In particular, the exact degree of deterioration and the heterogeneous nature of the corrosion create uncertainty in identifying material properties. ![]() Although finite element analysis is commonly used for structural analysis in many fields of engineering, its application to a historical structure such as the H.L. Data for the numerical model was obtained from archaeological documentation, as well as analytical data from non-destructive evaluation and metallurgical studies. In response, project scientists have developed a finite element numerical model of the hull in its current state in an attempt to answer these questions. This new course of action has raised a number of important questions regarding the submarine’s structural integrity. Hunley submarine (1864) have now reached a point that requires mechanical rotation of the vessel’s hull. It is hoped that this study will both illustrate the problems associated with recording maritime artifacts and suggest further avenues for research and the development of strategies useful for better data collection.Ĭonservation efforts for the 40-foot-long H.L. Moreover, we intend to address the challenges of using the 3D data to reconstruct the submarine into an accurate, color 3D model. In particular, we would like to present a brief study of the effectiveness of optical scanning to record surface details, including issues of reflectivity, color, and surface darkness. Hunley, and highlight some of the specific problems and challenges encountered when employing this technology on maritime archaeological material. This paper will discuss the use of structured-light scanning on the H.L. Hunley submarine itself, as well as other artifacts kept in a wet condition, presented the team with some unique difficulties in terms of three-dimensional documentation. Using structured-light technology on the H.L. However, maritime artifacts, or artifacts from a marine environment, are necessarily stored in water or other aqueous solutions prior to completing the conservation process. High resolution 3D surface topography and integrated photographic data were considered equally necessary, suggesting an optical-based scanning system. The choice of this particular system was determined by the interests of the archaeological team and the particular research goals of the project. The second half of the exhibit focuses on the raising of the Hunley and its conservation since then, including a scaled section of the truss that lifted the vessel out of the water, a kiosk system to display the research behind discovering the crew’s identities, a lift simulation to bring the vessel out of water, and a large vitrine to house clay reproductions of the crew members.In 2008, the Warren Lasch Conservation Center acquired a Breuckmann OptoTOP-HE structured-light scanning system to begin the 3D documentation of the American Civil War submarine H.L. A custom-made crew bench behind a large crank invites them to sit and become the last Hunley crew, re-living the Final Mission through a 6 minute interactive animation. ![]() The exhibit graphics and materials contribute to the “look and feel” as the story of the Civil War and of the Hunley is told through timelines, memorabilia, and imagery.Īfter learning a little more about the sub, visitors are led into a dark theater room. When a visitor enters into the museum, they enter into pre-Civil War Charleston. Our goal was to tell the history and context surrounding the Hunley, as well as educate visitors on the ground-breaking conservation work that has been developed right on site! Collaborating closely with the Friends of the Hunley team, we designed, fabricated, and installed this educational and interactive exhibit space. Scientists and conservators have worked for fifteen years trying to solve the mystery of the Hunley. The Center is a large warehouse equipped with a special tank for the vessel and a conservation lab. ![]() Since then, the Hunley has been excavated and is in the process of being conserved in the Warren Lasch Conservation Center in North Charleston. The sub was discovered in 1995 - and later raised in 2000. During the Civil War, the Hunley became the first ever combat submarine to sink an enemy ship! It mysteriously sunk and was lost 4 miles off the coast of Charleston.
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