Impact response of repaired sandwich structures
Source abstract
Abstract
Abstract The low‐velocity impact behavior of repaired sandwich structures with woven carbon/epoxy face‐sheets and Nomex honeycomb core is studied experimentally. First, sandwich plates were subjected to ballistic impacts; the damaged area was removed, filled by nano‐enhanced resin and covered by a double‐external patch. Afterwards, the repaired sandwich plates were impacted at low‐velocity. Peak load and absorbed energy were determined for several impact energies and compared with results for non‐repaired (intact) sandwich plates. For all impact energies tested, repaired specimens show higher peak load and lower absorbed energy than the intact ones. Additionally, tested sandwich plates were cut transversally in order to observe the resulting damage, concluding that is different in both configurations, and confirming that it is initiated at higher impact energies in repaired structures.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Mechanical Behavior of Composites · Cellular and Composite Structures · High-Velocity Impact and Material Behavior
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Continuum Mechanics and Structural Analysis University Carlos III of Madrid Leganés Spain
University of Coimbra, CEMMPRE, Department of Mechanical Engineering Coimbra Portugal
C‐MAST, Department of Electromechanical Engineering University of Beira Interior Covilhã Portugal
Funding
Fundação para a Ciência e a Tecnologia · Ministerio de Economía, Industria y Competitividad, Gobierno de España
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