Low-cost, low frequency slotted cylinder transducer

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$499,696.00
Award Year:
2009
Program:
STTR
Phase:
Phase II
Contract:
N00014-09-C-0238
Award Id:
83475
Agency Tracking Number:
N074-035-0174
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
2500 N. Loop Drive, Ames, IA, 50010
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
798683355
Principal Investigator:
EricSummers
Director of Materials Eng
(515) 296-8030
eric.summers@etrema.com
Business Contact:
JonSnodgrass
Director of Materials Eng
(515) 296-8030
jon.snodgrass@etrema.com
Research Institute:
ARL Penn State
Charles Allen
ARL Penn State
P.O. Box 30
State College, PA, 16804
(814) 863-4430
Nonprofit college or university
Abstract
In the Phase I effort a Galfenol-based slotted cylinder projector (SCP) device was conceived utilizing an existing PZT SCP design and analytical modeling to determine the geometry requirements necessary to achieve the performance specs: 210 dB source level, 750 Hz resonance frequency, 200 Hz bandwidth. The final form factor was a Galfenol SCP with overall dimensions of 7.75" diameter x 12" length utilizing a graphite composite shell material with Galfenol drivers comprising a rib-like structure within the shell. The technical objectives in Phase II will include design optimization through improved modeling efforts, the development of manufacturing processes capable of producing the Galfenol rib structures, and the construction and testing of one complete transducer system. Device test data will be compared to predicted performance results via the developed model. A design iteration will be completed on paper along with beginning investigations into reducing manufacturing costs.

* information listed above is at the time of submission.

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