  Collective mass tensors derived in the cranking approximation to the
adiabatic time-dependent Hartree-Fock-Bogoliubov (ATDHFB) method are employed
in a study of induced fission dynamics. Together with a collective potential
determined in deformation-constrained self-consistent mean-field calculations
based on nuclear energy density functionals, the mass tensors specify the
collective Hamiltonian that governs the time evolution of the nuclear wave
function from an initial state at equilibrium deformation, up to scission and
the formation of fission fragments. In an illustrative calculation of
low-energy induced fission of $^{228}$Th, $^{230}$Th, $^{234}$U, and
$^{240}$Pu, we compare the non-perturbative and perturbative cranking ATDHFB
mass tensors in the plane of axially-symmetric quadrupole and octupole
deformations, as well as the resulting charge yields.
