3-point bending group third meeting Aerospace department Cairo University

1. Meetings Reports<br />Meeting # 3 4/4/2011<br />In this meeting our main aim was to redesign our old apparatus to help us in our new objectives and to fix the problems we faced in our previous design.<br />We discussed various solutions for each problem separately as follows:<br />The base: we agreed to keep the same base and to make a crossed incision (hole) in it to help us in buckling by inserting the beam in this incision.<br />Supports: we decided to make a new supports which will cover the old ones’ problems -such as instability and friction with the T-slot that makes them difficult to move- by making a cylindrical bolt -not hexagonal as the old one- to let it move freely inside the T-slot and to add a hex. nut above the T-slot to lock the bolt where ever we need. Also we agreed to make them cylindrically shaped –previous ones had a knife edge- so that we prevent the beam from falling or slipping during experiments. They will have the same height as the old ones.<br />Tower: we will add a removable part to the tower to help us in buckling tests to make our device capable to test longer beams as well.<br />Wooden Part: we will make two new parts one for bending tests and the other one for buckling tests. The bending wooden part will have 3 slots made longitudinally to prevent it from spinning. The buckling wooden part will have a cylindrical shape and will be split lengthwise for about one third of the length to help us in holding the beam. <br />Ahmed Al.Shazly<br />