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Stress-Relief Displacements Induced by Drilling--Applications to Holographic Measurements of in Situ Stress
The holographic stressmeter is an instrument which has been developed at Caltech to allow determination of the complete stress tensor from in situ borehole measurements. The stressmeter uses double-exposure holographic interferometry to record the displacements induced by the drilling of a small sidehole into the borehole wall. The local stresses, which are the result of the far-field stresses, concentrated at the borehole, cause deformation of the surface of the borehole wall in the vicinity of the sidehole. The first part of this study uses a thin infinite elastic plate subjected to plane stress at infinity to model the displacements at the borehole wall. However, the existence of some holograms which were difficult to model closely led us to examine the validity of this model. In order to investigate the problem further, we performed a two-dimensional finite element analysis for an elastic box with a terminated hole. We varied the dimensions of the hole to see what effect the radius and depth of the hole might have on the displacements. The plate model predicts that the depth of the hole should have no effect on the horizontal components of displacement, but the finite element results show that the magnitude of both …
Date:
April 24, 1992
Creator:
Ahrens, T. J. & Smither, C. L.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0172.0529]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Several youths put Hafer park's playground equipment to good use."
Date:
April 24, 1993
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0158.0588]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Kaiser Elementary fourth-grader Michael Deloney, 10, wanted to know, so he made a working model of a water treatment plant for Science Expo '90."
Date:
April 24, 1990
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0150.0355]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jeremy Eaton of Cashion believes agriscience and biotechnology projects though in the F F A program will benefit both food production and ecology -- "things like the right fertilizer, that will not only help the crop yield but will result in not as much fertilizer and not having as much runoff."
Date:
April 24, 1990
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0134.0451]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "There is no paint on the painting ' that hang in Young Chun's booth at the festival of the Arts.."
Date:
April 24, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0138.0600]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "OPUBCO EDITOR , RETIRED ...."
Date:
April 24, 1994
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0335.0059]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "As judges debate the merits of her work, Melanie Hall, 11, reads a book Wednesday in front of her science fair project at the Omniplex in Oklahoma City."
Date:
April 24, 1991
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0324.0294]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Ervin Keith, newly appointed director of the Metropolitan Fair Housing Authority, said last week he plans to put new teeth in his agency's efforts to combat housing discrimination in Oklahoma City."
Date:
April 24, 1991
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0553.0411]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Stacey Wyett, left, and Beverly Hodges visit at the secretaries' style show."
Date:
April 24, 1991
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0323.0430]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "As a linotype operator in 1971, John Karrenbrock set some of the last hot metal used by The Oklahoman."
Date:
April 24, 1994
Creator:
Cook, J. Don
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0255.0477]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Scott Heiple and Charis Maynard enjoy going to movies, shopping or just spending time with their younger brother and sister."
Date:
April 24, 1993
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0271.0072]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Michael Hurst, 1990-91 president of the National Restaurant Association."
Date:
April 24, 1991
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0227.0190]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "John J. M. Graus always observes the American Memorial Day back home in Maastricht, Holland."
Date:
April 24, 1990
Creator:
Hellstern, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0255.0660]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Oklahoma Foundation for Exellence Awards Banquet chairman Ted d'Andriole, left, with his wife Anna, and Jim Helton."
Date:
April 24, 1993
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0226.0664]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Theresa Stringer and Roger and Lenore Graham from left, with a show house program"
Date:
April 24, 1993
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0229.0392]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
April 24, 1991
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0232.0291]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Michael Waugh and Ellen Ward star in the Pollard Theater's production of "A Streetcar Named Desire, " being presented through June 15."
Date:
April 24, 1991
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0156.0589]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Oklahoma City University's Jimmie Dedmon lines up a putt during Tuesday's final round."
Date:
April 24, 1990
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0258.0159]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
April 24, 1992
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0230.0206]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "John Griffith says he gets about 1 to 1 1/2 pounds of junk mail each week."
Date:
April 24, 1990
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0170.0611]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "L TO R RAY DYKES , HAZEL PARTNER , JUDY GLASPEY ..."
Date:
April 24, 1992
Creator:
Southerland, Paul B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0262B.0585]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Dun-Haven Fashion King canters his driver Virgil Cagel, Columbia, Mo., around the fairgrounds arena at Saturday's Oklahoma Centennial Horse Show to win the Shetland Roadster Pony Championship."
Date:
April 24, 1993
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0223.0056]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
April 24, 1995
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0239.0023]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Ken Kibbe and Susie Dowdy begin framing work for Dianna Vest's home in the 1100 block of NW 44."
Date:
April 24, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History