Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the general governing equations of electromagnetic acoustic
  transducers   In this paper, we present the general governing equations of electrodynamics
and continuum mechanics that need to be considered while mathematically
modelling the behaviour of electromagnetic acoustic transducers (EMATs). We
consider the existence of finite deformations for soft materials and the
possibility of electric currents, temperature gradients, and internal heat
generation due to dissipation. Starting with Maxwell's equations of
electromagnetism and balance laws of nonlinear elasticity, we present the
governing equations and boundary conditions in incremental form in order to
solve wave propagation problems of boundary value type.

30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex