coarse Level index is more than detection specified value, then determines the detection invalidating signal of orthogonal eddy current sensor.
2. a kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity according to claim 1, special Sign is:Further, orthogonal eddy current sensor is integrated with a differential type eddy current probe and is detected;Institute Stating differential vortex detection probe includes two test coil of eddy current;The integrated approach is to be embedded in orthogonal eddy current sensor solid It is scheduled in a test coil of eddy current in differential type eddy current probe;
Eddy current testing instrument uses timesharing alternative excitation method, includes the following steps,
A. a test coil of eddy current in differential type eddy current probe is first motivated, and receives test coil of eddy current acquisition Absolute eddy current testing signal realizes absolute type EDDY CURRENT, monitoring and evaluation face of weld overcoat thickness;
B. two test coil of eddy current in differential type eddy current probe are then motivated simultaneously, and receive two EDDY CURRENT lines The eddy current testing signal of circle acquisition carries out difference processing, realizes differential type EDDY CURRENT, monitoring and evaluation face of weld degree of roughness;
C. orthogonal eddy current sensor is finally motivated, realizes non-directional EDDY CURRENT;
D. circulating repetition step a, step b, step c.
CN201810836045.0A 2018-07-26 2018-07-26 A kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity CN108872370A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810836045.0A CN108872370A (en) 2018-07-26 2018-07-26 A kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810836045.0A CN108872370A (en) 2018-07-26 2018-07-26 A kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity

Publications (1)

Publication Number Publication Date
CN108872370A true CN108872370A (en) 2018-11-23

Family

ID=64305541

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810836045.0A CN108872370A (en) 2018-07-26 2018-07-26 A kind of householder method for assessing orthogonal eddy current sensor detection weld seam validity

Country Status (1)

Country Link
CN (1) CN108872370A (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56163450A (en) * 1980-05-21 1981-12-16 Hitachi Ltd Probing coil for detecting crack by utilizing eddy current
JPS60127458A (en) * 1983-12-14 1985-07-08 Hitachi Constr Mach Co Ltd Detecting apparatus of welded part
JPH10288605A (en) * 1997-04-14 1998-10-27 Kobe Steel Ltd Magnetic testing device and method
JPH11194003A (en) * 1998-01-05 1999-07-21 Nkk Corp Method for detecting welding seam part of steel pipe
CN201503415U (en) * 2009-09-21 2010-06-09 宝山钢铁股份有限公司 Online detection device for strip welding seam defects
CN102338773A (en) * 2010-07-27 2012-02-01 上海工程技术大学 Nondestructive testing method for welding seam under anticorrosion coating of metal surface and device thereof
CN103323522A (en) * 2012-03-22 2013-09-25 奥林巴斯Ndt公司 Eddy current system and object detecting method by using the same
JP2014025704A (en) * 2012-07-24 2014-02-06 Toshiba Corp Eddy current flaw detection device
US20150362462A1 (en) * 2014-06-13 2015-12-17 General Electric Company Method and system for eddy current device dynamic gain adjustment
CN205374376U (en) * 2016-01-08 2016-07-06 武汉理工大学 Bead crack eddy current inspection sensor probe
CN108120764A (en) * 2017-12-21 2018-06-05 爱德森(厦门)电子有限公司 A kind of orthogonal Eddy Current Testing Transducer

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56163450A (en) * 1980-05-21 1981-12-16 Hitachi Ltd Probing coil for detecting crack by utilizing eddy current
JPS60127458A (en) * 1983-12-14 1985-07-08 Hitachi Constr Mach Co Ltd Detecting apparatus of welded part
JPH10288605A (en) * 1997-04-14 1998-10-27 Kobe Steel Ltd Magnetic testing device and method
JPH11194003A (en) * 1998-01-05 1999-07-21 Nkk Corp Method for detecting welding seam part of steel pipe
CN201503415U (en) * 2009-09-21 2010-06-09 宝山钢铁股份有限公司 Online detection device for strip welding seam defects
CN102338773A (en) * 2010-07-27 2012-02-01 上海工程技术大学 Nondestructive testing method for welding seam under anticorrosion coating of metal surface and device thereof
CN103323522A (en) * 2012-03-22 2013-09-25 奥林巴斯Ndt公司 Eddy current system and object detecting method by using the same
JP2014025704A (en) * 2012-07-24 2014-02-06 Toshiba Corp Eddy current flaw detection device
US20150362462A1 (en) * 2014-06-13 2015-12-17 General Electric Company Method and system for eddy current device dynamic gain adjustment
CN205374376U (en) * 2016-01-08 2016-07-06 武汉理工大学 Bead crack eddy current inspection sensor probe
CN108120764A (en) * 2017-12-21 2018-06-05 爱德森(厦门)电子有限公司 A kind of orthogonal Eddy Current Testing Transducer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
林俊明 等: "焊缝裂纹快速检测与深度测量", 《无损探伤》 *

Similar Documents

Publication Publication Date Title
EP2950038B1 (en) Electromagnetic assessment of multiple conductive tubulars
RU2299399C2 (en) Method for determining object surface profile
Papaelias et al. High-speed inspection of rails using ACFM techniques
EP1996928B1 (en) System and method for the nondestructive testing of elongate bodies and their weldbond joints
JP2720389B2 (en) Method and apparatus for detecting intrinsic stress of component
ES2388877T3 (en) Procedure and system for non-destructive electromagnetic ultrasonic testing of a metal part
US9213018B2 (en) Partial saturation eddy current sensor apparatus and method of use
US6549005B1 (en) Magnetic detection of discontinuities in railway rails using hall effect sensors
Mook et al. Electromagnetic imaging using probe arrays
Brauer et al. Eddy current testing of metallic sheets with defects using force measurements
US10591442B2 (en) Rail check device and rail check system
ES2712069T3 (en) Procedures and apparatus for the inspection of plates and walls of pipes
JP4021321B2 (en) Stress measurement of ferromagnetic materials
CA2548938C (en) Apparatus and method for detection of defects using flux leakage techniques
US20040041560A1 (en) Method, system and apparatus for ferromagnetic wall monitoring
US8536860B2 (en) Method and apparatus for non-destructive testing
EP0195794B1 (en) Method for detecting surface defects by means of foucault currents and device for implementing such method
JP5558203B2 (en) Apparatus and method for inductive measurement
Nicholson et al. Modelling of the response of an ACFM sensor to rail and rail wheel RCF cracks
CA2573597A1 (en) Method and device for the nondestructive testing of pipes
US6479992B2 (en) Leakage flux flaw detecting method and method for manufacturing hot rolled steel sheet using the same
CN101520435B (en) Method and device for detecting corrosion of component with permeability magnetic material protective layer
CN106274977A (en) The direct current Magnetic Flux Leakage Testing System of a kind of trigger-type drainage pattern and method thereof
WO2011034654A1 (en) Eddy current inspection of case hardening depth
CN103499404B (en) Ferromagnetic component alterante stress measurement mechanism and measuring method thereof

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