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  • Users: mechj
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  1. mechj

    Turning Thin Walled Stainless Steel

    I have a problem and am not sure what to do. I have a part and it is to be made from stainless steel round bar stock. The wall thickness that is called out is .030" and the length is 1.00". The id tolerance is +/- .001. Any ideas on how this can be machined without crushing the part? The...
  2. mechj

    Using fnval in for loop SLOW

    Hello all, I am writing a code for some data analysis, and I have to fit a spline to the local max and min points in data. To fit the spline I am using fun1 = csape(x1,y1) fun2 = csape(x2,y2) I then have to find the mean of the two splines. For that I use the following code. (I did not want...
  3. mechj

    Signal Extraction

    Hello all, I am working a problem, and am not sure how to proceed. Hoping someone can point me in the right direction. I have a system response that is made up of many modes of vibration. The system is nonlinear (Modal Analysis Fails!), due to the inclussion of of a series of coulomb...
  4. mechj

    Gas Meter Fittings 45LT, 30LT, 10LT

    Does anyone know where I can find any information on the threas sizes of gas meter fittings. Specifically the 45LT, 30LT, and 10LT fittings? I have searched google and looked in the machinist hand book but have found very little. Only info so far is the pitch 11 1/2. If anyone has any...
  5. mechj

    Beam Natural Frequencies

    I have a question regarding natural frequencies of cantilever beams. Under what conditions does loading affect the natural frequencies of the beam? Does this happen when the loading shows up in the boundary condition (ie an axial load applied to the free end)? What about when the beam is...

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