scholarly journals Fracture Toughness Investigation on Long Kenaf/Woven Glass Hybrid Composite Due To Water Absorption Effect

2012 ◽  
Vol 41 ◽  
pp. 1667-1673 ◽  
Author(s):  
Z. Salleh ◽  
Y.M. Taib ◽  
Koay Mei Hyie ◽  
M. Mihat ◽  
M.N. Berhan ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Water Absorption ◽  
Hybrid Composite ◽  
Absorption Effect ◽  
Water Absorption Effect

scholarly journals Pattern Dynamics of Vegetation Growth With Saturated Water Absorption

2021 ◽  
Vol 9 ◽  
Author(s):  
Li Li ◽  
Jia-Hui Cao ◽  
Xin-Yue Bao
Keyword(s):  
Water Absorption ◽  
Vegetation Dynamics ◽  
Vegetation Pattern ◽  
Typical Feature ◽  
Water Model ◽  
Absorption Effect ◽  
Vegetation Growth ◽  
Pattern Dynamics ◽  
Saturated Water ◽  
Water Absorption Effect

Regular pattern is a typical feature of vegetation distribution and thus it is important to study the law of vegetation evolution in the fields of desertification and environment conservation. The saturated water absorption effect between the soil water and vegetation plays an crucial role in the vegetation patterns in semi-arid regions, yet its influence on vegetation dynamics is largely ignored. In this paper, we pose a vegetation-water model with saturated water absorption effect of vegetation. Our results show that the parameter 1/P, which is conversion coefficient of water absorption, has a great impact on pattern formation of vegetation: with the increase of P, the density of vegetation decrease, and meanwhile it can induce the transition of different patterns structures. In addition, we find that the increase of appropriate precipitation can postpone the time on the phase transition of the vegetation pattern. The obtained results systematically reveal the effect of saturated water absorption on vegetation systems which well enrich the findings in vegetation dynamics and thus may provide some new insights for vegetation protection.

Water Absorption Effect on the Propagation Velocity of Normal Waves in Composite Rebars

2019 ◽  
Vol 970 ◽  
pp. 202-209
Author(s):  
Olga V. Muravieva ◽  
Robert R. Khasanov ◽  
Viktor A. Strizhak ◽  
Sergey S. Mkrtchyan
Keyword(s):  
Water Absorption ◽  
Propagation Velocity ◽  
Mechanical Characteristics ◽  
Experimental Studies ◽  
Absorption Effect ◽  
Acoustic Waveguide ◽  
Torsional Waves ◽  
Water Absorption Effect ◽  
Waveguide Method ◽  
Physical And Mechanical Characteristics

The article proposes the use of the acoustic waveguide method with normal Pochhammer waves to estimate the water absorption of composite fiberglass rebars. The results of experimental studies on the water absorption and temperature influence on the propagation velocity of rod and torsional waves in composite rebars samples with different physical and mechanical characteristics are presented. The sensitivity of the wave velocity parameter to water absorption and temperature fluctuations is estimated. The proposed acoustic waveguide method is characterized by high accuracy, reliability and efficiency.

Water Absorption Effect on the Dynamic Properties of Nylon-6 by Dielectric Spectroscopy

2003 ◽  
Vol 36 (26) ◽  
pp. 9840-9850 ◽  
Author(s):  
E. Laredo ◽  
M. Grimau ◽  
F. Sánchez ◽  
A. Bello
Keyword(s):  
Water Absorption ◽  
Dielectric Spectroscopy ◽  
Dynamic Properties ◽  
Nylon 6 ◽  
Absorption Effect ◽  
Water Absorption Effect

Interlaminar fracture toughness of a hybrid composite material of the alor type

1994 ◽  
Vol 30 (2) ◽  
pp. 136-145 ◽  
Author(s):  
A. S. Grabil'nikov ◽  
G. P. Mashinskaya ◽  
G. F. Zhelezina ◽  
O. M. Zinevich ◽  
I. S. Deyev
Keyword(s):  
Fracture Toughness ◽  
Composite Material ◽  
Hybrid Composite ◽  
Interlaminar Fracture Toughness ◽  
Interlaminar Fracture ◽  
Hybrid Composite Material

scholarly journals Investigations on the Mechanical Properties of Glass Fiber/Sisal Fiber/Chitosan Reinforced Hybrid Polymer Sandwich Composite Scaffolds for Bone Fracture Fixation Applications

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1501 ◽  
Author(s):  
Soundhar Arumugam ◽  
Jayakrishna Kandasamy ◽  
Ain Umaira Md Shah ◽  
Mohamed Thariq Hameed Sultan ◽  
Syafiqah Nur Azrie Safri ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Glass Fiber ◽  
Bone Fracture ◽  
Hybrid Composite ◽  
Bone Structure ◽  
Hybrid Composites ◽  
Sisal Fiber ◽  
Composite Scaffolds ◽  
Study Results

This study aims to explore the mechanical properties of hybrid glass fiber (GF)/sisal fiber (SF)/chitosan (CTS) composite material for orthopedic long bone plate applications. The GF/SF/CTS hybrid composite possesses a unique sandwich structure and comprises GF/CTS/epoxy as the external layers and SF/CTS/epoxy as the inner layers. The composite plate resembles the human bone structure (spongy internal cancellous matrix and rigid external cortical). The mechanical properties of the prepared hybrid sandwich composites samples were evaluated using tensile, flexural, micro hardness, and compression tests. The scanning electron microscopic (SEM) images were studied to analyze the failure mechanism of these composite samples. Besides, contact angle (CA) and water absorption tests were conducted using the sessile drop method to examine the wettability properties of the SF/CTS/epoxy and GF/SF/CTS/epoxy composites. Additionally, the porosity of the GF/SF/CTS composite scaffold samples were determined by using the ethanol infiltration method. The mechanical test results show that the GF/SF/CTS hybrid composites exhibit the bending strength of 343 MPa, ultimate tensile strength of 146 MPa, and compressive strength of 380 MPa with higher Young’s modulus in the bending tests (21.56 GPa) compared to the tensile (6646 MPa) and compressive modulus (2046 MPa). Wettability study results reveal that the GF/SF/CTS composite scaffolds were hydrophobic (CA = 92.41° ± 1.71°) with less water absorption of 3.436% compared to the SF/CTS composites (6.953%). The SF/CTS composites show a hydrophilic character (CA = 54.28° ± 3.06°). The experimental tests prove that the GF/SF/CTS hybrid composite can be used for orthopedic bone fracture plate applications in future.

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