Crack-growth monitoring: Optimisation of the electrical potential technique using an analogue method

Ritchie, Robert O.; Garrett, G. G.; Knott, J. F.

doi:10.1007/bf00189118

“…Plane strain conditions were main-/ tained throughout. Crack growth rates were continuously monitored using the elctrical potential method (19), to an accuracy of at least 0.1 mm on absolute crack length. The threshold stress intensity for crack growth (~KO) was determined in terms of the alternating stress intensity (~K = Kmax -Kmin) at which no growth could be detected within 10 7 cycles.…”

Section: Introductionmentioning

confidence: 99%

On the effect of prior austenite grain size on near-threshold fatigue crack growth

Carlson¹,

Ritchie²

1977

Scripta Metallurgica

View full text Add to dashboard Cite

“…Schwalbe and Hellman [102] and Aronson and Ritchie [42] have investigated different configurations of placing input current leads and volt-, age monitoring leads. An optimized configuration was agreed upon by undertaking experimental measurements [103] and numerical analysis [42]. The input leads de termine the uniform current distribution over the cross-section, while the potential measuring leads measure very small changes in the potential as the crack grows.…”

Section: Dcpd Methods Principlementioning

confidence: 99%

Finite element and boundary element analysis of electromagnetic NDE phenomena

1998

NDT & E International

0

View full text Add to dashboard Cite

This manuscript has been reproduced from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of computer printer.The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper aligimient can adversely affect reproduction.In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material bad to be removed, a note will indicate the deletion.Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand corner and continuing from left to right in equal sections with small overlaps. Each original is also photographed in one exposure and is included in reduced form at the back of the book.Photographs included in the original manuscript have been reproduced xerographically in this copy. Higher quality 6" x 9" black and white photographic prints are available for any photographs or illustrations appearing in this copy for an additional charge. Contact UMI directly to order. Copyright © Shridhar Nath, 1992. All rights reserved.Signature was redacted for privacy.Signature was redacted for privacy.Signature was redacted for privacy.Signature was redacted for privacy.ii

show abstract

“…The accuracy of predicting fatigue crack length is vital to the study of fracture mechanics. Knott [103,104], Romilly [105] and others have studied the calibration techniques of the DCPD method extensively, since the accuracy in predicting crack length relies on calibration standards. They developed an electrolyte bath, in the shape of a specimen, with models of the defect made of non-conducting material inserted into the electrolyte.…”

Section: Dcpd Methods Principlementioning

confidence: 99%

Finite element and boundary element analysis of electromagnetic NDE phenomena

1995

NDT & E International

0

View full text Add to dashboard Cite

This manuscript has been reproduced from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of computer printer.The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper aligimient can adversely affect reproduction.In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material bad to be removed, a note will indicate the deletion.Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand corner and continuing from left to right in equal sections with small overlaps. Each original is also photographed in one exposure and is included in reduced form at the back of the book.Photographs included in the original manuscript have been reproduced xerographically in this copy. Higher quality 6" x 9" black and white photographic prints are available for any photographs or illustrations appearing in this copy for an additional charge. Contact UMI directly to order. Copyright © Shridhar Nath, 1992. All rights reserved.Signature was redacted for privacy.Signature was redacted for privacy.Signature was redacted for privacy.Signature was redacted for privacy.ii

show abstract

Crack-growth monitoring: Optimisation of the electrical potential technique using an analogue method

Cited by 106 publications

References 2 publications

On the effect of prior austenite grain size on near-threshold fatigue crack growth

On the effect of prior austenite grain size on near-threshold fatigue crack growth

Finite element and boundary element analysis of electromagnetic NDE phenomena

Finite element and boundary element analysis of electromagnetic NDE phenomena

Contact Info

Product

Resources

About