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APS – XSD Presentation, Gantry Computed Tomography
June 28 @ 11:00 am - 12:00 pm CDT
Speaker: Yu-Chung Lin, Dept. of Materials Science and Chemical Engineering
Stony Brook University
Title: Development of Gantry Computed Tomography and Study of 3D Printing via In Situ Synchrotron X-ray Scattering
Date: Friday, June 28, 2024
Time: 11:00 a.m.
Location: 431 / C010
Abstract
The development of instruments in the field of X-ray technology is crucial for the advance of science. scientific advancement. X-ray computed tomography, as a nondestructive characterization technique, has been widely applied in scientific research, medical examination, and industrial quality inspection to reveal the internal details of objects. In the first part of the talk, I will present the project that I am leading to develop and commission a Gantry computed tomography equipment, focusing on image quality improvement by resolving ring artifacts at air/object boundary. The aim of the project is to establish an automatic workflow encompassing image collection, segmentation and detection applied in industrial production. The project involves hardware modification such as increasing scintillator thickness, upgrading from 1D to 2D anti[1]scatter grid, removing edge detector and installing Tungsten plate. After Passing the image quality evaluation (ring artifact, uniformity, and spatial resolution), the project successfully delivers the equipment. In the second half of the talk, I will discuss utilizing synchrotron X-ray scattering to study the dynamics of the 3D printed materials, addressing knowledge gaps in most post-printing analyses. The in situ multi-modal synchrotron X-ray scattering (SAXS, MAXS and WAXS) with thermal imaging measurement is designed and conducted to study real-time structural evolution of 3D printed polymer at different positions. With a time-resolution below 0.2 s and micron-sized X-ray beam, the study captures the formation of highly oriented ‘shish-kebab’ structure in the core and polymer relaxation at the interface of the 3D printed polymer during the rapid cooling process.