Effect of Material and section shape in bending Lab Report

Effect of Material and section shape in bending - Lab Report Example It is therefore a complicated endeavour. In selecting materials for beams, various properties other than the cost and the availability, are taken into consideration. These properties include the Type, Yield Strength, Ductility, Youngs Modulus, Hardness, Poissons ratio, and behaviour in low or high temperatures (Charles, Crane & Furness, 1997, p. 43). Yield strength is the amount of stress at which deformation of a material starts to occur. The Youngs modulus is the measure of a beams resistance to deformation. Materials show different behaviour at low and high temperatures. The strength of material reduces with increasing temperature. For example the Youngs modulus of copper is at room temperature and at almost 100Â °C. The selected material should be able to withstand all the applied forces without failure. A beam under bending stress experiences a negative strain on the side whereby force is applied, and a positive strain on the opposite side (Dupen, 2012, p.68). This results in the change of size on either side. The st iffness of beam under stress depends on the product of modulus of elasticity () and the second moment of area (), that is (Krenik, 2001, p.27). For a simply supported beam, the deflection () of beam is determined by the following equation, that is When the load () is increased, the defection () also increases and if the length is increased, greater deflections are obtained as a result of the cubed term. An increase in the modulus of elasticity and the second moment of area results in a decrease in the deflection. The stiffness of a material is determined by the Youngs modulus, which is expressed by rearranging the deflection equation as . A graph of load plotted against the has a gradient equal to the Youngs modulus . The stiffness is derived by plotting the load against deflection. It is the slope of the graph. The three point

Leadership Assignment Example | Topics and Well Written Essays - 750 words - 1

Leadership - Assignment Example The operations function plays a significant role in transformations of inputs into finished products and services, in any successful organization. Operations are directly responsible for decisions and activities relating to design of product and delivery issues. Resourceful implementation of this goal adds value to productivity of an organization as it; determines how material resources are consumed in the production of products, checks on quantities of available inventory in line with the demand of the customers, and determines whether what is produced match the wants of customers. Continuous improvement in the efficiency of operations and functions affects the productivity of an organization in a number of ways. When referring to efficiency in organizational operations, it entails ensuring effectiveness in activities such as suitable and effective communication link between the operations and related business functions. Operations management works hand in hand with business functions such as the purchasing and marketing function; in an organization’s supply chain, in order to understand the demands of specific group of customers. The operations managers achieve this function by designing products that exactly meet the demands of customers and creation of production processes that efficiently produce these products. Meanwhile, the marketing function must properly understand the capabilities and limitation of the operations in producing the desired products and services. Moreover, the operations must work closely with purchasing to comprehend readiness o f material required, cost and quality of material and the reliability of suppliers. Therefore, operations must understand the needs of customers; ensure timely sourcing of material to support product design. Through continuous improvements in communication routines between the operations, purchasing and marketing function, the organization finds itself in a place where it produces