Reduction of thermal residual stress in carbon fiber aluminum laminates using a thermal expansion clamp

Xue, Jia; Wang, Wen Xue; Takao, Yoshihiro; Matsubara, Terutake

doi:10.1016/j.compositesa.2011.04.001

Cited by 50 publications

(23 citation statements)

References 14 publications

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“…The resulting properties of the hybrid material need to be predictable when used in structural applications. In addition to its constituents, their composition and bonding as well as their manufacturing history and the resulting residual stresses play an important role [4][5][6][7][8][9][10]. Residual thermal stresses occur as a consequence of the difference in the coefficients of thermal expansion (CTE) of the two constituents and the difference between cure temperature of the matrix and operational temperature of the cured laminate.…”

Section: Introductionmentioning

confidence: 99%

“…Extrinsic parameters are process and tooling related parameters. Different investigations have been performed to affect residual stresses by modifying these parameters, utilize modifications in curing process [7,8], using an additional clamping tool [9] or a post stretching of the cured laminate [10]. Furthermore geometrical effects, like spring-in, tool part interaction, like warpage and forced interaction as well as interply interactions could affect the residual stresses [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of residual stress development in FRP-metal hybrids using fiber Bragg grating sensors

Prussak

Stefaniak

Hühne

et al. 2018

Prod. Eng. Res. Devel.

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This paper presents experimental measurement methods for the determination and evaluation of process related thermal residual stresses in fiber metal laminates. A cure monitoring system with fiber Bragg grating (FBG) sensors is used to measure the in-plane strains during processing of carbon fiber reinforced plastic (CFRP)-steel laminates. The simultaneous measurement captures the thermal expansion during the heating stages, the cure shrinkage, and the cooling thermal shrinkage. The results enable the characterization of the co-cure bonding process and the stress transfer between the metal and FRP-layers during the creation process. The residual strains, which are used for calculation of the residual stresses, are recorded at room temperature after manufacturing. In addition, an advanced method using FBG-sensors and the deflection of asymmetric hybrid specimens was developed to validate the gained residual stress data. Asymmetrical specimens are created by removing selected layers after cure. Quantitative evaluation is achieved by determination of their curvature and measuring the strain changes with the embedded FBG-sensors. For validation, the methods were successfully demonstrated on two different curing cycles with different resulting residual stress levels. The simultaneous strain measurement enables the investigation of stress development and delivers more in-depth process knowledge for further optimization of the manufacturing process.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of residual stress development in FRP-metal hybrids using fiber Bragg grating sensors

Prussak

Stefaniak

Hühne

et al. 2018

Prod. Eng. Res. Devel.

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“…The presence of aluminium layer provides good impact resistance. This combination of high stiffness and strength with good impact resistance gives GLARE a great advantage as an application to the structures of aircraft, space, helicopter, robot, laminated pipe, drive shaft and so on [11][12][13][14] . Jiang et al 15 have studied the fabrication and characterization of the carbon-aluminium thermal management composites.…”

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confidence: 99%

Mechanical Properties Evaluation of the Carbon Fibre Reinforced Aluminium Sandwich Composites

Tamilarasan¹,

Karunamoorthy

Palanikumar³

2015

Mat. Res.

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Sandwich laminates play an important role in industries and they are used in varieties of engineering applications. In the present investigation, carbon fiber reinforced aluminium sandwich laminates are fabricated and their properties such as tensile, flexural and impact are studied for their use in structural applications. All the tests are carried out as per ASTM standard. Scanning Electron Microscope (SEM) analysis is carried out to investigate the structure of the sandwich laminates. The microstructures clearly indicate the fractured surface. The tested specimen clearly indicates the fracture surface of the sandwich composites.

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“…In a nickel-coated carbon-fibre-reinforced AMC, thermal stresses arising due to temperature gradient resulted in the failure of nickel coating [51] . Thermal residual stresses were significantly reduced by using a thermal expansion clamp during curing in the case of a carbon-fibrereinforced aluminium laminates (CARALL) [52] .…”

Section: Thermal Stressesmentioning

confidence: 99%

The behaviour of aluminium matrix composites under thermal stresses

Dash

Sukumaran

Ray

2014

Science and Engineering of Composite Materials

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The present review work elaborates the behaviour of aluminium matrix composites (AMCs) under various kinds of thermal stresses. AMCs find a number of applications such as automobile brake systems, cryostats, microprocessor lids, space structures, rocket turbine housing, and fan exit guide vanes in gas turbine engines. These applications require operation at varying temperature conditions ranging from high to cryogenic temperatures. The main objective of this paper was to understand the behaviour of AMCs during thermal cycling, under induced thermal stresses and thermal fatigue. It also focuses on the various thermal properties of AMCs such as thermal conductivity and coefficient of thermal expansion (CTE). CTE mismatch between the reinforcement phase and the aluminium matrix results in the generation of residual thermal stress by virtue of fabrication. These thermal stresses increase with increasing volume fraction of the reinforcement and decrease with increasing interparticle spacing. Thermal cycling enhances plasticity at the interface, resulting in deformation at stresses much lower than their yield stress. Low and stable CTE can be achieved by increasing the volume fraction of the reinforcement. The thermal fatigue resistance of AMC can be increased by increasing the reinforcement volume fraction and decreasing the particle size. The thermal conductivity of AMCs decreases with increase in reinforcement volume fraction and porosity.

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Reduction of thermal residual stress in carbon fiber aluminum laminates using a thermal expansion clamp

Cited by 50 publications

References 14 publications

Evaluation of residual stress development in FRP-metal hybrids using fiber Bragg grating sensors

Evaluation of residual stress development in FRP-metal hybrids using fiber Bragg grating sensors

Mechanical Properties Evaluation of the Carbon Fibre Reinforced Aluminium Sandwich Composites

The behaviour of aluminium matrix composites under thermal stresses

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