... due to marine environments, high chloride content in the air and use of de-icing salts, alkali-silica reactions (ASR), environmental effects on materials, poor initial design, and poor construction and maintenance, or both. Cracking and spalling of concrete columns is often seen with corrosion...

... glass transition temperature. The energy required to initiate damage was found to decrease with temperature, and this is consistent with a reduction in matrix properties at elevated temperatures. KEYWORDS: polymer composite, environmental effects, dropped weight impact, seawater exposure, impact...

..., environmental effects, dropped weight impact, seawater exposure In Part I of this paper [1], we considered the influence of environment (that is, moisture and temperature) on the impact behavior of several epoxy-based, graphite fiber composites. Damage initiation energy decreased with temperature due to reduced...

... for Strength, Fracture Toughness, and Environmental Effects ,” NASA Report TM-83696, National Aeronautics and Space Administration , Washington, DC, 1984 . Chamis , C. C. , Lark , R. F. , and Sinclair , J. H. , “ Mechanical Property Characterization of Intraply Hybrid Composites ,” NASA...

... be more reliable and reproducible than those obtained by surface gages, dial gages, or extensometers. KEYWORDS. graphite/epoxy composites, environmental effects, moisture content, hygroscopicexpansion, embedded gages, hygrothermal characterization The hygromechanical characterization of composite...

... Aeronautics and Space Administration (NASA) Lewis Research Center. These theories account for environmental effects and are applicable to intraply hybrid composites, interply hybrid composites and combinations of these, as well as conventional laminate analysis. Key features and capabilities of ICAN...