Primitive Archer
Main Discussion Area => Bows => Topic started by: Lukasz Nawalny on February 07, 2017, 03:10:56 pm
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Short article about several bow woods properties with my little help
https://www.google.pl/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0ahUKEwj2orGB3f7RAhWqBZoKHWSbAKAQFggjMAE&url=https%3A%2F%2Fwww.degruyter.com%2Fdownloadpdf%2Fj%2Fffp.2016.58.issue-4%2Fffp-2016-0021%2Fffp-2016-0021.xml&usg=AFQjCNEDL8vJd8bfEu8qmw1zUtZlklIjIg&sig2=qLRNy98O7m5aG1fOvtDAig&bvm=bv.146094739,d.bGs
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interesting read, thanks for posting Lukasz
the metric "work to maximum load" was used in testing wood's suitability for various applications years ago, but not so much nowadays.
"work to maximum load" is discussed here also, in a paper on what makes for the opposite of good bow wood
https://www.fpl.fs.fed.us/documnts/usda/tb342.pdf
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I am not very good at reading these reports but one thing I wish they would do is not test for destruction. A bow is considered ruined often long before it breaks. Testing within its elastic limits might be more useful.
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Many wood strength charts show that It is called " stress at proportional limit"
eta. the link willie showed tells you this.
One thing that also bears investigating is whether wood does also undergo strain hardening. That may explain the hard set versus plastic set observations.
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What we need is a generous gazillionaire boyer to investigate this stuff ;D ;D
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an excellent read. I very much appreciated the simplicity and the approach to conclusions made. This lesson will stick for sure.