Results 31 to 40 of about 52,911 (159)

A New Correlation for Estimating Static Elastic Properties of Sandstone Formations: Case Study from Rumaila Oilfield

Iraqi Geological Journal
Evaluating the elastic characteristics of reservoir's rocks is crucial for the oil and gas sector to reduce risks throughout drilling and production operations. Elastic parameters are essential for prediction of wellbore stability, estimation of
Doaa Mahdi, Ayad Alrazzaq
doaj   +1 more source

Eccentric Exercise Reduces Upper Trapezius Muscle Stiffness Assessed by Shear Wave Elastography and Myotonometry

Frontiers in Bioengineering and Biotechnology, 2020
In this study, we tested the hypotheses that unaccustomed eccentric exercise (ECC) would reduce the elastic modulus and dynamic stiffness of the upper trapezius muscle and that these changes would correlate with increases in muscle thickness, reflecting ...
Aleksandra Kisilewicz, Pascal Madeleine, Zofia Ignasiak, Bogdan Ciszek, Adam Kawczynski, Ryan Godsk Larsen   +5 more
doaj   +1 more source

Estimation of the static modulus of elasticity of wood from the dynamic modulus of elasticity

Forest Systems
Aim of study: Analyze the behavior and predictive capacity of different non-destructive testing (NDT) methods—ultrasound, longitudinal and transverse vibrations, and static bending— for estimating the MOEGTO in two species of great forestry interest in Europe: Pinus sylvestris and Populus × euramericana.
Xuxan Rosas-Ramos, Luis Acuña-Rello, Milagros Casado-Sanz, Roberto Martínez-López, Amparo Borja-De la Rosa, Liliana Cuapio-Hernández, Roberto Machuca-Velasco   +6 more
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Effect of nano-SiO2 and nano-CaCO3 on the static and dynamic properties of concrete

Scientific Reports, 2022
Three kinds of nano-concrete, i.e., 2.0% nano-SiO2 doped, 2.0% nano-CaCO3 doped and 1.0% nano-SiO2-1.0% nano-CaCO3 co-doped concretes (NS, NC, NSC) were prepared for a study on static property and dynamic property under different strain rates (50–130 s−1)
Zhi-hang Wang, Er-lei Bai, Jin-yu Xu, Yu-hang Du, Jing-sai Zhu   +4 more
doaj   +1 more source

A dynamic damage constitutive model considering the effect of joint inclination on the modulus of elasticity of slates

Scientific Reports
The dynamic damage constitutive model has limitations and needs to reflect the quantitative relationship between the elastic modulus and joint inclination angle of the slate.
Tingting Gu, Tiejun Tao, Xingchao Tian, Caijin Xie, Qin Wang, Jian Jia   +5 more
doaj   +1 more source

Dynamic Characteristics of Lightweight Aggregate Self-Compacting Concrete by Impact Resonance Method

Advances in Civil Engineering, 2021
Understanding the dynamic behavior of Lightweight Aggregate Self-Compacting Concrete (LWASCC) is of importance to the safety of concrete structures serving in dynamic loading conditions.
Ning Li, Sisi Zhang, Guangcheng Long, Zuquan Jin, Yong Yu, Xiaoying Zhang, Chuansheng Xiong, He Li   +7 more
doaj   +1 more source

Dynamic properties and microstructural mechanisms of nanoclay-modified cement-stabilized soil

Journal of Applied Science and Engineering
To address serviceability issues of railway subgrades in Central China subjected to dynamic loading, this study investigated the dynamic behavior and microstructural mechanisms of nanoclay-modified, cement-stabilized silty clay.
Xinshan Zhuang, Yuhan Hao, Duan Yang, Zhuona Chen   +3 more
doaj   +1 more source

Investigation of the Dynamic Characterization of Traditional and Modern Building Materials Using an Impact Excitation Test

Buildings
This study presents a comprehensive non-destructive evaluation of a broad range of construction materials using the impulse excitation of vibration (IEV) technique.
Anil Ozdemir
doaj   +1 more source

KONVERSI KONSTANTA ELASTIK DINAMIK KE STATIK PADA POROSITAS HIDROKARBON BATUPASIR (SANDSTONE)

Rekayasa, 2010
Pengukuran dinamik untuk mendapatkan konstanta elastik dihubungkan dengan besaran petrofisika utamanya porositas sangat penting untuk penerapan penyebaran adanya reservoar. Sedangkan pengukuran statik biasanya dilakukan juga di dunia minyak bumi dan gas (
Mochammad Ahied
doaj   +1 more source

Relation Between Static and Dynamic Modulus of Elasticity of Wood

Acta Silvatica et Lignaria Hungarica, 2005
Static and dynamic modulus of elasticity (MOE) of spruce lumber were determined under different conditions like cross head speed, bending and longitudinal vibration, and mode numbers. The characteristic time of MOE determination is introduced. Characteristic time is defined as the typical MOE determination time.
Ferenc Divós, Toshinari Tanaka
openaire   +1 more source