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Strain
Article . 2025 . Peer-reviewed
License: CC BY
Data sources: Crossref
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The Impact and Compression‐After‐Impact Behaviour of CFRP After Double Impacts in Different Locations

Authors: R. A. Brooks; J. Liu; A. M. Joesbury; L. T. Harper; H. Liu; B. R. K. Blackman; A. J. Kinloch; +1 Authors

The Impact and Compression‐After‐Impact Behaviour of CFRP After Double Impacts in Different Locations

Abstract

ABSTRACTThe present paper investigates the low‐velocity impact behaviour and the compression‐after‐impact (CAI) behaviour of carbon‐fibre reinforced‐plastic (CFRP) composite panels after two impacts in different locations on a test coupon. The effect of changing the separation distance between the two impacts, as well as changing the impact energy, is examined by a comparison of C‐scan damage maps and the CAI load versus deflection behaviour. It is shown that impacts that are close to one another lead to a linking of the delamination footprints at each impact site. Further, that increasing the impact separation distance, for the same impact energy, leads to an increase in the area of the initial delamination damage footprint, until a separation distance is reached when two completely separate damage zones are formed. As to be expected, the delamination damage area increases, and the residual compressive strength after impact (termed the ‘CAI strength’) decreases with an increasing impact energy. An interesting observation is that the residual compressive strength generally increases with increasing impact separation distance.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
hybrid