A PhD student in materials science is analyzing the microstructure of a composite. She notes that a cross-section contains 180 microfibers. If 1/4 are carbon, 1/3 are glass, and the rest are aramid fibers, how many aramid fibers are present?

Tue, 05 May 2026 14:20:35 +0000

PhD Student Analyzes Composite Microstructure: Precise Fiber Composition Breakdown In a recent analysis of a composite material's cross-section, a PhD student in materials science has provides a precise breakdown of its microfiber composition, revealing the proportions and actual counts of three key fiber types: carbon, glass, and aramid. The study focuses on a sample containing a total of 180 microfibers, offering a compelling case study in fiber dispersion and material design. According to the data, 1/4 of the fibers are carbon fibers. Calculating this: (1/4) × 180 = 45 carbon fibers Next, 1/3 of the fibers are composed of glass fibers, which computes to: (1/3) × 180 = 60 glass fibers