[MUSIC] Welcome, and thanks for joining me in Mechanics of Materials part III, on the topic of beam bending. The learning outcomes for today's class are to describe the importance of studying mechanics of materials, outline the general analysis approach and to list the major topics in the course. Mechanics materials are the foundation for all structural and machine design and we start with an engineering structure. In this case, in this course, we'll be looking at structures like bridges that contain beams. Those beams will be subjected to external loads and, in my first course, looked at axial loading, in part two, we looked at torsional or twisting loading, and now in this course we're going to look at transverse or flexual, or bending loading. And once we put those loads on the beam, it's going to generate internal forces in moments. That'll again, generate stresses and strains and we can analyze those to look at the overall structural performance of the beam to determine whether the design is successful or if it fails. This was my first course, Mechanics of Materials part one, in this four part series, and in that course, we covered the fundamentals of stress and strain, and axial loading. And you will need that course as a prerequisite before you can do this course successfully. The second course was on Thin-Walled Pressure Vessels and Torsion, and that's actually not a prerequisite for this current course. You can jump right from Mechanics and Materials One To Mechanics of Materials III in which we're going to discuss beam bending. And then finally, the last part IV of this series of mechanics materials courses, we'll cover some other topics on defluction, buckling, combined loading and failure theories. As with my other courses in this series my emphasis is going to be on understanding the principles A mechanics materials rather than on extensive computational computer work. There are lots of computer programs out there, lots of computational programs out there that will assist you and work with you on how to design beams and analyze beams. But we're going to look at the fundamentals and the principles of how mechanics and materials theory is developed and used. And so I'm looking forward to getting started with you and we'll see you at module two. [MUSIC]