A structural health monitoring technique for the reconstruction of impact forces in aerospace components

Mario Emanuele De Simone, Francesco Ciampa, Michele Meo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Despite composite materials are widely used in aerospace components, they are characterized by low-impact resistance and, therefore, subject to barely visible damage. This can be due to a number of sources such as hailstones, tools drop, runaway debris and bird strikes. Hence, the real time knowledge of low-velocity impact magnitude on aeronautical composite structures is certainly one of the most demanded goal for structural health monitoring (SHM). This article proposes a novel ultrasonic SHM method for the reconstruction of the impact force history on composite components. The research work is based on an inverse problem applied to composite samples of unknown mechanical properties, whose global characteristics are obtained through the knowledge of the structural transfer function measured by a sparse array of surface-bonded piezoelectric sensors. Hierarchical interpolation methods are then used to reconstruct the magnitude of the impact force over the entire structural domain. Since the proposed methodology only requires the knowledge of the material response at discrete locations, it does overcome the limitation of current impact force reconstruction techniques, which require the use of either analytical models based on classical plate theory or numerical finite element simulations. This technique is experimentally validated on a composite panel with complex geometries by considering low-velocity impacts at multiple locations and different levels of magnitude.

Original languageEnglish
Title of host publicationProceedings of the 11th International Workshop on Structural Health Monitoring, IWSHM 2017
Subtitle of host publicationVolume 2
PublisherDEStech Publications
Pages2154-2161
Number of pages8
ISBN (Electronic)9781605953304
Publication statusPublished - 2017
Event11th International Workshop on Structural Health Monitoring 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance, IWSHM 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance - Stanford University, Stanford, USA United States
Duration: 12 Sep 201714 Sep 2017
http://web.stanford.edu/group/sacl/workshop/IWSHM2017/index.html

Conference

Conference11th International Workshop on Structural Health Monitoring 2017: Real-Time Material State Awareness and Data-Driven Safety Assurance, IWSHM 2017
Abbreviated titleIWSHM 2017
CountryUSA United States
CityStanford
Period12/09/1714/09/17
Internet address

ASJC Scopus subject areas

  • Health Information Management
  • Computer Science Applications

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