The Minisymposium focuses on non-conventional techniques for solid and fluid mechanics, including experimental, theoretical, and computational aspects. Attention is focused on heterogeneous/multiscale/multiphase/multifunctional materials and fluids and their behaviour, especially in the framework of coupled field problems and with respect to their fracture and failure arising from scale-bridging processes. Topics: • Non-conventional theoretical techniques for description of heterogeneous/multiscale/multiphase/multifunctional materials and fluids: o fractional continuum mechanics, o tolerance and non-asymptotic modeling, o peridynamics, o fractal media, o nonlocal continuum, o relativistic continuum mechanics, o multiscale techniques as combinations of conventional techniques and/or new techniques, etc. • Non-conventional techniques for solving coupled field problems for heterogeneous/multiscale/multiphase/multifunctional materials and fluids (computational aspects including implementation and hardware/software point of view). • New set-ups for experimental testing of heterogeneous/multiscale/multiphase/multifunctional materials and fluids (miniaturized equipment, digital imaging, etc.).