Cargando…
Reduction of Thermal Residual Strain in a Metal-CFRP-Metal Hybrid Tube Using an Axial Preload Tool Monitored through Optical Fiber Sensors
Thermal residual strains/stresses cause several defects in hybrid structures and various studies have reported the reduction of residual strain. This paper describes a method for reducing thermal residual strains/stresses in metal-CFRP-metal hybrid tubes (MCMHT). The proposed axial preload tool prov...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9608832/ https://www.ncbi.nlm.nih.gov/pubmed/36297945 http://dx.doi.org/10.3390/polym14204368 |
_version_ | 1784818865220354048 |
---|---|
author | Li, Zhao Ke, Wei Liu, Mingyao Zhou, Yang |
author_facet | Li, Zhao Ke, Wei Liu, Mingyao Zhou, Yang |
author_sort | Li, Zhao |
collection | PubMed |
description | Thermal residual strains/stresses cause several defects in hybrid structures and various studies have reported the reduction of residual strain. This paper describes a method for reducing thermal residual strains/stresses in metal-CFRP-metal hybrid tubes (MCMHT). The proposed axial preload tool provides two ways to reduce the thermal residual strains/stresses during the co-cure bonding process: pre-compressing of the metal layers and pre-stretching of the unidirectional carbon fiber reinforced polymer (CFRP) layers. An online measurement technique with embedded optical fiber Bragg grating (FBG) sensors is presented. Thermal residual strains are evaluated based on classical lamination theory with the assumption of plane stress. The theoretical calculations and measurement results agree well. Furthermore, the dynamic characteristics of the MCMHTs are tested. The results show that the reduction of residual strain increases the natural frequency of the MCMHT, but is detrimental to the damping capability of the MCMHT, which imply that the intrinsic properties of the metal-composite hybrid structure can be modified by the proposed axial preload tool. |
format | Online Article Text |
id | pubmed-9608832 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96088322022-10-28 Reduction of Thermal Residual Strain in a Metal-CFRP-Metal Hybrid Tube Using an Axial Preload Tool Monitored through Optical Fiber Sensors Li, Zhao Ke, Wei Liu, Mingyao Zhou, Yang Polymers (Basel) Article Thermal residual strains/stresses cause several defects in hybrid structures and various studies have reported the reduction of residual strain. This paper describes a method for reducing thermal residual strains/stresses in metal-CFRP-metal hybrid tubes (MCMHT). The proposed axial preload tool provides two ways to reduce the thermal residual strains/stresses during the co-cure bonding process: pre-compressing of the metal layers and pre-stretching of the unidirectional carbon fiber reinforced polymer (CFRP) layers. An online measurement technique with embedded optical fiber Bragg grating (FBG) sensors is presented. Thermal residual strains are evaluated based on classical lamination theory with the assumption of plane stress. The theoretical calculations and measurement results agree well. Furthermore, the dynamic characteristics of the MCMHTs are tested. The results show that the reduction of residual strain increases the natural frequency of the MCMHT, but is detrimental to the damping capability of the MCMHT, which imply that the intrinsic properties of the metal-composite hybrid structure can be modified by the proposed axial preload tool. MDPI 2022-10-17 /pmc/articles/PMC9608832/ /pubmed/36297945 http://dx.doi.org/10.3390/polym14204368 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Li, Zhao Ke, Wei Liu, Mingyao Zhou, Yang Reduction of Thermal Residual Strain in a Metal-CFRP-Metal Hybrid Tube Using an Axial Preload Tool Monitored through Optical Fiber Sensors |
title | Reduction of Thermal Residual Strain in a Metal-CFRP-Metal Hybrid Tube Using an Axial Preload Tool Monitored through Optical Fiber Sensors |
title_full | Reduction of Thermal Residual Strain in a Metal-CFRP-Metal Hybrid Tube Using an Axial Preload Tool Monitored through Optical Fiber Sensors |
title_fullStr | Reduction of Thermal Residual Strain in a Metal-CFRP-Metal Hybrid Tube Using an Axial Preload Tool Monitored through Optical Fiber Sensors |
title_full_unstemmed | Reduction of Thermal Residual Strain in a Metal-CFRP-Metal Hybrid Tube Using an Axial Preload Tool Monitored through Optical Fiber Sensors |
title_short | Reduction of Thermal Residual Strain in a Metal-CFRP-Metal Hybrid Tube Using an Axial Preload Tool Monitored through Optical Fiber Sensors |
title_sort | reduction of thermal residual strain in a metal-cfrp-metal hybrid tube using an axial preload tool monitored through optical fiber sensors |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9608832/ https://www.ncbi.nlm.nih.gov/pubmed/36297945 http://dx.doi.org/10.3390/polym14204368 |
work_keys_str_mv | AT lizhao reductionofthermalresidualstraininametalcfrpmetalhybridtubeusinganaxialpreloadtoolmonitoredthroughopticalfibersensors AT kewei reductionofthermalresidualstraininametalcfrpmetalhybridtubeusinganaxialpreloadtoolmonitoredthroughopticalfibersensors AT liumingyao reductionofthermalresidualstraininametalcfrpmetalhybridtubeusinganaxialpreloadtoolmonitoredthroughopticalfibersensors AT zhouyang reductionofthermalresidualstraininametalcfrpmetalhybridtubeusinganaxialpreloadtoolmonitoredthroughopticalfibersensors |