ME 16 Machine Design. Prerequisite, ME 2 and Concurrent with Phys 30. A course in design for non-mechanical students. This course is subdivided into two parts. Part one deals with general design and is further divided into two sub-groups. The first part of this sub-group deals with what is commonly called Mechanisms and the second part deals with subject matter which is usually associated with Machine Design courses which should lead to the ability to proportion parts of machine elements. Part two is for the purpose of making the student acquainted with materials and their characteristics through microscopic examination. In this part of the work the student is required to examine not only steels but non-ferrous materials such as brasses and alloys of aluminum as well. This information coupled with that given in Course Phys 30 should acquaint the student with materials from any points of view and should make him conscious of the important part played by materials in design work. _Text: Hyland and Kommers, “Machine Design”._ ME 18 Graphics and Structural Design. Prerequisite, Phys 30. The theory of graphic statics is developed. It is then applied to beams, columns, roof trusses, cranes, etc. The theory of re-enforced concrete is studied. Design problems on conveyers, foundations, cranes, chimneys and walls are worked out. A classroom and drafting room course for senior mechanical engineering students. _Text: Opdyke and Schweizer, “Graphic and Structural Design Notes”._ ME 20 Physical Metallurgy. Prerequisite, CH 11. This course deals with the study of metals by means of microscopic examination. The subject is introduced by a discussion which aims to define a metal. This is followed by an explanation of metallic properties and the distinction between metals, non-metals, and metalloids. The standard equilibrium diagrams for binary alloys are then studied and include the liquid to solid and the solid to solid transformations that take place. This is followed by a detailed study of the iron, iron-carbon diagram. The effect on the microscopic structure due to the addition of a third element such as nickel, manganese, chromium, vanadium, tungsten, etc., is then studied. The equilibrium diagrams of the copper-zinc and aluminum copper are then studied in detail. In addition to these discussions the student is required to prepare for microscopic examination and to take photo-micrographs of such materials as cast iron, cold rolled steel, carbon steels, standard S. A. E. Steels such as nickel, nickel-chromium and molybdenum steels, brasses and aluminum alloys, etc. _Text: Van Wert, “Introduction to Physical Metallurgy”, Woldman, “Physical Metallurgy”, “Metallurgy Laboratory Manual”._ ME 22 Metallography. Prerequisite, ME 20.