Structural health monitoring (SHM) is a novel technology, and like any new technological advancement it has yet not realized its full potential. It builds on advancements in several disciplines including nondestructive evaluation, smart materials, and embedded sensors and actuators. One of the enabling disciplines is the numerical simulation. SHM utilizes a variety of techniques, vibration based, impedance and guided ultrasonic waves. Guided waves offers a wide repertoire of advantages. The major challenge facing the full utilization of the numerical simulation in designing a viable guided...

The main objective of this work is to study the possibility of using dairy manure in Biofert production to eliminate the pollution effect and contribute in solving bio fertilizer sacristy problem. This study was carried out to investigate the most important factors affecting the Biofert production such as temperature, agitation speed and aeration rate to obtain the proper factors for optimum production of the nutrient solution (Bio-fertilizer). Two different systems of aeration were studied. After obtaining the proper nutrient solution for production, field experiment was conducted to study...