Strength and Fracture of Materials

ISOGAI, Takeshi
  Elective  2 credits
【Mechanical and Precision System・2nd semester】
19-1-1361-2327

1.
Outline
In this course, the following topics are studied;
(1) Basic concept of the strength and fracture of materials
(2) Understanding of the different types of fracture such as yielding, brittle fracture, fatigue,
 creep, corrosion, and the interaction among them
(3) Unified concept on fracture, which pays attention to metals, ceramics, polymers and
 composite materials
(4) Basis of linear fracture mechanics
2.
Objectives
The objective of the course is to provide students with a basic understanding of strength
and fracture of materials.
3.
Grading Policy
Your overall grade in the class will be decided based on followings:
-  Term-end examinination (60%)
-  Mini tests in the class (25%)
-  "Self-made resume" submitted in the 15th lesson (15%)
Feedback will be given by commentary of the mini tests during class.
4.
Textbook and Reference
Textbook: "Strength and Fracture of Materials" Akihiro Tsuchida, Akira Ueno and others,
     Corona Company (2011) ISBN 978-4-339-04476-8
Materials: Distribute prints as necessary.
Reference book: "Introduction to engineering materials" by M. F. Ashby,
        translated by Yoshinori Horiuchi, Uchida Roukanho Publication (1999) 
        ISBN 4-7536-5093-6
        "Strength and Fracture of Materials" edited by The Japan Society
        for Materials Science, Japan Society for Materials Science (2005)
        ISBN 4-901381-26-1
        "Strength and Fracture of Materials(2nd Edition)" by Takeo Yokohori,
        Iwanami Shoten (1974) *
        * Please use it in the library etc. due to out of print
5.
Requirements (Assignments)
· Please review the foundation of materials science studied in "Engineering Material 1"
 and foundation of mechanics of materials studied in "Strength of Materials 1" before attending class.
· Please read the relevant part of the textbook before each lesson. (1.5 hours)
· Please review the important items you learned in class by using texts and notes.
 Please answer the exercises again. (1.5 hours)
· As preparatory learning on the 15th lesson, the main points (regime) of the contents learned in the 1st to the 14th lesson are summarized into a designated paper of A4 size.
 This "Self-made resume" can be used in term-end examination.
· Preparation other than above will be instructed in class.
6.
Note
The diagrams/tables will be presented by using a projector and explanations will be added on the blackboard. It is important to acquire the habit of noting important matters by the students. Handwritten notes can be brought with the "handwritten regime" at term-end exam.
7.
Schedule
1. Introduction to "Strength and Fracture of Materials": What is "Strength and Fracture of   Materials" ? Ideal strength, Diversity and similarity of fracture
2. Strength of materials under statig loading 1: Tensile test, Yielding,
  Work hardening
3. Strength of materials under statig loading 2: Plastic deformation, Dislocation,
  Slip deformation
4. Strength of materials under statig loading 3: Material strengthening method,
  Ductile fracture, Brittle fracture
5. Foundations of elastic mechanics: Equilibrium equation of stress, Relationship
  between strain and displacement, Generalized Hook's law
6. Introduction to fracture mechanics 1: Stress intensity factor, Stress field near
  the crack tip
7. Introduction to fracture mechanics 2: Plasticity ahead of the crack tip,
  Correction of Irwin, Correction of Dagdale
8. Introduction to fracture mechanics 3: Energy release rate, Fracture toughness test
9. Fatigue 1: Historical fatigue accident, High cycle fatigue and Low cycle, SN curve
10. Fatigue 2: Fatigue crack growth, Threshould stress intensity factor
11. Strength of materials at high temperature 1: Creep deformation, Creep damage,
  Mechanism of creep
12. Strength of materials at high temperature 2: Life estimation method, High temperature   fatigue, Creep fatigue interactions
13. Environmental strength: Oxidation, Stress corrosion cracking, Corrosion fatigue
14. Application of statistics to the strength of materials: Foundation of statistics,  
  Reliability, Statistical properties on strength of materials, Normal 
  distribution, Weibull distribution, Application of statistics to strength
  of materials
15. Overall summary and Term-end examination
1.
Outline
In this course, the following topics are studied;
(1) Basic concept of the strength and fracture of materials
(2) Understanding of the different types of fracture such as yielding, brittle fracture, fatigue,
 creep, corrosion, and the interaction among them
(3) Unified concept on fracture, which pays attention to metals, ceramics, polymers and
 composite materials
(4) Basis of linear fracture mechanics
2.
Objectives
The objective of the course is to provide students with a basic understanding of strength
and fracture of materials.
3.
Grading Policy
Your overall grade in the class will be decided based on followings:
-  Term-end examinination (60%)
-  Mini tests in the class (25%)
-  "Self-made resume" submitted in the 15th lesson (15%)
Feedback will be given by commentary of the mini tests during class.
4.
Textbook and Reference
Textbook: "Strength and Fracture of Materials" Akihiro Tsuchida, Akira Ueno and others,
     Corona Company (2011) ISBN 978-4-339-04476-8
Materials: Distribute prints as necessary.
Reference book: "Introduction to engineering materials" by M. F. Ashby,
        translated by Yoshinori Horiuchi, Uchida Roukanho Publication (1999) 
        ISBN 4-7536-5093-6
        "Strength and Fracture of Materials" edited by The Japan Society
        for Materials Science, Japan Society for Materials Science (2005)
        ISBN 4-901381-26-1
        "Strength and Fracture of Materials(2nd Edition)" by Takeo Yokohori,
        Iwanami Shoten (1974) *
        * Please use it in the library etc. due to out of print
5.
Requirements (Assignments)
· Please review the foundation of materials science studied in "Engineering Material 1"
 and foundation of mechanics of materials studied in "Strength of Materials 1" before attending class.
· Please read the relevant part of the textbook before each lesson. (1.5 hours)
· Please review the important items you learned in class by using texts and notes.
 Please answer the exercises again. (1.5 hours)
· As preparatory learning on the 15th lesson, the main points (regime) of the contents learned in the 1st to the 14th lesson are summarized into a designated paper of A4 size.
 This "Self-made resume" can be used in term-end examination.
· Preparation other than above will be instructed in class.
6.
Note
The diagrams/tables will be presented by using a projector and explanations will be added on the blackboard. It is important to acquire the habit of noting important matters by the students. Handwritten notes can be brought with the "handwritten regime" at term-end exam.
7.
Schedule
1. Introduction to "Strength and Fracture of Materials": What is "Strength and Fracture of   Materials" ? Ideal strength, Diversity and similarity of fracture
2. Strength of materials under statig loading 1: Tensile test, Yielding,
  Work hardening
3. Strength of materials under statig loading 2: Plastic deformation, Dislocation,
  Slip deformation
4. Strength of materials under statig loading 3: Material strengthening method,
  Ductile fracture, Brittle fracture
5. Foundations of elastic mechanics: Equilibrium equation of stress, Relationship
  between strain and displacement, Generalized Hook's law
6. Introduction to fracture mechanics 1: Stress intensity factor, Stress field near
  the crack tip
7. Introduction to fracture mechanics 2: Plasticity ahead of the crack tip,
  Correction of Irwin, Correction of Dagdale
8. Introduction to fracture mechanics 3: Energy release rate, Fracture toughness test
9. Fatigue 1: Historical fatigue accident, High cycle fatigue and Low cycle, SN curve
10. Fatigue 2: Fatigue crack growth, Threshould stress intensity factor
11. Strength of materials at high temperature 1: Creep deformation, Creep damage,
  Mechanism of creep
12. Strength of materials at high temperature 2: Life estimation method, High temperature   fatigue, Creep fatigue interactions
13. Environmental strength: Oxidation, Stress corrosion cracking, Corrosion fatigue
14. Application of statistics to the strength of materials: Foundation of statistics,  
  Reliability, Statistical properties on strength of materials, Normal 
  distribution, Weibull distribution, Application of statistics to strength
  of materials
15. Overall summary and Term-end examination