CVN Reality Capture
Project Participants: Newport News Shipbuilding Project Start: November 2013 NNS is executing this 13-month project using an iterative process that will lead to incremental implementations. The NNS team has evaluated current scanning technologies, including those based on laser and infra-red light, capable of capturing 3D shipboard configurations and narrowed the field of shipcheck applicable laser […]
Digital Radiography Transition for Inspection of Welds and Castings
Project Participants: Newport News Shipbuilding Project Start: November 2010 The current film-based radiographic inspection process uses expensive, non-reusable film and chemicals that contain materials (silver) that are potentially hazardous to the environment and wastes thousands of gallons of water every year. This film-based inspection process is also very cycle-time intensive, requiring manual handling of materials […]
Small Weldment Optimized Cell
Project Participants: Northrop Grumman Shipbuilding-Newport News Project Start: August 2007 Small weldments at Northrop Grumman Shipbuilding-Newport News (NGSB-NN) are considered any structural part manufactured or assembled in the small component fabrication and assembly shops (generally up to 4-ft by 8-ft and weighing no more than 5 tons). Current manufacturing and assembly methods for small weldments […]
Computed Radiography Alternative to Conventional Film
Project Participants: General Dynamics Electric Boat Project Start: February 2006 Conventional film radiography has been used for volumetric inspection of piping and structural welds, castings and various components used for construction, overhaul and repair of naval surface vessels and submarines and for more than fifty years. Computed radiography technology advancements promise to revolutionize industrial radiography […]
Predictive Weld Distortion in Thick Navy Structures
Project Participants: Northrop Grumman Shipbuilding-Newport News Project Start: November 2004 SShipbuilders often use heat addition (flame straightening) to remove the distortion caused by welding. This labor and time intensive method affects product cost and schedule and is a complicated trial-and-error solution method. Experience can reduce the number of iterations to the solution, but the number […]
High Heat Input Welding of Thick HSLA-100 with Reduced Pre-heat
Project Participants: Northrop Grumman Shipbuilding-Newport News Project Start: August 2004 This Northrop Grumman Shipbuilding – Newport News project was performed to determine the feasibility of joining HSLA-100 with 60°F preheat using high heat inputs with both the mechanized pulsed Gas Metal Arc Welding (GMAW-P) and SAW processes. The project was divided into three phases, the […]
Wireless Automated Diagnostic/Prognostics
Project Participants: Northrop Grumman Shipbuilding-Newport News Project Start: July 2004 Automated Diagnostic and Prognostic (ADP) systems can be used as a means both to reduce Preventive Maintenance and to predict when Corrective Maintenance on plant equipment will be required. This involves robust current condition diagnostics and future condition prognostics capabilities. These capabilities are rapidly emerging […]