4D material behavior
I use X-ray Computed Tomography (XCT) to understanding how diverse material classes behave in 4D (3D + time).
XCT helps us reveal hierarchical microstructures, which control the complex macroscale behavior in both artificial and natural materials - unraveling these in 4D can help us gain novel insight into material behavior and lead to impactful science
Slip transfer in metals
Slip transfer across grain boundaries plays a critical role in the deformation of polycrystals. Slip transfer is impacted by the 3D grain morphology and the alignment between slip systems across grain boundaries. Using Lab-scale Diffraction Contrast Tomography (DCT) I obtain 3D grain structure non destructively which helps unravel the mechanisms of slip transfer in polycrystals.
REliability of semiconductor packages
Semiconductor packages are integral to the functionality and lifespan of modern electronic devices, influencing everything from smartphones to medical equipment. As these devices operate, they experience thermal cycling, causing temperature fluctuations that stress the semiconductors' internal structures. Over time, this can lead to microscopic changes, potentially affecting the device's efficiency or causing failures. X-ray tomography, offers a deep, non-destructive look into these internal changes, helping identify weak points or design improvements.
4D study of athletic gear
In the dynamic realm of athletics, both athletes and their equipment are in a perpetual quest for excellence and optimization. Athletic gear undergoes regular enhancements to boost efficiency and performance in diverse sports. X-ray Computed Tomography (XCT), especially its advanced 4D version, offers a non-invasive lens into the internal structures of sports materials, revealing critical insights into their mechanical behavior. These findings, pivotal in understanding gear like soccer balls, and running shoes, have transformative implications for design and manufacturing. By harnessing XCT's revelations, the sports industry can refine gear design and production processes, ensuring athletes receive the utmost in equipment quality and functionality, further sharpening their competitive edge.
4D behavior of composites
In the modern engineering landscape, composites are foundational, offering a blend of lightness and strength essential for industries like automotive, manufacturing, and aeronautics. Central to their effectiveness is the microstructure, the detailed arrangement of their components, which dictates their macroscale behavior. Using techniques like X-ray Computed Tomography (XCT) I seek to provide a non-invasive insight into these microstructures, revealing how manufacturing processes impact them. Additionally, in-situ mechanical testing allows us to understand how these microstructures react under stress in 4D, offering critical insights into areas like fatigue and fracture behavior. Through these methods, the relationship between a composite's micro and macro behaviors is demystified, guiding the creation of advanced, purpose-fit materials.
Time resolved sTUDy OF BioLOGICAL materials
X-ray tomography has emerged as an invaluable tool for analyzing biological materials, offering a non-invasive glimpse into their intricate internal structures. By capturing detailed 3D images of these materials, researchers can unveil the unique microarchitectures that grant organisms their specialized functionalities, from the lightweight yet durable structure of bird bones to the resilient fibers in plant stems. These insights, derived from nature's time-tested designs, are inspiring innovations in bio-inspired engineering, leading to the development of advanced materials and structures that mimic the efficiency, resilience, and adaptability found in the natural world.
4D behavior of Geological materials
The Earth, through billions of years of activity, has given rise to diverse geological materials, from bedrocks to deserts sands to meteorites. These materials, formed under intense thermal and mechanical stresses, possess unique microstructures that chronicle their formation processes. Techniques like 4D X-ray Computed Tomography (XCT) allow scientists to non-invasively explore these internal structures, revealing the dynamic changes within and offering insights into their formation, composition, and behavior. Essentially, geological materials are natural records of Earth's and the cosmos' history, and with tools like 4D XCT, we can decode their tales, enhancing our comprehension of our planet and the universe.
Cone Penetration in Sands
Cone penetration in sands visualized with DIC and XCT
Calibration Chamber Studies
Preparation of sand samples using air-pluviation technique
Digital Image Correlation (DIC)
Images analysed using DIC to obtain displacement and strain fields
X-ray Computed Tomography
Agar- and resin-impregnated samples scanned using X-ray Microscope