Reducing tensile stress concentrations at geometric discontinuities in composites by altering the neighboring structural compliance, and the possible influence on strength, are investigated. Compared with the reduction in stress concentration, results show that increases in strength when introducing auxiliary holes can be appreciable in highly orthotropic natural composites such as wood but minimal in man-made aerospace-type structural composites. Although stress concentration might be a measure of structural integrity, assuming that a specific value of a stress concentration factor necessarily leads to failure can be erroneous. A scheme for optimizing size and location of auxiliary holes to minimize stress concentrations is included.
A satellite that has an all-composite structure, STSAT-3(science and technology satellite), was initially developed in Korea. Partially use of advanced composites in space applications such as solar panel is well developed, however the application of an all-composite satellite bus has never been achieved in Korea. This study emphasizes the application of composite technology to the design and fabrication of an all-composite spacecraft bus for small-class satellite STSAT-3. Moreover its structure design concept is totally different from the one that was used in the previous satellites developed in Korea.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.