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3 edition of Evaluation of temperature gradient in Advanced Automated Directional Solidification Furnace (AADSF) by numerical simulation found in the catalog.

Evaluation of temperature gradient in Advanced Automated Directional Solidification Furnace (AADSF) by numerical simulation

Evaluation of temperature gradient in Advanced Automated Directional Solidification Furnace (AADSF) by numerical simulation

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Published by Society of Photo-Optical Instrumentation Engineers, National Aeronautics and Space Administration, National Technical Information Service, distributor] in Bellingham, Wash, [Washington, D.C, Springfield, Va .
Written in English

    Subjects:
  • Heat transfer.,
  • Furnaces.,
  • Mercury cadmium tellurides.,
  • Melts (Crystal growth)

  • Edition Notes

    StatementAndris V. Bune, Donald C. Gillies, and Sandor L. Lehoczky.
    SeriesNASA-TM -- 112640., NASA technical memorandum -- 112640.
    ContributionsGillies, Donald C., Lehoczky, Sandor L., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15543039M

    Comment: This is an ex-library book and may have the usual library/used-book markings book has soft covers. In fair condition, suitable as a study copy.. Please note the Image in this listing is a stock photo and may not match the covers of the actual itemAuthor: G. Sheward.   Groover fundamentals modern manufacturing 4th txtbk 4 Solidification and Cooling Solidification of Metals Solidification Time Shrinkage Directional Solidification Riser Design In this part of the book, we consider those manufacturing processes inwhich the starting work material iseither a liquid.

    High Temperature Alloys for Gas Turbines and Other Applications, Proceedings of a Conference Held in Liège, Belgium, October , W. Betz, ISBN , Editor W. Betz4/5(1). AADSF - Advanced Automated Directional Solidification Furnace {eng} AAE - Abort Advisory Equipment {eng AGHF - Advanced Gradient Heating Furnace /also Advanced Gradient Heating Facility/ (NASA; experiment) ATDB - Aerothermodynamic Data Book {eng} ATDL - Advanced Tactical Data Link (C4SMP).

    Full text of "Microgravity Science and Applications. Program Tasks and Bibliography for FY " See other formats. Silicon Casting Station GT Solar DSS Silicon Casting Furnace, Directional Solidification System, Station # 29 (BP Safety Upgrades), Includes Kinney MB and KTC high vacuum pumps, Cooling Water L/Min. to bar, Argon40 L/min, Outside Dimension (L x W) mm x mm x mm, Line Voltage V, 3ph.


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Evaluation of temperature gradient in Advanced Automated Directional Solidification Furnace (AADSF) by numerical simulation Download PDF EPUB FB2

Get this from a library. Evaluation of temperature gradient in Advanced Automated Directional Solidification Furnace (AADSF) by numerical simulation. [Andris V Bune; Donald C Gillies; Sandor L Lehoczky; United States. National Aeronautics and Space Administration.].

Directional solidification and convection in small diameter crucibles J. Chen a, P.K. Sung b, S.N. Tewari a, D.R. Poirier by*, H.C. DeGroh I11 a Chemical Engineering Department, Cleveland State University, Cleveland, OH 15, USA Department of Materials Science and Engineering, The University of Arizona, Tucson, AZUSA Advanced Metallics Branch, NASA-Glenn File Size: 6MB.

ELSEVIER Ultrasonics 36 () Crystallization process control during directional solidification in a high-temperature-gradient furnace by guided ultrasonic waves and real-time signal evaluation M. Schmachtla-*, A.

Schievenbusch b, G. Zimmermann b, W. Grilla a Institut f Experimentelle Physik II der Universi Leipzig, Linntr. 5, D Leipzig, Germany b ACCESS Cited by: The temperature gradient in front of S/L interface was measured on Zone Melting Liquid Metal Cooling (ZMLMC) directional solidification apparatus.

The. Advanced Automated Directional Solidification Furnace AAL Aero-acoustic Levitation AC&S and Evaluation" DDU Data Display Unit DEL Delivery DEP Dedicated Experiment Processor DFRC Hugh L. Dryden Flight Research Center DFVLR Low-Temperature Gradient Heating Furnace LTRF Low Temperature Research Facility LVLH " Local Vertical, Local.

Abstract. The effect of the temperature gradient and the crystal growth rate on the structure formation in nickel and niobium superalloys is studied under the conditions of the flat, cellular, dendritic, or dendritic–cellular configuration of Cited by: 1.

A Novel Approach to Determine the Heat Transfer Coefficient in Directional Solidification Furnaces co,t. O, Z furnace was determined using a novel approach utilizing in-situ temperature measurement. The gradient freeze, and zone melting techniques.

It is time consuming and costly to experi. The following list of acronyms, though by no means complete, includes many of those used in this document, as well as some that are often found in text associated with Microgravity Science research, and which may be encountered when reviewing references cited in.

The Al-6wt[%]Cu alloy was directionally solidified and dendritic microstructure, solidification thermal variables, i.e., tip growth rate (VL), cooling rate (TR) and temperature gradient ahead of. A new directional solidification technique is presented.

• The SSC method employs conduction to dissipate heat and does not withdraw the cast. • The cooling efficiency is improved substantially. • The axial temperature gradient and the cooling rate also increase much. • The heat insulation of the hot and cool zones is by: 1. Title: Directionally Solidified Materials for High Temperature Service Volume of Book (Metals Society) Volume of Book / Metals Society Volume of Institute of Metals, Book Predictive and Quantitative Metallurgy Series.

Influence of unidirectional solidification in Bridgman furnace on the mechanical behavior () The next sample (sample 1 from Fig. 3b) has been obtained by melting the aluminum and raising the temperature up to K (°C), maintaining the melt at this temperature for 64 minutes, cooling from K (°C) to K (°C).

Polymer Furnace Temperature Gradient Controllable Temperature Gradient Furnace These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm by: The innovation of this program is the use of advanced techniques for heat containment and high temperature optical materials to build a transparent furnace rated at °C or higher.

Advanced high temperature radiation containment methods, elimination of convection heat transfer, high temperature transparent materials, and improved transparent. advanced automated directional solidification furnace: AAE: abort advisory equipment: AAE: aerospace auxiliary equipment: AAE: American Association of Engineers: AAFE: advanced applications flight equipment: AAIR: advanced atmospheric sounder and imaging radiometer: AAMP: advanced architecture microprocessor: AAMRAM: air-to-air medium-range.

Investigation of Temperature and Flow Fields in an Alternative Design of Industrial Cracking Furnaces Using CFD Iranian Journal of Chemical Engineering, Vol.7, No.3 63 from the hot flue gases toward the walls and tubes.

In addition, it was approved that thermal NO formation is by far the most important mechanism in the NOx chemistry [3]. Directional Solidification System (DSS) is the commonly used casting station in the solar industry. In order to better understand the casting process, we carried out global simulations of heat transfer to investigate effect of argon gas flow on the thermal field in a directional solidification system for multi-crystalline silicon (mc-Si).

The effect of argon gas flow on the global heat Author: Xiang Rong Ma, Wu Zan, Xin Liang Zhang. The Worldwide Leader in Noncontact Temperature Measurement.

ATMOSPHERIC FURNACES – PRODUCT TEMPERATURE IS CRITICAL. By Vern Lappe, Vice President, Technical Services, Ircon®, Inc. Heat-treating of metal parts in an atmospheric furnace is a very common practice.

One such furnace is called a Mesh Belt Furnace, in which the parts are heated in an. Full text of "NASA Technical Reports Server (NTRS) The Microgravity Research Experiments (MICREX) Data Base" See other formats.

When g of blast furnace slag was melted under a N 2 gas atmosphere in a small furnace and cooled in an air atmosphere, the pores which formed were similar to those of ordinary air-cooled blast furnace slag cooled at 2 K/min or less.

21) To adjust porosity to 10% or less, the average cooling rate in the slope test must be K/min or more Cited by: 1. Evaluation of a flexible wall testing technique to minimize wall interferences in the NASA Langley m Transonic Cryogenic Tunnel Experimental ground-based Bridgman CdTe growth in NASA's advanced automated directional solidification furnace.

G. BOSTRUP, J. VIOLA, E Increasing the frequency response of constant temperature hot-wire.Continuous temperature measurements in the casting were monitored during solidification through the output of a bank of fine type K thermocouples sheathed in mm steel tubes and positioned at 5, 10, 15, 30, 50 and 70 mm from the chill.The primary motivation for characterizing arc motion and distribution inside a VAR furnace is to identify and then eventually maintain a desired spatial energy profile so as to ensure a high quality ingot.

Currently, there is not a commercially available measurement system capable of.