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Development of instrumentation for magnetic nondestructive evaluation (open access)

Development of instrumentation for magnetic nondestructive evaluation

The use of failure-prone components in critical applications has been traditionally governed by removing such components from service prior to the expiration of their predicted life expectancy. Such early retirement of materials does not guarantee that a particular sample will not fail in actual usage. The increasing cost of such life expectancy based operation and increased demand for improved reliability in industrial settings has necessitated an alternate form of quality control. Modern applications employ nondestructive evaluation (NDE), also known as nondestructive testing (NDT), as a means of monitoring the levels and growth of defects in a material throughout its operational life. This thesis describes the modifications made to existing instrumentation used for magnetic measurements at the Center for Nondestructive Evaluation at Iowa State University. Development of a new portable instrument is also given. An overview of the structure and operation of this instrumentation is presented. This thesis discusses the application of the magnetic hysteresis and Barkhausen measurement techniques, described in Sections 1.3.1 and 1.3.2 respectively, to a number of ferromagnetic specimens. Specifically, measurements were made on a number of railroad steel specimens for fatigue characterization, and on specimens of Damascus steel and Terfenol-D for materials evaluation. 60 refs., 51 figs., …
Date: September 23, 1991
Creator: Hariharan, S.
Object Type: Report
System: The UNT Digital Library

[Photograph 2012.201.B0156.0257]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Special services director Phil DeBerry believes Norman schools are at the edge of doing something fantastic for children with learning disabilities."
Date: September 23, 1991
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0251.0641]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Rhonda Harryman of Edmond's Cross Timbers Elementary School, Oklahoma's Teacher of the Year, gets a congratulatory kiss from her husband, Gil, a battalion chief with the Edmond Fire Department."
Date: September 23, 1991
Creator: Beckel, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0251.0642]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Oklahoma's 1991-1992 teacher of the year, Rhonda Harryman of Edmond, left, is congratulated Monday by state school superintendent Sandy Garrett."
Date: September 23, 1991
Creator: Beckel, Jim
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0093.0059]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "And, in lower photo, David Blake revisits the Edmond's western city limit line, which he helped establish as a city councilman in the early '60s."
Date: September 23, 1991
Creator: Southerland, Paul
Object Type: Photograph
System: The Gateway to Oklahoma History
The LLNL configurable seismic monitoring system (open access)

The LLNL configurable seismic monitoring system

Lawrence Livermore National Laboratory (LLNL) developed and tested a portable, high-quality seismic recording system for monitoring underground nuclear explosions. The configurable seismic monitoring system (CSMS) was designed to satisfy the designated seismic station (DSS) requirements for instrumentation to be deployed in a vault as set forth in the protocol of the Threshold Test Ban Treaty (TTBT). As a proof-of-concept test under treaty monitoring conditions, two configurations of this system were built, and each was deployed at a different seismic station to record the Nevada Test Site (NTS) event Bexar. Both configurations successfully recorded this event, demonstrating the flexibility and the operation of the basis design. 3 refs., 8 figs.
Date: September 23, 1991
Creator: Nakanishi, K. K.; Zucca, J. J.; Bowman, B. C.; Ewert, D. W.; Harben, P. E.; Jarpe, S. P. et al.
Object Type: Report
System: The UNT Digital Library
[UNT UPDATE clipping, Vol. 22 No. 2, September 23, 1991] (open access)

[UNT UPDATE clipping, Vol. 22 No. 2, September 23, 1991]

A clipping from the UNT UPDATE publication about the College of Arts and Sciences and the various projects within it. Included are Judy Youngblood's drawings that were featured in an exhibit and the NTIEVA program.
Date: September 23, 1991
Creator: Spencer, Peggy
Object Type: Clipping
System: The UNT Digital Library
[Letter from Tim Curtis and Susanna MacKenzie to unknown recipients, September 23, 1993] (open access)

[Letter from Tim Curtis and Susanna MacKenzie to unknown recipients, September 23, 1993]

Letter from Tim Curtis and Susanna MacKenzie discussing alternate workplace funding for United Way and fundraising opportunities for the company.
Date: September 23, 1991
Creator: Curtis, Tim & MacKenzie, Susanna
Object Type: Letter
System: The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 69, No. 280, Ed. 1 Monday, September 23, 1991 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 69, No. 280, Ed. 1 Monday, September 23, 1991

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: September 23, 1991
Creator: Brown, Leon
Object Type: Newspaper
System: The Portal to Texas History
Sulphur Springs News-Telegram (Sulphur Springs, Tex.), Vol. 113, No. 225, Ed. 1 Monday, September 23, 1991 (open access)

Sulphur Springs News-Telegram (Sulphur Springs, Tex.), Vol. 113, No. 225, Ed. 1 Monday, September 23, 1991

Daily newspaper from Sulphur Springs, Texas that includes local, state, and national news along with advertising.
Date: September 23, 1991
Creator: Keys, Clarke
Object Type: Newspaper
System: The Portal to Texas History

[Historic Property, Photograph 2051-17]

Photograph of a historic property located at 2014 17th in Lubbock, Texas.
Date: September 23, 1991
Creator: Texas Historical Commission
Object Type: Photograph
System: The Portal to Texas History
[News Clip: Arafat - PLO] captions transcript

[News Clip: Arafat - PLO]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. Story aired at 10pm.
Date: September 23, 1991, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Barfield pkg] captions transcript

[News Clip: Barfield pkg]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 5 P.M.
Date: September 23, 1991
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[Update, September 23, 1991] (open access)

[Update, September 23, 1991]

A newsletter clipping with bulletin information about the art happenings at the University of North Texas, information about the progress with the program North Texas Institute for Educators on the Visual Arts and with the art faculty involved at the school, the program and the Denton community. This newsletter informs about North Texas Institute for Educators on the Visual Arts members Nancy Cason, Project Coordinator, and colleague Cassandra Broadus, graduate research assistant, presented "discipline-based art education" or DBAE, at a pre-kindergarten - sixth grade teacher education workshop. Co-directors, Jack Davis and Bill McCarter were presenters at Arts Education Initiative Training Institutes conducted by the Texas Commission on the Arts in San Antonio and Houston.
Date: September 23, 1991
Creator: University of North Texas
Object Type: Clipping
System: The UNT Digital Library
[Press Release Announcing the "Jubilations and Celebrations" Exhibition - September 3, 1991] (open access)

[Press Release Announcing the "Jubilations and Celebrations" Exhibition - September 3, 1991]

Press release announcing the "Jubilations and Celebrations" art exhibit to be hosted at Barnes-Blackman Galleries from October 5, 1991 through November 16, 1991. The exhibit will feature paintings by Bruce Brown and paper sculptures by Wilmer Cannon.t
Date: September 23, 1991
Creator: Barnes-Blackman Galleries
Object Type: Text
System: The Portal to Texas History

[Historic Property, Photograph 2062-14]

Photograph of a historic property located at 1804 Ave X in Lubbock, Texas.
Date: September 23, 1991
Creator: Texas Historical Commission
Object Type: Photograph
System: The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 91, No. 163, Ed. 1 Monday, September 23, 1991 (open access)

Altus Times (Altus, Okla.), Vol. 91, No. 163, Ed. 1 Monday, September 23, 1991

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: September 23, 1991
Creator: Lomenick, Rick
Object Type: Newspaper
System: The Gateway to Oklahoma History
[Letter from Suzy Wagers to Texas Human Rights Foundation Board of Trustees, September 23, 1991] (open access)

[Letter from Suzy Wagers to Texas Human Rights Foundation Board of Trustees, September 23, 1991]

Letter from Suzy Wagers to the Board of Trustees of the Texas Human Rights Foundation discussing the upcoming foundation retreat and board nominee updates.
Date: September 23, 1991
Creator: Wagers, Suzy
Object Type: Letter
System: The Portal to Texas History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 78, No. 8, Ed. 1 Monday, September 23, 1991 (open access)

Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 78, No. 8, Ed. 1 Monday, September 23, 1991

Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date: September 23, 1991
Creator: Lake, Charles S.
Object Type: Newspaper
System: The Gateway to Oklahoma History
Special Nevada report (open access)

Special Nevada report

This report is submitted to Congress by the Secretary of the Air Force, the Secretary of the Navy, and the Secretary of the Interior pursuant to Section 6 of the Military Lands Withdrawal Act of 1986. It contains an analysis and evaluation of the effects on public health and safety resulting from DOD and Department of Energy (DOE) military and defense-related uses on withdrawn public lands in the State of Nevada and in airspace overlying the State. This report describes the cumulative impacts of those activities on public and private property in Nevada and on plants, fish and wildlife, cultural, historic, scientific, recreational, wilderness and other resources of the public lands of Nevada. An analysis and evaluation of possible measures to mitigate the cumulative effects of the withdrawal of lands and the use of airspace in Nevada for defense-related purposes was conducted, and those considered practical are listed.
Date: September 23, 1991
Creator: unknown
Object Type: Report
System: The UNT Digital Library

[Photograph 2012.201.B1344.0706]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "East Central University's football team is making its coach an old man way before his time. The Tigers are 2-0-1, which makes Hank Walbrick very happy, but they way they're going about it has had the second-year mentor checking for gray hairs on Sunday mornings."
Date: September 23, 1991
Creator: East Central University
Object Type: Photograph
System: The Gateway to Oklahoma History
Burleson Star (Burleson, Tex.), Vol. 26, No. 119, Ed. 1 Monday, September 23, 1991 (open access)

Burleson Star (Burleson, Tex.), Vol. 26, No. 119, Ed. 1 Monday, September 23, 1991

Semi-weekly newspaper from Burleson, Texas that includes local, state, and national news along with advertising.
Date: September 23, 1991
Creator: Ellertson, Sally
Object Type: Newspaper
System: The Portal to Texas History
[Self Management, 2] captions transcript

[Self Management, 2]

A video of self management training for special needs students.
Date: September 23, 1991
Creator: University of North Texas. Center for Media Production.
Object Type: Video
System: The UNT Digital Library
The Wave (Port Lavaca, Tex.), Vol. 100, No. 255, Ed. 1 Monday, September 23, 1991 (open access)

The Wave (Port Lavaca, Tex.), Vol. 100, No. 255, Ed. 1 Monday, September 23, 1991

Daily newspaper from Port Lavaca, Texas that includes local, state, and national news along with advertising.
Date: September 23, 1991
Creator: Bales, Steve & Fortney, Paul, Jr.
Object Type: Newspaper
System: The Portal to Texas History