The Effect of Prestrain and Water Soak on the Mechanical Performance of Crossplied Composites
MONSANTO RESEARCH CORP ST LOUIS MO
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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 23 the ultimate tensile stress.
- Laminates and Composite Materials