A composite blast door, when used as an exterior door of a protected structure, can significantly decrease the risk of life threatening hazards to interior occupants. The composite blast door is composed of outer sheets of steel, intermediate sheets of fiber reinforced polymers (FRP), and a filled core of vaporized aluminum. Rubber gaskets may be used as a buffer layer between the FRP and vaporized aluminum core. Fabrication begins with a door skeleton created from steel framing elements, either hollow structural steel members or channels. Afterwards, the rear panels are attached to the door skeleton in inward order: beginning with the outer steel plate, then the FRP sheet and lastly the optional rubber gasket. The door can now be used as a form to receive the vaporized aluminum filling. After filling, the front panels are attached in the reverse order as the rear panels; rubber first, then FRP, then steel.
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Hyung Choi Owner
Dahn Yoga LLC Amusement/Recreation Services Health Practitioner's Office
5001 Garrett Ave, Beltsville, MD 20705
Hyung Won Choi President
Giga Networks Inc Nonclassifiable Establishments
3699 Wilshire Blvd, Los Angeles, CA 90010
Hyung Suk Choi President
HS ACUPUNCTURE, INC Health Practitioner's Office · Offices of Health Practitioners, Nsk
2727 W Olympic Blvd #208, Los Angeles, CA 90006 3660 Wilshire Blvd, Los Angeles, CA 90010
Hyung Ho Choi President
KOREAN NATIONAL ASSOCIATION MEMORIAL FOUNDATION
2211 S.hacienda Blvd STE .212, Hacienda Heights, CA 91745 1368 W Jefferson Blvd, Los Angeles, CA 90007
Hyung Choi Principal
Skyline Convenience Ret Groceries
1156 Wimbledon Dr, Mc Lean, VA 22101
Hyung Choi Systems Manager
Time Warner Cable Programming, Inc
470 Springpark Pl #1000, Herndon, VA 20170 (571)2030427
Hyung Kyu Choi President
Airbank USA, Inc
3807 Wilshire Blvd, Los Angeles, CA 90010
Hyung Kwon Choi President
IMS USA, INC
3435 Wilshire Bl 2820, Los Angeles, CA 90010 3435 Wilshire Blvd, Los Angeles, CA 90010
Greenville College since Aug 2013
Chair, Physics Department
Innovative Research & Programs Jan 2006 - Dec 2012
President
John Templeton Foundation Jun 2009 - Jan 2012
director, math and physical sciences