2025 (Current Year) Faculty Courses School of Materials and Chemical Technology Undergraduate major in Materials Science and Engineering
Strength and Fracture of Inorganic Materials
- Academic unit or major
- Undergraduate major in Materials Science and Engineering
- Instructor(s)
- Toshihiro Isobe / Katsumi Yoshida
- Class Format
- Lecture
- Media-enhanced courses
- -
- Day of week/Period
(Classrooms) - Class
- -
- Course Code
- MAT.C308
- Number of credits
- 200
- Course offered
- 2025
- Offered quarter
- 4Q
- Syllabus updated
- Mar 19, 2025
- Language
- Japanese
Syllabus
Course overview and goals
The course covers elasticity and plasticity as the basis of material strength. In order to understand the strength and fracture phenomena of inorganic materials, students learn the fundamentals of strength science, including stress concentration and stress intensity factor, fracture criterion and energy equilibrium fracture toughness, crack propagation behaviour, fatigue fracture, strength variation and probability theory, and also learn statistical methods of strength. In addition, students learn about material testing methods stipulated in JIS standards and the latest research trends in material strength. Through the above, the aim is to acquire knowledge of inorganic material strength and practical data processing methods.
Course description and aims
By completing this course, students will acquire the following competences.
(1) Concepts of strength and fracture
(2) Statistical methods for strength
(3) Concepts of measurement standards required for practical materials research.
Keywords
Fracture mechanics, mechanical properties, structural materials
Competencies
- Specialist skills
- Intercultural skills
- Communication skills
- Critical thinking skills
- Practical and/or problem-solving skills
Class flow
Work on the lectures and exercises related to the lecture content.
Course schedule/Objectives
| Course schedule | Objectives | |
|---|---|---|
| Class 1 | Elasticity | Understanding of stress components, strain components and Hooke's law. |
| Class 2 | Plasticity | Understanding stress-strain curves, yield conditions and yield surfaces. |
| Class 3 | Fundamentals of strength and fracture of inorganic materials | Understanding the brittleness of ceramics and the material strength and microstructural sensitivities. |
| Class 4 | Stress intensity factor | Understanding stress concentration and stress intensity factors and modes. |
| Class 5 | Criterion of destruction and energetic equilibrium (1) | Understanding of fracture criterion such as energy equilibrium for Mode I and II mixed mode fracture, the maximum circumferential stress theory, the minimum strain energy density theory and the maximum energy release rate theory. |
| Class 6 | Criterion of destruction and energetic equilibrium (2) | Understanding fracture energy and mixing modes. |
| Class 7 | Fracture toughness (1) | Understanding R-curve behavior and stable crack growth. |
| Class 8 | Fracture toughness (2) | Toughness strengthening mechanisms. |
| Class 9 | Strength variability and probability theory of fracture (1) | Understanding the risk of destruction, the weakest link theory and the asymptotic distribution of minimum value. |
| Class 10 | Strength variability and probability theory of fracture (2) | Understanding Weibull distribution functions and Weibull plots.distribution of minimum value. |
| Class 11 | Composite materials, hybrid materials | Understanding composite materials, hybrid materials |
| Class 12 | Material testing methods (1) | Tensile, hardness and impact testing. |
| Class 13 | Material testing methods (2) | Fatigue tests, creep tests, microstructural observations. |
| Class 14 | Thermal shock destruction | Thermal shock parameters and test methods. |
Study advice (preparation and review)
In order to increase the effectiveness of learning, students should refer to the relevant sections of the textbook and handouts and spend approximately 30 minutes each preparing and reviewing (including assignments) the content of "each class".
Textbook(s)
Teaching materials are distributed in T2scholar.
Reference books, course materials, etc.
荒井 正行「初歩からの 材料強度学: 安全なモノ作りのために (機械工学ライブラリ UKM 3) 」
成田 史生・大宮 正毅・荒木 稚子「楽しく学ぶ 破壊力学 」
淡路 英夫 「セラミックス材料強度学」
Evaluation methods and criteria
Comprehensive evaluation taking into account exercises during lectures, final examinations and homework assignments.
Related courses
- MAT.A202: Fundamentals of Mechanics of Materials F
- MAT.A206: Mechanical and Thermal Properties of Materials
Prerequisites
Must have taken "Fundamentals of Mechanics of Materials F" or have equivalent knowledge.
Contact information (e-mail and phone) Notice : Please replace from ”[at]” to ”@”(half-width character).
isobe.t.ad[at]m.titech.ac.jp
Office hours
Contact by e-mail or Slack in advance to schedule an appointment.