GB2161936B - Improvements in or relating to alternating current potential drop methods for crack detection and measurement - Google Patents

Improvements in or relating to alternating current potential drop methods for crack detection and measurement

Info

Publication number
GB2161936B
GB2161936B GB08515164A GB8515164A GB2161936B GB 2161936 B GB2161936 B GB 2161936B GB 08515164 A GB08515164 A GB 08515164A GB 8515164 A GB8515164 A GB 8515164A GB 2161936 B GB2161936 B GB 2161936B
Authority
GB
United Kingdom
Prior art keywords
relating
measurement
alternating current
current potential
potential drop
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.)
Expired
Application number
GB08515164A
Other versions
GB8515164D0 (en
GB2161936A (en
Inventor
Graham Jolley
Howard Taylor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Publication of GB8515164D0 publication Critical patent/GB8515164D0/en
Publication of GB2161936A publication Critical patent/GB2161936A/en
Application granted granted Critical
Publication of GB2161936B publication Critical patent/GB2161936B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/20—Investigating the presence of flaws

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
GB08515164A 1984-06-20 1985-06-14 Improvements in or relating to alternating current potential drop methods for crack detection and measurement Expired GB2161936B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB848415747A GB8415747D0 (en) 1984-06-20 1984-06-20 Alternating current potential drops

Publications (3)

Publication Number Publication Date
GB8515164D0 GB8515164D0 (en) 1985-07-17
GB2161936A GB2161936A (en) 1986-01-22
GB2161936B true GB2161936B (en) 1989-01-05

Family

ID=10562719

Family Applications (2)

Application Number Title Priority Date Filing Date
GB848415747A Pending GB8415747D0 (en) 1984-06-20 1984-06-20 Alternating current potential drops
GB08515164A Expired GB2161936B (en) 1984-06-20 1985-06-14 Improvements in or relating to alternating current potential drop methods for crack detection and measurement

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB848415747A Pending GB8415747D0 (en) 1984-06-20 1984-06-20 Alternating current potential drops

Country Status (1)

Country Link
GB (2) GB8415747D0 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH670504A5 (en) * 1986-11-25 1989-06-15 Battelle Memorial Institute
DE3828552C2 (en) * 1988-08-23 1994-10-13 Karl Deutsch Pruef Und Mesgera Method and device for crack depth measurement
US4871962A (en) * 1988-10-28 1989-10-03 Advanced Micro Devices, Inc. Method for measuring the size of vias
GB2289338A (en) * 1994-04-12 1995-11-15 Unvala Ltd Alternating current potential drop measurement
RU2115934C1 (en) * 1996-12-20 1998-07-20 Уханов Сергей Иванович Process testing purity of material of conductive article ( versions )
GB0019434D0 (en) * 2000-08-09 2000-09-27 Rolls Royce Plc A device and method for fatigue testing of materials
US7519487B2 (en) 2006-03-06 2009-04-14 Technion Research And Development Foundation Ltd. System and method for depth determination of cracks in conducting structures
CN101832970B (en) * 2010-05-07 2012-08-29 江苏大学 Device and method for reckoning fatigue crack propagation rate of flat alloy by AC potentiometry

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB804323A (en) * 1956-01-23 1958-11-12 British Thomson Houston Co Ltd Improvements relating to the detection of surface cracks in electrically conducting materials
GB1094303A (en) * 1964-03-24 1967-12-06 Hoyt Metal Company Of Great Br Non-destructive metal testing
GB2012965B (en) * 1977-11-11 1982-06-23 Dover & Partners Ltd Probes and apparatus for and methods of measuring crack depths
FR2471601A1 (en) * 1979-12-14 1981-06-19 Commissariat Energie Atomique METHOD AND DEVICE FOR NON-DESTRUCTIVE CONTROL OF STITCHES
US4345205A (en) * 1980-05-05 1982-08-17 Monsanto Company Finish monitor
DE3213365A1 (en) * 1982-04-10 1983-10-20 Richard Hirschmann Radiotechnisches Werk, 7300 Esslingen METHOD AND DEVICE FOR THE OPTICAL TRANSMISSION OF ELECTRICAL SIGNALS WITH POSITIVE AND NEGATIVE VOLTAGE VALUES
NO150136C (en) * 1982-04-19 1985-02-08 Sentralinst For Ind Forskning PROCEDURE AND DEVICE FOR MONITORING OF LARGE METAL CONSTRUCTIONS

Also Published As

Publication number Publication date
GB8515164D0 (en) 1985-07-17
GB2161936A (en) 1986-01-22
GB8415747D0 (en) 1984-07-25

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee