Functional polymer nanocomposites offer futuristic properties by the association of inorganic additive micro-/nanostructures into the polymers. Stimuli-responsive polymeric composites enable to detect mechanical disturbance such as tearing, impact, strain, and pressure by optical sensors. Since the accurate real-time detection of the change in mechanical loading is vital for the construction and industrial fields, the use of colorimetric pressure elements in a static body is important for the prediction of catastrophic failures. In this study, three polymer/particle composite sensor systems will be presented. By transferring the optical activity (triboluminescence of europium tetrakis (dibenzoylmethide) triethylammonium, coherent reflection of silica colloids, and plasmonic coupling of Au nanoparticles) of the additives into various polymeric matrices having different mechanical features, the impact, strain, and pressure sensors are developed for practical applications, respectively. These optical systems were separately associated with various polymeric systems and sensor properties were discussed.