The Effect of Embedded Optical Fibers on the Static Mechanics of Composite Materials

Tian, Heng; Ji, Yun Dong; Wang, Ji Hui; Yin, Yan Zi; Sun, Jiu Xiong

doi:10.4028/www.scientific.net/amr.233-235.2387

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…Different types of sensors ranging from Lead Zirconate Titanate (PZT) and fiber optics sensors to internal cavities in comparative vacuum monitoring (CVM) method were investigated by authors. The embedding of optical fibers in the composite structure and their impacts on the integrity and mechanical behavior of the structure are widely studied in several works [10][11][12][13]. Among them Shivakumar et al studied the formation of resin rich zones caused by geometric distortion of reinforcing fibers near embedded fiber optics [14].…”

Section: Introductionmentioning

confidence: 99%

Effect of embedded printed circuit board (PCB) sensors on the mechanical behavior of glass fiber-reinforced polymer (GFRP) structures

Javdanitehran

Hoffmann

Groh

et al. 2016

Smart Mater. Struct.

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The embedding of dielectric chipless sensors for cure monitoring into fiber-reinforced thermosets allows for monitoring and controlling the curing process and consequently higher quality in production. The embedded sensors remain after the processing in the structure. This affects the integrity of the composite structure locally. In order to investigate these effects on the mechanical behavior of the glass fiber-reinforced polymer (GFRP), sensors made on special low loss substrates are integrated into laminates with different lay-ups and thicknesses using vacuum assisted resin transfer molding (VARTM) method. In a parametric study the size of the sensor is varied to observe its influence on the strength and the stiffness of the laminates according to its lay-up and thickness. The size and orientation of the resin rich areas near sensors as well as the distortion in load bearing area as the consequences of the introduction of the sensors are investigated in conjunction with the strength of the structure. An empirical model is proposed by the authors which involves the previously mentioned factors and is used as a rapid tool for the prediction of the changes in bending and tensile strength of simple structures with embedded sensors. The methodology for model's calibration as well as the validation of the model against the experimental data of different laminates with distinct lay-ups and thicknesses are presented in this work. Mechanical tests under tensile and bending loading indicate that the reduction of the structure's strength due to sensor integration can be attributed to the size and the orientation of rich resin zones and depends over and above on the size of distorted load bearing area. Depending on the sensor's elastic modulus the stiffness of the structure may vary through the introduction of a sensor.

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Section: Introductionmentioning

confidence: 99%

Effect of embedded printed circuit board (PCB) sensors on the mechanical behavior of glass fiber-reinforced polymer (GFRP) structures

Javdanitehran

Hoffmann

Groh

et al. 2016

Smart Mater. Struct.

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Loading Behavior Investigation of Composite Single Lap Adhesive Joints

et al. 2013

AMM

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Adhesive bonding as a promising join technique for composites is not widely used for the absence of absolutely understanding of loading behavior. In this paper both electric-strain gages and FBG sensors were employed to get the internal and surface strain of adhesive joint. In the experiment, nonlinear behavior is observed. Then the test data were compared with FEM results. It is showed that they meet each other well, FEM could get the stress distribution in adhesive bond composite joint, and both biggest peel stress and shear stress are appear at the end of adhesive.

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The Effect of Embedded Optical Fibers on the Static Mechanics of Composite Materials

Cited by 2 publications

References 6 publications

Effect of embedded printed circuit board (PCB) sensors on the mechanical behavior of glass fiber-reinforced polymer (GFRP) structures

Effect of embedded printed circuit board (PCB) sensors on the mechanical behavior of glass fiber-reinforced polymer (GFRP) structures

Loading Behavior Investigation of Composite Single Lap Adhesive Joints

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