Negative Pressure Waves Analysis for Crack Localization and Crack Size Estimation for 3D Printed SHM system

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

Abstract

A new Structural Health Monitoring system was developed to allow
a faster introduction of 3D printed components into safety critical appli-
cations. Additive manufacturing techniques are used to embed capillaries
in the 3D printed structure that are then pressurized. Continuous moni-
toring of the capillary pressure allows the system to indicate the existence
of a crack when the pressure deviates from the initial pressure level. A
specically developed experimental set-up enables the study of the impact
of dierent parameters on the leak flow behaviour and the occurring Nega-
tive Pressure Waves. Negative Pressure Waves are analysed to demonstrate
the crack localization and crack size estimation feasibility. It will rst be
theoretically proven that the size and location of the crack can be derived
from the Negative Pressure Waves. Secondly, measurements will validate
the crack localization and size estimation feasibility of the new Structural
Health Monitoring system.
Original languageEnglish
Title of host publicationASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
Place of PublicationColorado
PublisherASME
PagesV002T05A003
Number of pages9
Volume2
ISBN (Electronic)978-0-7918-5730-4
Publication statusPublished - 21 Sep 2015
EventSmart Materials, Adaptive Structures and Intelligent Structures - Colorado Springs, United States
Duration: 21 Sep 201523 Sep 2015

Conference

ConferenceSmart Materials, Adaptive Structures and Intelligent Structures
CountryUnited States
CityColorado Springs
Period21/09/1523/09/15

Keywords

  • Structural health monitoring
  • Crack localization
  • Negative Pressure Waves
  • 3D printed materials
  • Fatigue damage characterization

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