Program
Sunday July 6
5:00 PM: Registration Open
6:00PM - 8:00 PM: Opening Reception
Monday July 7
8:00 AM: Registration Open
Keynote Talk #1: (John Aldrin, Principal, Computational Tools)
Practical Use of Models for Quantitative Eddy Current Nondestructive Evaluation (NDE) of Aerospace Materials and Structurers
Session 1A1: Terahertz and Eddy Current Applications
Chair: Junliang Dong
Session 1A2: AI and Machine Learning
Chair: Matt Cherry
9:00 AM: AN ANALYTICAL SOLUTION FOR A COIL OUTSIDE A MULTIPLAYER PIPE IN EDDY CURRENT TESTING PROBLEM USING CHENG MATRIX METHOD
9:20 AM: Efficient evaluation of localized metal losses in pipelines with large-thickness coating based on pulsed eddy current testing technique
9:40 AM: INFLUENCE OF PLY ORIENTATION ON EDDY CURRENT BEHAVIOUR IN CFRPs USING INDUCTIVE COUPLING
10:00 AM: TERAHERTZ IMAGING FOR NONDESTRUCTIVE EVALUATION
10:20 AM: BREAK
10:40 AM: SHAPE ESTIMATION OF RECTANGULAR PERIODIC ROUGH SURFACES USING ULTRASONIC SIMULATION DATA
11:00 AM: Overcoming Data Challenges in Heat Exchanger Tube Inspection with AI-Driven Tools
11:20 AM: Using 2.5D Super-Resolution to Improve Defect Detection in Steel Additively Manufactured Parts
11:40 AM: A DATA EFFICIENT SPARSE MODELING FRAMEWORK FOR POWER ESTIMATION IN WATER TREATMENT SENSING OPERATIONS
12:00 PM - 1:00 PM: LUNCH
Session 1P1: Material State Awareness
Session 1P2: ECT and Magnetometry I
1:00 PM: Magneto-elastic interactions in iron-silicon single crystals: influence of tensile stress on magnetization, magnetostriction, and Barkhausen noise
1:20 PM: DETECTION OF WELD LINE IN STEEL TUBES BASED ON EDDY CURRENT TESTING
1:40 PM: Nondestructive Residual Stress Measurement of Deep Rolled Nickel Superalloys
2:00 PM: Rapid Time-Resolved 3D Characterization of Printing Flaws in LPBF Ni-282 During Creep
2:20 PM: PREDICTING COMPRESSIVE STRENGTH OF CONCRETE WITH SYNTHETIC APERTURE RADAR IMAGES
2:40 PM: Eddy Current Characterization of Microtexture Region Orientation in Titanium Alloys
3:00 PM: BREAK
3:20 PM: RESIDUAL STRESS DISTRIBUTION ANALYSIS WITH A NEW NEEDLE PROBE SETUP
3:40 PM: Omnidirectional Eddy Current Imaging Technique With Phase-Amplitude Controlled Array
4:00 PM: A Pot-Cored Sensor for Advanced Corrosion Detection and Characterization
4:20 PM: AN ECT PROBE COMPRISING TWO CIRCULAR ARRAYS OF TMR SENSORS FOR THE INSPECTION OF DEFECTS BENEATH RIVETS
Tuesday July 8
8:00 AM: Registration Open
Keynote Talk #2: (Ahmed Hassen, Group Lead, Composites Innovation, ORNL)
TBD
Session 2A1: Modeling and Characterization I
Chair: Matthew Newton
Session 2A2: Modeling and Characterization II
Chair: Helena Ramos
9:00 AM: Statistical Assesment of Inversion Robustness for Hysteresis Characterisation Using Harmonic Distortion Measurements
9:20 AM: Modeling of the inter-layer resistance in carbon fiber reinforced plastic laminates to calculate eddy-current probe signal
9:40 AM: Robust eddy-current transient calculations using a z-transfrom approach
10:00 AM: A study of pinning effect on Barkhausen noise and hysteresis loop based on modified Ising model
10:20 AM: BREAK
10:40 AM: Interpolation-Based Analytical inversion for Stress Characterization in Ferromagnetic Materials
11:00 AM: A NUMERICAL MODELLING APPROACH FOR OPTIMAL EDDY CURRENT SENSOR LOCATION IN AEROSPACE WING-SKIN BOLTHOLE INSPECTION
11:20 AM: REFORMULATION OF THE DODD & DEEDS MODELS BY USING EIGENFUNCTION EXPANSIONS
11:40 AM: THEORETICAL PREDICTIONS OF MAGNETIC FIELD SIGNALS DUE TO A RECTANGULAR COIL IN A TUBE
12:00 PM - 1:00 PM: LUNCH
Session 2P1: Digital Twins, Data Fusion and Inverse Problems
Chair: Ian Gravagne
Session 2P2: ECT and Magnetometry II
Chair: Will Punter
1:00 PM: Metal artifact reduction in X-ray computed tomography of TRISO fuel compacts
1:20 PM: INVERSION OF CRYSTALLOGRAPHIC TEXTURE IN STEELS FROM MICROSTRUCTURAL MAGNETIC MODELLING AND MEASUREMENTS
1:40 PM: DATA FUSION APPROACH TO LAYUP CHARACTERIZATION OF CFRP LAMINATES USING ECT, UT, AND CT
2:00 PM: An Approximation Model for a Yoke Ferrite Core ECT Probe Simulation Using a Hybrid Approach
2:20 PM: SIMULTANEOUS ESTIMATION OF ELECTRICAL CONDUCTIVITY, THICKNESS, AND LIFT-OFF OF LAMINATES VIA EDDY CURRENT TESTING
2:40 PM: ECT THICKNESS MEASUREMENT OF METALLIC PLATES BY A NEW REAL-TIME AND LIFT-OFF INVARIANT METHOD
3:00 PM: BREAK
3:20 PM: DETECTION OF SUBSURFACE DEFECTS IN STEEL TUBES WITH AN EXTERNAL SURFACE FERROMAGNETIC LAYER
3:40 PM: Advanced nondestructive detection of grinding burns via NV-center based magnetometry
4:00 PM: NOVEL TRANSMISSION UNIFORM EDDY CURRENT TESTING TECHNIQUE FOR INSPECTION OF STAINLESS STEEL CRACKS
4:20 PM: PULSED MULTIFREQUENCY EXCITATION AND SPECTROGRAM EDDY CURRENT TESTING (PMFES-ECT) METHOD
6:00 PM - 9:00 PM: CONFERENCE BANQUET
Wednesday July 9
Session 3A1: Structural Health Monitoring and Damage Diagnosis
Chair: Benjamin Ducharne
Session 3A2: Advanced Sensors and Sensing Systems
Chair: Saptarshi Mukherjee
9:00 AM: Eddy Current Torque Measurements of Threaded Steel Pipes.
9:20 AM: A novel defect detection method for multilayered structures based on EMPECT and high-order statistical analysis
9:40 AM: Feasibility of electrical impedance tomography for defect monitoring in graphite for microreactors
10:00 AM: Advanced Surface Fitting Model of Monocular Underwater Laser Scanning
10:20 AM: BREAK
10:40 AM: Deep Learning Based Sparse X-ray CT Image Reconstruction of Thick and Complex AM Parts Made of High-Density Nickle Super-Alloys
11:00 AM: Double Modes of Torsional Guided Waves for Locating and Quantifying Cracks in Riser Using Electromagnetic Acoustic Transducer
11:20 AM: Spatial Light Path Analysis and Calibration Method for Underwater Structured Light Vision System
11:40 AM: Domain wall activity and magnetic losses under rotational magnetization: classical and Barkhausen noise hysteresis cycles
12:00 PM - 5:30 PM: ORNL Tour Departs at 12:30 PM, box lunch provided. Pre-registration REQUIRED
Keynote
Talk 1:
Dr. John C. Aldrin,
Computational Tools, Gurnee, IL, 60031 USA
Biography:
Dr. John C. Aldrin is the principal of Computational Tools, specializing in nondestructive evaluation modeling and simulation, data analysis, inverse methods, AI/ML and reliability assessment. He obtained his Ph.D. in Theoretical and Applied Mechanics from Northwestern University in 2001 under Prof. Jan Achenbach. Over the past 24 years, he has supported a number of organizations, including the Air Force Research Laboratory, TRI Austin, NASA and Iowa State University. Dr. Aldrin has co-authored over 190 journal, conference and book publications in the field of nondestructive evaluation. Dr. Aldrin is a Fellow of ASNT and in 2024 received the Robert E. Green Jr. Research Recognition for Sustained Excellence Award.
Keynote talk:
Practical Use of Models for Quantitative Eddy Current Nondestructive Evaluation (NDE)
of Aerospace Materials and Structures
Abstract:
The vision for quantitative nondestructive evaluation is to provide techniques to assess the state of a material, and to detect and characterize any discontinuities present. While eddy current nondestructive evaluation has been readily used for many decades to detect fatigue cracks in metallic aerospace structures and components, there is an outstanding need for innovative methods to reliably classify eddy current indications and provide accurate sizing of discontinuities, to improve maintenance decision making and provide critical data for digital twin models. While there is a growing desire to leverage emerging artificial intelligence and machine learning tools, successful applications in NDE have been limited to cases where the data interpretation task is relatively straightforward, or when large, high quality, and well-understood empirical NDE data sets have been acquired. As an alternative approach, considerable work on model-based inversion, incorporating a ‘first-principles’ physics model with an iterative solution scheme, has been performed to address certain eddy current NDE characterization problems. However, transition has been limited by three primary challenges: the inherent ill-posedness of certain inverse problems in NDE, long solution times for accurate NDE measurement models, and the lack of robustness of the inverse method schemes to the presence of noise and uncontrolled variation with in-field NDE measurements.
This talk present progress to overcome the challenges of implementing model-based inversion for practical use in eddy current NDE. A comprehensive approach has been developed for model-based inversion design to ensure reliability through (a) an initial key factor assessment on the eddy current response due to discontinuities dimensions, part material conditions and probe state, (b) model benchmarking and use of model approximations where feasible, (c) model parameterization and application of surrogate models to reduce solution time, (d) rigorous model calibration aligned with the inspection procedure, (e) signal processing and filtering, (f) robust indication registration, (g) feature extraction to reduce the size of inverse problem, (h) use of global optimization techniques, (i) strategies to manage sensitivity to probe liftoff, and (j) comprehensive testing and validation studies with specimens replicating the full variation of expected test conditions. Two applications are highlighted throughout the talk, the inspection of cracks in bolt-hole eddy current (BHEC) inspections of metallic structures, and the characterization of crack and other discontinuities present in nickel-based superalloy propulsion components. Recent comprehensive studies of BHEC inversion of crack size demonstrate clear advantages over a simple amplitude-based analysis over a wide range of test conditions. Validation studies are also presented for classifying and sizing both planar and volumetric discontinuities in propulsion components.
Keywords: Eddy Current, Models and Characterization, Data Processing, Inverse problems.
Acknowledgements:
First, I would like to acknowledge the special collaboration I have enjoyed for over two decades with Harold Sabbagh, Elias Sabbagh and R. Kim Murphy of Victor Technologies. Without their development of VIC-3D and their openness to collaboration, this work would not have been possible. Recent work was supported by the U.S. Air Force Research Laboratory (AFRL) through Research Initiatives for Materials State Sensing II (RIMSS II), Inversion of Received Electromagnetic Signals to Characterize Damage in Propulsion Systems, Contract No: FA8650-10-D-5210, Agreement No. 12-S7114-03-C1, and Contract No: FA8650-19-C-5218. Other key collaborators on this work I wish to thank include Eric Lindgren, Siamack Mazdiyasni, Matt Cherry and Mike Uchic (AFRL/RXNW), Eric Shell and Erin Oneida (KBR), Alisha Hutson (UDRI), Doyle Motes and David Forsyth (TRI Austin), and George Nuxoll (UniWest).
Talk 2:
Dr. Ahmed Arabi Hassen
ORNL/UTK Adjunct Professor, Mechanical Engineering Department,
University of Tennessee at Knoxville
Biography:
Dr. Ahmed Hassen is the Group Leader for the Composites Innovation (CI) Group in the Manufacturing Science Division (MSD) at Oak Ridge National Laboratory (ORNL). He is leading ORNL's development efforts in high-rate manufacturing of advanced composites structures. Ahmed is leading ORNL’s molds and dies manufacturing portfolio for the composite manufacturing industry. One of his leading efforts is to develop a vision and strategies for smart manufacturing of polymers and advanced composites aiming to advance the U.S. competitiveness in the global market of manufacturing. Dr. Hassen contributed to the creation of a new market for Additive Manufacturing (AM) technologies by developing a new class of composite feedstock materials for large-scale AM systems. He has expertise in a wide variety of composite manufacturing, characterization, and qualification methods and he is currently leading/managing several technical research efforts with a large funding portfolio in this field. Dr. Hassen is mentoring, supporting, and managing a group of undergraduate and graduate students (PhD and Masters), postdoctoral fellows, and junior/senior staffs. Dr. Hassen was serving on the Board of Directors (BOD) of the American Society for Non-destructive Testing (ASNT) and was the Chairman of the ASNT Research Symposium (2020-2022). He has published 90+ articles in high impact journals and proceedings, holds several patents, CAMX awards, holds nine issued patents, has received three R&D 100 Awards, named the 2021 Society of Manufacturing Engineers (SME), Jud Hall Composites Manufacturing Award recipient in addition to multiple honors and technical awards. Serves on the SAMPE Tennessee Valley Chapter Board and holds an adjunct professor appointment at the University of Tennessee at Knoxville.
Tour of Oak Ridge National Laboratory (ORNL)
Introduction
In conjunction with the ENDE 2025 conference, a tour of the Oak Ridge National Laboratory (ORNL) is being arranged on the afternoon of July 9 (tour sites TBD and will be announced soon). Buses will be arranged to pick up interested attendees at the conference hotel for transportation to the Oak Ridge reservation, with attendees dropped off back at the conference hotel after the tour. Given space constraints, the tour will be limited to 30 participants.
Program Capacity:
First 30 people
Instruction
Please send email to:ende2025@egr.msu.edu for ORNL tour registration.
Please use normal email address (no email aliases, please!)
Please include your full name in your email.
Using "ENDE 2025 Tour Signup" as email subject is preferred.
Attendees must indicate their interest in joining the tour. To ensure we are able to process site access for interested attendees in a timely manner, the deadline for all foreign national participants to sign up for the tour is May 10, 2025. For U.S. citizens, the deadline is June 15, 2025. All attendees interested in the tour should use their normal email address (no email aliases) to send the email to ENDE for signing up for the tour. After sending the signup email, an automated email will be sent to your email address requesting the necessary information for processing site access. Please make sure you check your email (including the junk folder) periodically and respond quickly to help us process your site access in a timely manner!
Please be aware that visitors to ORNL are required to bring a REAL ID Act compliant form of identification. The REAL ID Act requires that anyone accessing a Federal Facility, which ORNL is, must present a compliant form of identification. If you are from one of the noncompliant states, or have a license that states "Not For Federal Identification" you will need to provide another form of approved identification. A list of acceptable identification can be found by going to [link] (see the Before Arriving section on the page).
***Note that foreign national visitors must always present their passport and supporting visa documents upon arrival.***
