Effect of Water Regime on Aggregate-tensile Strength, Rupture Energy, and Friability

2002 ◽  
Vol 66 (3) ◽  
pp. 702 ◽  
Author(s):  
Lars J. Munkholm ◽  
Bev D. Kay
Keyword(s):  
Tensile Strength ◽  
Water Regime ◽  
Effect Of Water ◽  
Rupture Energy

Effect of water regime and harvest stage on essential oil accumulation in basil plant growing in sandy soil

2021 ◽  
Author(s):  
João V. R. S. Souza ◽  
Lin Chau Ming ◽  
Marcos A. L. Santos ◽  
James E. Simon ◽  
Hector R. Juliani ◽  
...  
Keyword(s):  
Essential Oil ◽  
Sandy Soil ◽  
Water Regime ◽  
Oil Accumulation ◽  
Effect Of Water

Effect of Water Absorption Behaviour on Tensile Properties of Hybrid Jute-Roselle Woven Fibre Reinforced Polyester Composites

2021 ◽  
Vol 18 (4) ◽  
Author(s):  
Agung Efriyo Hadi ◽  
Tezara Cionita ◽  
Deni Fajar Fitriyana ◽  
Januar Parlaungan Siregar ◽  
Ahmed Nurye Oumer ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Water Absorption ◽  
Fibre Composite ◽  
Unsaturated Polyester ◽  
Water Immersion ◽  
Tensile Modulus ◽  
Natural Fibre ◽  
Jute Fibre ◽  
Thickness Swelling ◽  
Effect Of Water

Incorporating natural fibre as reinforcement in the polymer matrix has shown a negative effect since the natural fibre is hydrophilic. The natural fibre easily absorbs water which causes an effect on the mechanical properties of the composites. The objective of this paper is to investigate the water absorption behaviour of hybrid jute-roselle woven fibre reinforced unsaturated polyester composite and the effect of water absorption in terms of tensile strength and tensile modulus. The effect of hybrid composite on the thickness swelling will be tested. The fabrication method used in this study is the hand lay-up technique to fabricate 2-layer and 3-layer composites with layering sequences of woven jute (J)/roselle (Ro) fibre. The results of the study showed that pure roselle fibres for 2 and 3-layer composites have the highest water absorption behaviour 3.86% and 5.51%, respectively, in 28 days) as well as thickness swelling effect, whereas hybrid J-Ro and J-J-Ro composites showed the least water absorption (2.65% and 3.76%, respectively) in 28 days) in both the tests. The hybridisation between jute and roselle fibres reduced water absorption behaviour and improved the fibres dimensional stability. The entire composites showed a decreasing trend for both tensile strength and tensile modulus strength after five weeks of water immersion. Jute fibre composite hybridised with roselle fibre can be used to reduce the total reduction of both tensile strength and tensile modulus throughout the whole immersion period. Moreover, the tensile testing showed that jute fibre composite hybridised with roselle fibre have produced the strongest composite with the highest tensile and modulus strength compared to other types of composites. The hybridisation of diverse fibre reinforcements aids in minimising the composite water absorption and thickness swelling, hence reducing the effect of tensile characteristics.

Effect of Water Absorption on Strength of the Aeronautical Composite Material Fiberdux HTA/6376

2009 ◽  
Vol 417-418 ◽  
pp. 457-460 ◽  
Author(s):  
S.G. Pantelakis ◽  
C.V. Katsiropoulos ◽  
K.I. Tserpes ◽  
Therese Felgeyrolles
Keyword(s):  
Tensile Strength ◽  
Composite Material ◽  
Fatigue Life ◽  
Water Absorption ◽  
Damage Model ◽  
Fatigue Tests ◽  
Progressive Damage ◽  
Saturation Point ◽  
Effect Of Water ◽  
Progressive Damage Model

The effect of water absorption on tensile strength and fatigue life of the Fiberdux HTA/6376 composite laminated material was experimentally and numerically investigated. For the investigation, a quasi-isotropic and a cross-ply layup were considered. Tensile and fatigue tests were carried out with dry and wet specimens subjected to water absorption up to the water uptake saturation point. Fractographic analyses of fracture surfaces were conducted to detect the type of accumulated damage. To describe the mechanical behavior of the material a FE-based progressive damage model was developed. Material properties used in the model are those of the saturated material evaluated experimentally. Convergent results reveal an appreciable degradation in the ultimate tensile strength and fatigue life of the composite material owing to water absorption.

scholarly journals Effect of water regime on seed germination and vigor of five sorghum (Sorghum bicolor (L.) Moench) genotypes growing in the field

2017 ◽  
Vol 20 (3) ◽  
pp. 45-48 ◽  
Author(s):  
Abderhim A. Jabereldar ◽  
Awad A. Abdalla ◽  
Salah Eldeen E. Ahmed ◽  
Mohammed Alhadi Ebrahiem
Keyword(s):  
Seed Germination ◽  
Sorghum Bicolor ◽  
Water Regime ◽  
Effect Of Water ◽  
Sorghum Bicolor L
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