Structural Analysis
Three-dimensional non-destructive imaging of textile structures relies on high-resolution x-ray projections to reconstruct the internal geometry of yarns and fabrics. This imaging method is micro-CT tomography, which provides sub-micron detail of fiber orientation, yarn compression, and void distribution. It allows researchers to study the internal architecture of textile assemblies without physical sectioning.
Density Reconstruction
Numerical algorithms process hundreds of two-dimensional x-ray images taken from different angles to create a volumetric model of the specimen. This model differentiates between solid fiber regions, polymer coatings, and empty pore spaces. Analysts utilize this data to evaluate the uniformity of nonwoven structures or the density of woven composites.
Porosity Evaluation
Air permeability and filtration performance depend on the size, distribution, and tortuosity of the pores between fibers. The volumetric data allows direct measurement of these pore networks, which is useful for developing protective garments or high-efficiency filter media. It replaces indirect measurements with direct three-dimensional flow channel analyses.
Damage Characterization
Fatigue testing of protective or industrial fabrics can be monitored to identify internal fiber fractures, delamination, or coating degradation. By imaging the fabric before and after mechanical stress cycles, the specific failure points can be identified. This information helps mills select stronger yarn structures and more resilient resin matrices for high-performance applications.
In bulletproof vests, for example, the scan reveals how yarn layers slide against one another during impact, which informs future weave patterns to improve safety.
