A Comprehensive Structural Analysis Process for Failure Assessment in Aircraft Lap-Joint Mimics Using Multi-Modal Fusion of NDE Data (Preprint)
Abstract
Multi-modal data fusion techniques are commonly used to enhance decision-making processes. In previous research, a comprehensive structural analysis process was developed for quantizing and evaluating characteristics of defects in aircraft lap-joint mimics using eddy current nondestructive evaluation (NDE) data collected for structural health monitoring. In this research, a comprehensive multi-modal structural analysis process is presented that includes intra- and inter-modal NDE data fusion. The process includes defect detection, defect characterization and Finite Element Modeling-based simulated fatigue testing for structural analysis. The multi-modal structural analysis process is then experimentally evaluated using five lap-joint mimic test panels with corroded patches at different layers of the lap-joints and one painted pristine panel used as a reference. The test panels are subjected to two rounds of mechanical loading, preceded by eddy current, millimeter wave, and ultrasonic NDE data obtained prior to each round. Different modality combinations are used to model the test panels at the different rounds of measurements. Experiments are performed to compare the simulated fatigue loading based on models determined from different modality combinations and the mechanical loading results to find susceptible-to-failure areas in the test panels. The results show that the comprehensive structural analysis process found the correct locations of failure areas at rates as high as 98.8%, using eddy current and ultrasonic modalities.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 2012
- Accession Number
- ADA565473
Entities
People
- David Van Aken
- Donald Palmer
- Gary Steffes
- Kapil Gupta
- Kenneth Doering
- Matt O'keefe
- Mohammad T. Ghasr
- R. J. Stanley
- Reza Zoughi
- Soumya De
Organizations
- Missouri University of Science and Technology