CHEM-E2105 - Wood and Wood Products, 12.01.2021-15.04.2021

Topic outline

• Materials
  • 

    Introduction File

    PDF document

    Not available unless: You belong to L01 (Oodi)

    To join the Zoom session, beginning at 08:15, please follow this link: https://aalto.zoom.us/j/66216379192

    
    

    In this session we will cover:
    

    • Information about the course and background to wood and wood products
    • Wood formation, environmental factors, wood structure, basic terms and concepts

  • 

    Wood structure and anatomy File

    PDF document

    Not available unless: You belong to L01 (Oodi)

    To join this class, please follow the link below. We will cover the following topics during this session:

    • Knots and spiral grain
    • Technical properties and wood anatomy
    • Cell types and characteristics
    • Softwood microstructure
    • Hardwood microstructure
    • Reaction wood

    Join Zoom Meeting
    https://aalto.zoom.us/j/67176501533

    
    

    
    

  • 

    The cell wall and mass-volume relationships File

    PDF document

    Not available unless: You belong to L01 (Oodi)

    To join the class today, which will begin at 08:15, please follow the link below. In this session we will cover:

    • The wood cell wall:

    1. Chemical composition
    2. The microfibril
    3. Cell wall structure (how the microfibrils are arranged)

    • Mass-volume relationships

    Join Zoom Meeting 
    

    https://aalto.zoom.us/j/67685191434

    
    

  • 

    Wood-water relationships 1 File

    PDF document

    Not available unless: You belong to L01 (Oodi)

    In this sessions, we will cover the topics listed below. To join the class, please follow the instructions given at the bottom.    

    • States of water in wood
    • Moisture content
    • Fiber Saturation Point
    • Equilibrium Moisture Content  
    • Sorption

    
    

    Join Zoom Meeting 
    

    https://aalto.zoom.us/j/66229907862

    
    

  • 

    Wood-water relationships II File

    PDF document

    Not available unless: You belong to L01 (Oodi)

    In today's class, we will cover the topic listed below. To join the class, beginning at 08:15, please follow this link:  https://aalto.zoom.us/j/66905213244

    • Moisture buffering
    • Heat of sorption
    • Dimensional stability 

  • 

    Mechanical properties I: elastic and inelastic behaviour File

    PDF document

    Not available unless: You belong to L01 (Oodi)

    Today, we'll begin the discussion about the mechanical properties of wood and will cover the topics listed below. As usual, the session will begin at 08:15!

    
    

    To join the class, please use this link: https://aalto.zoom.us/j/63447686556

    
    

    Topics covered in this session:

    • The cell wall as a composite laminate
    • Laminate theory
    • Functions of the cell wall layers
    • Strength and failure of wood, considering wood as a composite laminate
    • Defects in wood and their effect on the properties of wood

    
    

  • 

    Mechanical properties II: fracture and toughness File

    PDF document

    Not available unless: You belong to L01 (Oodi)

    In this session, we will consider why wood is a tough material under certain circumstances and can be used as a structural material. We will consider what makes wood tough!   

    To join the Zoom session, which will start at 08:15, please follow the link below:

    Join Zoom Meeting
    https://aalto.zoom.us/j/67288575184

  • 

    Mechanical properties III: long-term behavior: creep, stress relaxation and fatigue File

    PDF document

    Not available unless: You belong to L01 (Oodi)

    To join class, please follow the link below. As usual, we will begin at 08:15. The topics covered will be:

    •Creep in timber and wood products

    •Stress relaxation and implications for wood processing and modification

    •Fatigue

    
    

    Mark Hughes is inviting you to a scheduled Zoom meeting.

    Join Zoom Meeting
    https://aalto.zoom.us/j/61220530344

    
    

  • 

    Sawnwood and veneer-based products File

    PDF document

    Not available unless: You belong to L01 (Oodi)

    As usual, class will begin at 08:15. To join the session, please follow the link below. In this session, we will cover: 

    • Sawnwood: principles of production
    • Veneer based products: principles of plywood & LVL manufacture

    Join Zoom Meeting: https://aalto.zoom.us/j/65788458655

    
    

  • 

    Veneer and veneer-based products File

    PDF document

    Not available unless: You belong to L01 (Oodi)

    Tomorrow we will continue with the theme of plywood, LVL and veneer. To join the class, please follow the link below.

    Join Zoom Meeting: https://aalto.zoom.us/j/62091486251

    
    

  • 

    Veneer and veneer-based products File

    PDF document

    Not available unless: You belong to L01 (Oodi)

    This book chapter accompanies the slides for the session about plywood, LVL and veneer!

  • 

    Sample home exam File

    PDF document

    Not available unless: You belong to L01 (Oodi)

    Here is a sample exam paper to take a look at. The "home exam" will be open for one week and should be completed with the aid of literature. Please remember to use good quality sources (peer reviewed literature is the best) when answering the questions. 

  • 

    Manufacture of particleboard File

    PDF document

    Not available unless: You belong to L01 (Oodi)

    In this session, we will take a look at the manufacture of particleboard and now the raw materials and process parameters affect the development of board properties. To join the class, beginning at 08:15, please follow the link below: 

    Join Zoom Meeting: https://aalto.zoom.us/j/69467584994

     

  • 

    Wood-based panels - an introduction for specialists File

    PDF document

    Not available unless: You belong to L01 (Oodi)

    This publication gives a nice introduction to wood-based panels!