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Thin-Layer Magnetostrictive Composites for Fan Blade Damping

Award Information

Agency:
Department of Defense 		Branch:
Navy 		Award ID:
64515 		Program Year/Program:
2003 / SBIR
Agency Tracking Number:
N021-0618 		Solicitation Year:
N/A 		Solicitation Topic Code:
N/A 		Solicitation Number:
N/A
Small Business Information
Integrated Micro Sensors, Inc.
10814 Atwell Drive Houston, TX 77096-4934
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 2003
Title: Thin-Layer Magnetostrictive Composites for Fan Blade Damping
Agency / Branch: DOD / NAVY
Contract: N68335-04-C-0001
Award Amount: $599,227.00
 

Abstract:

This proposed project will advance the capabilities of Fortis Technologies' patent-pending, magnetostrictive particulate composite dampers. These composites passively (a great advantage in simplicity and effectiveness over other recently developed activematerial dampers) provide damping through domain wall switching, a non-conservative action which provides a high loss factor (~ 0.40). These dampers can be easily fabricated into complex shapes, provide stiffness and strength while also incorporatingnovel damping capabilities which exceed in performance and temperature range viscoelastic materials, the current state of the art for damping.Currently, the magnetostrictive material used in these dampers is Terfenol-D, a rare-earth/iron alloy, which was originally developed for sonar applications. The hysteresis of the material is minimal by design. However, by altering the composition of thealloy, i.e. the ratio of rare-earth to iron, the size and activation stress of hysteresis in the material can be changed, increasing loss factors and effective stress ranges. Fortis Technologies proposes to use this new technology in thin-layers onturbomachinery components and measure the vibration mitigation effectiveness on a variety of turbomachinery components susceptible to high-cycle fatigue. We believe this economical process can easily be scaled up and commercially implemental for a varietyof applications throughout a turbine engine.BENEFITS: The passive damping technology provides extremely large damping losses in a structurally stiff polymer composites. Currently damping is either active (expensive and complex) or uses viscoelastic materials (poor structural coupling andtemperature range). The magnetostrictive particulate composite technology, patent applied and licensed by Fortis Technologies, provides a simple, large temperature range, high stiffness materials to be used in many applications where the currenttechnologies fall short. Fortis sees application of this technology for improvements in sporting goods, power/hand tools, space launch and satellite design, noise abatement and vibration isolation.

Principal Investigator:

Badi, Nacer
Research Scientist
7137433621

Business Contact:

Starikov, David
President
7137433621
Small Business Information at Submission:

INTEGRATED MICRO SENSORS
10814 Atwell Drive Houston, TX 77096

EIN/Tax ID: 760649542
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No