Design_of_Machine_Members-I_Presentation.pptx

Intro on design

1. Design of Machine Members-I Introduction and Key Concepts [ S SABAREESAN ] [ Ac year 2024-25 ]

2. Introduction to Machine Design Definition of Machine Design Importance of Machine Design in Engineering Key subjects involved: Mathematics, Engineering Mechanics, Strength of Materials, Theory of Machines, Workshop Processes, and Engineering Drawing.

3. Classifications of Machine Design Adaptive Design: Minor alterations or modifications. Development Design: Modifying existing designs significantly. New Design: Requires extensive research, technical ability, and creativity.

4. Types of Design Methods Rational Design: Based on mathematical principles. Empirical Design: Based on empirical formulas and experience. Industrial Design: Focuses on production aspects. Optimum Design: Best design under specified constraints. System Design: Design of complex systems like motor cars. Element Design: Design of individual components like pistons, crankshafts, etc. Computer-Aided Design (CAD): Using computers to assist in design processes.

5. General Considerations in Machine Design Type of Load and Stresses Motion of the Parts Selection of Materials Form and Size of Parts Frictional Resistance and Lubrication Convenient and Economical Features Use of Standard Parts Safety of Operation Workshop Facilities Number of Machines to be Manufactured Cost of Construction Assembling

6. General Procedure in Machine Design Recognition of Need Synthesis (Mechanisms) Analysis of Forces Material Selection Design of Elements (Size and Stresses) Modification Detailed Drawing Production

7. Engineering Materials and Their Properties Classification: Metals and Alloys (Iron, Steel, Copper, Aluminum) Non-Metals (Glass, Rubber, Plastic) Properties: Physical: Luster, Color, Density, Conductivity, Melting Point Mechanical: Strength, Stiffness, Elasticity, Plasticity, Ductility, Brittleness, Malleability, Toughness, Machinability, Resilience, Creep, Fatigue, Hardness

8. Types of Steel and Their Properties Alloy of iron and carbon (up to 1.5%) Types of Carbon Steel: Dead mild steel: up to 0.15% carbon Low carbon or mild steel: 0.15% to 0.45% carbon Medium carbon steel: 0.45% to 0.8% carbon High carbon steel: 0.8% to 1.5% carbon

9. Summary and Key Takeaways Recap of the importance of machine design Overview of design classifications and methods Key considerations in machine design Highlight the importance of material selection

10. Questions and Discussion Invite questions from students Open floor for discussion on any of the topics covered