Parameter identification and determination: this is the weakest point of nonlocal models, as in my opinion there is no explicit link between the length scale (e.g. nonlocal radius) and the available fracture properties (strength and fracture energy). We developed a procedure to link all local and spatial parameters with the given fracture properties. This helps obtain consistency in the model predictions, as any choice of a length scale will directly affect the other local parameters of the constitutive model. This aims at practical applications of nonlocal models, while relaxing the more physical issues (that the length scale is a material property and hence invariant). Therefore for a given set of fracture properties, the calibration procedure result in model prediction (almost) invariant with any arbitrary choice of nonlocal radius (see below)