Department of Mechanics: Seminar: Zahra Sharif Khodaei 2022

Invitation to nondestructive evaluation and structural health monitoring

Course summary

Structural Health Monitoring (SHM) is a modern technology with the potential to significantly improve the maintenance and repair of engineering structures. It can act as a viable alternative to the commonly utilized None-Destructive Inspection (NDI). The basis of SHM is the application of permanently fixed sensors on the structure combined with the necessity of a minimum of manual intervention to monitor the structural integrity. This enables continuous monitoring of the structure and thus detection of the defect at a very early stage to move away from Planned Maintenance and towards Condition Based Maintenance providing longer service life of structures, reduced downtime, and lower maintenance cost. This course provides an overview of prominent structural health monitoring techniques for damage detection and localization utilizing ultrasonic guided waves in composites utilized for aeronautical structures. However, the concepts and techniques are equally applied to other engineering disciplines, such as civil engineering structures, offshore structures, and machinery, to name a few. It will be beneficial to master- and Ph.D.-level students, engineers, and researchers to introduce the concept and possible applications.

Course content

Day 1: Tuesday, 24 May 2022

• 9:30--11:30: Safe-life, fail-safe and Damage Tolerance design principles
• 13:00--15:00: Introduction to the overall concepts of Nondestructive Evaluation and Structural Health Monitoring: motivation, implementation, differences, challenges

Day 2: Wednesday, 25 May 2022

• 9:30--11:30: Fundamentals of ultrasonic waves
• 13:00--16:00: Active sensing: Damage detection and localization in composites, numerical modeling strategy

Day 3: Thursday, 26 May 2022

• 9:30--11:30: Numerical modelling for passive and active sensing in composite structures
• 13:00--14:00: Live demonstration
• 14:00--15:00: Integration of SHM systems into new/existing aircrafts: axioms, challenges, examples, demonstration

Short Bio

Dr Zahra Sharif Khodaei is an associate in Structural Integrity in Department of Aeronautics, Imperial College London. She is the co-founder of the Structural Integrity and Health Monitoring (SI&HM) group in the department. Her main expertise is in the field of Structural Health Monitoring (SHM), both numerical and experimental research in passive (impact detection & classification) and active sensing (damage detection & characterization) of smart structures. She has developed different SHM systems using piezoelectric, fibre optic and novel printed sensors. She has developed SHM technologies and methodologies for diagnosis & prognosis of composite structures under environmental and operational conditions, within several collaborative projects involving UK industries and academia, EU projects (SHERLOC CleanSky II) and more recently ESA for space application. She is a member of the steering committee of CleanSky II. She has numerous publications and book chapters, see google scholar for the complete list. She is a Fellow of Royal Aeronautical society and Women’s Engineering Society.

Registration

• Complete the registration form to attend the course. There is no fee associated with the course.
• The course capacity is limited to 25 participants. The applications will be treated on a first-come-first-served basis.
• Because of the pilot format of the course, the are no credits associated with the course completion.

Meals and accommodation

• Lunches are available in the university restaurant (mensa) or in nearby restaurants.
• The course will be given on the campus of the Czech Technical University in Prague 6 - Dejvice, near the Dejvicka station underground (metro) line A. The participants are advised to book their accommodation in Prague 6, or in another district close to any metro station.
• Prague offers a wide range of facilities from student hostels to luxury hotels. You will certainly find suitable accommodation using the TripAdvisor, booking.com, airbnb, or similar servers.

Venue

• The lectures will take place in room B-366 of the Faculty of Civil Engineering, street address Thákurova 7, Prague 6

Acknowledgements

This course received support from the International Mobility Development Fund of the Faculty of Civil Engineering, Czech Technical University in Prague.