News

Showing 6 results for Researcher: Jeffrey R. Bunn

View All news
  • ORNL Placeholder Image

    July 30, 2026

    5 MIN READ

    Neutrons reveal how friction stir welding could strengthen steel armor

    Using neutrons at ORNL, researchers from The Ohio State University are studying residual stress caused by friction stir welding to reveal how to strengthen armor steel welds, like those used in military vehicles. The team’s results will help fine-tune welding parameters to create a roadmap for engineering better armor systems. They brought their research to ORNL’s HFIR due to the facility’s neutron production capabilities.

  • ORNL Placeholder Image

    January 7, 2026

    5 MIN READ

    Neutrons dive deep to help protect US nuclear submarines

    Researchers from ORNL, the U.S. Navy, Electric Boat and the University of Connecticut are using neutron scattering at the High Flux Isotope Reactor to investigate residual stresses that cause ductility dip cracking in copper-nickel welds. The study aims to better understand the mechanisms behind ductility dip cracking and develop approaches to mitigate its occurrence, resulting in safer vessels for the Navy.

  • ORNL Placeholder Image

    July 16, 2018

    2 MIN READ

    Measuring residual stress in nuclear waste canisters

    Researchers used neutron diffraction to map residual stress in stainless steel canisters that store spent nuclear fuel. Residual stress is one of the conditions necessary for chloride induced stress corrosion cracking (CISCC), which is the subject of ongoing research regarding aging management of ca...

  • ORNL Placeholder Image

    October 26, 2017

    4 MIN READ

    Neutrons improve weld integrity of underwater wind turbine foundations

    Massive offshore structures like oil rigs and wind turbines are designed to withstand the myriad punishments oceans tend to mete out. However, over time, just the saltwater itself can significantly decrease the durability of a structure’s welds. That’s why professors Michael Jo...