I'm interested in what tools and instruments are used in measuring recoil acceleration, impact forces, and bending modes are experienced by various parts of the rifle. I pose the question here because I presume scopes and bases are among the most well studied exterior mounted rifle fixtures.
For example, if I wanted to measure chamber pressure, I could purchase something like this: http://www.shootingsoftware.com/pressure.htm .
I can obviously calculate an approximate peak acceleration via basic physics, however, this provides neither the acceleration profile over time (as can be seen by in the figure of post 2727321), nor the acceleration at various nodes on the rifle given the mechanical damping of the components (e.g. the acceleration and vibration modes experienced at the tip of the barrel is certainly different than that experienced at the scope, rails, accessories, etc.) - see here: http://www.varmintal.com/amode.htm .
I presume that most development efforts proceed through 3D FEM (via ANSYS?) with an acceleration profile applied at the mounting point. However, this profile should have been measured at one point in time and should also be dependent on a particular rifle.
I haven't been able to find any commercially available tools for accomplishing this measurement. So I'm wondering if most manufacturers evaluate survival of peak acceleration criteria rigorously or more empirically (e.g. no POA shift after x rounds of 50 bmg).
I am fairly familiar with IMUs, accelerometers, strain gauges, and the like, so I'm wondering, from those more in the know...what tools are you using to evaluate your product in the lab before it hits the field? Are they proprietary tools developed in house, are you using ad hoc development board type solutions, is there a commercial tool I'm not finding, or are you just going straight to field evaluation? Moreover, if you do have such a tool, how do you ensure appropriate mounting for a trustworthy measurement?
TIA
For example, if I wanted to measure chamber pressure, I could purchase something like this: http://www.shootingsoftware.com/pressure.htm .
I can obviously calculate an approximate peak acceleration via basic physics, however, this provides neither the acceleration profile over time (as can be seen by in the figure of post 2727321), nor the acceleration at various nodes on the rifle given the mechanical damping of the components (e.g. the acceleration and vibration modes experienced at the tip of the barrel is certainly different than that experienced at the scope, rails, accessories, etc.) - see here: http://www.varmintal.com/amode.htm .
I presume that most development efforts proceed through 3D FEM (via ANSYS?) with an acceleration profile applied at the mounting point. However, this profile should have been measured at one point in time and should also be dependent on a particular rifle.
I haven't been able to find any commercially available tools for accomplishing this measurement. So I'm wondering if most manufacturers evaluate survival of peak acceleration criteria rigorously or more empirically (e.g. no POA shift after x rounds of 50 bmg).
I am fairly familiar with IMUs, accelerometers, strain gauges, and the like, so I'm wondering, from those more in the know...what tools are you using to evaluate your product in the lab before it hits the field? Are they proprietary tools developed in house, are you using ad hoc development board type solutions, is there a commercial tool I'm not finding, or are you just going straight to field evaluation? Moreover, if you do have such a tool, how do you ensure appropriate mounting for a trustworthy measurement?
TIA
