CA2623305A1 - Electrochemical fatigue sensor system and methods - Google Patents
Electrochemical fatigue sensor system and methods Download PDFInfo
- Publication number
- CA2623305A1 CA2623305A1 CA002623305A CA2623305A CA2623305A1 CA 2623305 A1 CA2623305 A1 CA 2623305A1 CA 002623305 A CA002623305 A CA 002623305A CA 2623305 A CA2623305 A CA 2623305A CA 2623305 A1 CA2623305 A1 CA 2623305A1
- Authority
- CA
- Canada
- Prior art keywords
- substrate
- reference electrode
- electrolyte
- adhesive layer
- fatigue
- 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.)
- Granted
Links
Classifications
-
- 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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
- G01F1/64—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by measuring electrical currents passing through the fluid flow; measuring electrical potential generated by the fluid flow, e.g. by electrochemical, contact or friction effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
-
- 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
- G01N2203/0066—Propagation of crack
-
- 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
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
-
- 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
- G01N2203/0617—Electrical or magnetic indicating, recording or sensing means
- G01N2203/0629—Electrical or magnetic indicating, recording or sensing means using thin films, paintings
Abstract
A method and an electrochemical sensor device for determining a fatigue status of a growing crack in a substrate. The device includes an electrode formed from a stainless steel mesh and having a bottom surface that is coated with an adhesive layer and has a release paper attached to the adhesive layer. The adhesive layer is exposed through separation of the release paper from the adhesive layer. Contacting the adhesive layer to the substrate secures the device to the substrate and forms a cavity that contains an electrolyte and is partially bound by the substrate. The adhesive seals the bottom surface of the device to the substrate in order to prevent leakage of electrolyte from the cavity. When the substrate is subjected to cyclic loading, the fatigue status of the growing crack in the substrate is determined in accordance with a measured current between the reference electrode and the substrate.
Claims (3)
1. A method for determining a fatigue status of a growing crack in a substrate, comprising:
(a) providing an electrochemical sensor device that includes an electrode formed from a stainless steel mesh, wherein the electrochemical device has a bottom surface that contacts the substrate, the bottom surface is coated with an adhesive layer, and a release paper is attached to the adhesive layer;
(b) separating the release paper from the adhesive layer, thereby exposing the adhesive layer;
(c) securing the electrochemical sensor device to the substrate by bringing the adhesive layer in contact with the substrate and thereby forming an electrolyte cavity bounded in part by the substrate, wherein the adhesive seals the bottom surface of the device to the substrate in order to prevent leakage of electrolyte from the cavity;
(d) filling the cavity with the electrolyte; and (e) determining, when the substrate is subjected to cyclic loading, the fatigue status of the growing crack in the substrate in accordance with a measured current between the reference electrode and the substrate.
(a) providing an electrochemical sensor device that includes an electrode formed from a stainless steel mesh, wherein the electrochemical device has a bottom surface that contacts the substrate, the bottom surface is coated with an adhesive layer, and a release paper is attached to the adhesive layer;
(b) separating the release paper from the adhesive layer, thereby exposing the adhesive layer;
(c) securing the electrochemical sensor device to the substrate by bringing the adhesive layer in contact with the substrate and thereby forming an electrolyte cavity bounded in part by the substrate, wherein the adhesive seals the bottom surface of the device to the substrate in order to prevent leakage of electrolyte from the cavity;
(d) filling the cavity with the electrolyte; and (e) determining, when the substrate is subjected to cyclic loading, the fatigue status of the growing crack in the substrate in accordance with a measured current between the reference electrode and the substrate.
2. An electrochemical sensor device for determining a fatigue status of a growing crack in a substrate, comprising:
(a) a reference electrode formed from a stainless steel mesh material that is substantially impermeable to an electrolyte, wherein the reference electrode has a bottom side that faces the substrate and a top side that faces away from the substrate, and wherein at least one opening is provided in the mesh material, said at least one opening being sufficient in size to permit electrolyte to flow through the reference electrode;
(b) a first electrolyte cavity formed between the substrate and the bottom side of the reference electrode;
(c) a second electrolyte cavity formed between the top side of the reference electrode and a cover of the device;
(d) an electrolyte inlet port formed in a wall of the first electrolyte cavity;
(e) a bleeder output port formed in a wall of the second electrolyte cavity;
and (f) a sensor that measures a current between the reference electrode and the substrate when the substrate is subjected to cyclic loading.
(a) a reference electrode formed from a stainless steel mesh material that is substantially impermeable to an electrolyte, wherein the reference electrode has a bottom side that faces the substrate and a top side that faces away from the substrate, and wherein at least one opening is provided in the mesh material, said at least one opening being sufficient in size to permit electrolyte to flow through the reference electrode;
(b) a first electrolyte cavity formed between the substrate and the bottom side of the reference electrode;
(c) a second electrolyte cavity formed between the top side of the reference electrode and a cover of the device;
(d) an electrolyte inlet port formed in a wall of the first electrolyte cavity;
(e) a bleeder output port formed in a wall of the second electrolyte cavity;
and (f) a sensor that measures a current between the reference electrode and the substrate when the substrate is subjected to cyclic loading.
3. A method for determining a fatigue status of a growing crack at a suspected fatigue location on a substrate, comprising:
(a) providing a first electrochemical sensor device that includes a first reference electrode;
(b) providing a second electrochemical sensor device that includes a second reference electrode;
(c) positioning the first electrochemical sensor device over the suspected fatigue location on the substrate, and measuring a first current signal between the first reference electrode and the substrate when the substrate is subjected to cyclic loading;
(d) positioning the second electrochemical sensor device at a location on the substrate where fatigue cracking is not probable, and measuring a second current signal between the second reference electrode and the substrate when the substrate is subjected to cyclic loading; and (e) assessing the fatigue status of the growing crack at the suspected fatigue location by comparing information from the first and second current signals.
(a) providing a first electrochemical sensor device that includes a first reference electrode;
(b) providing a second electrochemical sensor device that includes a second reference electrode;
(c) positioning the first electrochemical sensor device over the suspected fatigue location on the substrate, and measuring a first current signal between the first reference electrode and the substrate when the substrate is subjected to cyclic loading;
(d) positioning the second electrochemical sensor device at a location on the substrate where fatigue cracking is not probable, and measuring a second current signal between the second reference electrode and the substrate when the substrate is subjected to cyclic loading; and (e) assessing the fatigue status of the growing crack at the suspected fatigue location by comparing information from the first and second current signals.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/240,677 | 2005-09-30 | ||
| US11/240,677 US7572360B2 (en) | 2005-09-30 | 2005-09-30 | Electrochemical fatigue sensor systems and methods |
| PCT/US2006/018833 WO2007040651A2 (en) | 2005-09-30 | 2006-05-16 | Electrochemical fatigue sensor system and methods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2623305A1 true CA2623305A1 (en) | 2007-04-12 |
| CA2623305C CA2623305C (en) | 2010-05-11 |
Family
ID=37900856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2623305A Expired - Fee Related CA2623305C (en) | 2005-09-30 | 2006-05-16 | Electrochemical fatigue sensor system and methods |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US7572360B2 (en) |
| EP (1) | EP1943506A4 (en) |
| JP (1) | JP4364932B2 (en) |
| KR (1) | KR101279210B1 (en) |
| CN (1) | CN101278193B (en) |
| AU (1) | AU2006297854B2 (en) |
| BR (1) | BRPI0616617B1 (en) |
| CA (1) | CA2623305C (en) |
| HK (1) | HK1125453A1 (en) |
| WO (1) | WO2007040651A2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2009282053B2 (en) * | 2008-08-12 | 2015-05-14 | Efs International S.A. | Potentiostat data link |
| CN102095596A (en) * | 2011-01-11 | 2011-06-15 | 中南大学 | Real-time temperature compensation method of bridge fatigue life gauge |
| CN102095597A (en) * | 2011-01-11 | 2011-06-15 | 中南大学 | Method for measuring temperature correction factor of bridge fatigue life gage |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4065373A (en) * | 1976-04-26 | 1977-12-27 | Petrolite Corporation | Hydrogen patch cell |
| US4435252A (en) * | 1980-04-25 | 1984-03-06 | Olin Corporation | Method for producing a reticulate electrode for electrolytic cells |
| JPS57101741A (en) * | 1980-12-16 | 1982-06-24 | Mitsubishi Heavy Ind Ltd | Method for attaching measuring cell |
| CN2043757U (en) * | 1989-01-25 | 1989-08-30 | 沈阳飞机制造公司 | Crack detector |
| GB2244810B (en) * | 1990-06-02 | 1994-01-26 | Sycopel Scient Ltd | Test cell |
| FR2676807A1 (en) * | 1991-05-22 | 1992-11-27 | Tech Milieu Ionisant | Apparatus and method for measuring the surface area of a surface |
| JP3121953B2 (en) * | 1993-02-24 | 2001-01-09 | 東北電力株式会社 | Method for detecting carbide in low alloy steel by electrochemical polarization method |
| US5771890A (en) * | 1994-06-24 | 1998-06-30 | Cygnus, Inc. | Device and method for sampling of substances using alternating polarity |
| US6026691A (en) * | 1995-06-30 | 2000-02-22 | University Of Pennsylvania | Methods and devices for electrochemically determining metal fatigue status |
| US6151969A (en) * | 1998-07-14 | 2000-11-28 | Southwest Research Institute | Electromechanical and electrochemical impedance spectroscopy for measuring and imaging fatigue damage |
| US6328878B1 (en) * | 1999-08-11 | 2001-12-11 | Dacco Sci, Inc. | Adhesive tape sensor for detecting and evaluating coating and substrate degradation utilizing electrochemical processes |
| JP3342467B2 (en) * | 2000-03-30 | 2002-11-11 | 川崎重工業株式会社 | Crack-type fatigue detecting element, method of manufacturing the same, and damage estimation method using crack-type fatigue detecting element |
| US6611151B1 (en) * | 2000-09-21 | 2003-08-26 | The United States Of America As Represented By The Secretary Of The Navy | Coating assessment system based on electrochemical noise |
| CN1182390C (en) * | 2003-01-17 | 2004-12-29 | 清华大学 | Detection method for movable flaw produced by stress or fatigue |
| CN1282876C (en) * | 2004-10-27 | 2006-11-01 | 东华大学 | Multifunctional measuring method and device for flexible material bending fatigue |
-
2005
- 2005-09-30 US US11/240,677 patent/US7572360B2/en active Active - Reinstated
-
2006
- 2006-05-16 KR KR1020087008735A patent/KR101279210B1/en active IP Right Grant
- 2006-05-16 EP EP06759893.8A patent/EP1943506A4/en not_active Withdrawn
- 2006-05-16 AU AU2006297854A patent/AU2006297854B2/en not_active Ceased
- 2006-05-16 JP JP2008533327A patent/JP4364932B2/en not_active Expired - Fee Related
- 2006-05-16 CN CN2006800364232A patent/CN101278193B/en not_active Expired - Fee Related
- 2006-05-16 CA CA2623305A patent/CA2623305C/en not_active Expired - Fee Related
- 2006-05-16 BR BRPI0616617-2A patent/BRPI0616617B1/en not_active IP Right Cessation
- 2006-05-16 WO PCT/US2006/018833 patent/WO2007040651A2/en active Application Filing
-
2009
- 2009-04-01 HK HK09103097.7A patent/HK1125453A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| AU2006297854A1 (en) | 2007-04-12 |
| EP1943506A4 (en) | 2016-04-20 |
| HK1125453A1 (en) | 2009-08-07 |
| EP1943506A2 (en) | 2008-07-16 |
| AU2006297854B2 (en) | 2011-03-31 |
| CA2623305C (en) | 2010-05-11 |
| KR20080053499A (en) | 2008-06-13 |
| JP4364932B2 (en) | 2009-11-18 |
| CN101278193A (en) | 2008-10-01 |
| CN101278193B (en) | 2012-08-22 |
| BRPI0616617A2 (en) | 2011-06-28 |
| BRPI0616617B1 (en) | 2017-10-10 |
| WO2007040651A3 (en) | 2007-10-11 |
| JP2009510431A (en) | 2009-03-12 |
| US20070074976A1 (en) | 2007-04-05 |
| WO2007040651A2 (en) | 2007-04-12 |
| US7572360B2 (en) | 2009-08-11 |
| KR101279210B1 (en) | 2013-06-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20210517 |