This course teaches mechanical properties of composite materials starting from a topic of material selection for the production of frame of high performance bicycle. Various models to consider mechanical properties are presented. Characteristic values representing mechanical properties such as specific strength and specific modulus are explained.
The aim of this course is to obtain a sound understanding of fundamental models to consider mechanical properties of composite materials. Exercise problems are assigned during the course and explanations of the problems are provided.
By completing this course, students will be able to:
1) Understand the specific strength and the specific modulus that are important values to consider mechanical properties of materials.
2) Understand the fundamental methods of calculation to obtain characteristic values such as averaged Young's modulus to evaluate composite materials as structural materials.
composite materials, specific strength, specific modulus, CFRP (carbon fiber reinforced plastics), breaking length, CNT (carbon nano fiber), rule of mixtures, averaged Young's modulus, iso-strain condition, Voigt approximation, iso-stress condition, Reuss approximation, elastic stiffness, elastic compliance, micromechanics, metal matrix composite materials.
|✔ Specialist skills||Intercultural skills||Communication skills||Critical thinking skills||Practical and/or problem-solving skills|
Exercise problems are assigned during the course. To prepare for class, students should read the course schedule section and check what topics will be covered. Required learning should be completed outside of the classroom for preparation and review purposes.
|Course schedule||Required learning|
|Class 1||Characteristics of composite materials: Material selection for the production of frame of high performance bicycle.||Weight, strength and elastic coefficient of representative CFRP (carbon fiber reinforced plastics), and comparison of the values with those of typical metallic materials.|
|Class 2||Specific strength and specific modulus of composite materials.||Definitions of specific strength and specific modulus.|
|Class 3||Exercise problems on specific strength and specific modulus and explanations of the problems.||Understanding and evaluation of specific strength and specific modulus.|
|Class 4||CNT (carbon nano fiber) and CFRP (carbon fiber reinforced plastics),||Topics on CNT (carbon nano fiber) and CFRP (carbon fiber reinforced plastics),|
|Class 5||Averaged Young's modulus of composite material.||Understanding of rule of mixtures, averaged Young's modulus, iso-strain condition and iso-stress condition,|
|Class 6||Exercise problems on averaged Young's modulus of composite material and explanations of the problems.||To solve exercise problems on averaged Young's modulus of composite material.|
|Class 7||Elastic deformation of metal matrix composite materials.||Mechanical properties of metals containing plastically undeformable dispersoids.|
|Class 8||Exam for this course.||Students will be assessed on their understanding of composite materials.|
Students' knowledge of mechanical properties of composite materials and methods of calculation to evaluate the properties will be assessed. Exams 70% and exercise problems 30%.