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  Partner: UNT Libraries Government Documents Department
 Decade: 1980-1989
 Year: 1980
 Collection: Technical Report Archive and Image Library
Accurate Numerical Solutions for Elastic-Plastic Models

Accurate Numerical Solutions for Elastic-Plastic Models

Date: March 1980
Creator: Schreyer, H. L.; Kulak, R. F. & Kramer, J. M.
Description: The accuracy of two integration algorithms is studied for the common engineering condition of a von Mises, isotropic hardening model under plane stress. Errors in stress predictions for given total strain increments are expressed with contour plots of two parameters: an angle in the pi plane and the difference between the exact and computed yield-surface radii.
Contributing Partner: UNT Libraries Government Documents Department
Advanced Fuel Cell Development Progress Report: April-June 1980

Advanced Fuel Cell Development Progress Report: April-June 1980

Date: November 1980
Creator: Pierce, R. D.; Arons, R. M.; Dusek, J. T.; Fraioli, A. V.; Kucera, G. H.; Poeppel, R. B. et al.
Description: Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). This report describes efforts directed toward understanding and improving components of molten carbonate fuel cells and have included operation of a 10-cm square cell.
Contributing Partner: UNT Libraries Government Documents Department
Advanced Fuel Cell Development Progress Report: January-March 1980

Advanced Fuel Cell Development Progress Report: January-March 1980

Date: September 1980
Creator: Pierce, R. D.; Arons, R. M.; Fraioli, A. V.; Kucera, G. H.; Poeppel, R. B.; Sim, J. W. et al.
Description: Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). This report describes efforts directed toward understanding and improving components of molten carbonate fuel cells and have included operation of 10-cm square cells.
Contributing Partner: UNT Libraries Government Documents Department
Advanced Fuel Cell Development Progress Report: July-September 1979

Advanced Fuel Cell Development Progress Report: July-September 1979

Date: February 1980
Creator: Pierce, R. D.; Kinoshita, K.; Kucera, G. H.; Poeppel, R. B.; Sim, J. W. & Singh, R. N.
Description: Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). This report describes efforts directed toward understanding and improving components of the molten carbonate fuel cells operated at temperatures near 925 K.
Contributing Partner: UNT Libraries Government Documents Department
Advanced Fuel Cell Development Progress Report: October-December 1979

Advanced Fuel Cell Development Progress Report: October-December 1979

Date: May 1980
Creator: Pierce, R. D.; Kucera, G. H.; Kupperman, D. S.; Poeppel, R. B.; Sim, J. W.; Singh, R. N. et al.
Description: Quarterly report discussing fuel cell research and development work at Argonne National Laboratory (ANL). This report describes efforts directed toward understanding and improving components of molten carbonate fuel cells and have included operation of 10-cm square cells.
Contributing Partner: UNT Libraries Government Documents Department
Analysis of an Internally Pressurized Prismatic Cell Can

Analysis of an Internally Pressurized Prismatic Cell Can

Date: April 1980
Creator: Majumdar, S.
Description: This report contains an elastic stress and displacement analysis of a prismatic cell can subjected to internal pressure. A computer program was written to perform the analysis. The results show that, for the geometry chosen, the thicknesses of the cell-can walls and the magnitude of the internal pressure are the most important parameters that determine the stresses and deformations of the cell can. Recommendations for future studies are included.
Contributing Partner: UNT Libraries Government Documents Department
Application of International Safeguards to Fast Critical Assembly Facilities. FY 1980 Summary Report

Application of International Safeguards to Fast Critical Assembly Facilities. FY 1980 Summary Report

Date: December 1980
Creator: Argonne National Laboratory
Description: Nuclear materials inventory-verification techniques for large split-table fast critical assemblies are being studied in this program. Emphasis has been given to techniques that minimize fuel handling in order to reduce facility downtime and radiation exposure to the inventory team. The techniques studied include drawer seals, autoradiography, and spectral index measurements. Two-drawer sealing techniques have been studied, and the relative strengths and weaknesses are pointed out. The rod-type locking mechanism would not disrupt the reactor cooling air flow or interfere with autoradiography but is more expensive to implement. Passive autoradiography was used in a ZPPR inventory to verify to a 93% confidence level that less than 8-kg plutonium was missing. The inventory was completed in four days by a five-member team with radiation exposures well within acceptable limits. Two autoradiographic film packages were developed to distinguish HEU from a DU matrix. The 30-mil pack requires an exposure between 4 and 16 hours and fits into most of the drawers. The 40-mil pack requires only a two-hour exposure but fits into less than half the drawers.
Contributing Partner: UNT Libraries Government Documents Department
Applied Mathematical Sciences Research at Argonne, October 1, 1978-March 31, 1980

Applied Mathematical Sciences Research at Argonne, October 1, 1978-March 31, 1980

Date: 1980?
Creator: Pieper, Gail W.
Description: This report reviews the research activities of the Applied Mathematical Sciences Section for the period October 1, 1978, through March 31, 1980. The body of the report discusses various projects carried out in four major areas of research: applied analysis, computational mathematics, software engineering, and software clinics. Information on section staff, visitors, workshops, and seminars is found in the appendices.
Contributing Partner: UNT Libraries Government Documents Department
Augusta, Georgia--South Carolina

Augusta, Georgia--South Carolina

Date: 1980
Creator: U.S. Fish and Wildlife Service
Description: Map showing biological resources (aquatic organisms, terrestrial organisms, land use, etc.) in the Augusta region of the Atlantic coast area. Scale 1:250,000.
Contributing Partner: UNT Libraries Government Documents Department
Automatic Transformations in the Inference Process

Automatic Transformations in the Inference Process

Date: July 1980
Creator: Veroff, Robert L.
Description: A technique for incorporating automatic transformations into processes such as the application of inference rules, subsumption, and demodulation provides a mechanism for improving search strategies for theorem proving problems arising from the field of program verification. The incorporation of automatic transformations into the inference process can alter the search space for a given problem, and is particularly useful for problems having broad rather than deep proofs. The technique can also be used to permit the generation of inferences that might otherwise be blocked and to build some commutativity or associativity into the unification process. Appropriate choice of transformations, and new literal clashing and unification algorithms for applying them, showed significant improvement on several real problems according to several distinct criteria.
Contributing Partner: UNT Libraries Government Documents Department
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