Wood is a smart composite material Anatomy of the cell wall

5
3/5/2018 1 Term Project Option! Course Grading and Evaluation Attendance to Monday’s sessions: 40% 10 reflection sheets: 60% OR 7 reflection sheets: 40% + Team Term Project: 20% Project Ideas (or come up with your own) Fabricate and non‐destructively test one or more skateboards Build and non‐destructively test a small wood grid shell Fabricate and destructively test a CLT panel Wood is a smart composite material Anatomy of the cell wall

Transcript of Wood is a smart composite material Anatomy of the cell wall

Page 1: Wood is a smart composite material Anatomy of the cell wall

3/5/2018

1

Term Project Option!

Course Grading and Evaluation• Attendance to Monday’s sessions: 40%• 10 reflection sheets: 60%

OR7 reflection sheets: 40% + Team Term Project: 20%

Project Ideas (or come up with your own)• Fabricate and non‐destructively test one or more skateboards• Build and non‐destructively test a small wood grid shell• Fabricate and destructively test a CLT panel

Wood is a smart composite materialAnatomy of the cell wall

Page 2: Wood is a smart composite material Anatomy of the cell wall

3/5/2018

2

Wood vs. bamboo micro‐fibril angle

Wood fiber Bamboo

Fiber orientation is optimized for stressAnatomy of the cell wall

Page 3: Wood is a smart composite material Anatomy of the cell wall

3/5/2018

3

Advanced hockey stick design 

Bending – axial stress (tension and compression)

Page 4: Wood is a smart composite material Anatomy of the cell wall

3/5/2018

4

Torsion – pure shear stress

Composite stacking sequence

Inside a ski:

Page 5: Wood is a smart composite material Anatomy of the cell wall

3/5/2018

5