Creaseinduced

Creaseinduced is a descriptive term used in materials science to denote phenomena, processes, or property changes that originate at creases, folds, or permanent deformations in a material. It is commonly applied to thin sheets, films, textiles, laminates, and other planar structures where a crease forms a distinct geometric discontinuity that can alter mechanical or transport behavior.

The underlying idea is that creases concentrate strain and modify local stiffness, diffusion paths, and frictional contact. Under loading, a crease can become a preferred site for crack initiation, delamination, or wrinkle formation, leading to accelerated failure compared with unreached regions. In layered composites, crease regions may weaken interlaminar bonding along the fold. In polymer films, creases can trap residual stresses or change permeability along the crease line. In two‑dimensional materials, crease-induced strain can influence electronic, optical, or catalytic properties.

Measurement and modeling of creaseinduced effects typically involve experimental techniques such as digital image correlation to map local strains around creases, spectroscopy or electron microscopy to assess structural changes, and mapping methods like Raman analysis. Computational approaches often treat a crease as a localized hinge or discontinuity within finite element models to capture the stress concentration and resulting deformation patterns.

Applications and implications of creaseinduced phenomena span manufacturing and design, including controlled creasing to direct failure modes, durability assessment of folded or laminated products, and the development of flexible electronics where crease locations affect performance. The term is not universally standardized and is used descriptively across disciplines to summarize crease-related changes rather than to denote a single mechanism.