What are the equations to measure attenuation of stress wave

AI Thread Summary
To measure the attenuation, frequency, and amplitude of stress wave propagation in a metal rod or plate immersed in water, specific equations are required that depend on the measurement method used. The amplitude and frequency of the generated waves are influenced by how vibrations are introduced to the rod. Accurate calculations cannot be made without conducting physical measurements, as these quantities are not derived from theoretical equations alone. Attenuation is also material-dependent, necessitating empirical data for precise evaluation. Therefore, practical experimentation is essential to obtain the desired measurements and calculations.
Kajal shinde
Messages
3
Reaction score
0
what are the equations to measure attenuation, frequency, amplitude of a stress wave propagation of metal rod or plate which is immersed in water or fluid?
 
Physics news on Phys.org
The equations will depend on the method used to measure these quantities.
You need to give more details in order to get more detailed answers.
 
Kajal shinde said:
what are the equations to measure attenuation, frequency, amplitude of a stress wave propagation of metal rod or plate which is immersed in water or fluid?
consider, there is tank filled with water and metal rod immersed into it. when we give vibrations to that rod. due to these waves are generated into water. these waves have some attenuation, frequency, amplitude. to calculate these i want equations related these...
 
You are just repeating what you said in the OP.
You need to do some measurements in order to get these quantities. The amplitude and frequency will depend on how do you produce these vibrations. There is no way to calculate them from nothing, just on the base of some magic equations.

The attenuation will depend on the material. If you want to measure it, you will need again to do some measurements. You could measure the amplitue of the wave at different points along the rod.
 
thanks
 
Thread 'Gauss' law seems to imply instantaneous electric field propagation'
Imagine a charged sphere at the origin connected through an open switch to a vertical grounded wire. We wish to find an expression for the horizontal component of the electric field at a distance ##\mathbf{r}## from the sphere as it discharges. By using the Lorenz gauge condition: $$\nabla \cdot \mathbf{A} + \frac{1}{c^2}\frac{\partial \phi}{\partial t}=0\tag{1}$$ we find the following retarded solutions to the Maxwell equations If we assume that...
Maxwell’s equations imply the following wave equation for the electric field $$\nabla^2\mathbf{E}-\frac{1}{c^2}\frac{\partial^2\mathbf{E}}{\partial t^2} = \frac{1}{\varepsilon_0}\nabla\rho+\mu_0\frac{\partial\mathbf J}{\partial t}.\tag{1}$$ I wonder if eqn.##(1)## can be split into the following transverse part $$\nabla^2\mathbf{E}_T-\frac{1}{c^2}\frac{\partial^2\mathbf{E}_T}{\partial t^2} = \mu_0\frac{\partial\mathbf{J}_T}{\partial t}\tag{2}$$ and longitudinal part...
Thread 'Recovering Hamilton's Equations from Poisson brackets'
The issue : Let me start by copying and pasting the relevant passage from the text, thanks to modern day methods of computing. The trouble is, in equation (4.79), it completely ignores the partial derivative of ##q_i## with respect to time, i.e. it puts ##\partial q_i/\partial t=0##. But ##q_i## is a dynamical variable of ##t##, or ##q_i(t)##. In the derivation of Hamilton's equations from the Hamiltonian, viz. ##H = p_i \dot q_i-L##, nowhere did we assume that ##\partial q_i/\partial...
Back
Top