Influence of hybridization on in-plane shear properties of 2D & 3D thermoplastic composites reinforced with Kevlar/basalt fabrics

2017 ◽  
Vol 61 ◽  
pp. 396-403 ◽  
Author(s):  
Aswani Kumar Bandaru ◽  
Vijay Kumar Mittal ◽  
Suhail Ahmad ◽  
Naresh Bhatnagar
Keyword(s):  
Thermoplastic Composites ◽  
Plane Shear ◽  
Shear Properties

scholarly journals Assessment of the shear properties of thermoplastic composites using the ±45° tension and the V-notched rail shear methods

2020 ◽  
Vol 7 ◽  
pp. 10
Author(s):  
Antonios G. Stamopoulos ◽  
Luca Glauco Di Genova ◽  
Antoniomaria Di Ilio
Keyword(s):  
Mechanical Performance ◽  
Thermoplastic Composites ◽  
Testing Methods ◽  
Plane Shear ◽  
Shear Properties ◽  
Thermoplastic Matrix ◽  
Glass Fiber Reinforced ◽  
Reinforced Thermoplastics ◽  
Stress Uniformity

Composite materials consisting of thermoplastic matrix are gaining the interest of both the aeronautical and the automotive industry as they comprise a series of advantages regarding their mechanical performance, their recyclability and their ability to be produced in large quantities. Nevertheless, some notable drawbacks have been noticed related to the fabrication process affecting their in-plane shear properties the characterization of which is complicated. Among the notable number of testing methods proposed throughout the years, several advantages and drawbacks were observed, mostly related to the way the load is applied, the stress uniformity and the applicability of each method to various material architectures. In the present work, the modified V-notched rail shear and the ±45° shear testing methods are applied to short and textile glass fiber reinforced thermoplastics aiming to assess the influence of both the fabrication method and the strands direction. Consecutively, the results obtained from the two different testing methods are compared revealing a relatively good agreement while, in parallel, the stress uniformity and the local failures observed on the specimens are analyzed.

Water absorption effect on the in-plane shear properties of jute–glass–carbon-reinforced composites using Iosipescu test

2018 ◽  
Vol 53 (21) ◽  
pp. 3033-3045 ◽  
Author(s):  
MA Abd El-baky ◽  
MA Attia
Keyword(s):  
Water Absorption ◽  
Water Uptake ◽  
Sea Water ◽  
Water Immersion ◽  
Cost Effective ◽  
Stacking Sequence ◽  
Plane Shear ◽  
Noticeable Effect ◽  
Shear Properties ◽  
Glass Carbon

The main objective of the present paper is to study the water absorption of jute–glass–carbon-reinforced epoxy composites and its subsequent effect on the in-plane shear performance of these composites. The effects of the reinforcement hybridization, stacking sequence and relative fabric amounts on the shear behavior of dry and wet conditioned composite specimens are reported and discussed. Composites have been fabricated in inter-ply configuration using the hand lay-up process. The prepared specimens have been subjected to distilled water and sea water immersion at room temperature for 60 days. Results indicated that water uptake of jute-reinforced composite and its hybrids with glass and/or carbon follows Fickian-like behavior. Water uptake induces a significant decrease in the in-plane shear strength. Hybridizing jute fabric with glass and/or carbon fabrics improves the in-plane shear properties of both dry and wet specimens. The stacking sequence and relative fabric amounts have a noticeable effect on the studied shear properties. Also, the hybrid composite with jute as facings and glass as core, JGJ, offers the most balanced set of properties on a cost-effective basis compared to the other studied hybrids.

Flexural, in-plane shear and nail shear properties of falcataria-rubberwood laminated veneer board for flooring

Holzforschung ◽  
2008 ◽  
Vol 62 (6) ◽  
Author(s):  
Kweonhwan Hwang ◽  
EeDing Wong ◽  
Kohei Komatsu
Keyword(s):  
Radiata Pine ◽  
Strength Properties ◽  
Larix Leptolepis ◽  
Structural Components ◽  
Shear Tests ◽  
Plane Shear ◽  
Paraserianthes Falcataria ◽  
Shear Properties ◽  
Laminated Veneer Lumber ◽  
Good Potential

Abstract A research project has been conducted to develop structural laminated veneer lumber products from tropical wood, and to evaluate their feasibility for the structural components of wooden houses. As part of this project, we investigated the flexural, in-plane shear, and nail shear properties of laminated veneer board (LVB) manufactured from a combination of falcataria (Paraserianthes falcataria) and rubberwood (Hevea brasiliensis) for flooring applications. In addition, 11-ply larch (Larix leptolepis) and 7-ply radiata pine (Pinus radiata) plywood were investigated as controls. Larch plywood, bonded with phenol-based adhesive, showed the best strength properties in bending and shear tests, whereas the 12-ply (28 mm thick) resorcinol-based resin-bonded LVB had the highest ductility in nail shear. The LVB also had better bending and shear properties than radiata pine plywood. In conclusion, falcataria-rubberwood LVB demonstrated good potential to substitute larch plywood and radiata pine plywood in flooring applications.

Out-of-plane shear properties of glass/epoxy composites enhanced with carbon-nanofibers

2016 ◽  
Vol 55 ◽  
pp. 278-286 ◽  
Author(s):  
F. Taheri-Behrooz ◽  
M. Esmkhani ◽  
A. Yaghoobi-Chatroodi ◽  
S.M. Ghoreishi
Keyword(s):  
Carbon Nanofibers ◽  
Epoxy Composites ◽  
Plane Shear ◽  
Shear Properties ◽  
Out Of Plane

SHEAR PROPERTY OF STRUCTURAL EPOXY ADHESIVE EXPOSED TO TROPICAL WEATHERING CONDITION

2015 ◽  
Vol 77 (8) ◽  
Author(s):  
Shukur Abu Hassan ◽  
Yob Saed Ismail ◽  
Abdul Rahman Mohd. Sam ◽  
Umar Abdul Hanan ◽  
Mat Uzir Wahit
Keyword(s):  
Structural Integrity ◽  
Elevated Temperatures ◽  
Salt Water ◽  
Epoxy Adhesive ◽  
Test Method ◽  
Plain Water ◽  
Plane Shear ◽  
Shear Properties ◽  
Shear Property ◽  
Epoxy Material

As a consequence of tropical climate featuring abundant rain and sunshine throughout the year, adhesive bonded joints undergo substantial exposure to moisture and elevated temperatures. It is known that the degradation of adhesive materials such as structural epoxy due to weathering could affect the overall bond performance of structural integrity of reinforced concrete such as carbon fibre reinforced polymer composites (CFRP) plate system. The objective of the study is to investigate the in-plane shear properties of structural epoxy material exposed to tropical environmental conditions using Arcan Test Method. The epoxy adhesive was casted in a closed metal mould to produce butterfly shaped specimens. The specimens were exposed to four conditions; laboratory, outdoor, plain water, and salt water. The specimens were tested for shear properties and failed in brittle form. Microstructure analysis was performed to study the fracture surface of the test specimens. The study showed that the tropical exposure conditions influenced the shear strength of the epoxy material, especially for those exposed to plain and salt water conditions, which were 32% lower than the control specimen for specimens exposed to plain water followed by salt water (26.6%), laboratory (25.4%) and finally outdoor (18.4%).

scholarly journals A comparison of mechanical properties and X-ray tomography analysis of different out-of-autoclave manufactured thermoplastic composites

2020 ◽  
Vol 39 (19-20) ◽  
pp. 703-720
Author(s):  
Diego Saenz-Castillo ◽  
María I Martín ◽  
Vanessa García-Martínez ◽  
Abhiram Ramesh ◽  
Mark Battley ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Raw Material ◽  
Thermoplastic Composites ◽  
Scanning Calorimetry ◽  
Consolidation Process ◽  
Plane Shear ◽  
X Ray ◽  
Void Distribution ◽  
Out Of Autoclave

Three different out-of-autoclave manufacturing processes of CF/poly-ether-ether-ketone thermoplastic composites were characterized, including innovative laser-assisted automated fibre placement with in situ consolidation. Characterization techniques included differential scanning calorimetry, ultrasonic non-destructive testing and matrix digestion, in addition to 3D X-ray microcomputed tomography to investigate the void distribution, size and shape. The results revealed that in situ consolidation process can lead to the accumulation of large voids between the upper layers. Interlaminar shear, in-plane shear, tensile and flexure testing were used for mechanical evaluation. A reduction in the mechanical properties was observed for in situ consolidation laminates when compared to the other out-of-autoclave methods. The drop in mechanical properties of in situ consolidation laminates was mainly attributed to the differences found in void distribution and size. Optimization of processing parameters along with higher quality prepreg raw material could be of assistance for the improvement of mechanical properties of in situ consolidation structures.

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