Active SHM and impact sensing for composite aerospace structures based on the TEmSAL technology - demonstration on a generic aircraft engine containment segment

Research output: Contribution to book/Conference proceedings/Anthology/ReportConference contributionContributedpeer-review

Abstract

Carbon fibre-reinforced plastic (CFRP) materials are of rising interest for the aerospace and aviation industry in order to achieve objectives towards reduced emissions, resource conservation and cost efficiency. Their typically layered and adaptable material structure offers the possibility to integrate functional elements. Especially electrical units for sensing or actuating can be utilized for structural health monitoring (SHM) applications. The novel Tailored Embeddable Sensor Actuator Layer (TEmSAL) technology for high-performance aerospace composites is utilised to instrument a generic full scale engine containment section with integrated piezo ceramic sensor elements. A tailored sensor network layout based on the structures eigenmodes is developed and aspects of the manufacturing and embedding of the functional element grid are addressed. The results of self-sensing experiments, exploiting the inverse piezoelectric effect in a pitch-catch setup and external excitation test results are presented and discussed. Impact sensing capabilities are explored by exposing the structure to a generic linear fan blade off (LFBO) impact at a velocity of 120 m/s. For this, an innovative setup is developed and discussed, including the impactor and sabot system as well as an adaptable fixture setup to mount the generic containment segment specimen and customize the impact angle. Test results are presented and the sensor performance is discussed.

Details

Original languageEnglish
Title of host publicationProceedings of the 10th ECCOMAS Thematic Conference on Smart Structures and Materials (Smart 2023)
Pages477-488
Number of pages12
ISBN (electronic)978-960-88104-6-4
Publication statusPublished - Jul 2023
Peer-reviewedYes

Conference

Title10th ECCOMAS Thematic Conference on Smart Structures and Materials
Abbreviated titleSMART 2023
Conference number10
Duration3 - 5 July 2023
Website
LocationUniversity of Patras
CityPatras
CountryGreece

External IDs

ORCID /0000-0003-1370-064X/work/143496844
ORCID /0000-0003-2653-7546/work/143497135
Mendeley d5c49afe-0738-35aa-bac9-84a21b006c9c
unpaywall 10.7712/150123.9802.444217

Keywords

Keywords

  • composite, structures, aerospace, aviation, SHM, impact