The impact resistance of polypropylene-based fibre–metal laminates

2006 ◽  
Vol 66 (11-12) ◽  
pp. 1682-1693 ◽  
Author(s):  
M ABDULLAH ◽  
W CANTWELL
Keyword(s):  
Impact Resistance ◽  
Fibre Metal Laminates ◽  
Fibre Metal ◽  
The Impact

scholarly journals Experimental Investigation on the Low Velocity Impact Response of Fibre Foam Metal Laminates

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5510
Author(s):  
Patryk Jakubczak ◽  
Magda Droździel ◽  
Piotr Podolak ◽  
Jesus Pernas-Sánchez
Keyword(s):  
Sandwich Structures ◽  
Impact Resistance ◽  
Impact Testing ◽  
Low Velocity Impact ◽  
Stress Concentrations ◽  
Fibre Metal Laminates ◽  
Matrix Cracks ◽  
Foam Metal ◽  
Fibre Metal ◽  
The Impact

The combination of fibre metal laminates (FML) and sandwich structures can significantly increase the performance under impact of FMLs. The goal of this work was to create a material that will combine the superior properties of FMLs and foam sandwich structures in terms of the impact resistance and simultaneously have lower density and fewer disadvantages related to the manufacturing. An extensive impact testing campaign has been done using conventional fibre metal laminates (carbon- and glass-based) and in the proposed fibre foam metal laminates to assess and compare their behaviour. The main difference was observed in the energy absorption mechanisms. The dominant failure mechanism for fibre foam laminates is the formation of delaminations and matrix cracks while in the conventional fibre metal laminate the main failure mode is fibre cracking due to high local stress concentrations. The reduction in the fibre cracking leads to a better after-impact resistance of this type of structure improving the safety of the structures manufactured with these materials.

Mechanical Properties of Fibre-Metal Composites Connected by Means of Bolt Joints

2013 ◽  
Vol 837 ◽  
pp. 296-301
Author(s):  
Sławomir Zolkiewski
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Polyester Resin ◽  
Steel Plate ◽  
Fibrous Composite ◽  
Laminate Plate ◽  
Strength Properties ◽  
Fibre Metal Laminates ◽  
Fibre Metal ◽  
The Impact

The fibre-metal laminates made of a steel plate and fibreglass laminate plate were tested in the special laboratory stands. Epoxy resin and polyester resin were used as matrix to fabricate the composites. The fibre-metal laminates combine advantages of metals and laminates. These materials have very good force versus displacement characteristics and overall mechanical properties. They are very popular and widely applied in technical systems. They can be put to use in connecting materials made of various fabrics, connecting high number layer laminates and most of all connecting metals and laminates. In this paper there are the results of testing fibrous composite materials connected in bolt joints presented. Composite materials reinforced with fiberglass, carbon and aramid fibers are considered. The impact of number of applied bolts in a joint on strength properties was investigated. The connections by means of eight or sixteen bolts were compared. A major problem of modelling the composites is assuming physical and material parameters of the analyzed elements.

scholarly journals Impact Damage Characteristics of Carbon Fibre Metal Laminates: Experiments and Simulation

2020 ◽  
Vol 27 (5) ◽  
pp. 511-531
Author(s):  
Y. Shi ◽  
C. Pinna ◽  
C. Soutis
Keyword(s):  
Carbon Fibre ◽  
Impact Damage ◽  
Fibre Composite ◽  
Element Model ◽  
Fibre Metal Laminates ◽  
Composite Layers ◽  
Fibre Metal ◽  
Improved Design ◽  
Cohesive Zone Elements ◽  
The Impact

Abstract In this work, the impact response of carbon fibre metal laminates (FMLs) was experimentally and numerically studied with an improved design of the fibre composite lay-up for optimal mechanical properties and damage resistance. Two different stacking sequences (Carall 3–3/2–0.5 and Carall 5–3/2–0.5) were designed and characterised. Damage at relatively low energy impact energies (≤30 J) was investigated using Ultrasonic C-scanning and X–ray Computed Tomography (X-RCT). A 3D finite element model was developed to simulate the impact induced damage in both metal and composite layers using Abaqus/Explicit. Cohesive zone elements were introduced to capture delamination occurring between carbon fibre/epoxy plies and debonding at the interfaces between aluminium and the composite layers. Carall 5–3/2–0.5 was found to absorb more energy elastically, which indicates better resistance to damage. A good agreement is obtained between the numerically predicted results and experimental measurements in terms of force and absorbed energy during impact where the damage modes such as delamination was well simulated when compared to non-destructive techniques (NDT).

Study of low-cycle fatigue of glass-hybrid laminates

2018 ◽  
Vol 90 (3) ◽  
pp. 489-495 ◽  
Author(s):  
Krzysztof Majerski ◽  
Barbara Surowska ◽  
Jaroslaw Bienias ◽  
Jaroslaw Szusta
Keyword(s):  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
Fibre Metal Laminates ◽  
Content Type ◽  
Static Test ◽  
Open Hole ◽  
Hybrid Laminates ◽  
Fibre Metal ◽  
Number Of Cycles ◽  
The Impact

Purpose The purpose of this study is to investigate the results of reinforcing fibre metal laminates with glass fibres under low-cycle fatigue conditions in a limited number of cycles. Design/methodology/approach The tests were carried out on open-hole rectangular specimens loaded in tension-tension at high load ranges of 80 and 85 per cent of maximum force determined in static test, correspondingly. The number of cycles for destruction has been determined experimentally. Findings By means of microscopic observations, it was possible to determine the moment of crack initiation and their growth rate. Furthermore, it was possible to identify the impact of reinforcing fibre orientation in composite layers, material creating the metal layers, on fatigue life and on nature of crack propagation. Practical implications This work validates the possibility of increasing the resistance of fibre metal laminates to low-cycle fatigue by modifying the structure of the laminate. Originality/value The resistance of fibre metal laminates on low-cycle fatigue is not widely described and the phenomena occurring during degradation are poorly understood.

The influence of fibre orientation in aluminium–carbon laminates on low-velocity impact resistance

2017 ◽  
Vol 52 (8) ◽  
pp. 1005-1016 ◽  
Author(s):  
Patryk Jakubczak ◽  
Jarosław Bienias ◽  
Barbara Surowska
Keyword(s):  
Energy Absorption ◽  
Fibre Orientation ◽  
Impact Resistance ◽  
Bending Stiffness ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact ◽  
Damage Area ◽  
Fibre Metal ◽  
The Impact

The objective of this study was to assess the influence of fibre orientation in hybrid fibre metal laminates based on aluminium and carbon fibres on the impact of low-velocity impact. The analysis was conducted on the basis of fibre metal laminate impact resistance criteria, including impact force, energy absorption, bending stiffness, damage area and failure. To assess the resistance of various aluminium–carbon laminates, qualitative and quantitative evaluation criteria were employed, including the shape of the force–time curve, characteristic impact forces, energy absorption, bending stiffness, damage area and external failure analysis. Among others, authors concluded that no explicit influence of the composite layer fibre orientation on the shape and value of characteristic forces was observed. It was found that the fibre orientation and the changing number of interfaces of low durability show no explicit influence on the size and shape of delaminations.

scholarly journals Multi-Excitation Infrared Fusion for Impact Evaluation of Aluminium-BFRP/GFRP Hybrid Composites

Sensors ◽  
2021 ◽  
Vol 21 (17) ◽  
pp. 5961
Author(s):  
Jue Hu ◽  
Hai Zhang ◽  
Stefano Sfarra ◽  
Stefano Perilli ◽  
Claudia Sergi ◽  
...  
Keyword(s):  
High Performance ◽  
Hybrid Composites ◽  
Optical Excitation ◽  
Fusion Imaging ◽  
Basalt Fibre ◽  
Plastic Properties ◽  
Fibre Metal Laminates ◽  
Reinforced Plastic ◽  
Fibre Metal ◽  
The Impact

Fibre metal laminates are widely implemented in the aerospace industry owing to the merits of fatigue resistance and plastic properties. An effective defect assessment technique needs to be investigated for this type of composite materials. In order to achieve accurate impact-induced damage evaluation, a multi-excitation infrared fusion method is introduced in this study. Optical excitation thermography with high performance on revealing surface and subsurface defects is combined with vibro-thermography to improve the capability of detection on defects. Quantitative analysis is carried out on the temperature curve to assess the impact-induced deformation. A new image fusion framework including feature extraction, feature selection and fusion steps is proposed to fully utilize the information from two excitation modalities. Six fibre metal laminates which contain aluminium-basalt fibre reinforced plastic and aluminium-glass fibre reinforced plastic are investigated. Features from different perspectives are compared and selected via intensity contrast on deformation area for fusion imaging. Both types of defects (i.e., surface and sub-surface) and the internal deformation situation of these six samples are characterized clearly and intuitively.

Assessment of the influence of thermal load on the impact response of carbon fibre-metal laminates

2015 ◽  
Vol 19 (sup8) ◽  
pp. S8-102-S8-106 ◽  
Author(s):  
X. Tang ◽  
Z. Wang ◽  
H. Lv ◽  
J. Guo ◽  
S. Fang
Keyword(s):  
Carbon Fibre ◽  
Thermal Load ◽  
Impact Response ◽  
Fibre Metal Laminates ◽  
Fibre Metal ◽  
The Impact
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