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Quantitative characterization of the environment experienced by cargo in motor carrier accidents

Description: Highlights and conclusions from a detailed study (SLA-74-0002) which was performed to determine the severity of motor carrier accidents are presented. The analysis is based upon accident rates reported for intercity shipments of property by Class I and II Intersate Motor Carriers. (TFD)
Date: October 31, 1974
Creator: Foley, J.T.; Hartman, W.F.; Larson, D.W. & Clarke, R.K.
Partner: UNT Libraries Government Documents Department

Improved quality GSC-4 sealing glass

Description: A glass commonly used to make graded seals between fused silica and higher-expansion glasses, General Electric Company GSC-4, was remelted to obtain higher quality glass than is available commercially. Remelting the commercially available glass cane in a platinum crucible at 1700 deg C for periods of 40 to 60 hours produced a homogeneous glass free of crysinlline inclusions and bubbles. During this melting, water was evolved and some constituents were lost from the surface layer. The bulk composition was not substantially changed and the remelted glass had approximately the same thermal expansion coefficient and viscosity as the original glass. (auth)
Date: November 1, 1973
Creator: Eagan, R.J. & Shelby, J.E.
Partner: UNT Libraries Government Documents Department

Material interactions of the operational SNAP-9A generator

Description: The design of the SNAP-9A generator includes a number of different materials in intimate contact. The possible interactions among the materials and their effect on the postulated re-entry breakup sequence of the generator are discussed. Experimental evidence obtained under static vacuum conditions for all of the interactions possible is presented. (auth)
Date: June 1, 1964
Creator: Sasmor, D.J. & Wessling, F.C. Jr.
Partner: UNT Libraries Government Documents Department

Mechanical properties of several products from a single heat of type 304 stainless steel

Description: From winter meeting of American Society of Mechanical Engineers; Detroit, Michigan, USA (11 Nov 1973). Tensile and stress-rupture tests were run on several products from a 90-ton heat of type 304 stainless steel. The yield stress of the products in the as-received condition varied from 26,500 to 57,200 psi at 75 deg F. There were significant differences between the strengths of various products and considerable variation for a single product due to nonuniform residual cold work. Reannealing 0.5 h at 2000 deg F resulted in yield stresses in the 25,000 to 27,000 psi range; only the properties of the hot- reduced tubing fell below this range. At a test temperature of 1100 deg F, the as-received products had yield stresses from 14,800 to 35,500 psi. Reannealing caused the yield stresses of all but three products to fall in the range 10,200 to 11,700 psi. Stress-rupture tests at 1100 deg F on the reannealed products did not reveal significant variation in properties. (auth)
Date: January 1, 1973
Creator: McCoy, H.E. Jr. & Waddell, R.D. Jr.
Partner: UNT Libraries Government Documents Department

Analysis of fast risetime pulsed thermoelectric generator

Description: A pulsed thermoelectric generator which is heated by fissioning of /sup 235/U when exposed to a pulse of neutron irradiation is discussed. The open circuit voltage response of the device is determined using the CINDA numerical differencing analyzer computer code. A parametric study of material properties affecting system response is performed. (auth)
Date: April 1, 1974
Creator: Burgess, E.L.
Partner: UNT Libraries Government Documents Department

Analysis of targets with nonuniform composition as a function of depth: elastic and inelastic scattering

Description: An analytical technique to reduce yield versus energy spectra to impurity concentration versus depth is described. It applies to both elastic and inelastic reactions and calculates the depth distribution profile directly from the observed data. It uses the experimental spectrum to be analyzed, stopping cross sections and reaction cross sections to obtain the desired depth scales and the depth dependence of the target composition. A computer code, NUCREA, has been developed to perform such analysis. A description of NUCREA, a user's guide, a complete listing and a typical output for the code are contained in the report. An example showing the analysis of experimental data is also presented.
Date: December 1, 1975
Creator: Langley, R.A.
Partner: UNT Libraries Government Documents Department

Transportation environment data bank index

Description: In an effort to determine the environment intensities to which shipping containers will be exposed, a ''Data Bank'' of environmental information has been established by Sandia Laboratories, Division 1285 for the ERDA Division of Environmental Control Technology. This document is an index which can be used to request data of interest. (auth)
Date: February 1, 1976
Creator: Davidson, C.A. & Foley, J.T.
Partner: UNT Libraries Government Documents Department

Development of an interconnection method for the RTG (radioisotope thermoelectric generator) output circuit

Description: The results of development studies leading to an interconnection method for the output circuit are described. Procedures recommended include the use of thick film platinum-gold metallization in conjunction with parallel gap welding of the ribbon-to-circuit and ribbon-to- side contact joints. Variables investigated include the type and thickness of thick film, and the weld parameters such as voltage, time, electrode force, and electrode gap. Techniques proven in development are summarized in the form of process descriptions. Satisfactory metallization and bond parameters were developed and the system appears suitable for production application. (auth)
Date: April 1, 1974
Creator: Johnson, D.R.
Partner: UNT Libraries Government Documents Department

Development of MC2730 RTG thermopile side contact attachment process

Description: Gold plated Kovar pads were eutectic bonded to p and n-type SiGe specimens using a 98 wt% AuSi preform alloy. This joining technique was shown to yield strong reliable bonds. A method based on this technique is described for producing bonding pads to the outermost elements of the MC2730 RTG thermopile. (auth)
Date: September 1, 1973
Creator: Yost, F.G.
Partner: UNT Libraries Government Documents Department