Micro-CT Applications for Particle Analysis

Micro-CT Applications for Particle Analysis

2D & 3D particle size analysis of micro-CT images

This article demonstrates that 3D micro-CT is a powerful tool for the analysis of particle sizes and states that “3D analysis of individual particles is the most versatile method to obtain quantitative information about the size, shape and arrangement of particles. 2D image analysis may lead to significant errors (bias)”. A key benefit offered by micro-CT compared to other analysis methods is the combination of 3D visualization with 3D quantitative measurement. The study used a SkyScan 1172 desktop micro-CT.

READ MORE on using micro-CT to study particles, from RESEARCH GATE.


Using micro-ct to investigate nanofluid droplet sorption in dry powder beds

Many scientific and engineering applications utilize liquid droplet sorption in dry porous media, but it is difficult to visualize for analysis due to the opacity of the porous media used in most of the applications. This study utilized micro-CT scanning to characterize the sorption profiles of nanofluid droplets in PMMA powder beds. Wetting the powder bed improved visualization by augmenting the density of the saturated region. The study concluded that micro-CT offers an efficient method to study the sorption process in an opaque porous medium.

READ MORE on using micro-CT to study liquid droplet sorption, from SCIENCE DIRECT.

Non-invasive characterization of particle morphology of natural sands

Particle sizes and shapes influence the mechanical response of granular materials, such as soils. Earlier investigations of particle shape have usually assessed size using sieving, and provided two-dimensional results. “This paper makes use of recent developments in three-dimensional imaging technologies to characterize the internal features of a soil in 3D including quantification of particle morphology.”

READ MORE on using micro-CT to study sand particles, from SCIENCE DIRECT.


Investigation of particle fracture during fatigue of aluminum 2024

Identifying and monitoring early signs of fatigue damage helps researchers understand the influence of material microstructure that can lead to conditions more likely to develop fatigue damage. The study’s approach combined in situ SEM, DIC, and AE monitoring, allowing observations at the scale that particle fracture occurs. Nondestructive measurements provided by optical, acoustic, and X-ray methods were combined. “To validate surface observations of such early signs of damage, X-ray Micro-Computed Tomography (μ-CT) scans were made to investigate the relation between particle size and chemical balance with local grain structure and crystallography.” Each particle’s chemical composition was found to play a role in its potential for fracture.

READ MORE on using micro-CT to study particles, from RESEARCH GATE.

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