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Nonlinearity of Piano hammers help

  1. Apr 24, 2010 #1
    I am doing a research essay in high school on researching the nonlinearity of piano hammers, but I am stuck on planning the experiment. Basically my topic is like this paper http://paws.kettering.edu/~drussell/Publications/pianohammer.pdf. However, since I am only in high school, I have trouble understanding some of the concepts, and that is why I cannot plan an experiment. I tried to ask a teacher, but this is a supposed to be an independent research essay and I am not allowed help from the school staff. So, any help would be greatly appreciated! Thanks!
     
  2. jcsd
  3. Apr 25, 2010 #2

    Pythagorean

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    Gold Member

    Would you mind reading through it and asking specific questions as you come across things you're having difficulty understanding?
     
  4. Apr 25, 2010 #3
    Wow. I was looking at the paper cited and the references listed.
    This is a high school assignment? Yikes.
    Anyway, you came to the right place if you can ask specific questions like Pythagorean suggests.
     
  5. Apr 25, 2010 #4
    The main question I have is how to measure the compression of the felt in the equation F=K*c^p. (where c is compression of the felt). I am having trouble in designing this lab around finding the compression of felt. If anyone could help that would be great
     
  6. Apr 25, 2010 #5
    I do not know this subject at all, but I did see these statements in the paper you cited, page1. You probably already read this:

    "Dynamic measurements of the force and felt compression,
    observed during the impact between a piano hammer and a
    rigidly fixed string, have been obtained by Suzuki [6, 7],
    Boutillon [8], and Yanagisawa and Nakamura [9]. Data may
    be fit rather well to Eq.(1), with typical values of p ranging
    from 2.3 to 3.6 for voiced piano hammers."
     
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