ASTM F790-23
(Guide)Standard Guide for Testing Materials for Aerospace Plastic Transparent Enclosures
Standard Guide for Testing Materials for Aerospace Plastic Transparent Enclosures
SIGNIFICANCE AND USE
3.1 This guide is intended for use by material suppliers, aircraft transparent enclosure fabricators, air-frame manufacturers, government agencies, and others that may become involved in the testing of transparency components. These test methods provide data on both individual materials and material combinations commonly utilized in the fabrications of aerospace transparent enclosures comprised of monolithic plastic, coated monolithic plastic or laminated constructions containing plastics.
3.2 Primary properties and their long term stability are critical to the performance of aerospace transparent enclosures. Property measurement tests define as-manufactured material properties of these materials. Aging procedures provide for exposure of parts or representative sections to environments that induce changes in material properties as determined in property measurement tests. Property measurement tests performed before and after aging exposure provide a means of estimating the potential usable life span of a transparency or to compare the durability of one material with another.
3.3 When employing these test methods for comparison of materials for weathering effects the user should be aware that the many factors influencing degradation due to weathering vary from one location to another. For direct weathering comparisons, all material(s) shall undergo exposure conditions and property measurements testing at the same time.
3.4 The test methods listed include those considered critical to the performance of aircraft transparent enclosures. Other test methods to evaluate materials shall also be performed where necessary. Additional test methods are in preparation and will be incorporated. The user is advised to employ the latest revision of any test method.
3.5 The dominant component of all transparent enclosures is one, or more, rigid transparent sheet(s). The sheet(s) must permit the necessary visibility while providing structural integrity and protecting the ...
SCOPE
1.1 This guide is intended to summarize the standard test methods available on individual and composite materials utilized in fabrication of aerospace plastic transparent enclosures. As such, it is intended to specifically include transparent thermoplastics, transparent elastomers, and reinforced plastics, whether thermoplastic or thermosetting.
1.2 This guide is intended as an aid in the search for test methods pertinent to Aerospace Plastic Transparent Enclosures. It should be understood that all methods listed may not apply to all enclosures.
1.3 The standards included refer to the properties or aspects listed in Table 1. The properties or aspects are listed in alphabetical order and the descriptions used are intended to facilitate the search.
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.
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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.
Designation: F790 − 23
Standard Guide for
Testing Materials for Aerospace Plastic Transparent
1
Enclosures
This standard is issued under the fixed designation F790; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D149 Test Method for Dielectric Breakdown Voltage and
Dielectric Strength of Solid Electrical Insulating Materials
1.1 This guide is intended to summarize the standard test
at Commercial Power Frequencies
methods available on individual and composite materials
D150 Test Methods for AC Loss Characteristics and Permit-
utilized in fabrication of aerospace plastic transparent enclo-
tivity (Dielectric Constant) of Solid Electrical Insulation
sures. As such, it is intended to specifically include transparent
D256 Test Methods for Determining the Izod Pendulum
thermoplastics, transparent elastomers, and reinforced plastics,
Impact Resistance of Plastics
whether thermoplastic or thermosetting.
D257 Test Methods for DC Resistance or Conductance of
1.2 This guide is intended as an aid in the search for test
Insulating Materials
methods pertinent to Aerospace Plastic Transparent Enclo-
D412 Test Methods for Vulcanized Rubber and Thermoplas-
sures. It should be understood that all methods listed may not
tic Elastomers—Tension
apply to all enclosures.
D542 Test Method for Index of Refraction of Transparent
1.3 The standards included refer to the properties or aspects
Organic Plastics
listed in Table 1. The properties or aspects are listed in
D543 Practices for Evaluating the Resistance of Plastics to
alphabetical order and the descriptions used are intended to
Chemical Reagents
facilitate the search.
D570 Test Method for Water Absorption of Plastics
1.4 This standard does not purport to address all of the
D624 Test Method for Tear Strength of Conventional Vul-
safety concerns, if any, associated with its use. It is the
canized Rubber and Thermoplastic Elastomers
responsibility of the user of this standard to establish appro-
D638 Test Method for Tensile Properties of Plastics
priate safety, health, and environmental practices and deter-
D695 Test Method for Compressive Properties of Rigid
mine the applicability of regulatory limitations prior to use.
Plastics
1.5 This international standard was developed in accor-
D696 Test Method for Coefficient of Linear Thermal Expan-
dance with internationally recognized principles on standard-
sion of Plastics Between −30°C and 30°C with a Vitreous
ization established in the Decision on Principles for the
Silica Dilatometer
Development of International Standards, Guides and Recom-
D746 Test Method for Brittleness Temperature of Plastics
mendations issued by the World Trade Organization Technical
and Elastomers by Impact
Barriers to Trade (TBT) Committee.
D785 Test Method for Rockwell Hardness of Plastics and
Electrical Insulating Materials
2. Referenced Documents
D790 Test Methods for Flexural Properties of Unreinforced
2
2.1 ASTM Standards:
and Reinforced Plastics and Electrical Insulating Materi-
C117 Test Method for Materials Finer than 75-µm (No. 200)
als
Sieve in Mineral Aggregates by Washing
D792 Test Methods for Density and Specific Gravity (Rela-
tive Density) of Plastics by Displacement
D953 Test Method for Pin-Bearing Strength of Plastics
1
D1003 Test Method for Haze and Luminous Transmittance
This guide is under the jurisdiction of ASTM Committee F07 on Aerospace and
Aircraft and is the direct responsibility of F07.08 on Transparent Enclosures and
of Transparent Plastics
Materials.
D1004 Test Method for Tear Resistance (Graves Tear) of
Current edition approved Jan. 1, 2023. Published February 2023. Originally
Plastic Film and Sheeting
approved in 1988. Last previous edition approved in 2018 as F790 – 18. DOI:
10.1520/F0790-23.
D1044 Test Method for Resistance of Transparent Plastics to
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Surface Abrasion by the Taber Abraser
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
D1238 Test Method for Melt Flow Rates of Thermoplastics
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. by Extrusion Plastometer
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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F790 − 23
D1499 Practice for Filtered Open-Flame Carbon-Arc Expo- F521 T
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F790 − 18 F790 − 23
Standard Guide for
Testing Materials for Aerospace Plastic Transparent
1
Enclosures
This standard is issued under the fixed designation F790; the number immediately following the designation indicates the year of original
adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This guide is intended to summarize the standard test methods available on individual and composite materials utilized in
fabrication of aerospace plastic transparent enclosures. As such, it is intended to specifically include transparent thermoplastics,
transparent elastomers, and reinforced plastics, whether thermoplastic or thermosetting.
1.2 This guide is intended as an aid in the search for test methods pertinent to Aerospace Plastic Transparent Enclosures. It should
be understood that all methods listed may not apply to all enclosures.
1.3 The standards included refer to the properties or aspects listed in Table 1.Table 1. The properties or aspects are listed in
alphabetical order and the descriptions used are intended to facilitate the search.
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
2
2.1 ASTM Standards:
C117 Test Method for Materials Finer than 75-µm (No. 200) Sieve in Mineral Aggregates by Washing
D149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at
Commercial Power Frequencies
D150 Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation
D256 Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics
D257 Test Methods for DC Resistance or Conductance of Insulating Materials
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—Tension
D542 Test Method for Index of Refraction of Transparent Organic Plastics
D543 Practices for Evaluating the Resistance of Plastics to Chemical Reagents
D570 Test Method for Water Absorption of Plastics
1
This guide is under the jurisdiction of ASTM Committee F07 on Aerospace and Aircraft and is the direct responsibility of F07.08 on Transparent Enclosures and
Materials.
Current edition approved June 1, 2018Jan. 1, 2023. Published June 2018February 2023. Originally approved in 1988. Last previous edition approved in 20132018 as
F790 – 08F790 – 18.(2013). DOI: 10.1520/F0790-18.10.1520/F0790-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
F790 − 23
TABLE 1 Property or Aspects of Aerospace Plastic Transparent Enclosures
Property or Aspect Test Method
Abrasion Resistance D1044
Abrasion Resistance—Oscillating Sand F735
Abrasion Testing—Sizing Sand for C117
Accelerated Weathering Combined with Biaxial Stress F1164
Bearing Strength D953
Bird Impact Resistance F330
Bond Integrity F521
Brittleness Temperature—By Impact D746
Chemical Resistance D543
Coefficient of Linear Thermal Expansion D696
Compressive Properties D695
Dust Erosion F1864
Electrical Insulating Material—DC Resistance or Conductance D257
Electrical Insulating Material—Dielectric Breakdown Voltage D149
Electrical Insulating Material—Dielectric Constant D150
Electrical Insulating Material—Flexural Properties D790
Electrical Insulating Material—Impact Resistance D256
Electrical Insulating Material—Rockwell Hardness D785
Environmental Resistance F520
Exposure Apparatus Operation—Carbon ARC Type D1499
Exposure Apparatus Operation—Fluorescent UV Type G154
Exposure Apparatus Operation—Xen
...
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