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Simplified composite micromechanics equations for hygral, thermal and mechanical propertiesA unified set of composite micromechanics equations of simple form is summarized and described. This unified set can be used to predict unidirectional composite (ply) geometric, mechanical, thermal and hygral properties using constituent material (fiber/matrix) properties. This unified set also includes approximate equations for predicting (1) moisture absorption; (2) glass transition temperature of wet resins; and (3) hygrothermal degradation effects. Several numerical examples are worked-out to illustrate ease of use and versatility of these equations. These numerical examples also demonstrate the interrelationship of the various factors (geometric to environmental) and help provide insight into composite behavior at the micromechanistic level.
Document ID
Document Type
Conference Paper
Chamis, C. C.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 4, 2013
Publication Date
January 1, 1983
Subject Category
Composite Materials
Report/Patent Number
NAS 1.15:83320
Meeting Information
Meeting: Ann. Conf. of the Society of the Plastics Industry (SPI) Reinforced Plastics/Composites Inst.
Location: Houston, TX
Country: United States
Start Date: February 7, 1983
End Date: February 11, 1983
Accession Number
Funding Number(s)
PROJECT: RTOP 505-32-52
Distribution Limits
Work of the US Gov. Public Use Permitted.
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