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An Integrated Optical Sensor for GMAW Feedback Control

Description: The integrated optical sensor (IOS) is a multifunction feedback control sensor for arc welding, that is computer automated and independent of significant operator interaction. It is based on three major off-the-shelf'' components: a charged coupled device (CCD) camera, a diode laser, and a processing computer. The sensor head is compact and lightweight to avoid interference with weld head mobility, hardened to survive the harsh operating environment, and free of specialized cooling and power re… more
Date: January 1, 1992
Creator: Taylor, Paul L.; Watkins, Arthur D.; Larsen, Eric D. & Smartt, Herschel B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Eddy Current Examination of Spent Nuclear Fuel Canister Closure Welds

Description: The National Spent Nuclear Fuel Program (NSNFP) has developed standardized DOE SNF canisters for handling and interim storage of SNF at various DOE sites as well as SNF transport to and SNF handling and disposal at the repository. The final closure weld of the canister will be produced remotely in a hot cell after loading and must meet American Society of Mechanical Engineers (ASME) Section III, Division 3 code requirements thereby requiring volumetric and surface nondestructive evaluation to v… more
Date: April 1, 2006
Creator: Watkins, Arthur D.; Kunerth, Dennis C. & McJunkin, Timothy R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The Effects of Stress Mitigation on Nondestructive Examination

Description: Ultrasonic volumetric and eddy current and visual profile surface inspections of the completed weld securing the outer lid of the Yucca Mountain waste package are required after stress mitigation. However, the technique implemented may affect the ability of the different evaluation techniques to properly characterize the completed weld. An evaluation was performed to determine the extent the nondestructive evaluation techniques are affected by two candidate mitigation processes: controlled plas… more
Date: August 1, 2004
Creator: Kunerth, Dennis C.; Larsen, Eric D.; Mcjunkin, Timothy R. & Watkins, Arthur D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Yucca Mountain Waste Package Closure System

Description: The current disposal path for high-level waste is to place the material into secure waste packages that are inserted into a repository. The Idaho National Laboratory has been tasked with the development, design, and demonstration of the waste package closure system for the repository project. The closure system design includes welding three lids and a purge port cap, four methods of nondestructive examination, and evacuation and backfill of the waste package, all performed in a remote environme… more
Date: April 1, 2006
Creator: Smartt, Herschel; Watkins, Arthur; Pace, David; Bitsoi, Rodney; Larsen, Eric; McJunkin, Timothy et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Ultrasonic Phased Array Implementation of the Inside Diameter Creeping Wave Sizing Method

Description: This paper describes a technique for implementing the ultrasonic inside diameter (ID) creeping wave technique for detection and sizing ID connected defects using a phased array ultrasonic system. The technique uses multiple focal laws to produce the examination modes. The first focal law is designed to create a shear wave nominally at the critical angle for mode conversion to a longitudinal wave at the ID of a part, thus creating a creeping wave. This focal law is focused at the ID to improve s… more
Date: May 1, 2006
Creator: McJunkin, Timothy R.; Davis, J. Mark; Kunerth, Dennis C. & Watkins, Arthur D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Equal Channel Angular Extrusion Progress Report for March 1998 - May 1999

Description: Pure copper and Alloy 5083 aluminum were processed by equal channel angular extrusion (ECAE); their microstructural evolution and corresponding mechanical properties were investigated. Work also began on the possible use of ECAE to synthesize advanced materials or to consolidate metal powders or powder mixtures. The die tooling used for ECAE is described and selected microstructural and mechanical property results for ECAE-processed copper and cold-rolled (conventionally-processed) copper in th… more
Date: October 1, 1999
Creator: Macheret, Yevgeny; Watkins, Arthur Deloss; Korth, Gary Elvan; Lillo, Thomas Martin; Flinn, John Elwood, Jr.; Herling, D. R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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