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Coursera

Fatigue Failure in Different Fields of Engineering

E-Learning Development Fund via Coursera

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Overview

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In recent years, owing to global competition and greater need of customers for safety, durability, and reliability of products, there has been a considerable tendency to improve quality in various industries. In this regard, fatigue is one of the major reasons of industrial failures, which is sometimes caused by lack of awareness or attention by the designer and other parts of industry like R&D. The aim of this course is to introduce MSc graduates, Ph.D. students, and engineers working in industry with a short review of the basics of fatigue in different fields of engineering. To this end, it is attempted to express the general concept of the phenomenon using unconscious reactions of the human body to daily works and then to illustrate other aspects through simple examples. The topics cover common challenges that engineers should consider to study the causes of component failure.
The contents of this course include 12 years of my activities and experience in academic and industry. In summary, I recommend that the following steps be taken to understand these lessons fully.
• Take the online class;
• Do a testing exam at the end of each week to make sure you have a good understanding of the content;
• Do your homework and submit it for evaluation;
• After finishing the online course, you will enter the final exam.

Syllabus

  • Introduction
    • The first module of our course will give you a brief overview of fatigue failure. You'll know why it is so important and what damage can be prevented understanding this phenomenon. At the end of the module we will analyze how the fatigue of the human body is related to material fatigue.
  • Real examples of fatigue failure in various industries
    • Unlike most researchers’ opinion, the fatigue phenomenon and its failure is not limited to the mechanical and material engineering. This phenomenon occurs in all technical and industrial fields owing to the importance of this type of failure and its financial and mortality damage. In this module, several examples in various fields of engineering are briefly presented.
  • Fatigue design criteria and design flowchart
    • The main purpose of this module is to design and manufacture a new component from a fatigue viewpoint. You'll learn a flow of designing a component and go through every step of it.
  • Classification of fatigue loads and life estimation
    • In this module you'll learn about: different types of fatigue loads; features of S-N diagram and high-cycle fatigue life approach; effect of mean stress on HCF life; various cycle counting techniques using J-rain software.
  • Solve fatigue problems using the formula and FE simulation
    • In this module we'll solve various problems by using the relationships expressed in the previous module and finite element simulation using ANSYS Workbench.
  • Improvement of fatigue properties of metallic materials
    • In this module you'll learn about: different mechanical methods to improve the fatigue behavior of metallic materials; basic concepts of the shot peening process; effects of the SP process on the grain size and residual stress distribution and on the S-N curve and fatigue strength; thermal operating and Plating; effects of the machining process on the residual stress distribution.

Taught by

Kazem Reza Kashyzadeh

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