Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 137, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2020.105953
Keywords
Polymer-matrix composites (PMCs); Thermoplastic resin; Mechanical testing; Automated Fibre Placement (AFP)
Funding
- Commonwealth of Australia under the Australian Research Council [IC160100040]
- Federal Ministry for Transport, Innovation and Technology
- Federal Ministry of Science, Research and Economy
- Austrian Government
- State Government of Styria
- State Government of Lower Austria
- State Government of Upper Austria
- Australian Research Council [IC160100040] Funding Source: Australian Research Council
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This study presents the novel application of the compression shear test (CST) for characterising bonding strength of metal-composite hybrids made of steel and carbon fibre/polyamide 6 (CF/PA 6). An automated laser-assisted tape placement (ATP) process was used to lay-up the CF/PA 6 tapes on laser textured steel substrates. CST is of interest due to the ease of sample manufacturing as a relatively small test specimen is required. The results were compared with standardised single lap shear tests (ASTM D3165), which requires manufacturing of a double-notched test specimen. For benchmarking purposes, the compression shear test was also used to characterise the interlaminar shear strength of a plain CF/PA 6 composite. The results showed equivalent shear strength and similar failure modes for both tests of the metal-composite hybrid specimens. Grooved texturing of the steel substrate in the hybrid specimens promoted a mixed-mode (cohesive and adhesive) failure and a higher shear strength than for the composite-only specimens. Overall, the results showed that the compression shear test is a valid and efficient method to characterise the bonding strength of metal-composite hybrids and composites.
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