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    • StingRAY Structural Optimization Final Technical Report Appendices

    Metadata Updated: August 6, 2025

    The protected data appendices to the public Final Technical Report.

    The overall project objective is to materially decrease the leveled cost of energy (LCOE) of the Columbia Power (CPower) StingRAY utility-scale wave energy converter (WEC). This will be achieved by reducing structural material and manufacturing costs and increasing energy output. In this Project, improving the overall Power-to-Weight ratio (PWR) is accomplished through lowering design margins?allowing for weight reduction and more efficient, cost-effective WEC manufacturing and assembly?and by optimizing mass-related WEC performance parameters, such as center of gravity and system inertia.

    A mixed materials approach to further structural optimization was developed under this Project and validated with extensive laboratory structural testing. This approach substitutes fiber-reinforced plastic (FRP) for steel where appropriate. The benefits of steel are maintained where most useful, for instance at structural joints where the stiffness of steel is required, and the complex geometry is more readily fabricated with steel. However, there are structural spans whose simple shapes are readily fabricated with mandrel-wound FRP and where significant cost and weight savings can be found. An adhesive, double lap shear joint is used to join the FRP and steel subcomponents

    Access & Use Information

    Public: This dataset is intended for public access and use. License: Creative Commons Attribution

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    Dates

    Metadata Created Date August 6, 2025
    Metadata Updated Date August 6, 2025

    Metadata Source

    Harvested from OpenEI data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date August 6, 2025
    Metadata Updated Date August 6, 2025
    Publisher Columbia Power Technologies, Inc.
    Maintainer
    Identifier https://data.openei.org/submissions/8469
    Data First Published 2020-08-05T06:00:00Z
    Data Last Modified 2025-08-05T06:00:02Z
    Public Access Level public
    Bureau Code 019:20
    Metadata Context https://openei.org/data.json
    Metadata Catalog ID https://openei.org/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Data Quality True
    Harvest Object Id 106def2a-34d5-438e-b786-997e3f1fb23e
    Harvest Source Id 7cbf9085-0290-4e9f-bec1-91653baeddfd
    Harvest Source Title OpenEI data.json
    Homepage URL https://mhkdr.openei.org/submissions/352
    License https://creativecommons.org/licenses/by/4.0/
    Old Spatial {"type":"Polygon","coordinates":-180,-83,180,-83,180,83,-180,83,-180,-83}
    Program Code 019:009
    Projectlead Yana Shininger
    Projectnumber EE0006610
    Projecttitle WAVE ENERGY CONVERTER STRUCTURAL OPTIMIZATION THROUGH ENGINEERING AND EXPERIMENTAL ANALYSIS
    Source Datajson Identifier True
    Source Hash d8df64d80ed368343e13949c263104c02aa6501cdcd62e2ce2a9a8119a9c9202
    Source Schema Version 1.1
    Spatial {"type":"Polygon","coordinates":-180,-83,180,-83,180,83,-180,83,-180,-83}

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