Acoustic Meta Materials

SMD is involved in the product development and supply of Acoustic Meta Materials (AMM).  AMM’s are a special class of designable materials that have properties not available in natural materials. They generally consist of arrays of periodic elements embedded in a matrix material.  Different arrangements of AMM have been developed depending upon the application. These materials have many applications where high acoustic performance, particularly at low frequencies is desired in a lightweight, compact configuration. Target markets are in aircraft, space, automobiles and DOD machinery systems

Flexible PDF Wire Sensor

Flexible PVDF Wire Sensor 

An externally-mounted pipe sensor system is being developed based on a flexible piezoelectric polyvinylidene flouride (PVDF) wire transducer wrapped around pipe walls to measure fluidborne acoustic signatures at frequencies below 3 kHz to improve monitoring and controlling unwanted acoustic signature.

PDVFApplicationTable3

Active Quiet Pillow

An active quiet pillow is being developed using a combination of active control and passive treatment elements in a pillow arrangement that effectively cancels and dampens harmful low, mid and high frequency helicopter tones at a patient’s ears during MEDEVAC and CASEVAC evacuation operations.

 

QuietPillowApplicationTable3

Interested in learning more about our products?

Please Contact us for more information on our products and solutions.  Customization for specific environments and applications is available upon request.