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TRIMIS

Health Monitoring of Aircraft by Nonlinear Elastic Wave Spectroscopy

Project

AERONEWS - Health Monitoring of Aircraft by Nonlinear Elastic Wave Spectroscopy


Funding origin:
European
European Union
STRIA Roadmaps:
Vehicle design and manufacturing (VDM)
Vehicle design and manufacturing
Transport infrastructure (INF)
Transport infrastructure
Transport mode:
Airborne
Airbone
Transport sectors:
Passenger transport
Passenger transport
Freight transport
Freight transport
Project website:
Duration:
Start date: 01/03/2004,
End date: 01/02/2008

Status: Finished
Funding details:
Total cost:
€4 859 757
EU Contribution:
€3 562 596

Overview

Background & policy context:

Nonlinear Elastic Wave Spectroscopy (NEWS) and related acoustic and ultrasonic methods comprise a new class of innovative non-destructive techniques that provide extreme sensitivity in detecting and imaging incipient damage in the form of microcracks or delaminations, weakening of adhesive bonds, thermal and chemical damage, etc. The sensitivity and applicability of nonlinear methods to damage are superior to those obtained by currently used technologies. NEWS methods are in various stages of development and have not yet been applied to aircraft health monitoring.

Objectives:

The project's goal was to examine, confirm and exploit the successful results of these techniques, using fundamental materials research on fatigue loading, and to apply them to the particular field of aeronautics.

The project included progressive microdamage and fatigue monitoring of aircraft components and structures, sensor engineering, development of NEWS-based imaging methods, and fundamental research on the modelling of meso-scale damage phenomena. It aimed to investigate the relation of these studies to the macroscopic behaviour of progressively fatiguing materials, and formulate the design of a unique system for microdamage inspection, including remote control and communication tools, and the completion of a full-scale model validation.

The long-term goal of the project (5-10 years) is to monitor while in operation, the integrity of airframes and aircraft engines, and helicopter rotor systems. The development of this innovative NEWS-based technology and its engineering applications to aeronautics, will result in an enhanced, reliable and integrated measurement system and protocol for microcrack diagnostics of aircraft components and structures. This development is expected to result in a significant increase in aircraft and passenger safety while contributing to substantial cost savings through a decrease in maintenance and operating times.

Methodology:

The AERONEWS project integrated activities in three sections:

  • fundamental and applied research
  • technological development and innovation related activities
  • validation and training.

The emphasis of the project methodology is on the development and perfection of suitable techniques and knowledge enhancement of NEWS so that it can be used for both the current and extended non-destructive evaluation (NDE) methods and applications in the field of aeronautics.

The working flow-chart of the project incorporates all the steps required for the practical implementation of NEWS technology. Activities dealt with:

  • fundamental and applied research;
  • technological developments;
  • validation of the proposed product;
  • dissemination activities.

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