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| Course Description |
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| Course Name |
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Machine Elements Iı |
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| Course Code |
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ME 356 |
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| Course Type |
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Compulsory |
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| Level of Course |
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First Cycle |
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| Year of Study |
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3 |
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| Course Semester |
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Spring (16 Weeks) |
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| ECTS |
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5 |
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| Name of Lecturer(s) |
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Prof.Dr. NECDET GEREN
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| Learning Outcomes of the Course |
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Knows the type and use of mechanical springs
Obtains stress and deflection expressions and determines stress and deflections on helical springs
Designs and analyzes compression, tension and torsional springs under static and fatigue loads considering their critical frequencies.
Selects appropriate bearing by knowing characteristics of journal and rolling contact bearings.
Selects ball, roller and tapered rolling contact bearings by considering the bearing loads, and applies hem in design applications under lubrication.
Knows the type of lubrication forms (hydrodynamic, hydrostatic, boundary lubrication etc.) and selects the appropriate one.
Designs journal bearings under pressure-fed or under hydrodynamic conditions considering the bearing optimization technique.
Knows the type of gears and selects the appropriate one for an application
Designs all types of gears (spur, helical, bevel and worm gears) used on gear boxes
Knows the characteristics of clutches, brakes, couplings and flywheels.
Designs principal types of mechanical elements
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| Mode of Delivery |
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Face-to-Face |
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| Prerequisites and Co-Prerequisites |
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None |
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| Recommended Optional Programme Components |
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Those who didn´t take ME-351, shouldn´t take this lecture |
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| Aim(s) of Course |
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The aim of this lecture is to teach the characteristics of the principal types of mechanical members and to teach the design methods of machine members including shafts, mechanical springs, gears, journal bearings, selection of rolling contact bearings etc. |
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| Course Contents |
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Welding, Bonding, and the Design of permanent joints
Mechanical springs
Rolling Contact Bearings
Lubrication and Journal Bearings
Gearings - General
Spur and Helical Gears
Bevel and Worm Gears
Clutches, Brakes, Couplings, and Flywheels
Flexible Mechanical Elements
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| Language of Instruction |
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English |
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| Work Place |
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Classroom |
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Course Outline /Schedule (Weekly) Planned Learning Activities |
| Week | Subject | Student's Preliminary Work | Learning Activities and Teaching Methods |
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1 |
MECHANICAL SPRINGS; Stresses in Helical Springs
Deflection of Helical Springs, Extension Springs, Compression Springs, Stability,Spring Materials, |
Study Shigley´s Reference Book Chapter 10 |
Presentations, discussion and problem solutions. |
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2 |
Critical Frequency of Helical Springs, Fatigue Loading, Helical compression spring design for fatigue loading, Extension springs, Helical Torsion Springs, Belleville Springs, Miscellaneous Springs |
Study Shigley´s Reference Book Chapter 10 and solve the homework assigment |
Presentations, discussion and problem solutions. seeing spring examples |
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3 |
ROLLING CONTACT BEARINGS; Bearing types, bearing life, bearing load life at rated reliability, bearing survival, relating load, life and reliability, |
Study Shigley´s Reference Book Chapter 11 and solve the homework assigment |
Presentations, discussion , seeing bearings and problem solutions. |
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4 |
Combined radial and thrust loading, Variable loading, Selection of Ball and Straight Roller Bearings, Selection of Tapered Roller Bearings, Design assesment, Lubrication, Mounting and Enclosure |
Study Shigley´s Reference Book Chapter 11 and solve the homework assigment |
Presentations, discussion, and problem solutions. |
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5 |
LUBRICATION AND JOURNAL BEARINGS:Types of Lubrication, Viscosity, Petroff´s Law, Stable Lubrication, Thick-Film Lubrication, Hydrodynamic Theory, Design Considerations, The relations of the variables, |
Study Shigley´s Reference Book Chapter 12 and solve the homework assigment |
Presentations, discussion, and problem solutions. |
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6 |
Clearence, Pressure-Fed Bearings, Loads and materials, Bearing Types, Thrust Bearings, Boundary- Lubricated Bearings |
Study Shigley´s Reference Book Chapter 12 and solve the homework assigment |
Presentations, discussion, and problem solutions. |
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7 |
GEARS-General, Types of gears, Nomenclature, Conjugate Action, Involute Properties, Fundamentals, Contact Ratio, interference, The Forming of Gear Teeth, |
Study Shigley´s Reference Book Chapter 13 and solve the homework assigment |
Presentations, discussion, and problem solutions |
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8 |
Staight bevel gears, parallel helical gears, Worm gears, Tooth systems, Gear trains, force analysis for all gears |
Study Shigley´s Reference Book Chapter 13 and solve the homework assigment |
Presentations, discussion, and problem solutions |
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9 |
SPUR AND HELICAL GEARS, The Lewis bending equation, Surface Durability, AGMA Stress and Strength equations, all related design factors based on AGMA |
Study Shigley´s Reference Book Chapter 14 and solve the homework assigment |
Presentations, discussion, and problem solutions |
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10 |
BEVEL and WORM GEARS; Bevel gearing, Bevel gear stress and strengths, AGMA equation factors,Straight bevel analysis, Design of a straight-Bevel gear mesh, Worm gearing, design and anlaysis |
Study Shigley´s Reference Book Chapter 15 and solve the homework assigment |
Presentations, discussion, and problem solutions |
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11 |
MIDTERM EXAM |
Prepare yourself for the exam by studying the related chapters and solving problems |
Vocational questions and design/analysis problems are asked in the EXAM |
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12 |
CLUTCHES, BRAKES, COUPLINGS, AND FLYWHEELS; Statics, Internal-Expanding rim clutches and brakes, External-contracting rim clutches and brakes, band-type clutches and brakes, frictional contact axial clutches |
Study Shigley´s Reference Book Chapter 16 and solve the homework assigment |
Presentations, discussion, and problem solutions |
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13 |
Cone clutches and brakes, energy considerations, temperature rise, friction materials,miscellaneous clutches and couplings, flywheels. |
Study Shigley´s Reference Book Chapter 16 and solve the homework assigment |
Presentations, discussion, and problem solutions |
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14 |
FLEXIBLE MECHANICAL ELEMENTS; Belts, Flat-Belt Drives, V-Belts, Roller Chain, Rope Drives, Wire Rope- |
Study Shigley´s Reference Book Chapter 17 and solve the homework assigment |
Presentations, discussion, and problem solutions |
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15 |
FINAL EXAM |
Prepare yourself for the exam by studying the related chapters and solving problems |
Vocational questions and design/analysis problems are asked in EXAM |
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16/17 |
MAKE-UP EXAM |
Analyse the reason of final exam failure and Prepare yourself for the exam by studying the related chapters and solving problems |
Vocational questions and design/analysis problems are asked in EXAM |
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Required Course Resources |
| Resource Type | Resource Name |
| Recommended Course Material(s) |
 Shigley´s Mec. Eng. Design R. G. BUDYNAS, J. K. NISBETT 9 th SI Edition
Fund. of Mach. Elem. B.J. HAMROCK
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| Required Course Material(s) | |
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Assessment Methods and Assessment Criteria |
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Semester/Year Assessments |
Number |
Contribution Percentage |
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Mid-term Exams (Written, Oral, etc.) |
1 |
60 |
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Homeworks/Projects/Others |
5 |
40 |
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Total |
100 |
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Rate of Semester/Year Assessments to Success |
40 |
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Final Assessments
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100 |
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Rate of Final Assessments to Success
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60 |
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Total |
100 |
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| Contribution of the Course to Key Learning Outcomes |
| # | Key Learning Outcome | Contribution* |
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1 |
Students gain a command of basic concepts, theories and principles in mechanical engineering |
5 |
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2 |
Student become equipped with the basic knowledge of math, science and engineering |
5 |
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3 |
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 |
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4 |
Students become equipped with a variety of skills and knowledge regarding engineering techniques |
5 |
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5 |
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. |
5 |
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6 |
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 |
5 |
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7 |
Students take initiative in identification, design, development and use of a product or production process. |
5 |
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8 |
Students become aware of the necessity of lifelong learning and continuously self-renew |
3 |
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9 |
Students use English effectively for technical or non-technical topics orally or in wirtten form. |
5 |
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10 |
Students become effective in using computer, computer-aided drafting, design, analysis, and presentation |
2 |
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11 |
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 |
2 |
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12 |
Students become aware of the technical and ethical responsibilities, as well as being inquisitive and innovative |
3 |
| * Contribution levels are between 0 (not) and 5 (maximum). |
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| Student Workload - ECTS |
| Works | Number | Time (Hour) | Total Workload (Hour) |
| Course Related Works |
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Class Time (Exam weeks are excluded) |
14 |
3 |
42 |
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Out of Class Study (Preliminary Work, Practice) |
14 |
5 |
70 |
| Assesment Related Works |
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Homeworks, Projects, Others |
5 |
2 |
10 |
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Mid-term Exams (Written, Oral, etc.) |
1 |
2 |
2 |
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Final Exam |
1 |
2 |
2 |
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Total Workload: | 126 |
| Total Workload / 25 (h): | 5.04 |
| ECTS Credit: | 5 |
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