Jump to content

Integrated Computational Materials Modelling Framework for Investigating the Process-Structure-Property Linkage of the Lunar Metal Welding with Internal Defects


Recommended Posts

  • Publishers
Posted

1 min read

Preparations for Next Moonwalk Simulations Underway (and Underwater)

ESI24 Li Quadchart

Wei Li
University of Texas at Dallas

Internal defects are always formed in laser welding process due to the keyhole instability, molten pool collapse, and rapid solidification. The extreme lunar environment complicates the reliable implementation of welding, thereby enhancing the welding defects formation. The welding defects are critical material barriers preventing the metal components from Moon exploration. Professor Wei Li’s team will establish an integrated computational materials modelling framework to study the process-structure-property linkage of laser welding under the lunar conditions. The research is emphasized on modelling the internal defects (void, lack of fusion) formed in the lunar laser welding by fully considering the reduced gravity, large temperature change, and extreme vacuum on the Moon surface, and predicting the influence of internal defects on the material and mechanical properties of welding joint.

Back to ESI 2024

View the full article

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Similar Topics

    • By NASA
      3 min read
      Preparations for Next Moonwalk Simulations Underway (and Underwater)
      Gateway’s HALO module at Northrop Grumman’s facility in Gilbert, Arizona, on April 4, 2025, shortly after its arrival from Thales Alenia Space in Turin, Italy. NASA/Josh Valcarcel NASA continues to mark progress on plans to work with commercial and international partners as part of the Gateway program. The primary structure of HALO (Habitation and Logistics Outpost) arrived at Northrop Grumman’s facility in Gilbert, Arizona, where it will undergo final outfitting and verification testing.
      HALO will provide Artemis astronauts with space to live, work, and conduct scientific research. The habitation module will be equipped with essential systems including command and control, data handling, energy storage, power distribution, and thermal regulation.
      Following HALO’s arrival on April 1 from Thales Alenia Space in Turin, Italy, where it was assembled, NASA and Northrop Grumman hosted an April 24 event to acknowledge the milestone, and the module’s significance to lunar exploration. The event opened with remarks by representatives from Northrop Grumman and NASA, including NASA’s Acting Associate Administrator for Exploration Systems Development Lori Glaze, Gateway Program Manager Jon Olansen, and NASA astronaut Randy Bresnik. Event attendees, including Senior Advisor to the NASA Administrator Todd Ericson, elected officials, and local industry and academic leaders, viewed HALO and virtual reality demonstrations during a tour of the facilities.
      Dr. Lori Glaze, acting associate administrator for NASA’s Exploration Systems Development Mission Directorate, and Dr. Jon B. Olansen, Gateway Program manager, on stage during an April 24, 2025, event at Northrop Grumman’s facility in Gilbert, Arizona, commemorating HALO’s arrival in the United States. Northrop Grumman While the module is in Arizona, HALO engineers and technicians will install propellant lines for fluid transfer and electrical lines for power and data transfer. Radiators will be attached for the thermal control system, as well as racks to house life support hardware, power equipment, flight computers, and avionics systems. Several mechanisms will be mounted to enable docking of the Orion spacecraft, lunar landers, and visiting spacecraft.
      Launching on top of HALO is the ESA (European Space Agency)-provided Lunar Link system which will enable communication between crewed and robotic systems on the Moon and to mission control on Earth. Once these systems are installed, the components will be tested as an integrated spacecraft and subjected to thermal vacuum, acoustics, vibration, and shock testing to ensure the spacecraft is ready to perform in the harsh conditions of deep space.
      In tandem with HALO’s outfitting at Northrop Grumman, the Power and Propulsion Element – a powerful solar electric propulsion system – is being assembled at Maxar Space Systems in Palo Alto, California. Solar electric propulsion uses energy collected from solar panels converted to electricity to create xenon ions, then accelerates them to more than 50,000 miles per hour to create thrust that propels the spacecraft.
      The element’s central cylinder, which resembles a large barrel, is being attached to the propulsion tanks, and avionics shelves are being installed. The first of three 12-kilowatt thrusters has been delivered to NASA’s Glenn Research Center in Cleveland for acceptance testing before delivery to Maxar and integration with the Power and Propulsion Element later this year.
      Learn More About Gateway Facebook logo @NASAGateway @NASA_Gateway Instagram logo @nasaartemis Linkedin logo @NASA Share
      Details
      Last Updated Apr 25, 2025 ContactLaura RochonLocationJohnson Space Center Related Terms
      Artemis Artemis 4 Earth's Moon Exploration Systems Development Mission Directorate Gateway Space Station General Humans in Space Explore More
      2 min read NASA Welcomes Gateway Lunar Space Station’s HALO Module to US
      From Italy to Arizona: Gateway’s first habitation module takes a major step on its path…
      Article 3 weeks ago 2 min read NASA Prepares Gateway Lunar Space Station for Journey to Moon
      Assembly is underway for Gateway's Power and Propulsion Element, the module that will power the…
      Article 2 months ago 2 min read Advanced Modeling Enhances Gateway’s Lunar Dust Defense
      Ahead of more frequent and intense contact with dust during Artemis missions, NASA is developing…
      Article 3 months ago Keep Exploring Discover Related Topics
      Missions
      Humans in Space
      Climate Change
      Solar System
      View the full article
    • By NASA
      1 min read
      Preparations for Next Moonwalk Simulations Underway (and Underwater)
      ECF 2024 Quadchart Boles.pdf
      Jessica Boles
      University of California, Berkeley
      This project will develop piezoelectric-based power conversion for small power systems on the lunar surface. These piezoelectric systems can potentially offer high power density to significantly reduce size, weight, and cost. They can also offer high efficiency as well as resistance to the extreme lunar environment with its expected prolonged exposure to extreme cold and radiation. The effort will build and test prototype piezoelectric DC-to-DC power converters and DC-to-DC power supplies.
      Back to ECF 2024 Full List
      Share
      Details
      Last Updated Apr 18, 2025 EditorLoura Hall Related Terms
      Early Career Faculty (ECF) Space Technology Research Grants View the full article
    • By Space Force
      The Space Force releases the Space Warfighting framework, outlining the service's vision for achieving and maintaining space superiority while ensuring the long-term safety and sustainability of the space domain.

      View the full article
    • By Space Force
      The Space Force released the Space Warfighting framework, outlining the service's vision for achieving and maintaining space superiority while ensuring the long-term safety and sustainability of the space domain.

      View the full article
    • By Amazing Space
      LIVE: Stunning Lunar Views Captured with Seestar S50 Smart Telescope 🌕✨
  • Check out these Videos

×
×
  • Create New...