Research Seminar: Health Monitoring and Rapid Inspection for Large-scale Structures Using Ultrasonic Guided Waves


In recent years, the complexity and dimensions of structures has increased significantly. Thus, the need for structural health monitoring (SHM) and rapid nondestructive inspection (NDI) techniques for those structures is growing rapidly. The long distance propagation properties of ultrasonic guided waves – as opposed to bulk waves – can enable health monitoring and fast inspection, which can lead to a reduction in manufacturing and maintenance costs, as well as extended useful life of large-scale composite structures.

This seminar covers a few critical components towards the application of guided wave-based imaging to real world engineering problems. I will:

  • introduce several recently developed imaging algorithms
  • demonstrate a novel method for dealing with structural complexity
  • discuss the challenges and future research directions in applying the technologies to real-world engineering structures under practical environmental and operational conditions.

The imaging algorithms mentioned offer the following values: improvements in resolution, reductions in artifacts, consideration of the wave dispersion effect, capabilities in super-resolution, utilizations of multi-mode effects, and the provision of information towards damage severity quantification.


Jiaze He is currently a research scholar at the National Institute of Aerospace (NIA) and at the Durability, Damage Tolerance, and Reliability Branch (DDTRB) in NASA Langley Research Center (LaRC). Jiaze is also an adjunct assistant professor at North Carolina State University. In the past, he led collaborative research topics with the Center for Wave Phenomena at Colorado School of Mines and with NASA LaRC’s Nondestructive Evaluation Sciences Branch, respectively. Jiaze’s current research focusses on ultrasonics, structural health monitoring (SHM), non-destructive inspection (NDI), signal processing, and imaging for advanced diagnostics and prognostics. In particular, he develops solutions, considering a variety of perspectives, to overcome the obstacles that hinder applications of ultrasonics-based SHM or NDI techniques to large-scale, complex structures. One of his proposed methods received the Boeing Best Paper Award at the 2017 International Workshop on Structural Health Monitoring (IWSHM).

Additional Information:

For additional details call Diane K. Bierly 863-6491.


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Media Contact: Chris Spallino



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