This is the final module of Mechanics of Materials Part 4. This is module 23 and our learning outcome is to just provide a course conclusion. So Mechanics of Materials, the four-part series course that we've now are coming to a conclusion on is a foundation for all structural machine design. We start with an engineering structure. Here is a typical engineering structure, a bridge. It has external loads applied to it. Those loads can be any combination. We've even looked at a problem where we had a combination of all of these loads. They generate internal forces and moments in which we can calculate stresses and strains, and then look at the overall structural performance to see if our structure will succeed or fail. We look at things like yield fracture, deformations, deflections. So in this particular course, Part 4, we looked at deformations, typical deformations. This is an example of a simply supported beam with a pin and a roller on either end. We looked at deformations and structures like this a typical structure, not a typical structure, but a very famous structure with cantilever beams included. We also looked at buckling. This was an experimental setup for different cases of column buckling with different end conditions. Some examples of buckling, we looked at local flange buckling as an example or buckling of columns during the winds or tower fire in Madrid. So as a total wrap up, in Part 1 course of Mechanics Materials, we looked at the fundamentals of stress and strain and axial loading, and then we went on to Part 2 and looked at thin-walled, pressure vessels, and torsion. Finally, in three, you're not finally, but in Part 3, we looked at beam bending, a very important topic for mechanics and materials, and then we wrapped it all up in this course where we looked at deflections, we looked at column buckling, we looked at cases where we can have combined loading, and we looked at the failure theories. So if you have completed this four-part series, you should have a good basic foundation in understanding of Mechanics of Materials. It's been a pleasure to have you join me in this course.