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Experimental Study on the Stiffness Evolution and Residual Strength of a Pre-damaged Structural Component Made from SMC CFRP Material

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Abstract

The mechanical characterisation of pre-damaged structural components made from sheet moulding compound (SMC) carbon-fibre reinforced polymer (CFRP) is still an open research question. This study shows the stiffness evolution of an automotive suspension part after damage initiation for a cyclic fullyreversed loading sequence with incrementally increased displacement amplitude. The cyclic test is followed by a quasi-static tensile test to estimate the residual strength of the component. Visual assessment of a highly stressed area is performed via 3D-DIC for the static and dynamic tests. As a result from the load and displacement measurements, the decrease in structural stiffness for the fatigue test is obtained and described by a logarithmic law. The residual strength and stiffness in the quasi-static tensile test gives insight into how pre-damaged structural parts can be used for limited durations (e.g. limp home mode in a passenger vehicle after light impact).
Original languageEnglish
Title of host publicationProceedings of the 13th International Conference on Damage Assessment of Structures
EditorsMagd Abdel Wahab, Zamberi Jamaludin, Mohd Najib Ali Mokhtar
Place of PublicationSingapore
PublisherSpringer
Pages827-836
Number of pages10
ISBN (Print)978-981-13-8330-4
DOIs
Publication statusPublished - 2020

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Fields of science

  • 203 Mechanical Engineering
  • 203003 Fracture mechanics
  • 203007 Strength of materials
  • 203012 Aerospace engineering
  • 203022 Technical mechanics
  • 205016 Materials testing
  • 201117 Lightweight design
  • 203002 Endurance strength
  • 203004 Automotive technology
  • 203011 Lightweight design
  • 205015 Composites

JKU Focus areas

  • Sustainable Development: Responsible Technologies and Management

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