In many industrial areas, it is becoming increasingly desirable to use materials that are lightweight in order to increase
the power efficiency and to decrease the production cost. Lightweight structures are also extensively used in aircraft and
spacecraft applications. These structures are subsequently flexible and have a greater number of resonant modes in the
lower frequency region. This increased flexibility makes these structures more susceptible to imposed environmental
disturbances. For instance, orbital operations in spacecraft, such as slewing, quick tracking, and pointing maneuvers
cause vibrations.1 In automobiles, vibration and noise is caused by the engine and road conditions.2 Larger structures,
like bridges and towers, are influenced by strong winds and earthquakes.3 Some of these vibrations are extremely
destructive and may cause unwanted stress and even failure. Attenuation of these oscillations in major parts of the
structure has therefore become very crucial in recent years