Swelling of Composite Laminates / HT. Hahn, RY. Kim
- Conference Author:
- Advanced Composite Materials¿̐ưEnvironmental Effects (1977 : Dayton, Ohio)
- Physical Description:
- 1 online resource (23 pages) : illustrations, figures, tables
- Additional Creators:
- Hahn, HT., Kim, RY., American Society for Testing and Materials, and ASTM International
- Restrictions on Access:
- Subscription required for access to full text. and License restrictions may limit access.
- The swelling behavior of a graphite/epoxy (AS/3501-5) is shown to be described by a model which is based on the assumption that the swelling is negligible until the moisture concentration reaches a threshold value and then increases linearly thereafter. The model also provides a means of measuring the volume fraction of voids. The analytical results, which take into account the curing stresses, are compared with the experimental data for the transverse and thickness strains of symmetric laminates as well as for the warpage of unsymmetric laminates. The initial absorption in virgin specimens facilitates the subsequent diffusion, and the residual stresses appear to be responsible for the absorption being slower than the desorption during the early stage of moisture conditioning. Warpage of unsymmetric laminates is discussed in light of the cracks found in constituent plies. Finally derived is a temperature-relative humidity relationship which renders the graphite/epoxy composite laminates free of residual stresses.
- Dates of Publication and/or Sequential Designation:
- Volume 1978, Issue 658 (January 1978)
- 9780803147270 (e-ISBN), 9780803102743, and 0803102747
- Digital File Characteristics:
- text file PDF
- Bibliography Note:
- Includes bibliographical references 11.
- Other Forms:
- Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription., Full text article also available for purchase., and Also available in PDF edition.
- Reproduction Note:
- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1978. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
- Technical Details:
- Mode of access: World Wide Web.
- Source of Acquisition:
- ASTM International PDF Purchase price USD25.
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