Noise Control in IC Engines , Seminar Reports | PPT | PDF | DOC | Presentation |

        Noise control is becoming increasingly important for a wide variety of OEM designers. Examples of products that take noise control considerations into account during their design cycles include equipment such as computer hard drives, house appliances, material handling and transportation equipment etc,. In the transportation market, which includes aircraft, ground and marine segments, the demand is for low noise level goals. Achieving these goals is of primary importance for OEM to be continue to be competitive or to keep a given supremacy in the market. The automotive industry has been a leader in the adsorption of noise control technologies. Methods in use for several years for the prediction of interior noise levels include : finite element method(FEM), statistical energy analysis (SEA) boundary element analysis (BEA) etc. The internal combustion engine has mechanized the world. Since the early 1900s it has been our prime source of mechanical power. The vast number of internal combustion engines in the world today has resulted in air pollution, noise pollution etc. 


        Sound can be defined as the perception of vibrations stimulating the ear. If scientifically taken into account, sound is a periodic disturbance in fluids density or in the elastic strain of a solid, generated by vibrating objects. These waves or vibrations propagate in two basic ways.

1.     longitudinal waves.

2.     Transverse waves