The Impact Properties of High-temperature Fiber-Metal Laminates

2006 ◽  
Vol 41 (5) ◽  
pp. 613-632 ◽  
Author(s):  
P. Cortés ◽  
W. J. Cantwell
Keyword(s):  
High Temperature ◽  
Fiber Metal Laminates ◽  
Impact Properties ◽  
Fiber Metal ◽  
The Impact

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 High Velocity Impact Response of Novel Fiber Metal Laminates

2001 ◽  
Author(s):  
Wesley J. Cantwell ◽  
Graham Wade ◽  
J. Fernando Guillen ◽  
German Reyes-Villanueva ◽  
Norman Jones ◽  
...  
Keyword(s):  
High Velocity ◽  
Impact Resistance ◽  
High Velocity Impact ◽  
Fiber Metal Laminates ◽  
Velocity Impact ◽  
Glass Fiber Reinforced ◽  
Fiber Metal ◽  
Energy Absorbing ◽  
Dynamic Loading Conditions ◽  
The Impact

Abstract The impact resistance of a range of novel fiber metal laminates based on polypropylene, polyamide and polyetherimide matrices has been investigated. Initial attention focused on optimizing the interface between the composite and aluminum alloy constituents. Here, it was shown that composite-metal adhesion was excellent in all systems examined. In addition, tests at crosshead displacement rates up to 3 m/s indicated that the interfacial fracture energies remained high under dynamic loading conditions. High velocity impact tests on a series of 3/2 laminates (3 layers of aluminum/2 layers of composite) highlighted the outstanding impact resistance of a number of these systems. The glass fiber reinforced polypropylene system offered a particularly high impact resistance exhibiting a perforation energy of approximately 160 Joules. Here, failure mechanisms such as extensive plastic drawing in the aluminum layers and fiber fracture in the composite plies were found to contribute to the excellent energy-absorbing characteristics of these systems.

The fracture properties of fiber metal laminates based on a 3D printed glass fiber composite

2020 ◽  
pp. 089270572097617
Author(s):  
B Yelamanchi ◽  
E MacDonald ◽  
NG Gonzalez-Canche ◽  
JG Carrillo ◽  
P Cortes
Keyword(s):  
3D Printing ◽  
Glass Fiber ◽  
High Velocity ◽  
Metal Composite ◽  
High Velocity Impact ◽  
Fiber Metal Laminates ◽  
Velocity Impact ◽  
Impact Performance ◽  
Fiber Metal ◽  
The Impact

Fiber Metal Laminates (FML) are structures that contain a sequential arrangement of metal and composite materials, which are of great interest to the aerospace sector due to the superior mechanical performance. The traditional manufacturing process for FML involves considerable investment in manufacturing resources depending on the design complexity of the desired components. To mitigate such limitations, 3D printing enables direct digital manufacturing to create FML with customized configurations. In this work, a preliminary mechanical characterization of additively-manufacturing-enabled FML has been investigated. A series of continuous glass fiber-reinforced composites were printed with a Markforged system and placed between layers of aluminum alloy to manufacture hybrid laminate structures. The laminates were subjected to tensile, interfacial fracture toughness, and both low-velocity and high-velocity impact tests. The results showed that the FMLs appear to have a good degree of adhesion at the metal-composite interface, although a limited intralaminar performance was recorded. It was also observed that the low and high-velocity impact performance of the FMLs was improved by 9–13% relative to that of the constituent elements. The impact performance of the FML appeared to be related to the fiber fracture, out of plane perforation and interfacial delamination within the laminates. The present study can provide an initial research foundation for considering 3D printing in the production of hybrid laminates for static and dynamic applications.

scholarly journals Experimental and numerical investigation of the impact response of elastomer layered fiber metal laminates (EFMLs)

2020 ◽  
Vol 245 ◽  
pp. 112264 ◽  
Author(s):  
Alireza Taherzadeh-Fard ◽  
Gholamhossein Liaghat ◽  
Hamed Ahmadi ◽  
Omid Razmkhah ◽  
Sahand Chitsaz Charandabi ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Impact Response ◽  
Fiber Metal Laminates ◽  
Fiber Metal ◽  
The Impact

Influence of fiber type on the impact response of titanium-based fiber-metal laminates

2018 ◽  
Vol 114 ◽  
pp. 32-42 ◽  
Author(s):  
Xin Li ◽  
Xin Zhang ◽  
Yangbo Guo ◽  
V.P.W Shim ◽  
Jinglei Yang ◽  
...  
Keyword(s):  
Fiber Type ◽  
Impact Response ◽  
Fiber Metal Laminates ◽  
Fiber Metal ◽  
The Impact

Long Term Degradation Behavior of Impact Properties of Hydraulic Forged Superalloy 718 during Exposure at High Temperature

2007 ◽  
Vol 26-28 ◽  
pp. 1071-1074
Author(s):  
Young Seok Song ◽  
M.R. Lee ◽  
Jeong Tae Kim
Keyword(s):  
High Temperature ◽  
Impact Energy ◽  
Melting Process ◽  
Hydraulic Press ◽  
Degradation Behavior ◽  
Impact Properties ◽  
Hardness Tests ◽  
Temperature Exposure ◽  
The Impact

To check long term degradation behavior of hydraulic forged superalloy 718 during exposure at high temperature, an Alloy 718 ingot with a diameter of 400mm was manufactured by the vacuum melting process, VIM followed by VAR. The ingot was broken down for uniform microstructure and mechanical properties by a controlled cogging process using a hydraulic press. To investigate long term degradation behavior of impact properties and hardness, the specimens were exposed to 600oC, 650oC and 700oC for holding times up to 12,112 hours. Impact energy absorption tests were performed at room temperature. The fractured area and the microstructure of the impact specimens were observed by OEM and SEM and Brinell hardness tests were also performed. The changes of impact energy and hardness are remarkably different for each temperature condition. The results suggest that the impact properties and hardness of Ni based superalloy 718 is strongly related to temperature and time during high temperature exposure.

Enhancement of performance of three-dimensional fiber metal laminates under low velocity impact – A coupled numerical and experimental investigation

2017 ◽  
Vol 21 (6) ◽  
pp. 2127-2153 ◽  
Author(s):  
Zohreh Asaee ◽  
Farid Taheri
Keyword(s):  
Three Dimensional ◽  
Absorption Capacity ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Fiber Metal Laminates ◽  
Velocity Impact ◽  
Finite Element Software ◽  
Fiber Metal ◽  
Time And Energy ◽  
The Impact

The main objective of the present study is to examine the level of enhancement in performance of three-dimensional fiber metal laminates (3DFML) under low velocity impact, when reinforced by different types of reinforcing face-sheets (i.e. fiberglass or carbon). Three layup configurations of the fabrics are considered in this investigation. The impact response of each of these configurations is assessed numerically using ABAQUS/Explicit, a commercially available finite element software. Specifically, each configuration’s impact capacity, deformation, contact time, and energy absorption capacity are evaluated. The numerical results are validated by comparison against experimental results. Moreover, a semi-empirical equation is developed for evaluating the impact capacity of such panels, as a function of impact energy, capable of accounting the influence of any type of reinforcement. Finally, the most efficient reinforced three-dimensional fiber metal laminates are identified based on their impact strength with respect to their overall weight and cost.

Effect of salt water conditioning on novel fiber metal laminates for marine applications

2018 ◽  
Vol 233 (8) ◽  
pp. 1542-1554 ◽  
Author(s):  
M Najafi ◽  
A Darvizeh ◽  
R Ansari
Keyword(s):  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Salt Water ◽  
Matrix Composites ◽  
Fiber Metal Laminates ◽  
Glass Fiber Reinforced ◽  
Fiber Metal Laminate ◽  
Fiber Metal ◽  
Marine Applications ◽  
The Impact

One of the issues with the widespread use of polymer matrix composites in marine applications is their high susceptibility to environmental degradation, particularly hygrothermal conditions. Therefore, the present research intends to contribute to the better protection of the marine polymer matrix composites through the introduction of a newly developed fiber metal laminate for marine applications. This type of fiber metal laminate consists of a marine aluminum alloy of 5083 alternating with glass fiber reinforced epoxy composite layers. In order to evaluate the characterization of the environmental durability of this novel material, the specimens made of fiber metal laminates as well as commercial woven glass–epoxy composites were exposed to hygrothermal aging and hygrothermal cycling in boiling salt water. Then, to study the structural degradation caused by exposure to salt water, the mechanical properties of fiber metal laminate and woven glass–epoxy specimens under three-point bending and impact loading were evaluated. Results show that exposure to the saline environment generally decreased the flexural strength of woven glass–epoxy and fiber metal laminate specimens, whereas a smaller deterioration in flexural stiffness of both laminate types was found. Moreover, it was observed that the hygrothermal conditioning in salt water did not affect significantly the impact properties of both the fiber metal laminate and woven glass–epoxy specimens as compared to the flexural properties.

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