Composite layup design

Discussion in 'Boat Design' started by BarendGrobler, Apr 8, 2008.

  1. BarendGrobler
    Joined: Mar 2007
    Posts: 58
    Likes: 2, Points: 8, Legacy Rep: 6
    Location: Canada

    BarendGrobler Junior Member

    Hey all
    When designing a composite layup (after calculating pressures etc and designing the layup accordingly); what safety factor should one allow for production imperfections?
    let me explain more clearly: to do an accurate/optimal design I've found it's an iteration between class rules and CLT. Now my question is this, when calculating the layup strength, surely you can't just use theoretical strength values for the layup; surely when building a large boat, the layup will not be as "perfect" as the layups used in material tests to get those theoretical strengths. so how (other than testing on-site produced samples) do you compensate for this in your design; what S.F. is a good rule of thumb, if there is one?
     
    BarendGrobler, Apr 8, 2008
    #1
Loading...
Similar Threads
  1. egeabi

    Is Papanikolaou's work for estimation ship weight applicable for composite hulls?

    egeabi, Mar 21, 2024, in forum: Boat Design
    Replies:
    3
    Views:
    556
    egeabi
    Mar 23, 2024
  2. Teddy Cian

    Composite Construction Method/ Difficulty

    Teddy Cian, Oct 5, 2023, in forum: Boat Design
    Replies:
    10
    Views:
    1,238
    Rumars
    Oct 7, 2023
  3. IronPrice

    Composite Gasoline Tanks

    IronPrice, Jul 3, 2023, in forum: Boat Design
    Replies:
    43
    Views:
    3,733
    IronPrice
    Jul 27, 2023
  4. Barry

    Strength of Fiberglass/composite Repairs

    Barry, Mar 14, 2023, in forum: Boat Design
    Replies:
    17
    Views:
    2,026
    rwatson
    Mar 22, 2023
  5. ToMeK

    Structures - Composite Boat Framing System

    ToMeK, Feb 18, 2022, in forum: Boat Design
    Replies:
    5
    Views:
    4,144
    Ad Hoc
    Feb 20, 2022
  6. Stefano Dilena

    Composite multi-chine 38-40 feet sailboat plans

    Stefano Dilena, Feb 2, 2022, in forum: Boat Design
    Replies:
    7
    Views:
    2,503
    tane
    Feb 26, 2022
  7. an2reir

    Composite High Speed Boat Structural Hull Bottom Grid

    an2reir, Sep 28, 2021, in forum: Boat Design
    Replies:
    37
    Views:
    5,703
    an2reir
    Oct 8, 2021
  8. socalspearit

    Custom 19' all weather, minimalist, strip plank composite 'go fast'

    socalspearit, Sep 2, 2021, in forum: Boat Design
    Replies:
    221
    Views:
    21,818
    socalspearit
    Aug 17, 2023
  9. Cacciatore

    Composite Fuel Tank

    Cacciatore, Dec 14, 2019, in forum: Boat Design
    Replies:
    17
    Views:
    4,130
    ondarvr
    Dec 17, 2019
  10. Cmw505

    Composite Construction Tips.

    Cmw505, Aug 27, 2019, in forum: Boat Design
    Replies:
    13
    Views:
    2,063
    Rumars
    Aug 31, 2019
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.