Results 31 to 40 of about 595,772 (196)

Engineering characteristics of Egyptian limestone [PDF]

open access: yes, 2019
Purpose. Study of physical properties such as porosity, density and mechanical properties such as compressive strength and tensile strength of Egyptian limestone based on experimental investigations. Methods.
Haitham, M. Ahmed, Mahrous, A.M. Ali
core   +1 more source

Properties of naphthenic oil-plasticized natural rubber/silica composites prepared by wet mixing technology

open access: yesHecheng xiangjiao gongye, 2023
The preferred emulsifier was used to emulsify the plasticizer naphthenic oil (NAP), and uniform and stable NAP emulsion was prepared. The NAP-plasticized natural rubber (NR)/silica (SiO2) (NAP/NR/SiO2) composite was prepared using the resulting NAP ...
"CUI Kai-wen1, ZHANG Jun-yi1, JIANG Sheng-nan1, XUAN Lu-jia1, LU Na1, GUI Hong-xing2, WANG Hong-zhen1,2"
doaj   +1 more source

Thermomechanical property of rice kernels studied by DMA [PDF]

open access: yes, 2009
The thermomechanical property of the rice kernels was investigated using a dynamic mechanical analyzer (DMA). The length change of rice kernels with a loaded constant force along the major axis direction was detected during temperature scanning.
Bhandari, Bhesh   +6 more
core   +1 more source

Research on damage viscoelastic dynamic constitutive model of granite

open access: yes矿业科学学报, 2019
Dynamic mechanical properties of granite were tested by a split Hopkinson pressure bar system with constant strain rate.The initial loading stage of stress-strain curve of granite is linear elasticity, and the rock material has a significant plastic ...
Ling Tianlong   +3 more
doaj   +1 more source

Experimental research on dynamic mechanics of early age concrete

open access: yes矿业科学学报, 2020
The single and double impact experiments were carried out on C20 and C40 concrete at five different ages using a 75 mm SHPB experimental device.The mechanical properties of early age concrete under impact loading were systematically studied from two ...
Li Shenglin   +3 more
doaj   +1 more source

Emergence of the second law out of reversible dynamics [PDF]

open access: yes, 2009
If one demystifies entropy the second law of thermodynamics comes out as an emergent property entirely based on the simple dynamic mechanical laws that govern the motion and energies of system parts on a micro-scale.
Koning, W.L., de   +1 more
core   +2 more sources

Novel hybrid flax reinforced supersap composites in automotive applications [PDF]

open access: yes, 2015
Flax fibre bio-epoxy composites have not found many commercial uses in structural applications on account of their lack of cost efficiency and high susceptibility to environmental changes. Non-woven flax mats were subjected to alkali, acetylation, silane
Abhyankar, Hrushikesh   +5 more
core   +2 more sources

Effects of continuous extrusion speed on microstructure and mechanical properties of Al-4.8Cu-0.45Mn-0.19Cd-0.18Ti-0.17Zr-0.14V alloy wires

open access: yesJournal of Materials Research and Technology
This study investigated the influence of continuous extrusion speed on the microstructure and mechanical properties of Al-4.8Cu-0.45Mn-0.19Cd-0.18Ti-0.17Zr-0.14V alloy wires.
Gaosong Wang   +5 more
doaj   +1 more source

Exploring nanocrystalline cellulose as a green alternative of carbon black in natural rubber/butadiene rubber/styrene-butadiene rubber blends

open access: yeseXPRESS Polymer Letters, 2014
A series of nanocrystalline cellulose (NCC) reinforced natural rubber/butadiene rubber/styrene-butadiene rubber (NR/BR/SBR) blends were prepared via mastication of NR/NCC, BR/SBR and other ingredients.
W. J. Chen, J. Gu, S. H. Xu
doaj   +1 more source

A fabrication history based strain-fatigue model for prediction of crack initiation in a radial loading wheel [PDF]

open access: yes, 2017
A strain-based fatigue model concerning fabrication history is applied to predict the fatigue life of a commercial car wheel under radial loads. As the prior conditions, the strain fatigue testing is performed on standard specimen of DP590 and FB540 ...
Gu, H.R   +7 more
core   +1 more source

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