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Title: RVE Determination for the Microstructural Analysis of a Syntactic Foam.


Abstract not provided.

; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: Proposed for presentation at the Intern Technical Exchange held July 25, 2016 in Albuquerque, NM.
Country of Publication:
United States

Citation Formats

Huddleston, Bradley, Long, Kevin Nicholas, and Brown, Judith Alice. RVE Determination for the Microstructural Analysis of a Syntactic Foam.. United States: N. p., 2016. Web.
Huddleston, Bradley, Long, Kevin Nicholas, & Brown, Judith Alice. RVE Determination for the Microstructural Analysis of a Syntactic Foam.. United States.
Huddleston, Bradley, Long, Kevin Nicholas, and Brown, Judith Alice. 2016. "RVE Determination for the Microstructural Analysis of a Syntactic Foam.". United States. doi:.
title = {RVE Determination for the Microstructural Analysis of a Syntactic Foam.},
author = {Huddleston, Bradley and Long, Kevin Nicholas and Brown, Judith Alice},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month = 7

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  • As the offshore oil industry moves into deeper water, the need for advanced technology increases. New and improved syntactic foam buoyancy materials for marine risers are among the technical advances that make today`s operations in ultradeep water possible. This paper describes the latest developments in syntactic foam, including new advanced systems for 10,000 ft. depth that offer as much as 20% more buoyancy per unit volume than conventional materials, with significant savings in size and weight of riser equipment. Also included are suggested guidelines for the most efficient and cost-effective use of these new buoyancy systems.
  • A decomposition model has been developed to predict the response of removable syntactic foam (RSF) exposed to fire-like heat fluxes. RSF consists of glass micro-balloons (GMB) in a cured epoxy polymer matrix. A chemistry model is presented based on the chemical structure of the epoxy polymer, mass transport of polymer fragments to the bulk gas, and vapor-liquid equilibrium. Thermophysical properties were estimated from measurements. A bubble nucleation, growth, and coalescence model was used to describe changes in properties with the extent of reaction. Decomposition of a strand of syntactic foam exposed to high temperatures was simulated.
  • No abstract prepared.
  • A complete Earley parser which includes recognition and parse extraction has been implemented on a triangular array of processors. The detailed analysis of the complete parser is given. The recognition algorithm is executed in parallel by adopting a new operator, x/sup */, and restricting the input context-free grammar to be lamda-free. The parse extraction algorithm which follows recognition uses a nonrecursive subroutine to generate the correct right-parse in parallel. A special busing arrangement within this array enables the right data to reach the right place at the right time. Simulation examples are provided. The results show that when a stringmore » of length >n> is under testing, at the system time 2>n> + 1, the correct right-parse will be obtained if the string is accepted. 15 references.« less
  • The formation of blue perchromic acid represents one of the most sensitive and selective tests for the identification of chromium. The sorption of perchromic acid on TBP loaded foam has been investigated for the detection, semiquantitative and quantitative determinations of chromium(VI). In foam batch method, it was possible to detect as low as 0.6, 0.4 and 0.2 ppm of chromium(VI) with unloaded or tricaprylylamine loaded foams, TBP-amine-loaded foams and TBP loaded foams, respectively. The selectivity of the proposed TBP loaded foam test for the detection of chromium(VI) in the presence of diverse interfering ions was also investigated. In addition, itmore » was possible to determine chromium(VI) semiquantitatively by comparing the color of the foam cube with a prepared standard color scale. The proposed method has been employed for the determination of chromium(VI) in tap water. A method for the direct and quantitative spectrophotometric determination of chromium(VI) TBP-loaded foam parallepipeds has been developed. The TBP-perchromic acid has a maximum absorbance at 580 nm which is quite identical to the absorption maxima in TBP solution. The present method was applied for the analysis of chromium(VI) in natural water and satisfactory results were obtained.« less