Wearable moiré-based mechanical strain indicator for overstretch prevention in high-mobility physical training

Abstract

A passive, non-electronic wearable device (100) provides real-time visual biofeedback of soft tissue (130) elongation to prevent overstretch injuries. The device (100) comprises an elastic base layer (110) having a first periodic micro-pattern (112) and an elastic overlay layer (120) having a second periodic micro-pattern (122). The layers are superimposed and configured to elongate synchronously with the underlying soft tissue (130). When the soft tissue (130) reaches a predetermined biomechanical strain threshold, such as 22 to 34 percent elongation corresponding to a pre-pain safety limit, the relative geometric displacement between the first micro-pattern (112) and the second micro-pattern (122) generates a macroscopic Moiré interference pattern (140). This optical-mechanical interference visually exposes a hidden warning indicator (114) without requiring electronic components, power sources, or external sensors. The system can be integrated into athletic garments or worn as a standalone band.

Dependencies are inferred from the claim text.