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731 Matching Results
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Analysis of fracture modes during extrusion and drawing of bimetal rods or wire. Analytical study of drawing and extrusion of superconducting filamentary wires: fracture problems and evaluation of temperature rise. Final report
Based on the upper-bound theorem in limit analysis, a theoretical model describing sound flow, core fracture, and sleeve fracture in bimetal rods and wire during extrusion and drawing was developed. The variables affecting core and sleeve fracture are: reduction in area, die geometry, friction, relative size and strength of the core, and applied surface tractions. Within the wide range of combinations of these process variables, only a small range permits co-extrusion and codrawing without fracture. Criteria for the prevention of core and sleeve fracture during co-extrusion and core fracture during co-drawing were developed and presented graphically in this study. The results were applied to the central burst problem during extrusion and drawing of homogeneous materials.
Date:
January 9, 1984
Creator:
Avitzur, B.; Wu, R.; Chou, Y.T. & Talbert, S.
Object Type:
Report
System:
The UNT Digital Library
Pretreatment of Kapton-coated cable for epoxy adhesion
Preliminary testing of a new system for protecting bonded strain gages that will be attached to the MFTF magnets indicated falling electrical resistance to ground, attributed to the infiltration of moisture. The most likely infiltration route seemed to be along the Kapton lead cable, which has an outer surface of FEP fluorocarbon resin. Samples of the cable were pretreated with a fluorocarbon etchant, Tetra-Etch, for periods of 10, 25, and 40 s at room temperature, followed by rinsing with demineralized water. The treated ends were embedded in the proposed epoxy sealant, Hysol EA 934, a compound containing 70 wt % of asbestos. The tensile-shear stresses required to pull the wires out of these embedments were measured. Results show that the three levels of treatment are equally effective in raising the bond strength from 377 psi for the untreated cable to about twice that, 763 psi. The 40-s exposure to Tetra-Etch appears to have penetrated the 0.5-mil fluorocarbon coating and attacked the Kapton film and the conductor coatings inside it.
Date:
January 9, 1984
Creator:
Carley, J. F.
Object Type:
Report
System:
The UNT Digital Library
Pulse*Star Inertial Confinement Fusion Reactor: heat transfer loop and balance of plant considerations
A conceptual heat transfer loop and balance of plant design for the Pulse*Star Inertial Confinement Fusion Reactor has been investigated and results are presented. The Pulse*Star reaction vessel, a perforated steel bell jar approximately 11 m in diameter, is immersed in Li/sub 17/Pb/sub 83/ coolant which flows through the perforations and forms a 1.5 m thick plenum of droplets around an 8 m diameter inner chamber. The reactor and associated pumps, piping, and steam generators are contained within a 17 m diameter pool of Li/sub 17/Pb/sub 83/ coolant to minimize structural requirements and occupied space, resulting in reduced cost. Four parallel heat transfer loops with flow rates of 5.5 m/sup 3//s each are necessary to transfer 3300 MWt of power. The steam generator design was optimized by finding the most cost-effective combination of heat exchanger area and pumping power. Power balance calculations based on an improved electrical conversion efficiency revealed a net electrical output of 1260 MWe to the bus bar and a resulting net efficiency of 39%. Suggested balance-of-plant layouts are also presented.
Date:
May 9, 1984
Creator:
McDowell, M. W. & Murray, K. A.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0098.0165]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "U. S. Sen. David Boren files fir re-election at the state capitol Monday while his wife, Molly, and state election board worker, Fran Roach, look on."
Date:
July 9, 1984
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0072.0155]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "A.L. Basey (General Manager) Western Electric Company"
Date:
February 9, 1984
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0148.0648]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Rev. David Croninger, (Pastor-Capitol Hill United Methodist Church."
Date:
February 9, 1984
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0144.0593]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
February 9, 1984
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0162.0629]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Roger DiSalvatore began barbershop singing when he was 15 years old. He works in the southwestern Bell network management center here."
Date:
February 9, 1984
Creator:
Southerland, Paul B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0138.0462]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "An awards banquet was held recently as part of "Medic Update 84." the annual educational conference fro the Oklahoma Emergency Medical Technicians Association and the Oklahoma Ambulance operator Association."
Date:
August 9, 1984
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0151.0295]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Some kids in Sharon Sheldon's math lab at Jackson Middle School, 2601 S Villa, raised about $50 for the zoo's Great Escape primate center."
Date:
January 9, 1984
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0141.0058]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
August 9, 1984
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0148.0153]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
February 9, 1984
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0311B.0098]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jackie Johnson, the paddled student's stepmother, carries her sentimentals on a placard."
Date:
October 9, 1984
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0353.0090]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "John Laisle, President and CEO, MidFirst Savings and Loan, city"
Date:
December 9, 1984
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0352.0229]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The home of Mr. and Mrs. Tom H. Knott is decked with Christmas trimmings."
Date:
December 9, 1984
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0223.0333]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Shirley Canham, Shawnee, shows some completed canvas embroidery."
Date:
September 9, 1984
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0267.0544]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "An empty lot next to the Mid-Continent Life Insurance building is all that remains of the former residence at 1515 N Shartel."
Date:
March 9, 1984
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0223.0546]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Moore High School football coach Ray Goldsby looks over a rack of shoulder pads in preparation for the start of two-a-day practices."
Date:
August 9, 1984
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0251.0790]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Gary Hart, Presidential Candidate"
Date:
March 9, 1984
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0271.0401]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Mike Hunter."
Date:
August 9, 1984
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0553.0281]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Linda Stodghill, Pat Hocker and Pat Wimberley sample the punch."
Date:
September 9, 1984
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0229.0280]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
July 9, 1984
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0266.0129]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Northeast 13 is a blaze of patriotic color in front of the Veterans Administration Medical center as veterans service organization representatives raise Old glory during the avenue of Flags ceremony Friday."
Date:
November 9, 1984
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0248.0533]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "OSU lineman, Rodney Harding takes off on a 36-yard interception return for a touchdown."
Date:
September 9, 1984
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History