Effect of state of stress on compression failure in carbon/epoxy laminates

Journal Article · Sat Jul 01 04:00:00 EDT 1995 · Journal of Engineering Materials and Technology

DOI:https://doi.org/10.1115/1.2804550· OSTI ID:94430

Jee, Y J; Swanson, S R ^[1]

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1. Univ. of Utah, Salt Lake City, UT (United States). Dept. of Mechanical Engineering

Compression loadings in thick composites can in some cases lead to three-dimensional states of stress with a compressive mean stress. A model is developed in the present work that attempts to incorporate this compressive mean stress into a prediction for compression strength of carbon/epoxy fiber composites. The model assumes that the fibers have an initial misalignment, and that composite failure occurs when the fiber-matrix bond strength is exceeded. Literature values for the effect of pressure on bond strength are included. Comparisons with experimental data support the predicted increase in compression strength with pressure.

• Sponsoring Organization: USDOE
• OSTI ID: 94430
• Journal Information: Journal of Engineering Materials and Technology, Journal Name: Journal of Engineering Materials and Technology Journal Issue: 3 Vol. 117; ISSN 0094-4289; ISSN JEMTA8
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBON FIBERS
COMPARATIVE EVALUATIONS
COMPOSITE MATERIALS
COMPRESSION STRENGTH
EPOXIDES
EXPERIMENTAL DATA
MATHEMATICAL MODELS
PRESSURE DEPENDENCE
THEORETICAL DATA
USES