In situ NDI and correction of the AM process with laser SAW and heterodyne detection Navy STTR FY2015.A Sol No.: Navy STTR FY2015.A Topic No.: N15A-T008 Topic Title: In situ NDI and correction of the AM process with laser SAW and heterodyne detection Proposal No.: N15A-008-0168 Firm: PolarOnyx, Inc 2526 Qume Drive, Suites 17 & 18 San Jose, California 95131 Contact: Jian Liu Phone: (408) 573-0930 Web Site: www.polaronyx.com Abstract: This Navy STTR Phase I proposal presents an unprecedented NDI tool to support laser additive manufacturing of metal parts by using fiber laser SAW and heterodyne detection. It is the enabling technology for real time characterize the AM parts in terms of temperature, cooling rate, grain structure, and defects. A proof of concept demonstration will be carried out at the end of Phase 1.Prototypes will be demonstrated in AM system at the end of Phase II. Benefits: In addition to Navy's aerospace parts manufacturing, the proposed close looped fiber laser AM process can also be used in other applications, such as space vehicle, aircraft, and satellite manufacturing. PolarOnyx will develop a series of products to meet various requirements for commercial/military deployments. Other commercial applications include  3D printing uses various technologies for building the products for all kinds of applications from foods, toys to rockets and cars. The global market for 3D Printing is projected to reach US$2.99 billion by the year 2018, driven by the advent of newer technologies, approaches, and applications.  Medical devices and biomedical instrumentation. The medical device industry is highly fragmented and consists of surgical and infection control devices, general medical devices, cardiovascular, home healthcare, and other devices. Return