NDLI: Hygrothermal properties of composites

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Hygrothermal properties of composites

Content Provider	NASA Technical Reports Server (NTRS)
Author	Arsenovic, Petar
Copyright Year	1996
Description	The testing procedure and acceptance criteria for outgassing selection of materials to be used in spacecraft has been reviewed. Outgassing testing should be conducted according to ASTM Standard E 595-90. In general, materials with CVCM less than or equal to 0.10% and TML less than or equal to 1.00% are acceptable for space applications. Next, test data on several types of graphite-epoxy composite materials are presented over time at various relative humidity levels at room temperature for moisture absorption, and under vacuum at several temperatures for moisture desorption (outgassing). The data can be accurately represented by simple equations which are useful for materials characterization. Finally, a laser dilatometer systems of extremely high sensitivity and accuracy was assembled and used to measure the coefficient of thermal expansion (CTE) of several types of graphite-epoxy structures, culminating in the ability to perform loading and thermal expansion tests on a prototype optical bench.
File Size	1379958
Page Count	26
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19960041513
Archival Resource Key	ark:/13960/t7np70n72
Language	English
Publisher Date	1996-06-01
Access Restriction	Open
Subject Keyword	Composite Materials Spacecraft Construction Materials Acceptability Thermal Expansion Outgassing Hygral Properties Lasers Moisture Content Humidity Graphite-epoxy Composites Strain Distribution Hydrothermal Stress Analysis Composite Structures Technology Utilization Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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