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ASTM F790-08(2013)

(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 may 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) should 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 may also be performed. 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 aircraft inte...
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.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  
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  
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—Xenon ARC Type  
D2565  
Flow Rate  
D1238  
Glass Transition Temperature  
E1640  
Hail Impact Resistanc...

General Information

Status
Historical
Publication Date
30-Nov-2013
ICS
49.045 - Structure and structure elements
Technical Committee
F07 - Aerospace and Aircraft
Drafting Committee
F07.08 - Transparent Enclosures and Materials
Current Stage
Ref Project

Relations

Replaces
ASTM F790-08 - Standard Guide for Testing Materials for Aerospace Plastic Transparent Enclosures
Effective Date
01-Dec-2013

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ASTM F790-08(2013) - Standard Guide for Testing Materials for Aerospace Plastic Transparent EnclosuresASTM F790-08(2013) - Standard Guide for Testing Materials for Aerospace Plastic Transparent Enclosures
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ASTM F790-08(2013) - Standard Guide for Testing Materials for Aerospace Plastic Transparent Enclosures
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F790 − 08 (Reapproved 2013)
Standard Guide for
Testing Materials for Aerospace Plastic Transparent
Enclosures
ThisstandardisissuedunderthefixeddesignationF790;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D257Test Methods for DC Resistance or Conductance of
Insulating Materials
1.1 This guide is intended to summarize the standard test
D412TestMethodsforVulcanizedRubberandThermoplas-
methods available on individual and composite materials
tic Elastomers—Tension
utilized in fabrication of aerospace plastic transparent enclo-
D542Test Method for Index of Refraction of Transparent
sures.As such, it is intended to specifically include transparent
Organic Plastics
thermoplastics, transparent elastomers, and reinforced plastics,
D543Practices for Evaluating the Resistance of Plastics to
whether thermoplastic or thermosetting.
Chemical Reagents
1.2 This guide is intended as an aid in the search for test
D570Test Method for Water Absorption of Plastics
methods pertinent to Aerospace Plastic Transparent Enclo-
D624Test Method for Tear Strength of Conventional Vul-
sures. It should be understood that all methods listed may not
canized Rubber and Thermoplastic Elastomers
apply to all enclosures.
D638Test Method for Tensile Properties of Plastics
1.3 The standards included refer to the properties or aspects
D695Test Method for Compressive Properties of Rigid
listed in Table 1. The properties or aspects are listed in
Plastics
alphabetical order and the descriptions used are intended to
D696TestMethodforCoefficientofLinearThermalExpan-
facilitate the search.
sion of Plastics Between −30°C and 30°C with a Vitreous
1.4 This standard does not purport to address all of the
Silica Dilatometer
safety concerns, if any, associated with its use. It is the
D746Test Method for Brittleness Temperature of Plastics
responsibility of the user of this standard to establish appro-
and Elastomers by Impact
priate safety and health practices and determine the applica-
D785Test Method for Rockwell Hardness of Plastics and
bility of regulatory limitations prior to use.
Electrical Insulating Materials
2. Referenced Documents D790Test Methods for Flexural Properties of Unreinforced
and Reinforced Plastics and Electrical Insulating Materi-
2.1 ASTM Standards:
als
C117Test Method for Materials Finer than 75-µm (No. 200)
D792Test Methods for Density and Specific Gravity (Rela-
Sieve in Mineral Aggregates by Washing
tive Density) of Plastics by Displacement
D149Test Method for Dielectric Breakdown Voltage and
DielectricStrengthofSolidElectricalInsulatingMaterials D953Test Method for Bearing Strength of Plastics
at Commercial Power Frequencies D1003Test Method for Haze and Luminous Transmittance
D150Test Methods forAC Loss Characteristics and Permit- of Transparent Plastics
tivity (Dielectric Constant) of Solid Electrical Insulation D1004Test Method for Tear Resistance (Graves Tear) of
D256Test Methods for Determining the Izod Pendulum
Plastic Film and Sheeting
Impact Resistance of Plastics
D1044TestMethodforResistanceofTransparentPlasticsto
Surface Abrasion
D1238Test Method for Melt Flow Rates of Thermoplastics
ThisguideisunderthejurisdictionofASTMCommitteeF07onAerospaceand
Aircraft and is the direct responsibility of F07.08 on Transparent Enclosures and by Extrusion Plastometer
Materials.
D1499Practice for Filtered Open-Flame Carbon-Arc Expo-
Current edition approved Dec. 1, 2013. Published December 2013. Originally
sures of Plastics
approved in 1988. Last previous edition approved in 2008 as F790–08. DOI:
10.1520/F0790-08R13. D1525Test Method for Vicat Softening Temperature of
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Plastics
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
D2240TestMethodforRubberProperty—DurometerHard-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. ness
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F790 − 08 (2013)
TABLE 1 Property or Aspects of Aerospace Plastic Transparent
F319Practice for Polarized Light Detection of Flaws in
Enclosures
Aerospace Transparency Heating Elements
Property or Aspect Test Method
F320Test Method for Hail Impact Resistance of Aerospace
Abrasion Resistance D1044
Transparent Enclosures
Abrasion Resistance—Oscillating Sand F735
F330Test Method for Bird Impact Testing of Aerospace
Abrasion Testing—Sizing Sand for C117
Transparent Enclosures
Bearing Strength D953
Bird Impact Resistance F330
F484Test Method for Stress Crazing of Acrylic Plastics in
Bond Integrity F521
Contact with Liquid or Semi-Liquid Compounds
Brittleness Temperature—By Impact D746
F520Test Method for Environmental Resistance of Aero-
Chemical Resistance D543
Coefficient of Linear Thermal Expansion D696
space Transparencies to Artificially Induced Exposures
Compressive Properties D695
F521Test Methods for Bond Integrity of Transparent Lami-
Electrical Insulating Material—DC Resistance or Conductance D257
Electrical Insulating Material—Dielectric Breakdown Voltage D149 nates
Electrical Insulating Material—Dielectric Constant D150
F548Test Method for Intensity of Scratches on Aerospace
Electrical Insulating Material—Flexural Properties D790
Transparent Plastics
Electrical Insulating Material—Impact Resistance D256
Electrical Insulating Material—Rockwell Hardness D785 F733PracticeforOpticalDistortionandDeviationofTrans-
Environmental Resistance F520
parent Parts Using the Double-Exposure Method
Exposure Apparatus Operation—Carbon ARC Type D1499
F734Test Method for Shear Strength of Fusion Bonded
Exposure Apparatus Operation—Fluorescent UV Type G154
Exposure Apparatus Operation—Xenon ARC Type D2565 Polycarbonate Aerospace Glazing Material
Flow Rate D1238
F735Test Method for Abrasion Resistance of Transparent
Glass Transition Temperature E1640
Plastics and Coatings Using the Oscillating Sand Method
Hail Impact Resistance F320
Hardness—Barcol D2583 F736Test Method for Impact Resistance of Monolithic
Hardness—Durometer D2240
Polycarbonate Sheet by Means of a Falling Weight
Heating Elements—Detection of Flaws F319
F791Test Method for Stress Crazing ofTransparent Plastics
Ignition Loss D2584
Impact Resistance—Falling Weight D5420 F80
...

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