NSF award 2555180 · University of North Texas

ECLIPSE: Collaborative Research: Advancing Subsea Welding through Foundational Investigations of Plasma-Liquid-Solid Interactions

Final report due

29 December 2029

in 1,168 days · The award ends on 31 August 2029.

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Decide about an extension3 May 2029in 928 days
award ending 2029-08-31 · Research.gov
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Extension request17 Jul 2029in 1003 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “at least 45 days prior to the end date”
No-cost extension notice21 Aug 2029in 1038 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “at least ten calendar days prior to the end date”
Final report due29 Dec 2029in 1168 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “no later than 120-days following the end date of the award”
Project outcomes report due29 Dec 2029in 1168 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “no later than 120 days following the end date”
Award is closed out29 Dec 2029in 1168 days
award ending 2029-08-31 · Research.gov
PAPPG 24-1: “financially closed out 120 days after their expiration date”

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NSF lists this award's end date as 31 August 2029.
NSF rules say the final report is due no later than 120 days after that.
So the final report is due by 29 December 2029.

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Award card

Award number: 2555180
Period of support: 1 Sep 2026 – 31 Aug 2029
Amount: $225,000
Awardee: University of North Texas, Denton, TX
Program: AM-Advanced Manufacturing
Directorate: ENG

Abstract

Reliable underwater welding is essential for maintaining offshore energy systems, naval ships, bridges, pipelines, ports, and emerging subsea robotic infrastructure. However, welding underwater is extremely challenging because surrounding water cools the metal quickly and introduces gases that can weaken the weld. As a result, underwater welds can crack or fail over time, creating safety and reliability concerns.…

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