Towards an Understanding of the Effect of Adding a Foam Core on the Blast Performance of Glass Fibre Reinforced Epoxy Laminate Panels
| dc.contributor.author | Gabriel, Sherlyn | |
| dc.contributor.author | von Klemperer, Christopher J | |
| dc.contributor.author | Chung Kim Yuen, Steeve | |
| dc.contributor.author | Langdon, Genevieve S | |
| dc.date.accessioned | 2021-12-10T09:50:46Z | |
| dc.date.available | 2021-12-10T09:50:46Z | |
| dc.date.issued | 2021-11-23 | |
| dc.date.updated | 2021-12-09T14:32:05Z | |
| dc.description.abstract | This paper presents insights into the blast response of sandwich panels with lightweight foam cores and asymmetric (different thicknesses) glass fibre epoxy face sheets. Viscously damped elastic vibrations were observed in the laminates (no core), while the transient response of the sandwich panels was more complex, especially after the peak displacement was observed. The post-peak residual oscillations in the sandwich panels were larger and did not decay as significantly with time when compared to the equivalent mass laminate panel test. Delamination was the predominant mode of failure on the thinner facesheet side of the sandwich panel, whereas cracking and matrix failure were more prominent on the thicker side (which was exposed to the blast). The type of constituent materials used and testing conditions, including the clamping method, influenced the resulting failure modes observed. A probable sequence of damage in the sandwich panels was proposed, based on the transient displacement measurements, a post-test failure analysis, and consideration of the stress wave propagation through the multilayered, multimaterial structure. This work demonstrates the need for detailed understanding of the transient behaviour of multilayered structures with significant elastic energy capacity and a wide range of possible damage mechanisms. The work should prove valuable to structural engineers and designers considering the deployment of foam-core sandwich panels or fibre reinforced polymer laminates in applications when air-blast loading may pose a credible threat. | en_US |
| dc.identifier | doi: 10.3390/ma14237118 | |
| dc.identifier.apacitation | Gabriel, S., von Klemperer, C. J., Chung Kim Yuen, S., & Langdon, G. S. (2021). Towards an Understanding of the Effect of Adding a Foam Core on the Blast Performance of Glass Fibre Reinforced Epoxy Laminate Panels. <i>Materials</i>, 14(23), 7118. http://hdl.handle.net/11427/35451 | en_ZA |
| dc.identifier.chicagocitation | Gabriel, Sherlyn, Christopher J von Klemperer, Steeve Chung Kim Yuen, and Genevieve S Langdon "Towards an Understanding of the Effect of Adding a Foam Core on the Blast Performance of Glass Fibre Reinforced Epoxy Laminate Panels." <i>Materials</i> 14, 23. (2021): 7118. http://hdl.handle.net/11427/35451 | en_ZA |
| dc.identifier.citation | Gabriel, S., von Klemperer, C.J., Chung Kim Yuen, S. & Langdon, G.S. 2021. Towards an Understanding of the Effect of Adding a Foam Core on the Blast Performance of Glass Fibre Reinforced Epoxy Laminate Panels. <i>Materials.</i> 14(23):7118. http://hdl.handle.net/11427/35451 | en_ZA |
| dc.identifier.ris | TY - Journal Article AU - Gabriel, Sherlyn AU - von Klemperer, Christopher J AU - Chung Kim Yuen, Steeve AU - Langdon, Genevieve S AB - This paper presents insights into the blast response of sandwich panels with lightweight foam cores and asymmetric (different thicknesses) glass fibre epoxy face sheets. Viscously damped elastic vibrations were observed in the laminates (no core), while the transient response of the sandwich panels was more complex, especially after the peak displacement was observed. The post-peak residual oscillations in the sandwich panels were larger and did not decay as significantly with time when compared to the equivalent mass laminate panel test. Delamination was the predominant mode of failure on the thinner facesheet side of the sandwich panel, whereas cracking and matrix failure were more prominent on the thicker side (which was exposed to the blast). The type of constituent materials used and testing conditions, including the clamping method, influenced the resulting failure modes observed. A probable sequence of damage in the sandwich panels was proposed, based on the transient displacement measurements, a post-test failure analysis, and consideration of the stress wave propagation through the multilayered, multimaterial structure. This work demonstrates the need for detailed understanding of the transient behaviour of multilayered structures with significant elastic energy capacity and a wide range of possible damage mechanisms. The work should prove valuable to structural engineers and designers considering the deployment of foam-core sandwich panels or fibre reinforced polymer laminates in applications when air-blast loading may pose a credible threat. DA - 2021-11-23 DB - OpenUCT DP - University of Cape Town IS - 23 J1 - Materials LK - https://open.uct.ac.za PY - 2021 T1 - Towards an Understanding of the Effect of Adding a Foam Core on the Blast Performance of Glass Fibre Reinforced Epoxy Laminate Panels TI - Towards an Understanding of the Effect of Adding a Foam Core on the Blast Performance of Glass Fibre Reinforced Epoxy Laminate Panels UR - http://hdl.handle.net/11427/35451 ER - | en_ZA |
| dc.identifier.uri | http://hdl.handle.net/11427/35451 | |
| dc.identifier.vancouvercitation | Gabriel S, von Klemperer CJ, Chung Kim Yuen S, Langdon GS. Towards an Understanding of the Effect of Adding a Foam Core on the Blast Performance of Glass Fibre Reinforced Epoxy Laminate Panels. Materials. 2021;14(23):7118. http://hdl.handle.net/11427/35451. | en_ZA |
| dc.language.iso | en | en_US |
| dc.publisher.department | Department of Mechanical Engineering | en_US |
| dc.publisher.faculty | Faculty of Engineering and the Built Environment | en_US |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_US |
| dc.source | Materials | en_US |
| dc.source.journalissue | 23 | en_US |
| dc.source.journalvolume | 14 | en_US |
| dc.source.pagination | 7118 | en_US |
| dc.source.uri | https://www.mdpi.com/journal/materials | |
| dc.title | Towards an Understanding of the Effect of Adding a Foam Core on the Blast Performance of Glass Fibre Reinforced Epoxy Laminate Panels | en_US |
| dc.type | Journal Article | en_US |