TÜRKÇE
ENGLISH
Information
| Code | MMB309 |
| Name | Machine Elements I |
| Semester | 5. Semester |
| Duration (T+A) | 3-0 (T-A) (17 Week) |
| ECTS | 4 ECTS |
| National Credit | 3 National Credit |
| Teaching Language | Türkçe |
| Level | Lisans Dersi |
| Type | Normal |
| Mode of study | Yüz Yüze Öğretim |
| Catalog Information Coordinator | Doç. Dr. KERİMCAN ÇELEBİ |
Course Goal
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.
Course Content
1-Introduction to Mechanical Engineering Design 2-Materials3 Load and Stress analysis4 Deflection and Stiffness5 Failures resulting from static loading6 Fatigue Failures resulting from variable loading7 Shafts and Shaft Components8 Screws, Fasteners and the Design of Non permanent Joints 9 Welding, Bonding, and the Design of permanent joints 10 Mechanical springs
Course Precondition
None
Resources
Engineering Design, George E. Dieter, L.C. Schmidt, Mc-Graw Hill, 5th edition Ders Notu ve Kitaplar
Notes
Lecture Notes
Course Learning Outcomes
| Order | Course Learning Outcomes |
|---|---|
| LO01 | Knows machine design process and its steps. |
| LO02 | Applies factor of safety and Knows safety philosophy and applies it in design. |
| LO03 | Determines the stresses and defeclections on machine members subjected to single, 3D or combined loading. |
| LO04 | Knows static and fatigue failure theories and applies these to design machine members to prevent failures resulting from static or variable loading. |
| LO05 | Designs shafts and shaft components considering both deflection and stresses. Determines limits and fits for mating parts. |
| LO06 | Designs power screws for various needs. |
| LO07 | Selects suitable fasteners for all types of connections. |
| LO08 | Designs nonpermanent joints subjected to static and variable loading with preload. |
| LO09 | Selects the suitable connections for permanent joints. |
| LO10 | Designs and analysis permanent joints made using arc and resisting welding, bonding etc. |
Relation with Program Learning Outcome
| Order | Type | Program Learning Outcomes | Level |
|---|---|---|---|
| PLO01 | Beceriler - Bilişsel, Uygulamalı | Understanding the fundamentals of Mechanical Engineering | 5 |
| PLO02 | Beceriler - Bilişsel, Uygulamalı | Being well equipped with knowledge of Mathematics, Science and Basic Engineering | 4 |
| PLO03 | Yetkinlikler - Öğrenme Yetkinliği | Having capability of designing and executing experiments; examining the results and data | |
| PLO04 | Yetkinlikler - Öğrenme Yetkinliği | Being well equipped with various engineering techniques and skills | 4 |
| PLO05 | Yetkinlikler - Öğrenme Yetkinliği | Being able to design a system ,a component or a process with taking into consideration the technical, economic, enviromental, sustainability limitations | 5 |
| PLO06 | Bilgi - Kuramsal, Olgusal | Ability to analyze the applications on a factory without any help, investigate the problems, formulizing and finding a proper solution for the problems | 4 |
| PLO07 | Yetkinlikler - Öğrenme Yetkinliği | Ability to design , developing getting ready for use of a product or manufacturing process | 5 |
| PLO08 | Yetkinlikler - Bağımsız Çalışabilme ve Sorumluluk Alabilme Yetkinliği | Understanding the importance of life-time learning and being updated | 2 |
| PLO09 | Beceriler - Bilişsel, Uygulamalı | Having advanced speaking and writing English skills | |
| PLO10 | Yetkinlikler - Öğrenme Yetkinliği | Using Computer effectively; for computed aided design, analysis and illustrating | |
| PLO11 | Yetkinlikler - Bağımsız Çalışabilme ve Sorumluluk Alabilme Yetkinliği | Being prone to teamwork, well communication with others, adaptability to interdisciplinary teams | |
| PLO12 | Bilgi - Kuramsal, Olgusal | Being aware of the technical and ethical responsibility, being curious and innovative | 2 |
Week Plan
| Week | Topic | Preparation | Methods |
|---|---|---|---|
| 1 | INTRODUCTION, The meaning of Design, Mechanical Engineering Design, The Phases of Design, | Read the related topics in the lecture notes and reference books | Öğretim Yöntemleri: Anlatım, Tartışma, Problem Çözme |
| 2 | Design Considerations, Factor of safety, Codes and Standards, Economics, Reliability, Safety and Product Liability, Units, Rules for Use of SI Units | Read the related topics in the lecture notes and reference books | Öğretim Yöntemleri: Anlatım, Tartışma, Problem Çözme |
| 3 | MATERIALS; LOAD AND STRESS ANALYSIS Determination of Stress Concentration Factors, Stress concentration Charts, stress concentration and static loads | Read the related topics in the lecture notes and reference books | Öğretim Yöntemleri: Anlatım, Tartışma, Problem Çözme |
| 4 | DESIGN FOR STATIC STRENGTH; Static strength,stress concentration, Failure theories, Maximum normal stress theory, Maximum shear stress theory, Distortion energy theory | Read the related topics in the lecture notes and reference books | Öğretim Yöntemleri: Anlatım, Tartışma, Problem Çözme |
| 5 | Coulomb-Mohr theory, Maximum-Normal-stress theory for brittle materials, modification of the Mohr theory, failure of brittle materials, Selection of failure criteria | Read the related topics in the lecture notes and reference books | Öğretim Yöntemleri: Anlatım, Tartışma, Problem Çözme |
| 6 | Introduction to Fracture Mechanics, Stress State in a Crack, Critical Stress Intensity Factor, Fracture Toughness Factors, example problem solutions | Read the related topics in the lecture notes and reference books | Öğretim Yöntemleri: Anlatım, Tartışma, Problem Çözme |
| 7 | DESIGN FOR FATIGUE STRENGTH; Introduction, Approach to fatigue failure in analysis and design, Fatigue llife methods, The endurance limit, | Read the related topics in the lecture notes and reference books | Öğretim Yöntemleri: Anlatım, Tartışma, Problem Çözme |
| 8 | Mid-Term Exam | Read the related topics in the lecture notes and reference books | Ölçme Yöntemleri: Yazılı Sınav |
| 9 | The endurance limit, fatigue strength, endurance limit mod. Factors, stress concentration and notch sensitivity | Read the related topics in the lecture notes and reference books | Öğretim Yöntemleri: Anlatım, Tartışma, Problem Çözme |
| 10 | Characterizing fluctuating stresses, fatigue failure criteria for fluctuating stress, Torsional fatiue strength, Stress due to combined loading, Cumulative fatigue damage, Surface fatigue strength | Read the related topics in the lecture notes and reference books | Öğretim Yöntemleri: Anlatım, Tartışma, Problem Çözme |
| 11 | SHAFT AND SHAFT COMPONENTS; Shaft materials, shaft layout, Shaft design for stress, Deflection considerations,Critical speeds for shafts, Misc. Shaft components, limits and fits | Read the related topics in the lecture notes and reference books | Öğretim Yöntemleri: Anlatım, Tartışma, Problem Çözme |
| 12 | THE DESIGN OF SCREWS, FASTENERS, AND CONNECTIONS; Thread Standards and DefinitionsThe Mechanics of Power Screws, Threaded Fasteners, Joints-fasteners stiffness, joints member stiffness, Bolt strength | Read the related topics in the lecture notes and reference books | Öğretim Yöntemleri: Anlatım, Tartışma, Problem Çözme |
| 13 | Tension joints, Relating bolt torque to bolt tension, statically loaded tension joints with preload, Gasketed joints, Fatigue loading of tension joint | Read the related topics in the lecture notes and reference books | Öğretim Yöntemleri: Anlatım, Tartışma, Problem Çözme |
| 14 | Bolted and Riveted Joints Loaded in Shear, Example problem solutions, | Read the related topics in the lecture notes and reference books | Öğretim Yöntemleri: Anlatım, Tartışma, Problem Çözme |
| 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 | Read the related topics in the lecture notes and reference books | Öğretim Yöntemleri: Anlatım, Tartışma, Problem Çözme |
| 16 | Term Exams | Read the related topics in the lecture notes and reference books | Ölçme Yöntemleri: Yazılı Sınav |
| 17 | Term Exams | Read the related topics in the lecture notes and reference books | Ölçme Yöntemleri: Yazılı Sınav |
Student Workload - ECTS
| Works | Number | Time (Hour) | Workload (Hour) |
|---|---|---|---|
| Course Related Works | |||
| Class Time (Exam weeks are excluded) | 14 | 3 | 42 |
| Out of Class Study (Preliminary Work, Practice) | 14 | 3 | 42 |
| Assesment Related Works | |||
| Homeworks, Projects, Others | 0 | 0 | 0 |
| Mid-term Exams (Written, Oral, etc.) | 1 | 7 | 7 |
| Final Exam | 1 | 18 | 18 |
| Total Workload (Hour) | 109 | ||
| Total Workload / 25 (h) | 4,36 | ||
| ECTS | 4 ECTS | ||