Ultrasound thickness measuring.

Discussion in 'Metal Boat Building' started by gcav, Mar 6, 2018.

  1. gcav
    Joined: Mar 2018
    Posts: 1
    Likes: 0, Points: 1
    Location: Oakvill,on

    gcav New Member

    I know that best measurement would be againstt bare metal.
    How much distortion is added if measuring over paint?

    thx,
    gc
     
  2. gonzo
    Joined: Aug 2002
    Posts: 15,242
    Likes: 948, Points: 123, Legacy Rep: 2031
    Location: Milwaukee, WI

    gonzo Senior Member

    It will depend on the ratio of paint thickness to base material thickness. The ultrasonic measuring devices use a value called "celerity" which is characteristic of each material. The paint has a different value than the base material. You could adjust the measurement by averaging the celerity values. A problem with measuring layered materials, is that there will be secondary, out of phase echoes.
     
Loading...
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.