All engineering structures experien

All engineering structures experience vibratory motion
whether in reference to the world’s tallest building or a
printed circuit board in a flight control computer. The
effect of operating environments and inherent dynamic
behavior cause the transmission of periodic waves
throughout a structure. In turn, the structure undergoes
mechanical vibrations. These unwanted vibrations result in
fatigue and catastrophic failure of structures. Hence, the
control of vibrations is a serious concern for engineering
design.