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Politecnico di Milano, SIGMA Lab
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Jiahui Shi

PhD Student · Cycle 38

Supervised by Claudio Sbarufatti and Gabriele Cazzulani

jiahui.shi@polimi.it
ORCID Google Scholar ResearchGate Department page

Research

Jiahui’s research focuses on meta-lens-enhanced guided wave structural health monitoring. Following the progression “Focus broadly, Sense sensitively, Identify clearly,” the work combines regional wave-field design, damage-sensitive backscattered-wave sensing, and probabilistic inference to improve damage detection, localization, and size estimation under noisy conditions.

PhD thesis

Exploitation of Meta-Lenses for Enhanced Ultrasonic Monitoring

Politecnico di Milano

Research in images

Wave-field energy behind a piecewise-designed meta-lens (left) and a classical design (right): the region where E/E max ≥ 0.75 covers 1015.6 mm² against 64.5 mm².
Wave-field energy behind a piecewise-designed meta-lens (left) and a classical design (right): the region where E/Emax ≥ 0.75 covers 1015.6 mm² against 64.5 mm².
Experimental setup: a signal generator and an amplifier drive an actuator on an aluminium plate carrying the meta-lens, and a scanning laser Doppler vibrometer (LDV) measures the wave field, recorded on a PC.
Experimental setup: a signal generator and an amplifier drive an actuator on an aluminium plate carrying the meta-lens, and a scanning laser Doppler vibrometer (LDV) measures the wave field, recorded on a PC.