Ship Vibration Mitigation for Additive Manufacturing Equipment
Navy STTR 2020.A - Topic N20A-T010
NAVSEA - Mr. Dean Putnam email@example.com
Opens: January 14, 2020 - Closes: February 26, 2020 (8:00 PM ET)
NAVSEA Technology Office (SEA 05T), Cross Platform System Development (CPSD)
OBJECTIVE: Develop a
process to mitigate the effects of shipboard vibration on additive manufacturing
DESCRIPTION: The Naval
fleet suffers from long lead times to obtain replacements for broken, worn, or
otherwise failed parts. When underway, failed parts can only be replaced if the
ship’s supply center, which has limited inventory space, has the parts in
stock. AM will offer the potential to reduce supply chain issues through
shipboard manufacturing of replacement parts on an as-needed basis. The only
other method currently available to replace failed parts includes very expensive
ship and/or helicopter transport to at-sea vessels. AM creates parts through
layer-by-layer deposition from a three-dimensional Computer Aided Design (CAD)
model, thereby allowing a wide range of parts to be created using a single
manufacturing system. Currently available Commercial Off-the-Shelf (COTS) AM
systems deposit material using established methodologies and produce known
dimensional tolerances. These AM methodologies are designed for printing on
land in controlled environments.
PHASE I: Develop a
concept to mitigate the effects of motion/vibration on a material extrusion AM
system. Establish feasibility of the concept through modeling and analysis. The
Phase I Option, if exercised, will include the initial design specifications
and capabilities description to build a prototype solution in Phase II.
PHASE II: Develop and
integrate a prototype with the commercially available AM equipment defined in
Phase I that mitigates the effects of motion/vibration on the AM equipment
system, and can be tested on a vibration test machine. Produce test specimens
under controlled motion and vibration that will be analyzed to determine the
effect of the mitigation technique. If cost effective, test the prototype on
existing AM equipment installed on a surface platform. Develop a detailed plan
for Phase III.
PHASE III DUAL USE
APPLICATIONS: Install the technology on a surface ship platform. Throughout the
surface ship’s deployment, collect data that identifies the motion/vibration
profiles and resultant print quality. Use this data to validate and qualify the
technology and enable certification of components produced through the effort.
1. Strickland, Jason.
“Applications of Additive Manufacturing in the Marine Industry.” Practical
Design of Ships and Offshore Structures (PRADS) 2016, Copenhagen,
2. Leonard, Joshua.
“Stennis Engineers Use 3D Printer to Make Repairs to Critical Systems.” U.S.
Navy Official Website. Release Date: 12/20/2018. https://www.navy.mil/submit/display.asp?story_id=108182
Manufacturing; AM; 3D Printing; Motion Compensation; Vibration Compensation;
Dynamic Environmental Control; Advanced Manufacturing