September 2009 Issue
September 2009
Features
Featured articles from the September 2009 issue of CompositesWorld
Gearing up for the new economic normal
In late July, as my family and I raced home from our vacation along Interstate 80 in northern Nevada, we found ourselves quickly overtaking a large flatbed tractor trailer. Strapped onto the bed and covered with a massive tarp was a very large … something, about 15 ft long and 8 ft in diameter.
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Mixed-mode fracture toughness of composites
During the 1970s, fracture toughness testing of composite materials developed a very poor reputation, primarily due to failed attempts to directly adopt metals theory and corresponding test methods. However, the basic principles of fracture mechanics remained valid.
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Resins for the Hot Zone, Part II: BMIs, CEs, benzoxazines and phthalonitriles
Next-generation aerospace programs demand higher temperatures for structural and hot-section components, fostering advances in thermoset resin chemistry.
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