Testing and Analysis of Hybrid Composite/Metal Connections and Hull Section for the MACH Project
MAINE UNIV AT ORONO DEPT OF MECHANICAL ENGINEERING
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This report summarizes the development, testing and analysis of hybrid compositemetal connections and hybrid structural systems under the Modular Advanced Composite Hullform MACH project. The MACH project, funded by the Office of Naval Research, is part of a joint effort between the University of Maine, Navatek of Honolulu, HI, and Applied Thermal Sciences ATS of Sanford, Maine, and is performed in conjunction with the Naval Surface Warfare Center at Carderock, MD NSWCCD. The primary motivation for the work summarized herein is to provide alternatives to conventional hull construction techniques and conventional hull forms by using modular hybrid construction methods. Included is a description of tests performed on sub-scale hybrid bolted connections, where the objective was to develop watertight connections for removable panels. An experimental study was conducted to quantify the performance of numerous hybrid joints with various geometries, loaded in flexure. The test results showed that for resisting bending loads, joints with doubler plates can be made stronger and rotationally stiffer than standard bolted joints, while also mitigating opening of the joint, thereby improving the ability to seal the connection for watertight integrity.
- Marine Engineering
- Structural Engineering and Building Technology