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    ASTM F520 - 21

    Standard Test Method for Environmental Resistance of Aerospace Transparencies to Artificially Induced Exposures

    Active Standard ASTM F520 | Developed by Subcommittee: F07.08

    Book of Standards Volume: 15.03

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    Significance and Use

    4.1 This test method, when applied to aerospace transparencies of either monolithic glass/plastic or laminated combinations, is a measure of the ability of the transparency to withstand the effects of artificially induced environments. The test applies to configurations employing electrically conductive coatings, and also to uncoated materials.

    4.2 The resistance of the transparent enclosure to environmental effects may vary appreciably depending on the size, geometry, material of construction, coating integrity, coating density, and other factors.

    1. Scope

    1.1 This test method covers determination of the effects of exposure to thermal shock, condensing humidity, and simulated weather on aerospace transparent enclosures.

    1.2 This test method is not recommended for quality control, nor is it intended to provide a correlation to actual service life.

    1.3 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.3.1 Exceptions—Certain inch-pound units are furnished in parentheses (not mandatory) and certain temperatures in Fahrenheit associated with other standards are also furnished.

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1003 Test Method for Haze and Luminous Transmittance of Transparent Plastics

    F319 Practice for Polarized Light Detection of Flaws in Aerospace Transparency Heating Elements

    F521 Test Methods for Bond Integrity of Transparent Laminates

    G53 Practice for Operating Light-and Water-Exposure Apparatus (Fluorescent UV-Condensation Type) for Exposure of Nonmetallic Materials

    G154 Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Nonmetallic Materials

    ICS Code

    ICS Number Code 49.045 (Structure and structure elements)

    UNSPSC Code

    UNSPSC Code 25200000(Aerospace systems and components and equipment)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/F0520-21

    Citation Format

    ASTM F520-21, Standard Test Method for Environmental Resistance of Aerospace Transparencies to Artificially Induced Exposures, ASTM International, West Conshohocken, PA, 2021, www.astm.org

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