Course Title Code Semester L+P Hour Credits ECTS
Machine Elements I ME   351 5 3 3 5

Prerequisites and co-requisites
Recommended Optional Programme Components None

Language of Instruction English
Course Level First Cycle Programmes (Bachelor's Degree)
Course Type
Course Coordinator Prof.Dr. Necdet GEREN
Prof.Dr.NECDET GEREN1. Öğretim Grup:A
Prof.Dr.NECDET GEREN2. Öğretim Grup:A
The main aim of this lecture is to teach the basics of machine design, including the design process, failure prevention under static and variable loading.
1-Introduction to Mechanical Engineering Design 2-Materials 3 Load and Stress analysis 4 Deflection and Stiffness 5 Failures resulting from static loading 6 Fatigue Failures resulting from variable loading 7 Shafts and Shaft Components 8 Screws, Fasteners and the Design of Non permanent Joints 9 Welding, Bonding, and the Design of permanent joints 10 Mechanical springs

Learning Outcomes
1) Knows machine design process and its steps.
2) Applies factor of safety and Knows safety philosophy and applies it in design.
3) Determines the stresses and defeclections on machine members subjected to single, 3D or combined loading.
4) Knows static and fatigue failure theories and applies these to design machine members to prevent failures resulting from static or variable loading.
5) Designs shafts and shaft components considering both deflection and stresses. Determines limits and fits for mating parts.
6) Designs power screws for various needs.
7) Selects suitable fasteners for all types of connections.
8) Designs nonpermanent joints subjected to static and variable loading with preload.
9) Selects the suitable connections for permanent joints.
10) Designs and analysis permanent joints made using arc and resisting welding, bonding etc.

Course's Contribution To Program
NoProgram Learning OutcomesContribution
Student become equipped with the basic knowledge of math, science and engineering
Students gain a command of basic concepts, theories and principles in mechanical engineering
Students are able to design and carry out experiments in the basic fields of mechanical engineering, and interpret the results and the data obtained from the experiments
Students become equipped with a variety of skills and knowledge regarding engineering techniques
Students are able to design a system, component or process in order to meet the needs of various engineering problems within technical, economic, environmental, manufacturability, and sustainability limits.
Students independently review and learn the applications in an enterprise, make a critical assessment of the problems faced with, formulate problems and propose solutions by selecting the proper technique
Students take initiative in identification, design, development and use of a product or production process.
Students become aware of the necessity of lifelong learning and continuously self-renew
Students use English effectively for technical or non-technical topics orally or in wirtten form.
Students become effective in using computer, computer-aided drafting, design, analysis, and presentation
Students have good communicatino skills with a tendency to work in teams, and are able to work effectively as a member of an interdisciplinary team
Students become aware of the technical and ethical responsibilities, as well as being inquisitive and innovative

Course Content
WeekTopicsStudy Materials _ocw_rs_drs_yontem
1 INTRODUCTION, The meaning of Design, Mechanical Engineering Design, The Phases of Design, Shigley's book (Referans Book) Chapter 1
2 Design Considerations, Factor of safety, Codes and Standards, Economics, Reliability, Safety and Product Liability, Units, Rules for Use of SI Units Shigley's book (Referans Book) Chapter 1
3 MATERIALS; LOAD AND STRESS ANALYSIS Determination of Stress Concentration Factors, Stress concentration Charts, stress concentration and static loads Study Chapters 2, 3, and 4. in Shigley's book (Referans book). Some axamples are gieven as homework.
4 DESIGN FOR STATIC STRENGTH; Static strength,stress concentration, Failure theories, Maximum normal stress theory, Maximum shear stress theory, Distortion energy theory Shigley's book (Referans Book) Chapter 5
5 Coulomb-Mohr theory, Maximum-Normal-stress theory for brittle materials, modification of the Mohr theory, failure of brittle materials, Selection of failure criteria Shigley's book (Referans Book) Chapter 5
6 Introduction to Fracture Mechanics, Stress State in a Crack, Critical Stress Intensity Factor, Fracture Toughness Factors, example problem solutions Shigley's book (Referans Book) Chapter 5, homework
7 DESIGN FOR FATIGUE STRENGTH; Introduction, Approach to fatigue failure in analysis and design, Fatigue llife methods, The endurance limit, Shigley's book (Referans Book) Chapter 6 homework
8 The endurance limit, fatigue strength, endurance limit mod. Factors, stress concentration and notch sensitivity Shigley's book (Referans Book) Chapter 6 homework
9 Characterizing fluctuating stresses, fatigue failure criteria for fluctuating stress, Torsional fatiue strength, Stress due to combined loading, Cumulative fatigue damage, Surface fatigue strength Shigley's book (Referans Book) Chapter 6, homework assigment
10 SHAFT AND SHAFT COMPONENTS; Shaft materials, shaft layout, Shaft design for stress, Deflection considerations,Critical speeds for shafts, Misc. Shaft components, limits and fits Shigley's book (Referans Book) Chapter 7, homework assigment and the term project
11 MIDTERM EXAM Repeat the sections including the last chapter, grasp the teories and approaches, solve problems.
12 THE DESIGN OF SCREWS, FASTENERS, AND CONNECTIONS; Thread Standards and Definitions The Mechanics of Power Screws, Threaded Fasteners, Joints-fasteners stiffness, joints member stiffness, Bolt strength Shigley's book (Referans Book) Chapter 8, homework assigment
13 Tension joints, Relating bolt torque to bolt tension, statically loaded tension joints with preload, Gasketed joints, Fatigue loading of tension joint Shigley's book (Referans Book) Chapter 8, homework assigment
14 Bolted and Riveted Joints Loaded in Shear, Example problem solutions, Shigley's book (Referans Book) Chapter 8, homework assigment
15 WELDED BRAZED AND BONDED JOINTS; Welding, Butt and Fillet welds, Streses in welded joints in Torsion, Streses in welded joints in Bending, The Strength of welded joints, Static and fatigue loading, Resistance welding, Bonded joints Shigley's book (Referans Book) Chapter 9, Homework assignment
16-17 Final Exam Prepare yourself for final exam

Recommended or Required Reading
Additional Resources