[Seattle Luthiers Group Notice] April S.L.G. meeting

[David Haxton]

    Greetings, 
    The next meeting of the Seattle Luthiers will be Tuesday, April 12th 7-9 pm at the busniess of Michael Gurian.
    The address for Michael's shop is 5350 30th Ave NW suite H, directions are: go to the Ballard Locks, park in the Locks parking lot (free). As you face the entrance for the Locks, you will see a drive way on your left and then a gate, thru the gate veer to the right, Michael's shop is a large beige metal building at the end of the pier. If you have any trouble Michael's phone # is (206) 467-7990. The normal hour's for the meeting are 7-9 pm. Do to  extra security in the yard where Michael's busniess is located, access is restricted, we will have to have someone on the gate to let people in, so please plan to be no more that 15 minutes late or make arrangements with Michael.
     The speaker will be Evan Davis  

Evan B. Davis earned his PH.D. in 1990 form the University of Washington department of mechanical engineering with the dissertation titled "on the Structural and Acoustic Design of Guitar Soundboards" and is currently a Technical Fellow of the Boeing Company.   He has built a few instruments as a hobbyist making him very respectful of the luthier craft.

Discussion Topic

Musical instruments have evolved though the experimentation of luthiers and feedback from musicians.  I would like to talk about how engineering concepts can be used to explore some of the bounds of the possible design space (without having to build everything).   This will be informal session with lots of opportunities to ask questions. 

Some starting topics: 
How light can you make a soundboard (and still play in tune) ?
The "truth" about strings and fret scales (can you ever truly play in tune) ?
Plate edge conditions (why clamping the edge of the plate is a good idea)
Some ideas on bridge size and high frequency response.
Mode counts how many modes are their to work with ?
What's with that math model of a guitar we see published form time to time


Evan B Davis Ph.D. 
Technical Fellow 
Boeing Commercial Airplanes 

"Anyone can make the simple complicated. 
Creativity is making the complicated simple."  
Charles Mingus 
                         
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