Course title
4M5540001
Advanced Strength of Materials

 HASHIMURA Shinji
Course content
In critical design of mechanical structures, not only cost reduction but also weight reduction are demanded. In order to realize the critical design, we should use many kinds of materials such as composite materials for mechanical structures and have to secure safety and reliabilities.
The most important factor is safety in the mechanical design and we have to learn fracture mechanics and strength of materials. In the first half of this class, you learn basic theories of fracture mechanics and metal fatigue. You learn the strengths of threaded fasteners in the second half.
Purpose of class
Students learn fracture mechanics and metal fatigue in this class in order to be able to design the critical mechanical parts and structures.
And students also learn basic theory for strength of threaded fasteners such as tightening method, loosening and fatigue.
Goals and objectives
  1. To understand and explain phenomenon of material fracture
  2. To understand and explain stress intensity factor
  3. To understand phenomenon of Metal fatigue
  4. To understand and explain the tightening method of bolted joints.
  5. To understand and explain bolt loosening mechanism.
  6. To understand and explain fatigue of bolted joint.
Language
Japanese
Class schedule

 Class schedule HW assignments (Including preparation and review of the class.) Amount of Time Required
1． Guidance and Outline Review of stress, strain, stress conversion and strength calculation. 100minutes
Preparation of stress concentration and stress intensity factor. 100minutes
2． Fracture mechanics and Stress Intensity Factors Review of stress intensity factor and small scale yielding. 100minutes
Investigation of metal fatigue and accident examples due to fatigue. 100minutes
3． Metal fatigue: Fatigue strength Review of metal fatigue. 100minutes
Preparation of Size Effect in metal fatigue . 100minutes
4． Metal fatigue: Size effect Review of Size Effect in metal fatigue . 100minutes
Preparation of Notch Effect in metal fatigue . 100minutes
5． Metal fatigue: Notch effect Review of Notch Effect in metal fatigue . 100minutes
Preparation of Manson-Coffin low. 100minutes
6． Metal fatigue: Low cycle fatigue Review of low cycle fatigue. 100minutes
Preparation of modified Miner's rule 100minutes
7． Metal fatigue: Fatigue under various loading Review of modified Miner's rule 100minutes
Investigation of causes of fatigue failure accidents. 100minutes
8． Special lecture Investigate dissimilar materials 120minutes
Preparation of report. 80minutes
9． Bolt strength and property class, Mechanism of bolted joints (1) Preparation for bolt strength and property class, Mechanism of bolted joints 90minutes
Review for bolt strength and property class, Mechanism of bolted joints 110minutes
10． Mechanism of bolted joints (2) Preparation for mechanism of bolted joints 90minutes
Review for mechanism of bolted joints 110minutes
11． Tightening method for bolted joints Preparation for tightening method for bolted joints 90minutes
Review for tightening method for bolted joints 240minutes
12． Loosening of bolted joints Preparation for loosening of bolted joints 90minutes
Review for loosening of bolted joints 110minutes
13． Axial fatigue for bolted joints Preparation for axial fatigue for bolted joints 90minutes
Review for axial fatigue for bolted joints 110minutes
14． Transverse fatigue for bolted joints Preparation for transverse fatigue for bolted joints 100minutes
Review for transverse fatigue for bolted joints 110minutes
Total. - - 2940minutes
Relationship between 'Goals and Objectives' and 'Course Outcomes'

 quiz Reports Total.
1. 10% 5% 15%
2. 10% 5% 15%
3. 15% 5% 20%
4. 10% 5% 15%
5. 10% 5% 15%
6. 15% 5% 20%
Total. 70% 30% -
Evaluation method and criteria
Students are evaluated by five times quiz (70%) and reports (30%).
Students can pass getting 60 points out of total 100 points.
Feedback on exams, assignments, etc.
ways of feedback specific contents about "Other"
Feedback in the class
Textbooks and reference materials
Japanese textbook of Shinji Hashimura, Design Method for Bolted Joints to Avoid Troubles, Nikkan Kogyo Co. Ltd.
References: "Strength of Materials", ISBN 978-4-901381-26-0
Prerequisites
Basic knowledge with regard to strength of materials and material science.
Office hours and How to contact professors for questions
  • 14:50～15:50 of Tuesday, anytime when I’m in my room, except for the special situation.
Regionally-oriented
Non-regionally-oriented course
Development of social and professional independence
  • Course that cultivates an ability for utilizing knowledge
  • Course that cultivates a basic problem-solving skills
Active-learning course
More than one class is interactive
Course by professor with work experience
Work experience Work experience and relevance to the course content if applicable
Applicable
Education related SDGs:the Sustainable Development Goals
  • 4.QUALITY EDUCATION
  • 9.INDUSTRY, INNOVATION AND INFRASTRUCTURE
  • 12.RESPONSIBLE CONSUMPTION & PRODUCTION
Last modified : Sat Sep 09 05:54:59 JST 2023