Health monitoring of aircraft by Nonlinear Elastic Wave Spectroscopy
Recent advances in aeronautics require the development of non-destructive evaluation (NDE) techniques that allow the quantification of micro-structural damage in a wide variety of materials during their manufacture and life cycle, ensuring both their quality and durability. Traditional NDE techniques, such as high quality linear acoustic, electromagnetic and visual inspection methods are not sufficiently sensitive to the presence and development of domains of incipient and progressive damage. For this purpose, AERONEWS will focus on the development and validation of an innovative micro-damage inspection system based on Nonlinear Elastic Wave Spectroscopy (NEWS).
The primary objective of this project is to enhance and implement new experimental and simulation tools necessary to measure, characterise, predict, quantify and locate early-stage damage in aircraft components and structures, based on the nonlinear response of the materials. Nonlinear Elastic Wave Spectroscopy (NEWS) has proven to be very sensitive and effective in detecting micro-damage in materials at early stages of failure, and long before linear acoustic properties show signs of material degradation. The focus will of this project will be on the following:
- expansion of the present knowledge of the nonlinear behaviour of progressive fatigue damage in aircraft parts and structures
- development of explicit sensor systems and advanced self-monitoring components
- formulation of an integrated design for a testing procedure and a unique engineered monitoring system for micro-damage inspection, including remote control and communication tools
- validation of the applicability of the system to real time in-situ inspection of a full-scale model on the ground.
Description of the work
The academic capabilities and usefulness of NEWS techniques will be extended in five ways, by:
- Validating and certifying the use of NEWS in aeronautics by extending the application of NEWS methods on materials and objects for which there is a pronounced need in aeronautics (Work Package 1), and by formulating recommendations for the selection between different NEWS techniques with respect to materials, structures and experimental situations.
- Proposing and developing the methodology for a NEWS technology-based imaging system (NEWIMAGE) through intensive NEWS modelling and enhanced numerical support for nonlinear acoustic imaging techniques of damage (localisation) (Work Package 2).
- Designing smart transducer/sensing systems by developing innovative transducer-receiver systems for embedded instrumentation and advanced NDE (Work Package 3), along with comprehensive data recording and analysis tools (Work Package 4).
- Preparing the necessary grounds for the development of a test device measurement system by combining the NEWS ideas with advanced transducer solutions (Work Package 3), wireless and remote communication capabilities and a user-friendly graphic interface (Work Package 4) to develop an efficient, semi-automatic and reliable package for the monitoring and identification of microdamage.
- Verification of the capabilities of the health monitoring system by integrating the measurement system as a portable or permanent damage diagnostic tool on selected key aircraft parts of a full-scale model on the ground (Work Package 5).
The development and preliminary verification of an innovative NEWS-based NDT technology and its engineering applications in aeronautics envisaged in this project will result in an enhanced, reliable and integrated prototype measurement system and protocol for micro-crack diagnostics of selected aircraft components and structures. Due to the increased sensitivity of the technology, it is expected that this development will result in a significant increase in aircraft and passenger safety while contributing to substantial cost savings through a decrease in maintenance and operating times. The long-term goals are the engineering of a standard measurement system based on NEWS for continuous health monitoring and early stage damage diagnosis.
- Related Info
- Acronym: AERONEWS
- Contract No.: AST-CT-2003-502927
- Instrument: Specific Targeted Research Project
- Total Cost: €4 874 745
- EU Contribution: €3 562 596
- Starting date: 01/03/2004
- Duration: 48 months
Katholieke Universiteit Leuven
Leuven Research and Development,
Groot Begijnhof 58/59,
Koen Van Den Abeele
Tel: +32 56 246 256
Fax: +32 56 246 999
- EC officer :
Hans Josef von den Driesch
Tel: +32 2 296 0609
Fax: +32 2 296 6757
- Katholieke Universiteit Leuven BE
- Vrije Universiteit Brussel (VUB) BE
- Groupement d’Intérêt Public ‘Ultrasons’ FR
- ASCO Industries N.V. BE
- Zemedelske druzstvo Rpety se sidlem ve Rpetec CZ
- Institute of Thermomechanics - Academy of Sciences of the Czech Republic CZ
- Vyzkumny a Zkusebni Letecky Ustav, A.S. (VZLU) CZ
- NDT Expert FR
- Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. DE
- Politecnico di Torino IT
- Università di Napoli ‘Federico II’ IT
- Consejo Superior De Investigaciones Científicas ES
- Boeing Research & Technology Centre ES
- CSM Materialteknik AB SE
- University of Exeter UK
- University of Bristol UK
- University of Nottingham UK
- Cranfield University UK