Course Description

Course Code Semester Teoric Credit ECTS
Prerequisite Courses
Recommended Elective Courses
Course Language Türkçe
Level of the Course Doktora
Course Type SECMELI
Course Coordinator Doç. Dr. AHMET DEMİRER
Course Assistants Res.Asst. Secil Eksi
Course Category
Course Objective
Evaluation of fatigue failure of machine parts subjected to cycling loadings and in design against to fatigue, to gain presentation of knowledge and skill about the relevant parameters based on material, heat treatment and part. To gain design experience with problems and/or examples on to students
Course Content
Definition of fatigue failure and mechanism. Types of fatigue loading. Fatigue strength of materials and calculation of experimentally. Fatigue strength diagrams. In design against to fatigue classic method and applications. Low-cycle fatigue. Basics of fracture mechanics. Crack growth relations and in design against to fatigue fractue mechanics approach
Learning Outcomes of the Course Teaching Methods Measurement Methods
5 - 1 - 2 - 3 - A -
Teaching Methods: 1:Lecture 2:Question-Answer 3:Discussion
Measurement Methods: A:Testing

Course Flow

Week Topics Preliminary
1 Fatigue loading and fatigue fracture, mechanism, impotance and basis effects
2 Microscopic data of fractured parts and loading relations
3 To determine fatigue strength, wohler curve, low-cycle fatigue and long-cycle fatigue areas, to get strain-cycle number curve, statistic methods
4 Using of SMITH diagram in design
5 Material selection for fatigue loading, fatigue properties of steel and cast ironand their diffrences, Wohler and Smith diagrams, basic acceptance on determining materials properties
6 Fatigue behaviour of welded link, effects of heat treatments and results
7 Fatigue of materials in corrosive condition and results
8 Midterm exam
9 Effects of coatings in corrosion fatigue
10 Effect of constructive notchs on fatigue behaviour
11 Effects of surface hardening processes in plain and notched parts to fatigue strength
12 Fatigue properties of plastic and compoiste materials. Calculation of fatigue strength for machine parts
13 In determining fatigue life for cracked parts, fracture mechanics approach and its applicaiton
14 Fatigue phase diagram, numerical examples belogn to classical design in fatigue, to take preventive measures in point of increasing fatigue strength and applications


Lecture Notes
Course Resources

Document Sharing

Contribution of the Course to Program Outcomes

No Program Learning Outcomes Contribution Level
1 2 3 4 5

Evaluation System

Contribution Level Order Percentage of Contribution
AraSinav 1 50
Odev 1 10
Odev 2 10
Odev 4 10
PerformansGoreviSeminer 1 10
Odev 3 10
Total 100
The Ratio of the Semester to Success 40
Final to Success Ratio 60
Total 100

ECTS Workload

Activity Sayısı Time (Hour) Total Workload (Hour)
Course Duration (Including the exam week: 16x Total course hours) 16 3 48
Hours for off-the-classroom study (Pre-study, practice) 16 2 32
Mid-terms 1 7 7
Assignment 4 8 32
Performance Task (Laboratory) 1 10 10
Performance Task (Seminar) 1 5 5
Final examination 1 5 5
Total Workload 139
Total Workload / 25 (h)Toplam İş Yükü /25(s) 5.56
ECTS Credit of the Course 5.56
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