Debonding-on-demand Fe₃O₄-epoxy adhesively bonded dissimilar joints via electromagnetic induction heating
We investigated the debonding on-demand (DoD) of adhesively bonded hybrid dissimilar joints by applying electromagnetic induction heating to the joint overlap section, wherein the epoxy resin is reinforced with iron oxide (Fe3O4) particles. Ti-6Al-4 V adherends were bonded with CFRP or GFRP adherend...
| Main Authors: | , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/171037 |
| _version_ | 1811697416672378880 |
|---|---|
| author | Caglar, Hasan Aksoy, Y. Altay Idapalapati, Sridhar Caglar, Baris Sharma, Mohit Chian, Kerm Sin |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Caglar, Hasan Aksoy, Y. Altay Idapalapati, Sridhar Caglar, Baris Sharma, Mohit Chian, Kerm Sin |
| author_sort | Caglar, Hasan |
| collection | NTU |
| description | We investigated the debonding on-demand (DoD) of adhesively bonded hybrid dissimilar joints by applying electromagnetic induction heating to the joint overlap section, wherein the epoxy resin is reinforced with iron oxide (Fe3O4) particles. Ti-6Al-4 V adherends were bonded with CFRP or GFRP adherends using neat/modified epoxy adhesive. DoD tests revealed that eddy current heating of Ti-6Al-4 V was a dominant heating mechanism of the joints while both eddy current and magnetic hysteresis of CFRP and Fe3O4 acted as a secondary heating factor. A low content Fe3O4 and thinner composite adherend reduced the time to failure of the joints. Likewise, CFRP required a shorter time for debonding compared to GFRP due to its electromagnetic properties. Modifications with 2 and 5 wt.% Fe3O4 for CFRP and GFRP joints led to 31% and 37% time reduction which will be crucial for energy-saving when debonding large structures. Remarkably, sandblasting improved the electromagnetic induction capabilities of Ti-6Al-4 V, leading to a notable increase in the heating rate, which jumped from around 20°C/s to 80°C/s. Sandblasting enhanced the surface roughness of the adherends but only the water contact angle of GFRP decreased considerably. Fe3O4 modifications increased the epoxy residue on the Ti-6Al-4 V surface from 26% to 99%. DIC revealed the strain distribution of bulk materials to understand the thermomechanical mismatches between the materials and the adhesive joints exhibited high peel stresses at the overlap ends. The low weight content (2 and 5 wt.%) of Fe3O4 exhibited beneficial effects on the mechanical, thermal, thermomechanical, wettability and lap shear strength. |
| first_indexed | 2024-10-01T07:54:55Z |
| format | Journal Article |
| id | ntu-10356/171037 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:54:55Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1710372023-10-14T16:48:34Z Debonding-on-demand Fe₃O₄-epoxy adhesively bonded dissimilar joints via electromagnetic induction heating Caglar, Hasan Aksoy, Y. Altay Idapalapati, Sridhar Caglar, Baris Sharma, Mohit Chian, Kerm Sin School of Mechanical and Aerospace Engineering Institute of Materials Research and Engineering, A*STAR Engineering::Mechanical engineering Debonding-on-Demand Electromagnetic Induction Heating We investigated the debonding on-demand (DoD) of adhesively bonded hybrid dissimilar joints by applying electromagnetic induction heating to the joint overlap section, wherein the epoxy resin is reinforced with iron oxide (Fe3O4) particles. Ti-6Al-4 V adherends were bonded with CFRP or GFRP adherends using neat/modified epoxy adhesive. DoD tests revealed that eddy current heating of Ti-6Al-4 V was a dominant heating mechanism of the joints while both eddy current and magnetic hysteresis of CFRP and Fe3O4 acted as a secondary heating factor. A low content Fe3O4 and thinner composite adherend reduced the time to failure of the joints. Likewise, CFRP required a shorter time for debonding compared to GFRP due to its electromagnetic properties. Modifications with 2 and 5 wt.% Fe3O4 for CFRP and GFRP joints led to 31% and 37% time reduction which will be crucial for energy-saving when debonding large structures. Remarkably, sandblasting improved the electromagnetic induction capabilities of Ti-6Al-4 V, leading to a notable increase in the heating rate, which jumped from around 20°C/s to 80°C/s. Sandblasting enhanced the surface roughness of the adherends but only the water contact angle of GFRP decreased considerably. Fe3O4 modifications increased the epoxy residue on the Ti-6Al-4 V surface from 26% to 99%. DIC revealed the strain distribution of bulk materials to understand the thermomechanical mismatches between the materials and the adhesive joints exhibited high peel stresses at the overlap ends. The low weight content (2 and 5 wt.%) of Fe3O4 exhibited beneficial effects on the mechanical, thermal, thermomechanical, wettability and lap shear strength. Nanyang Technological University National Research Foundation (NRF) Submitted/Accepted version CH thanks Nanyang Technological University for the financial support in the form a SINGA graduate scholarship. IS thanks National Research Foundation Singapore for financial support via Grant Number CRP29-2022-0041 2023-10-10T06:46:12Z 2023-10-10T06:46:12Z 2023 Journal Article Caglar, H., Aksoy, Y. A., Idapalapati, S., Caglar, B., Sharma, M. & Chian, K. S. (2023). Debonding-on-demand Fe₃O₄-epoxy adhesively bonded dissimilar joints via electromagnetic induction heating. Journal of Adhesion. https://dx.doi.org/10.1080/00218464.2023.2256670 0021-8464 https://hdl.handle.net/10356/171037 10.1080/00218464.2023.2256670 2-s2.0-85170715713 en CRP29-2022-0041 Journal of Adhesion © 2023 Taylor & Francis Group, LLC. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1080/00218464.2023.2256670. application/pdf |
| spellingShingle | Engineering::Mechanical engineering Debonding-on-Demand Electromagnetic Induction Heating Caglar, Hasan Aksoy, Y. Altay Idapalapati, Sridhar Caglar, Baris Sharma, Mohit Chian, Kerm Sin Debonding-on-demand Fe₃O₄-epoxy adhesively bonded dissimilar joints via electromagnetic induction heating |
| title | Debonding-on-demand Fe₃O₄-epoxy adhesively bonded dissimilar joints via electromagnetic induction heating |
| title_full | Debonding-on-demand Fe₃O₄-epoxy adhesively bonded dissimilar joints via electromagnetic induction heating |
| title_fullStr | Debonding-on-demand Fe₃O₄-epoxy adhesively bonded dissimilar joints via electromagnetic induction heating |
| title_full_unstemmed | Debonding-on-demand Fe₃O₄-epoxy adhesively bonded dissimilar joints via electromagnetic induction heating |
| title_short | Debonding-on-demand Fe₃O₄-epoxy adhesively bonded dissimilar joints via electromagnetic induction heating |
| title_sort | debonding on demand fe₃o₄ epoxy adhesively bonded dissimilar joints via electromagnetic induction heating |
| topic | Engineering::Mechanical engineering Debonding-on-Demand Electromagnetic Induction Heating |
| url | https://hdl.handle.net/10356/171037 |
| work_keys_str_mv | AT caglarhasan debondingondemandfe3o4epoxyadhesivelybondeddissimilarjointsviaelectromagneticinductionheating AT aksoyyaltay debondingondemandfe3o4epoxyadhesivelybondeddissimilarjointsviaelectromagneticinductionheating AT idapalapatisridhar debondingondemandfe3o4epoxyadhesivelybondeddissimilarjointsviaelectromagneticinductionheating AT caglarbaris debondingondemandfe3o4epoxyadhesivelybondeddissimilarjointsviaelectromagneticinductionheating AT sharmamohit debondingondemandfe3o4epoxyadhesivelybondeddissimilarjointsviaelectromagneticinductionheating AT chiankermsin debondingondemandfe3o4epoxyadhesivelybondeddissimilarjointsviaelectromagneticinductionheating |