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/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.

Full Text

What is claimed is:

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.
Timeline
Filed
03/09/2026
Published
07/09/2026
Granted
Not Available
IPC Codes(2)
A41D 27/08:Trimmings; Ornaments
A41D 13/00:Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches (helmets A42B 3/00; clothing affording protection against chemical agents or for use at high altitudes A62B 17/00; life-saving garments for use at sea, diving suits B63C; bulletproof or armoured clothing F41H; clothing affording protection against radiation G21F 3/02)