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in subjects: "Young Modulus"  
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Acceptance criteria for heat exchanger head staybolts

Description: Each of the six primary coolant loop systems of the Savannah River Site production reactors contains two parallel single-pass heat exchangers to transfer heat from the primary coolant (D{sub 2}O) to the secondary cooling water (H{sub 2}O). The configuration of the heat exchangers includes a plenary space defined by the heat exchanger tubesheet and the heat exchanger head at both the heat exchanger inlet and outlet to the primary piping. The primary restraint of the heat exchanger head (Type 304… more
Date: January 1, 1991
Creator: Sindelar, R. L.; Lam, P. S.; Barnes, D. M.; Placr, A. & Morrison, J. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Investigation of the elastic modulus of SSC coils

Description: The Materials Development Laboratory at Fermilab has been conducting experiments on the mechanical properties of superconducting coils. Two of these measurements were designed to measure the elastic modulus of actual SSC coils in an effort to increase the precision of previously reported data. The first experiment utilizes a fixture redesigned for increased stiffness, in an attempt to reduce uncertainty in the data. As in the previous fixture of this type, the inner coil radius has been left un… more
Date: March 1, 1991
Creator: Markley, F.; Kerby, J.; Sizemore, B.; Khoun, C. & King, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Acceptance criteria for heat exchanger head staybolts

Description: Each of the six primary coolant loop systems of the Savannah River Site production reactors contains two parallel single-pass heat exchangers to transfer heat from the primary coolant (D{sub 2}O) to the secondary cooling water (H{sub 2}O). The configuration of the heat exchangers includes a plenary space defined by the heat exchanger tubesheet and the heat exchanger head at both the heat exchanger inlet and outlet to the primary piping. The primary restraint of the heat exchanger head (Type 304… more
Date: December 31, 1991
Creator: Sindelar, R. L.; Lam, P. S.; Barnes, D. M.; Placr, A. & Morrison, J. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Bond Strength of Cementitious Borehole Plugs in Welded Tuff

Description: Axial loads on plugs or seals in an underground repository due to gas, water pressures and temperature changes induced subsequent to waste and plug emplacement lead to shear stresses at the plug/rock contact. Therefore, the bond between the plug and rock is a critical element for the design and effectiveness of plugs in boreholes, shafts or tunnels. This study includes a systematic investigation of the bond strength of cementitious borehole plugs in welded tuff. Analytical and numerical analysi… more
Date: February 1, 1991
Creator: Akgun, H. & Daemen, J. J. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of the elastic modulus of SSC coils

Description: The Materials Development Laboratory at Fermilab has been conducting experiments on the mechanical properties of superconducting coils. Two of these measurements were designed to measure the elastic modulus of actual SSC coils in an effort to increase the precision of previously reported data. The first experiment utilizes a fixture redesigned for increased stiffness, in an attempt to reduce uncertainty in the data. As in the previous fixture of this type, the inner coil radius has been left un… more
Date: March 1, 1991
Creator: Markley, F.; Kerby, J.; Sizemore, B.; Khoun, C. & King, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Hierarchical Cellular Materials

Description: In this paper a method for estimating the contributions of both the composite and the cellular microstructures to the overall material properties and the mechanical efficiency of natural cellular solids will be described. The method will be demonstrated by focusing on the Young's modulus; similar techniques can be used for other material properties. The results suggest efficient microstructures for engineered cellular materials.
Date: January 1, 1991
Creator: Gibson, L. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Hierarchical Cellular Materials

Description: In this paper a method for estimating the contributions of both the composite and the cellular microstructures to the overall material properties and the mechanical efficiency of natural cellular solids will be described. The method will be demonstrated by focusing on the Young`s modulus; similar techniques can be used for other material properties. The results suggest efficient microstructures for engineered cellular materials.
Date: December 31, 1991
Creator: Gibson, L. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Formation strength parameters from acoustic and density logs in emplacement holes

Description: A new acoustic tool for dry emplacement holes has been built and tested in several emplacement holes. This tool uses a large hammer source and 3 piezo-electric transducers that are independently pressed against the borehole wall. The detectors are 6, 9 and 12 ft from the hammer source. A pure gel is injected between these detectors and the borehole wall to eliminate any air space. The compressional wave travel time and the shear wave travel time are recorded at each detector. The compressional … more
Date: January 1, 1991
Creator: Mathews, M. A.; Fenster, R. A. & Plannerer, H. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Calculation of experiment uncertainty in laboratory determination of several geoengineering properties of tuffs from Yucca Mountain, Nevada; Yucca Mountain Site Characterization Project

Description: A method for estimating the precision and accuracy of measured parameters is described. Examples of application of the estimating method are presented for density, porosity, compressive strength, Young`s modulus, Poisson`s ratio, and thermal expansion. With the exception of the coefficient of linear thermal expansion, all laboratory data for these properties for tuff samples appear to have reasonable experiment uncertainties. Uncertainties in the thermal-expansion coefficients may be as high as… more
Date: November 1, 1991
Creator: Nimick, F. B.; Schwartz, B. M. & Price, R. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modulus dispersion and attenuation in tuff and granite

Description: The effects of loading frequency, strain amplitude, and saturation on elastic moduli and attenuation have been measured in samples of the Topopah Spring Member welded tuff. Four different laboratory techniques have been used to determine Young`s modulus and extensional wave attenuation at frequencies ranging from 10{sup {minus}2} to 10{sup 6} Hz. The results are compared with data acquired for Sierra White granite under the same conditions. The modulus and attenuation in room dry samples remain… more
Date: December 23, 1991
Creator: Haupt, R. W.; Martin, R. J., III; Tang, X.; Dupree, W. J. & Price, R. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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