R&D Deep Dive Webinar Series
The U.S. Department of Energy (DOE) Water Power Technologies Office (WPTO) is hosting a series of R&D Deep Dive webinars to share updates on tools, analysis, and emerging technologies to advance marine energy as well as next generation hydropower and pumped storage systems.
These webinars will feature WPTO technology managers, National Laboratory research experts, and other partners, and will highlight WPTO's research and development efforts for the hydropower and marine energy industries. These webinars are an opportunity for stakeholders to provide feedback on tool developments, learn about the latest water power research findings, and get trained up on new resources available to support water power technology development. Each webinar presentation will close with a Q&A.
Webinar #1 - Friday, March 19, 2021 | 1-2 ET
Marine hydrokinetic (MHK) devices for renewable energy power generation are fully or partially immersed in seawater while in service. MHK devices sometimes are made of composites and a variety of alloys. The composite type used is sometimes carbon fiber reinforced polymer (CFRP) composites, other times fiber glass reinforced polymer (GFRP) composites are used. In some cases, the composites are fastened using metallic hardware. The fastened composites can cause tight occluded regions that later could become crevice corrosion on the fastened metal regardless of the type of composite. A modified crevice former was used to investigate crevice corrosion for fastened samples immersed in seawater using CFRP/hybrid composite plates. Three alloys were investigated: 316 stainless steel, monel and Titanium alloy. Selected samples were removed for visual examination and dis-assembled after more than 270 days (up to 810 days). Crevice corrosion and pitting corrosion was found on the stainless steel and monel hardware, and corrosion extent increased with time.
Webinar Recording: