The issue of crack detection and diagnosis has gained wide spread industrial interest. Identification of crack depths and their location from reference point are the standard methods in performance monitoring of the composite beam. The present work introduces an attempt to study the variations in the Eigen-nature of cracked composite beam at different crack depths and locations. The composite beam with edge crack is considered in the paper. The presence of crack changes the physical characteristics of a structure which in turn alter its dynamic response characteristics. The frequency, amplitude and acceleration of cracked and uncracked beam response was determined experimentally. Analysis is carried out in both time and frequency domains, which is aimed to identify the dynamic response associated with the existence of crack Surface cracks and edge crack are the frequently occurring phenomena in the structures of engineering applications. The effect of these cracks on the performance of the structure is more severe and complex when the structure is made of composite material. Identification of various parameters pertaining to cracks like depth, distance form reference point are part of the standard methods in performance monitoring of the structure [1]. Currently available non-destructive testing (NDT) methods, such as acoustic or ultrasonic methods, magnetic field methods, radiographs, eddy-current methods and thermal field methods are time consuming when compared to induced vibration techniques [2]. Many procedures are proposed in this line and developed for isotropic materials. But for composite materials very limited data is available in identification and analysis of cracks.The presence of crack in a structural member introduces a local flexibility that affects its vibration response [3]In this case the system is non linear moreover the presence of crack introduces new harmonics in the spectrum. The papers [46] on this method were published in the recent years. Some information on analytical, numerical and experimental investigations now exits. Finite element analysis techniques [710], together with experimental results are used to detect damage. They locate and estimate damage events by comparing dynamic responses between damaged and undamaged structures. According to the dynamic response parameters analyzed, these methods can be subdivided into modal analysis, frequency domain, time domain and impedance domain. Modeldependent methods are able to provide global and local damage information [11]. They are cost-effective and are relatively easy to operate. However, there are still many challenges and obstacles before these methods can be implemented in practice Preparation of composite material A manual fabrication process is involves building up layers of chopped glass mat impregnated with catalyzed resin around a suitable mold. The reinforcement is then rolled for better wet-out and removing trapped air. The crack will be made by using a saw cut and the specimen will be mounted for cantilever configuration.