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Report

Teaser, summary, work performed and final results

Periodic Reporting for period 2 - DEMETER (Development of E2E Maintenance architecture process and methods enabling a reliable and economic air transport system)

Teaser

Summary

The project â€œProcess and Methods for E2E Maintenance Architecture development and demonstrations and solutions for technology integrationâ€ (DEMETER) is oriented in â€œProcess and Methods for E2E Maintenance Architecture development and demonstrations and solutions for technology integrationâ€ within the work package WP 3.6 â€œMaintenanceâ€. The overall objectives of DEMETER is to support the development and evaluation of a value driven End-to-End (E2E) maintenance service architecture enabling the replacement of systematic scheduled maintenance by condition based maintenance. The following cost reductions are targeted with an E2E maintenance service architecture :
â€¢ Reduction of the aircraft technical induced operational disruption by 0.2% to 0.5% with cost savings per year between 133Mâ‚¬ and to 334Mâ‚¬,
â€¢ Reduction of the current average delay time of 28 minutes by 2 to 4 minutes enabled by enhancements in line maintenance support tools, remote expert support and enhanced diagnostic efficiency. This can provide approximately 195Mâ‚¬ to 395Mâ‚¬ savings per year.
In order to meet the expectations in WP 3.6 with economic and ecological technologies the following technological objectives are faced within the DEMETER project:
1. Definition and development of service oriented architecture for legacy fleet.
2. Evaluation of the efficiency and performance of an E2E architecture.
3. Integration of key fundamental technology bricks, e.g. structure health monitoring, into condition based maintenance concept.
4. Improve the technology readiness level of the promising structural health monitoring systems from TRL 4 to 6.
5. Analysis of design rules, system and performance requirements
6. Development of algorithms prototype and, overall validation of the E2E platform and its technology.
7. Develop and adapt the simulator to integrate the results from other WP demonstrators and demonstrations and to enable the E2E maintenance platform evaluation
A service oriented E2E maintenance architecture and service solution for the legacy fleet operating in the European airspace today can enable the reduction of the maintenance effort, due technical faults or performance degradation observed on aircrafts flying.
The process of an E2E maintenance architecture incorporate global and local sensor data of an aircraft combined with model based load and damage assessment and the ability to predict the remaining life of aircraft components before failure (prognostic) are used to adapt the todayâ€™s given scheduled maintenance plan. More importantly, with such condition-based maintenance, the amount of unscheduled maintenance can be reduced and combined with an increase in safety. Utilizing SHM systems the structural mass can be decreased without decreasing the safety of the aircraft.
The necessary maintenance can be done more efficiently through faster and more accurate troubleshooting. Less waste of materials reduces the maintenance costs even further. A cost reduction can be achieved in an improved spare parts stock prediction. In all, the overall platform operational availability, utilization and safety can be increased while costs can be decreased with a condition based maintenance system.
Global and local data of an aircraft are obtained from already existing sensors and Structural Health Monitoring (SHM) systems. This information is used to perform a model based load and damage assessment including an automated repair decision analysis. The results of the analysis are used to adapt the todayâ€™s given scheduled maintenance plan. Maintenance is performed if necessary to fulfil the safety requirements. If the repair is not mandatory, the maintenance schedule can be optimized with respect to cost efficiency, e.g. considering the duty cycle, degree of capacity utilisation of the maintenance facility, etc.
DEMETER provides methods for integrated health monitoring and management system design, performance optimization and the overall architecture

Work performed

During the first reporting period the following results were achieved and fed the objectives
1. In WP 3 the AIRMES and ADVANCE project were supported defining an E2E architecture definition to perform at the end the evaluation, cf. Fig 1. The creation of the architecture will be done in the remaining duration.
2. In WP 1 and 2 a V&V and evaluation plan has been developed. Several internal and external deliverables were finished (D1.1-1 -PMT-policy; D2.1-1 E2E Maintenance Architecture Evaluation Plan). The overall evaluation will be performed at the end of the project, cf. Fig. 1.
3. The integration has not started yet.
4. The readiness level has been improved. A SHM design concept monitoring joint damages has been created and tested experimentally by NLR (Deliverable D 6.3-2 Structural Health Monitoring of Joint Damages), cf. Fig. 2. In addition the test matrix for the environmental compensation algorithms for guided waved based structural health monitoring has been finalized. The experimental setup has also been finalized, the specimens have been produced (cf. Fig. 3) and algorithm development and implementation has been started.
5. The analysis of design rules, system and performance requirements were finished and published in the Deliverable D6.1-1 â€“ Design Rules Analysis
6. The prototype development has been started.
7. The development of the simulator has been started and tested with generic data. The results of other WP demonstrators had not been integrated yet.
The objectives of the reporting period are represented within the specific milestones and deliverables. ALL internal deliverables have been reached during the period. One JU deliverable is open due to the late start of the third CfP within the core project ADVANCE.

Final results

For the work packages different results should be achieved at the end of the project. Generally, DEMTER can be split in two main parts. Part I is represented in WP 1-4. Here the goal at the end of the project will be an evaluation of an E2E architecture defined in ADAVANCE. The concept to verify and validate technologies and systems has been developed in the first period. Furthermore, the evaluation concept has been developed. Both is beyond state of the art, because existing methods had to be adapted to the specific needs of DEMETER and ADVANCE.
Part II is represented in WP 5-8. The focus here is in the SHM technology development. In WP 6 a design rules analysis had been performed. The results show an upper weight saving potential considering a SHM system during the aircraft design process. Such analysis has not been done yet and is beyond state of the art. In WP 5 and 7 a structure usage monitoring function should be developed. In the period an architecture concept has been created. Such systems are in use for military aircraft but not for civil ones.
In WP 8 the compensation of the impact of environmental effects should be developed. Here, an experimental will be developed to create such compensation algorithms, which is then beyond state of the art.