Paul Murdy
YOU?
Author Swipe
View article: Hygrothermal Aging and Thermomechanical Characterization of As-Manufactured Tidal Turbine Blade Composites
Hygrothermal Aging and Thermomechanical Characterization of As-Manufactured Tidal Turbine Blade Composites Open
This study investigates the hygrothermal aging behavior and thermomechanical properties of as-manufactured glass fiber-reinforced epoxy and thermoplastic composite tidal turbine blades. The blades were previously deployed in a marine envir…
View article: Hygrothermal aging and recycling effects on mechanical and thermal properties of recyclable thermoplastic glass fiber composites
Hygrothermal aging and recycling effects on mechanical and thermal properties of recyclable thermoplastic glass fiber composites Open
Glass fiber‐reinforced polymer composites are widely used in marine applications, including renewable energy devices and submarines, due to their strength‐to‐weight ratios and corrosion resistance. As sustainability becomes more important,…
View article: Polymer Additive Manufacturing for Marine Renewable Energy Applications: Best Practices, Research Trends, and Current Challenges
Polymer Additive Manufacturing for Marine Renewable Energy Applications: Best Practices, Research Trends, and Current Challenges Open
Additive manufacturing (AM) is a rapidly growing technology space, not only for prototyping, but is also becoming more feasible at larger scales and increasing component quantities. There are a large variety of AM processes and materials a…
View article: Effects of Coatings on Water Intrusion and Strain Gauge Durability in Submerged Fatigue Conditions: Preprint
Effects of Coatings on Water Intrusion and Strain Gauge Durability in Submerged Fatigue Conditions: Preprint Open
Marine energy structures are typically made using composite materials and are repeatedly loaded by currents and waves. Submersion and repeated loading lead to two environmental effects: moisture intrusion and mechanical fatigue. To underst…
View article: Manufacture and testing of biomass-derivable thermosets for wind blade recycling
Manufacture and testing of biomass-derivable thermosets for wind blade recycling Open
Wind energy is helping to decarbonize the electrical grid, but wind blades are not recyclable, and current end-of-life management strategies are not sustainable. To address the material recyclability challenges in sustainable energy infras…
View article: Submerged Fatigue Testing of Marine Energy Advanced Materials
Submerged Fatigue Testing of Marine Energy Advanced Materials Open
Marine energy structures are typically made of advanced composite materials and are subjected to extreme ocean environments in service. In extreme ocean environments, seawater currents and waves load structures repeatedly, which cause two …
View article: Effects of Strain Gauge Coatings on Water Intrusion in Submerged Composite Coupon Testing
Effects of Strain Gauge Coatings on Water Intrusion in Submerged Composite Coupon Testing Open
Marine energy structures are typically made using composite materials and are repeatedly loaded by currents and waves. Submersion and repeated loading lead to two environmental effects: moisture intrusion and mechanical fatigue. To underst…
View article: TEAMER Technical Support for Aquantis (Materials) (Final Report)
TEAMER Technical Support for Aquantis (Materials) (Final Report) Open
The Aquantis Tidal Power Tug is a unique synthesis of best-available technologies and materials configured as a novel spar vessel to create an optimal platform for tidal stream energy conversion. The Power Tug utilizes an upstream-facing h…
View article: Post-Deployment Characterization of Glass Fiber-Reinforced Thermoset and Thermoplastic Composite Tidal Turbine Blades: Preprint
Post-Deployment Characterization of Glass Fiber-Reinforced Thermoset and Thermoplastic Composite Tidal Turbine Blades: Preprint Open
In 2021, the National Renewable Energy Laboratory (NREL) supported Verdant Power with the most successful tidal energy deployment in U.S. history. Three of their tidal turbines were deployed as part of the Roosevelt Island Tidal Energy pro…
View article: Submerged Fatigue Testing of Marine Energy Advanced Materials: Preprint
Submerged Fatigue Testing of Marine Energy Advanced Materials: Preprint Open
Marine energy structures are typically made of advanced composite materials and are subjected to extreme ocean environments in service. In extreme ocean environments, seawater currents and waves load structures repeatedly, which cause two …
View article: Structural Characterization of Deployed Thermoplastic and Thermoset Composite Tidal Turbine Blades
Structural Characterization of Deployed Thermoplastic and Thermoset Composite Tidal Turbine Blades Open
The National Renewable Energy Laboratory worked with Verdant Power to manufacture, and characterize, novel thermoplastic composite blades on their Gen5d 5 m diameter turbines at the Roosevelt Island Tidal Energy (RITE) site in the East Riv…
View article: Static and Fatigue Characterization of Large Composite T-Bolt Connections in Marine Hygrothermal Environments
Static and Fatigue Characterization of Large Composite T-Bolt Connections in Marine Hygrothermal Environments Open
Fiber-reinforced polymer composites have been highlighted as ideal candidates for structural applications in marine renewable energy devices, such as tidal turbines and wave energy converters. It is well understood that harsh marine enviro…
View article: Synthesis, characterization, and recycling of bio-derivable polyester covalently adaptable networks for industrial composite applications
Synthesis, characterization, and recycling of bio-derivable polyester covalently adaptable networks for industrial composite applications Open
View article: UMERC Materials and Manufacturing Workshop
UMERC Materials and Manufacturing Workshop Open
On October 4, 2023, DOE's Water Power Technology Office (WPTO) hosted a half-day workshop as part of the annual UMERC conference. The workshop brought together universities, industry, DOE offices, and national labs sharing their work, outc…
View article: Additive Manufacturing for Powering the Blue Economy Applications: A Tidal Turbine Blade Case Study
Additive Manufacturing for Powering the Blue Economy Applications: A Tidal Turbine Blade Case Study Open
As the marine renewable energy industry continues to expand, innovation in the manufacturing space must grow accordingly to reduce costs and ensure the economic feasibility of new technologies. Additive manufacturing, more commonly known a…
View article: Design, Manufacture and Testing of an Open-Source Benchmark Composite Hydrokinetic Turbine Blade
Design, Manufacture and Testing of an Open-Source Benchmark Composite Hydrokinetic Turbine Blade Open
In a trend towards clean energy alternatives, recent years have seen great strides in the marine energy space. This has resulted in a pressing need for the design, development, and validation of novel energy harvesting technologies such as…
View article: Investigating Marine Environmental Degradation of Additive Manufacturing Materials for Renewable Energy Applications: Preprint
Investigating Marine Environmental Degradation of Additive Manufacturing Materials for Renewable Energy Applications: Preprint Open
Marine renewable energy is a relatively young industry where there is a great need for rapid prototyping in design-build-test campaigns to quickly mature groundbreaking technologies. Additive manufacturing has an important role to play in …
View article: Using Large-Scale Additive Manufacturing for Wind Turbine Blade Core Structures
Using Large-Scale Additive Manufacturing for Wind Turbine Blade Core Structures Open
This report describes the techno-economic potential of using additive manufacturing technologies to design large wind turbine blade structures. After considering all additive technologies, the authors identified large-scale, polymer-based,…
View article: Subcomponent Validation of Composite Joints for the Marine Energy Advanced Materials Project
Subcomponent Validation of Composite Joints for the Marine Energy Advanced Materials Project Open
The Marine Energy Advanced Materials project is an ongoing multi-year, multi-lab project with the main goals of addressing barriers and uncertainties facing marine energy developers in adopting advanced materials for structural application…
View article: Investigating Marine Environmental Degradation of Additive Manufacturing Materials for Renewable Energy Applications
Investigating Marine Environmental Degradation of Additive Manufacturing Materials for Renewable Energy Applications Open
Marine renewable energy is a relatively young industry where there is a great need for rapid prototyping in design-build-test campaigns to quickly mature groundbreaking technologies. Additive manufacturing has an important role to play in …
View article: Hexagonal Distributed Embedded Energy Converters (HexDEECs)
Hexagonal Distributed Embedded Energy Converters (HexDEECs) Open
Distributed Embedded Energy Converter Technologies (DEEC-Tec) is a new domain for marine renewable energy research that utilizes a conglomeration of small distributed embedded energy converters (DEECs) that, in aggregate, form larger metam…
View article: Subcomponent Validation of Composite Joints for Marine Energy Structures
Subcomponent Validation of Composite Joints for Marine Energy Structures Open
The Marine Energy Advanced Materials project addresses the barriers and uncertainties facing marine renewable energy developers in using composite materials for load-bearing structures. Sponsored by the U.S. Department of Energy's Water Po…
View article: Marine Energy Composites and Manufacturing Workshop.
Marine Energy Composites and Manufacturing Workshop. Open
View article: Characterization and repair of core gap manufacturing defects for wind turbine blades
Characterization and repair of core gap manufacturing defects for wind turbine blades Open
Various wind turbine blade components, such as shear webs and skins, commonly use fiber-reinforced composite sandwich structures with a core material like balsa or foam. During manufacturing, core gap defects may result from the misalignme…
View article: Leveraging the Advantages of Additive Manufacturing to Produce Advanced Hybrid Composite Structures for Marine Energy Systems
Leveraging the Advantages of Additive Manufacturing to Produce Advanced Hybrid Composite Structures for Marine Energy Systems Open
Many marine energy systems designers and developers are beginning to implement composite materials into the load-bearing structures of their devices, but traditional mold-making costs for composite prototyping are disproportionately high a…
View article: Investigating Core Gaps and the Development of Subcomponent Validation Methods for Wind Turbine Blades
Investigating Core Gaps and the Development of Subcomponent Validation Methods for Wind Turbine Blades Open
Core gaps are a common manufacturing defect observed in wind blade composite sandwich constructions, which occur when sheets of core material are not properly butted up against each other in the mold. The aim of this study was to character…
View article: Effects of moisture absorption on damage progression and strength of unidirectional and cross-ply fiberglass–epoxy composites
Effects of moisture absorption on damage progression and strength of unidirectional and cross-ply fiberglass–epoxy composites Open
Fiber-reinforced-polymer composites (FRPs) possess superior mechanical properties and formability, making them a desirable material for construction of large optimized mechanical structures, such as aircraft, wind turbines, and marine hydr…
View article: Effects of moisture absorption on damage progression and strength of unidirectional and cross-ply fiberglass-epoxy composites
Effects of moisture absorption on damage progression and strength of unidirectional and cross-ply fiberglass-epoxy composites Open
Fiber-Reinforced-Polymer composites (FRP's) possess superior mechanical properties and formability, making them a desirable material for construction of large optimized mechanical structures, such as aircraft, wind turbines, and marine hyd…