Advanced Fiber Metal Laminates Filled with Silicon Dioxide Nanoparticles with Enhanced Mechanical Properties

2021 ◽  
Author(s):  
D. Saber ◽  
M. A. Abd El-baky ◽  
M. A. Attia
Keyword(s):  
Mechanical Properties ◽  
Silicon Dioxide ◽  
Silicon Dioxide Nanoparticles ◽  
Fiber Metal Laminates ◽  
Fiber Metal

Residual Stresses in Intrinsic UD-CFRP-Steel-Laminates - Experimental Determination, Identification of Sources, Effects and Modification Approaches

2015 ◽  
Vol 825-826 ◽  
pp. 369-376 ◽  
Author(s):  
Robert Prussak ◽  
Daniel Stefaniak ◽  
Christian Hühne ◽  
Michael Sinapius
Keyword(s):  
Mechanical Properties ◽  
Residual Stress ◽  
Tensile Strength ◽  
Epoxy Composite ◽  
Thermal Residual Stress ◽  
Fiber Metal Laminates ◽  
Fiber Metal ◽  
Impact Energies ◽  
The Impact ◽  
Specific Impact

This paper focuses on the reduction of process-related thermal residual stress in fiber metal laminates and its impact on the mechanical properties. Different modifications during fabrication of co-cure bonded steel/carbon epoxy composite hybrid structures were investigated. Specific examinations are conducted on UD-CFRP-Steel specimens, modifying temperature, pressure or using a thermal expansion clamp during manufacturing. The impact of these parameters is then measured on the deflection of asymmetrical specimens or due yield-strength measurements of symmetrical specimens. The tensile strength is recorded to investigate the effect of thermal residual stress on the mechanical properties. Impact tests are performed to determine the influence on resulting damage areas at specific impact energies. The experiments revealed that the investigated modifications during processing of UD-CFRP-Steel specimens can significantly lower the thermal residual stress and thereby improve the tensile strength.

The effect of an elastomer interlayer thickness variation on the mechanical properties of Fiber-Metal-Laminates

2019 ◽  
Vol 219 ◽  
pp. 90-96 ◽  
Author(s):  
Matthias M. Stoll ◽  
Vincent Sessner ◽  
Manuel Kramar ◽  
Jakob Technau ◽  
Kay A. Weidenmann
Keyword(s):  
Mechanical Properties ◽  
Thickness Variation ◽  
Interlayer Thickness ◽  
Fiber Metal Laminates ◽  
Fiber Metal

A review of mechanical drilling on fiber metal laminates

2020 ◽  
pp. 002199832095774
Author(s):  
Eduardo Pires Bonhin ◽  
Sarah David-Müzel ◽  
Manoel Cléber de Sampaio Alves ◽  
Edson Cocchieri Botelho ◽  
Marcos Valério Ribeiro
Keyword(s):  
Mechanical Properties ◽  
Cutting Parameters ◽  
Burr Formation ◽  
Drilling Process ◽  
Machining Parameters ◽  
Specific Mass ◽  
Fiber Metal Laminates ◽  
Dimensional Error ◽  
Main Method ◽  
Fiber Metal

The use of fiber metal laminates (FML) in aeronautics components has been increased in the last years, mainly due to the gain in mechanical properties combined with low specific mass. However, in the assembly of these materials on the structures to which they will be attached, mechanical screwing is still the main method used, which requires the performance of drilling processes. Something it is very complicated for these materials and can cause damage that compromises the performance. Therefore, this work aims to approach and summarize the evolution of the mechanical drilling process on FML developed in the last years. By the work, the main problems that occur during the drilling of these materials are punctually approached, such as delamination, burr formation, dimensional error, poor roughness, and tool wear. In addition, it is presented how these problems are affected by the machining parameters (cutting parameters, geometry, material/coating tool, and cutting environment), as well as suggestions for minimizing process problems. Thus, the article intends to provide as much information as possible available in the literature, seeking to help researchers gain a comprehensive view of the mechanical drilling of fiber metal laminates.

scholarly journals The Mechanical Properties of Fiber Metal Laminates Based on 3D Printed Composites

Materials ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5264
Author(s):  
Bharat Yelamanchi ◽  
Eric MacDonald ◽  
Nancy G. Gonzalez-Canche ◽  
Jose G. Carrillo ◽  
Pedro Cortes
Keyword(s):  
Mechanical Properties ◽  
3D Printing ◽  
High Velocity ◽  
Mechanical Performance ◽  
High Velocity Impact ◽  
Low Velocity ◽  
Fiber Metal Laminates ◽  
Velocity Impact ◽  
3D Printed ◽  
Fiber Metal

The production and mechanical properties of fiber metal laminates (FMLs) based on 3D printed composites have been investigated in this study. FMLs are structures constituting an alternating arrangement of metal and composite materials that are used in the aerospace sector due to their unique mechanical performance. 3D printing technology in FMLs could allow the production of structures with customized configuration and performance. A series of continuous carbon fiber reinforced composites were printed on a Markforged system and placed between layers of aluminum alloy to manufacture a novel breed of FMLs in this study. These laminates were subjected to tensile, low velocity and high velocity impact tests. The results show that the tensile strength of the FMLs falls between the strength of their constituent materials, while the low and high velocity impact performance of the FMLs is superior to those observed for the plain aluminum and the composite material. This mechanism is related to the energy absorption process displayed by the plastic deformation, and interfacial delamination within the laminates. The present work expects to provide an initial research platform for considering 3D printing in the manufacturing process of hybrid laminates.

EFFECT OF SILICON DIOXIDE NANOPARTICLES ON MECHANICAL PROPERTIES OF CARBON FIBER/UNSATURATED POLYESTER COMPOSITE

2021 ◽  
Vol 25 (Special) ◽  
pp. 2-91-2-98
Author(s):  
Ghufran K. Nahedh ◽  
◽  
Amer H. Majeed ◽  
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Silicon Dioxide ◽  
Unsaturated Polyester ◽  
Impact Resistance ◽  
Weight Ratio ◽  
Dispersion Method ◽  
Silicon Dioxide Nanoparticles ◽  
Polyester Composite ◽  
Partial Weight

This study deals with the effect of silicon dioxide nanoparticles (SiO2NPs) on the mechanical properties of polymer matrix composite (PMC). The nanocomposites were prepared by adding carbon fiber (CF1.5%) to the unsaturated polyester resin, and then different proportions of SiO2 NPs (1 to 4% by weight) were added using the ultrasonic bath machine dispersion method. The results showed that the tensile strength decreases with the increase in the partial weight of SiO2. Impact resistance, bending and compressive strength were improved by (50.67%, 10.2%, and 18.14%) respectively at 2% by weight, then these properties decreased with the increase in weight ratio of (SiO2), and the hardness was improved by (19.7%) at 3% by weight. The present study aims to study the effect of adding silicon dioxide nanoparticles on the mechanical properties (tensile properties, compression, hardness and bending) of carbon fiber reinforced unsaturated polyester composite.

The Influence of Loading Rate on the Interfacial Fracture Toughness of Carbon Fiber-Metal Laminates Based on Magnesium Alloy

2011 ◽  
Vol 328-330 ◽  
pp. 1373-1376 ◽  
Author(s):  
Gong Zhi Zhu ◽  
Chang Liang Zheng ◽  
Xiao Feng Lu
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Magnesium Alloy ◽  
Carbon Fiber ◽  
Loading Rate ◽  
Interfacial Fracture ◽  
Interfacial Fracture Toughness ◽  
Fiber Metal Laminates ◽  
Loading Rates ◽  
Fiber Metal

Glass fiber reinforced aluminum alloy laminates, such as ARALL, GLARE are used widely for aeronautics and astronautics industry with excellent mechanical properties such as high specific strength, specific Young’s Modulus, high damage tolerance, high resistance to fatigue crack growth and good impact resistance. In order to obtain better mechanical properties, aluminum alloy plates and glass fibers were replaced by magnesium alloy plates and carbon fibers to get carbon fiber-metal laminates based on magnesium alloy. Single cantilever beams were used to examine the influence of loading rate on the interfacial fracture toughness of carbon fiber-metal laminates based on magnesium alloy. The results show that crack propagation is stable at low loading rates whereas unstable at high rates. And loading rates have slight influence on interfacial fracture toughness at low rates range from 1mm/min to 1000mm/min. The fracture toughness at high rates in impact tests is greater than at low rate.

A new constitutive bulk material model to predict the uniaxial tensile nonlinear behavior of fiber metal laminates

2017 ◽  
Vol 53 (1) ◽  
pp. 26-35 ◽  
Author(s):  
Gholam Hossein Majzoobi ◽  
Mohammad Kashfi ◽  
Nicola Bonora ◽  
Gianluca Iannitti ◽  
Andrew Ruggiero ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Material Model ◽  
Tensile Tests ◽  
Uniaxial Tensile ◽  
Plastic Behavior ◽  
Processing Unit ◽  
Fiber Metal Laminates ◽  
Constitutive Material Model ◽  
Fiber Metal Laminate ◽  
Fiber Metal

In this investigation, a constitutive material model to predict elastic–plastic behavior of fiber metal laminates is introduced. The constants of the model can be obtained from the geometry and mechanical properties of the sublayers. This model can significantly reduce the computational efforts and central processing unit time by ignoring the contact between the fiber metal laminate layers. The ability of the model to predict plastic behavior of material makes it applicable to different metallic layers. Mechanical properties of each sublayer are obtained from tensile tests. The results of finite element analysis of the fiber metal laminate specimens using layered and bulk models revealed that the influence of glue was ignorable. The proposed model was validated by performing tensile tests on fiber metal laminate grades I and II and also on low and high metal volume fraction.

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