TÜRKÇE
ENGLISH
Information
| Code | ME351 |
| Name | Machine Elements I |
| Semester | 5. Semester |
| Duration (T+A) | 3-0 (T-A) (17 Week) |
| ECTS | 5 ECTS |
| National Credit | 3 National Credit |
| Teaching Language | İngilizce |
| Level | Lisans Dersi |
| Type | Normal |
| Mode of study | Yüz Yüze Öğretim |
| Catalog Information Coordinator | Prof. Dr. NECDET GEREN |
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-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
Course Precondition
non
Resources
Shigley's Mechanical Engineering Design, version 8/e onwards (versions 9,10/e) Richard G. Budynas, J. Keith Nisbett
Notes
Fund. Of. Mach. Elem. B.J. HAMROCK Engineering Design, George E. Dieter, Mc-Graw Hill
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 | Bilgi - Kuramsal, Olgusal | Student become equipped with the basic knowledge of math, science and engineering | 4 |
| PLO02 | Bilgi - Kuramsal, Olgusal | Students gain a command of basic concepts, theories and principles in mechanical engineering | 5 |
| PLO03 | Bilgi - Kuramsal, Olgusal | 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 | 1 |
| PLO04 | Bilgi - Kuramsal, Olgusal | Students become equipped with a variety of skills and knowledge regarding engineering techniques | 4 |
| PLO05 | Bilgi - Kuramsal, Olgusal | 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. | 3 |
| PLO06 | Bilgi - Kuramsal, Olgusal | 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 | |
| PLO07 | Bilgi - Kuramsal, Olgusal | Students take initiative in identification, design, development and use of a product or production process. | 4 |
| PLO08 | Beceriler - Bilişsel, Uygulamalı | Students become aware of the necessity of lifelong learning and continuously self-renew | 2 |
| PLO09 | Yetkinlikler - Bağımsız Çalışabilme ve Sorumluluk Alabilme Yetkinliği | Students use English effectively for technical or non-technical topics orally or in wirtten form. | 5 |
| PLO10 | Yetkinlikler - Bağımsız Çalışabilme ve Sorumluluk Alabilme Yetkinliği | Students become effective in using computer, computer-aided drafting, design, analysis, and presentation | |
| PLO11 | Yetkinlikler - Bağımsız Çalışabilme ve Sorumluluk Alabilme Yetkinliği | 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 | |
| PLO12 | Yetkinlikler - Öğrenme Yetkinliği | Students become aware of the technical and ethical responsibilities, as well as being inquisitive and innovative | 2 |
Week Plan
| Week | Topic | Preparation | Methods |
|---|---|---|---|
| 1 | INTRODUCTION, The meaning of Design, Mechanical Engineering Design, The Phases of Design, | Shigley's book (Referans Book) Chapter 1 | Öğretim Yöntemleri: Anlatım |
| 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 | Öğretim Yöntemleri: Anlatım |
| 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. | Öğretim Yöntemleri: Anlatım, Alıştırma ve Uygulama |
| 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 | Öğretim Yöntemleri: Anlatım, Alıştırma ve Uygulama, 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 | Shigley's book (Referans Book) Chapter 5 | Öğretim Yöntemleri: Anlatım, Alıştırma ve Uygulama, Problem Çözme |
| 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 | Öğretim Yöntemleri: Anlatım, Alıştırma ve Uygulama, Problem Çözme |
| 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 | Öğretim Yöntemleri: Anlatım, Soru-Cevap, Alıştırma ve Uygulama, Problem Çözme |
| 8 | Mid-Term Exam | Shigley's book (Referans Book) Chapter 6 homework | Ölçme Yöntemleri: Yazılı Sınav |
| 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 | Öğretim Yöntemleri: Anlatım, Alıştırma ve Uygulama, Problem Çözme |
| 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 | Öğretim Yöntemleri: Anlatım, Alıştırma ve Uygulama, Proje Temelli Öğrenme |
| 11 | MIDTERM EXAM | Repeat the sections including the last chapter, grasp the teories and approaches, solve problems. | Ölçme Yöntemleri: Yazılı Sınav |
| 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 | Öğretim Yöntemleri: Anlatım, Alıştırma ve Uygulama, Problem Çözme |
| 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 | Öğretim Yöntemleri: Anlatım, Alıştırma ve Uygulama, Problem Çözme |
| 14 | Bolted and Riveted Joints Loaded in Shear, Example problem solutions, | Shigley's book (Referans Book) Chapter 8, homework assigment | Öğretim Yöntemleri: Anlatım, Alıştırma ve Uygulama, 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 | Shigley's book (Referans Book) Chapter 9, Homework assignment | Öğretim Yöntemleri: Anlatım, Alıştırma ve Uygulama, Problem Çözme |
| 16 | Term Exams | Prepare yourself for final exam | Ölçme Yöntemleri: Yazılı Sınav |
| 17 | Term Exams | Prepare yourself for final exam | 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 | 12 | 12 |
| Final Exam | 1 | 18 | 18 |
| Total Workload (Hour) | 114 | ||
| Total Workload / 25 (h) | 4,56 | ||
| ECTS | 5 ECTS | ||