Microcomputed tomography (mCT) is an advanced technique developed in the medical field and currently used in various areas of society to perform non-destructive testing on various materials, such as continuous fiber-reinforced composites, enabling internal evaluation of the material under loading conditions. Samples of additively manufactured composites reinforced with continuous Kevlar fibers and glass fiber were subjected to compression at two pressure levels (240 and 280 psi) using a pneumatic pressure cell transparent to the microtomograph, designed in the laboratory and optimized for maximum safety within the microtomograph. The results obtained from the mCT tests are digital images with a resolution of 34 μm in .DICOM format, a characteristic of this type of equipment. The digital images are segmented and concatenated to extract the characters necessary to calculate the displacement fields. During asymmetric bending, the (mCT) was a tool that helped observe the behavior of glass and Kevlar fibers and the short carbon fiber matrix (Onyx) under non-uniform stresses, providing important in situ information for the mechanical characterization and design optimization of composites in advanced structural applications. Differences in displacement were observed for three pressure levels (0, 240, and 280 psi), as well as opposite displacements for tension and compression. Finally, it was observed that the short carbon fiber (8 μm in diameter) embedded in the matrix exhibited transparency due to resolution.