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Mary Bevan
Director, Corporate Communications

Concurrent Technologies Corporation Team Sees Project Results Firsthand on USS Gettysburg

The USS Gettysburg is docked at BAE Systems in Norfolk to receive upgrades necessary for her return to fleet. Photo courtesy of the @USSGettysburg Facebook page.

Johnstown, PA December 19, 2019

The Aluminum Sensitization Measurement and Control (ASMC) Program, a US Navy program being conducted by Concurrent Technologies Corporation (CTC), achieved its first milestone recently by conducting a site visit on an active duty Navy ship.

A CTC team consisting of Rob Akans, Tim Freidhoff, Dan George, and Rob Mason toured the USS Gettysburg (CG 64) while it was undergoing repairs at the Norfolk Naval Shipyard in Norfolk, VA. The group was escorted by personnel from the Commander, Navy Regional Maintenance Center (CNRMC), a Naval Sea Systems (NAVSEA) command field activity.

The group saw areas of the ship that are being repaired to establish design criteria for tools and technologies that are being developed under ASMC. In addition, the team viewed an area that was repaired several years ago under a project executed by the Navy Metalworking Center (NMC), an Office of Naval Research Center of Excellence that CTC operated. Under the NMC project, CTC developed and demonstrated a low-cost alternative to address sensitized aluminum in ship structures. CTC’s portable Reverse Sensitization Unit (RSU) restores affected material in the ship’s superstructure and reduces the propensity for cracking. The group observed that the area on Gettysburg that had been treated with the RSU in July 2016 was still structurally sound.

The ASMC Program is a newer effort that CTC is executing through the Ingalls Shipbuilding CG 47 Class Planning Yard contract, which supports the modernization of CG 47 Class cruisers. Under this effort, CTC will demonstrate and deploy repair strategies and technologies that reduce costs and improve readiness related to aluminum sensitization and subsequent stress corrosion cracking. The selected technologies will build upon techniques and technologies, including friction stir welding, coatings, and RSUs that have been developed by CTC under prior efforts.