Non‐destructive analysis of hollow‐shaped single fibers using X‐ray computed tomography.

A commercial high‐resolution X‐ray computed tomography (CT) was utilized for non‐destructive analysis of single fibers. The micro‐CT apparatus was employed because it is applicable to both colored and colorless fibers. A sample preparation using adhesive sheets was demonstrated, and the method is similar to typical tape‐lift sample collection method in crime cases. Different cross‐sectional shapes of nylon and polyester single fibers were non‐destructively distinguished, and the method is applicable to all types of fibers. Cross‐sectional areas, aperture ratios, and volumes of individual fibers were directly and automatically measured using the open‐source software. The observed parameters were within a coefficient of variation of 3%. In addition, a mass of a single fragment of a fiber can be estimated when the local density is given. [ABSTRACT FROM AUTHOR]