The Effect of Prestrain and Water Soak on the Mechanical Performance of Crossplied Composites

The Effect of Prestrain and Water Soak on the Mechanical Performance of Crossplied Composites

The mechanical performance of 0-90 degree crossplied glass-epoxy laminates is evaluated under static tensile loading along the longitudinal direction. The effects of both prestraining and water soaking are considered. Generally, the stress and strain associated with initial cracking increase with pr...

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Bibliographische Detailangaben
Hauptverfasser: Michno, Jr , M J, Lavengood, R E
Format: Report
Sprache:eng
Schlagworte:
COMPOSITE MATERIALS
EPOXY COMPOUNDS
EPOXY RESINS
FIBERGLASS
GLASS REINFORCED PLASTICS
LAMINATES
Laminates and Composite Materials
MECHANICAL PROPERTIES
ORIENTED FIBER COMPOSITES
POLYMERS
STRESSES
TENSILE PROPERTIES
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Beschreibung
Zusammenfassung:The mechanical performance of 0-90 degree crossplied glass-epoxy laminates is evaluated under static tensile loading along the longitudinal direction. The effects of both prestraining and water soaking are considered. Generally, the stress and strain associated with initial cracking increase with prestrain even in the presence of water. The ultimate stress and strain continuously decrease. However, under the most adverse conditions considered (greatest prestrain and water soak) this decrease is less than 20 percent. It is concluded that a reasonable static design limit stress would be 2/3 the ultimate tensile stress. Report on Monsanto/Washington Univ., ONR/ARPA Association project development of High Performance Composites. Spnsored in ppart by DARPA.