Evaluating Shrinkage of Wood Propellers in a High-temperature Environment - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Evaluating Shrinkage of Wood Propellers in a High-temperature Environment write by Richard D. Bergman. This book was released on 2008. Evaluating Shrinkage of Wood Propellers in a High-temperature Environment available in PDF, EPUB and Kindle. Minimizing wood shrinkage is a priority for many wood products in use, particularly engineered products manufactured to close tolerances, such as wood propellers for unmanned surveillance aircraft used in military operations. Those currently in service in the Middle East are experiencing performance problems as a consequence of wood shrinking during long-term storage at low equilibrium moisture content conditions prior to installation. To evaluate the extent of shrinkage, seven sugar maple (Acer saccharum) veneer propellers were dried from 11% to 3% moisture content in a controlled environment of 150°F (65°C) for 3 days. Two of these wood propellers were encased in polyethylene bags. Results showed 5 to 20 times more shrinkage for the thickness of the propeller hub and the hub face perpendicular to the propeller blades (across the grain), respectively, compared with the hub face parallel to the blades (along the grain). Two hubs, coated with aluminum oxide paint, showed dimensional changes similar to those observed for uncoated hubs. For the two wood propellers encased in polyethylene bags, moisture loss was slowed during the course of the experiment by roughly 46%. Wrapping the wood propellers prior to shipping would slow moisture desorption, thereby minimizing shrinkage during short-term storage. Processing the propellers at a lower equilibrium moisture content would minimize shrinkage during long-term storage.
Research Note FPL.
Research Note FPL. - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Research Note FPL. write by . This book was released on 2006. Research Note FPL. available in PDF, EPUB and Kindle.
Evaluating Shrinkage of Wood Propellers in a High-temperature Environment
Evaluating Shrinkage of Wood Propellers in a High-temperature Environment - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Evaluating Shrinkage of Wood Propellers in a High-temperature Environment write by Richard D. Bergman. This book was released on 2008. Evaluating Shrinkage of Wood Propellers in a High-temperature Environment available in PDF, EPUB and Kindle. Minimizing wood shrinkage is a priority for many wood products in use, particularly engineered products manufactured to close tolerances, such as wood propellers for unmanned surveillance aircraft used in military operations. Those currently in service in the Middle East are experiencing performance problems as a consequence of wood shrinking during long-term storage at low equilibrium moisture content conditions prior to installation. To evaluate the extent of shrinkage, seven sugar maple (Acer saccharum) veneer propellers were dried from 11% to 3% moisture content in a controlled environment of 150°F (65°C) for 3 days. Two of these wood propellers were encased in polyethylene bags. Results showed 5 to 20 times more shrinkage for the thickness of the propeller hub and the hub face perpendicular to the propeller blades (across the grain), respectively, compared with the hub face parallel to the blades (along the grain). Two hubs, coated with aluminum oxide paint, showed dimensional changes similar to those observed for uncoated hubs. For the two wood propellers encased in polyethylene bags, moisture loss was slowed during the course of the experiment by roughly 46%. Wrapping the wood propellers prior to shipping would slow moisture desorption, thereby minimizing shrinkage during short-term storage. Processing the propellers at a lower equilibrium moisture content would minimize shrinkage during long-term storage.
InCIEC 2015
InCIEC 2015 - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook InCIEC 2015 write by Marina Yusoff. This book was released on 2016-06-18. InCIEC 2015 available in PDF, EPUB and Kindle. The special focus of these proceedings is on the areas of infrastructure engineering and sustainability management. They provide detailed information on innovative research developments in construction materials and structures, in addition to a compilation of interdisciplinary findings combining nano-materials and engineering. The coverage of cutting-edge infrastructure and sustainability issues in engineering includes earthquakes, bioremediation, synergistic management, timber engineering, flood management and intelligent transport systems.
Long-term Performance and Durability of Masonry Structures
Long-term Performance and Durability of Masonry Structures - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Long-term Performance and Durability of Masonry Structures write by Bahman Ghiassi. This book was released on 2018-11-27. Long-term Performance and Durability of Masonry Structures available in PDF, EPUB and Kindle. Long-Term Performance and Durability of Masonry Structures: Degradation Mechanisms, Health Monitoring and Service Life Design focuses on the long-term performance of masonry and historical structures. The book covers a wide range of related topics, including degradation mechanisms in different masonry types, structural health monitoring techniques, and long-term performance and service life design approaches. Each chapter reflects recent findings and the state-of-the-art, providing practical guidelines. Key topics covered include the theoretical background, transport properties, testing and modeling, protective measures and standards and codes. The book's focus is on individual construction materials, the composite system and structural performance. - Covers all issues related to durability, including degradation mechanisms, testing and design, monitoring and service life design - Focuses on different masonry construction types - Presents a 'one-stop' reference for advanced postgraduate courses that focuses on the durability of masonry and historical constructions
