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Wednesday, July 22, 2020 | History

3 edition of Effects of water on the strength of Zerodur found in the catalog.

Effects of water on the strength of Zerodur

Effects of water on the strength of Zerodur

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  • 15 Currently reading

Published by George C. Marshall Space Flight Center in [Marshall Space Flight Center, Ala.] .
Written in English

    Subjects:
  • Glass-ceramics.,
  • Optical glass.,
  • Ceramics.,
  • Fracture strength.,
  • Glass.,
  • Mechanical properties.,
  • Nonlinearity.,
  • Residual stress.,
  • Time temperature parameter.,
  • Water.

  • Edition Notes

    StatementD. Tucker and A. Setzer.
    SeriesNASA technical memorandum -- NASA TM-103535., NASA technical memorandum -- 103535.
    ContributionsSetzer, Andrew., George C. Marshall Space Flight Center.
    The Physical Object
    FormatMicroform
    Paginationiv, 5 p.
    ID Numbers
    Open LibraryOL16132993M

    Medical Technology Source Book ď ˇ Summer/Fall Contact name: Vance Moore Phone: URL: BLD Science is an international distributor, supplier and service center for.   Eg.: Zerodur – a glass-ceramic material that consists of 80% crystalline quartz, and the remaining as glassy phase. Sodium-zirconium-phosphate (NZP) have a near-zero thermal expansion coefficient. MAGNETIC PROPERTIES OF NANOMATERIALS: Magnetic nanoparticles are gaining traction as a useful tool in a variety of applications including drug.

    For example, at a temperature of 25 °C, the heat required to raise the temperature of 1 kg of water by 1 K is 4 joules, meaning that the specific heat of water is 4 Jkg −1 K −1. The volumetric heat capacity of a material is the heat capacity of a sample of the substance divided by the volume of the sample. Toughened or tempered glass is a type of safety glass processed by controlled thermal or chemical treatments to increase its strength compared with normal glass. Tempering puts the outer surfaces into compression and the interior into stresses cause the glass, when broken, to crumble into small granular chunks instead of splintering into jagged shards as plate .

    Contact Esme Horn T+44 (0) to book your space TIAMA ZA des Plattes, 1 Chemin des Plattes, Vourles, France Tel +33 (0) 4 37 . A new classification standard is under preparation, which will specify the water resistance of optical glass by the powder method. Glass will be crushed down to about mm grain size. The weight loss after boiling will be used to rank the glass .


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Effects of water on the strength of Zerodur Download PDF EPUB FB2

Get this from a library. Effects of water on the strength of Zerodur. [Dennis Stephen Tucker; Andrew Setzer; George C. Marshall Space Flight Center.]. A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text.

The zinc cyanide material mentioned above exhibits a very large NTE (Chapman et al., ).The mechanism is roughly the same as for the oxides but the fact that the bridging oxygen is replaced by a bridging C–N molecule (Fig. ) amplifies the r recently discovered related material, Ag 3 [Co(CN) 6] exhibits colossal NTE and positive thermal expansion effects.

Sodium silicate is a generic name for chemical compounds with the formula Na 2x Si y O 2y+x or (Na 2 O) x (SiO 2) y, such as sodium metasilicate Na 2 SiO 3, sodium orthosilicate Na 4 SiO 4, and sodium pyrosilicate Na 6 Si 2 O anions are often compounds are generally colorless transparent solids or white powders, and soluble in water in various amounts.

Heat has a number of important effects on plywood. Temperature affects the EMC and the rate of absorption and desorption of water. Temperatures below 90 °C have a limited long-term effect on the mechanical properties of wood.

Very high temperature, however, will weaken the wood. Glass is a non-crystalline, often transparent amorphous solid, that has widespread practical, technological, and decorative use in, for example, window panes, tableware, and is most often formed by rapid cooling of the molten form; some glasses such as volcanic glass are naturally most familiar, and historically the oldest, types of manufactured glass.

Generally strength and modulus go up and down together. Modulus (E) at 25C linearly related to melting temperature (Tm). (Ceramics = GPa, Metals = GPa, Polymers = File Size: KB. As a rule of thumb the average strength of Zerodur® is assumed to be around 10 MPa.

The effects of a year exposure to low earth orbit environment upon the mechanical properties of. 3D Printing Titanium in Aerospace Manufacturing Applications. Titanium superalloys are highly beneficial to the aerospace industry, helping companies to reduce their carbon footprint by making planes more fuel-efficient.

3D printing of components constructed from titanium superalloys has become popular in this sector for its convenience, speed, and production of lightweight.

Optical glass provides a central function in optical systems: the precisely defined refraction of light with the highest throughput. Large parts of the optical industry depend on this key material.

Common issues involved with mounting optical components are discussed, including stress, glass strength, thermal effects, vibration, and errors due to motion.

This handy reference also has a useful collection of material properties for glasses, metals, and adhesives, along with guidelines for tolerancing optics and machined parts.

You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them., Free ebooks since B Supplemental Information on the Underlying Laser Technology APPENDIX B1 BASICS OF SOLID-STATE LASERS Fundamentals of Solid-State Laser Media.

While semiconductors and color centers in crystals are certainly solid-state materials, the term solid-state laser has evolved to cover lasers based on the energy-level transitions of paramagnetic ions (dopants) in a.

An optical fiber (or optical fibre) is a flexible, transparent fiber made of extruded glass or plastic, slightly thicker than a human can function as a waveguide, or “light pipe”, [1] to transmit light between the two ends of the fiber. [2] Power over Fiber (PoF) optic cables can also work to deliver an electric current for low-power electric devices.

[3]. Low-temperature joining of Zerodur and SiO 2 for optical device manufacture Samuel D. Conzone ; Mark J. Davis Proc. SPIEInorganic Optical Materials III, pg (2 November ); doi: / Subsurface damages and surface roughness are two significant parameters which determine the performance of silicon carbide (SiC) ceramics.

Subsurface damages (SSD) induced by conventional polishing could seriously affect the service life of the workpiece. To address this problem, vibration-assisted polishing (VAP) was developed to machine hard and brittle Author: Yan Gu, Yan Zhou, Jieqiong Lin, Allen Yi, Mingshuo Kang, Hao Lu, Zisu Xu.

@article{osti_, title = {Cursory examination of the zeta potential behaviors of two optical materials}, author = {Tesar, A and Oja, T}, abstractNote = {When an oxide surface is placed in water, a difference in potential across the interface occurs due to dipole orientation.

Hydroxyl groups or bound oxygen atoms on the oxide surface will orient adjacent water molecules. Green et al. [21, 22] have studied tensile and bend strength of Zerodur ®-Zerodur ®, Zerodur ®-ULE ® and ULE ®-ULE ® bonds with similar space-based missions in mind.

Van den Ende and Gubbels [17] studied the fracture toughness of bonded SiC-SiC, SiC-Zerodur ®, and Zerodur ® -Zerodur ® parts with a mission like GAIA in by: The effects of environmental exposure on reusable surface insulation for space shuttle / (Washington, D.C.: National Aeronautics and Space Administration ; [Springfield, Va.: For sale by the National Technical Information Service], ), by Philip O.

Ransone, J. Morrison, and Langley Research Center (page images at HathiTrust). The line strength S(T) can be expressed dependent on the line strength S(T ref) for the reference temperature T ref for any temperature T by where Q (T) represents the total internal partition function, E η the lower state energy involved in the transition, and h the Planck and k B the Boltzmann constant.

High strength glass‐ceramics having petalite and lithium silicate structures. US Patent Application Publication / A1. US Patent Application .This comprehensive handbook covers all major aspects of optomechanical engineering - from conceptual design to fabrication and integration of complex optical systems.

The practical information within is ideal for optical and optomechanical engineers and scientists involved in the design, development and integration of modern optical systems for commercial, space, and Cited by: 7.Conference: X-ray induced damage observations in ZERODUR mirrors.

X-ray induced damage observations in ZERODUR mirrors. Full Record; Other Related Research.