Evaluation of E glass epoxy composite laminate as an electromagnetically transparent aerospace material

Bhavya, S.; Velmurugan, R.; Arunachalam, Kavitha

doi:10.1016/j.matpr.2020.10.320

Cited by 5 publications

(4 citation statements)

References 4 publications

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“…This is consistent with the literature, which states that the strength of the composite materials improves at low temperatures [ 9 , 10 , 11 , 12 , 13 ]. The highest values, both at room temperature and at low temperatures, were recorded for the EP_1_3, EP_2_1, and EP_4_2 composites.…”

Section: Resultssupporting

confidence: 93%

“…For easier comparison, the numerical values of the strength of the laminates for all the tested composites at RT and −50 • C are summarized in Table 4. This is consistent with the literature, which states that the strength of the composite materials improves at low temperatures [9][10][11][12][13]. The highest values, both at room temperature and at low temperatures, were recorded for the EP_1_3, EP_2_1, and EP_4_2 composites.…”

Section: Tensile Propertiessupporting

confidence: 92%

“…The E-glass/epoxy-based material that was tested showed minimal dependence on temperature drops regarding its elastic modulus and tensile strength. A team of Bhavya scientists [ 13 ] developed an epoxy/glass laminate using various curing agents, which was tested for its tensile, flexural, shear, and impact properties. In analyzing the mechanical, dielectric, and thermal parameters, it was concluded that the composite with diethyl toluene diamine hardener was a better choice than the composite with triethylenetetramine as a hardener for use as an electromagnetically transparent mechanical coating for the antenna system.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Thermomechanical Loading at Low Temperatures on Damage Development in Glass Fiber Epoxy Laminates

Krzak,

Al-Maqdasi,

Nowak

et al. 2023

Materials

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Due to the high interest in the use of glass/epoxy laminates in aerospace applications, aviation, and as cryogenic tanks, it is crucial to understand the behavior of composites under challenging environmental conditions. Polymer composites are exposed to low temperatures, including cryogenic temperatures, which can lead to the initiation of microdamage. This paper investigates damage initiation/accumulation and its influence on the properties of cross-ply woven glass fiber epoxy composites at low temperatures compared to room temperature conditions. To evaluate the influence of a low-temperature environment on the mechanical performance of glass fiber reinforced epoxy composite (GFRP) laminates, three types of test campaigns were carried out: quasi-static tensile tests and stepwise increasing loading/unloading cyclic tensile tests at room temperature and in a low-temperature environment (−50 °C). We demonstrated that the initial stiffness of the laminates increased at low temperatures. On the other hand, there were no observed changes in the type or mechanism of developed damage in the two test conditions. However, the reduction in stiffness due to the accumulated damage was more significant for the laminates tested at low temperatures (~17% vs. ~11%). Exceptions were noted in a few formulations where the extent of damage at low temperatures was insignificant (<1%) compared to that at room temperature. Since some of the studied laminates exhibited a relatively minor decrease in stiffness (~2–3%), we can also conclude that the formulation of matrix material plays an important role in delaying the initiation and formation of damage.

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Section: Resultssupporting

confidence: 93%

Section: Tensile Propertiessupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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Effect of Thermomechanical Loading at Low Temperatures on Damage Development in Glass Fiber Epoxy Laminates

Krzak,

Al-Maqdasi,

Nowak

et al. 2023

Materials

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“…In recent times, there is a rapid growth in the use of composite materials in aerospace, automobile, civil infrastructures and marine industries. Composite materials have attractive features such as high stiffness, strength to weight ratio, good fatigue characteristics and electrochemical corrosion resistance (Bhavya et al, 2021;Hollaway, 2001;Kassapoglou, 2013). The properties of laminated composites can be tailored by modifying the fiber orientations, the number of plies and the layer thickness as per the industrial requirements.…”

Section: Introductionmentioning

confidence: 99%

Electro-structural modeling of smart laminated composite plate under hygrothermal environment for optimum vibration energy harvesting

Panda

Srinivas

2023

Journal of Intelligent Material Systems and Structures

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Smart laminated composite structures with piezoelectric patches are widely used in vibration control applications in several engineering fields. Precise mathematical models are required for the coupling of base structural and piezoelectric field variables. This paper presents the electro-structural analysis and optimization studies of piezoelectric energy harvester with laminated composite substrate plate subjected to base excitations. The coupled electro-mechanical equations are derived from recently proposed first-order shear deformation theory via the Hamilton’s principle by considering hygrothermal effects. The coupled-field solution is obtained from Ritz-approximation and validated with three-dimensional finite element analysis. Effects of multiple piezoelectric patch topologies over the plate surface on the open-circuit voltage and displacement response are illustrated. Furthermore, the influences of piezoelectric-patch sizes, ply-orientation, size, and location of the tip mass are initially studied on the magnitude of output power and efficiency. An optimization study is conducted to identify the geometric and material variables for improvement of the harvester power output and efficiency.

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Decreasing the hazardous effect of waste quartz powder and the toxicity of epoxy resin by its synergistic application in industrial coatings

Chowaniec

Czarnecki

Sadowski

2022

Environ Sci Pollut Res

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Evaluation of E glass epoxy composite laminate as an electromagnetically transparent aerospace material

Cited by 5 publications

References 4 publications

Effect of Thermomechanical Loading at Low Temperatures on Damage Development in Glass Fiber Epoxy Laminates

Effect of Thermomechanical Loading at Low Temperatures on Damage Development in Glass Fiber Epoxy Laminates

Electro-structural modeling of smart laminated composite plate under hygrothermal environment for optimum vibration energy harvesting

Decreasing the hazardous effect of waste quartz powder and the toxicity of epoxy resin by its synergistic application in industrial coatings

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