Fracture Surfaces of Irradiated Composites / SM. Milkovich, GF. Sykes, CT. Herakovich
- Conference Author:
- Fractography of Modern Engineering Materials: Composites and Metals (1985 : Nashville, Tennessee)
- Physical Description:
- 1 online resource (21 pages) : illustrations, figures, tables
- Additional Creators:
- Herakovich, CT.
American Society for Testing and Materials
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- Electron microscopy was used to analyze the fracture surfaces of T300/934 graphite/epoxy, unidirectional, off-axis tensile coupons which were subjected to 1.0 MeV electron radiation at a rate of 5.0 ¿̐ư 107 rad/h for a total dose of 1.0 ¿̐ư 1010 rad. Fracture surfaces from irradiated and nonirradiated specimens tested at 116 K (¿̐ư250¿̐ưF), room temperature, and 394 K (+250¿̐ưF) were analyzed to assess the influence of radiation and temperature on the mode of failure and variations in constituent material as a function of environmental exposure. Micrographs of fracture surfaces indicate that irradiated specimens are more brittle than nonirradiated specimens at low temperatures. However, at elevated temperatures the irradiated specimens exhibit significantly more plasticity than nonirradiated specimens. The increased plasticity in irradiated specimens tested at elevated temperature is much more evident in 10¿̐ư offaxis specimens. This is the result of the high shear stresses in these specimens. The same high degree of plasticity is not observed in the 90¿̐ư specimens which fail at a much lower ultimate strain. Little difference in fracture surfaces and material behavior for irradiated and nonirradiated specimens is noted for room temperature specimens. The analysis of the photomicrographs is shown to correspond well with mechanical behavior of the specimen.
- Dates of Publication and/or Sequential Designation:
- Volume 1987, Issue 948 (January 1987)
- 9780803150119 (e-ISBN)
- Digital File Characteristics:
- text file PDF
- Bibliography Note:
- Includes bibliographical references 9.
- Other Forms:
- Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
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- Reproduction Note:
- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 1987. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
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- Mode of access: World Wide Web.
- Source of Acquisition:
- ASTM International PDF Purchase price USD25.
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