Title: Numerical and Experimental Surface Inductive Method for Steel Fibers

Author(s): C. V. Voigt, R. Pieralisi, M. J. C. Bonfim, S. H. P. Cavalaro, and R. A. Medeiros-Junior

Publication: Materials Journal

Volume: 119

Issue: 2

Appears on pages(s): 269-279

Keywords: nondestructive testing; numerical simulation; steel fibers; surface inductive

DOI: 10.14359/51734402

Date: 3/1/2022

Abstract:
The characterization of fiber content in construction materials is predominantly done through destructive tests, restraining the assessment of the preferential orientation of the fibers. Inductive methods can be a nondestructive alternative to characterize these materials. This paper shows the numerical and experimental development of an inductive test capable of determining steel fiber content and preferential orientation in thin slab elements based exclusively on surface measurements. The variables in this study were the fiber content (30 and 60 kg/m3), the size of the thin slab elements, and the measurement position of the developed equipment. The results showed the capacity of the method to determine the concentration and the preferred orientation of the fibers using a portable, small, and low-cost equipment. Inductance measurements were higher in the thin slab elements with 60 kg/m3 of fibers, allowing better identification of the preferential orientation of the fibers.