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Online since: August 2019
Authors: Marco Corradi, Romina Sisti, Antonio Borri, Alessio Molinari, Chiara Quintaliani
Test results show that the lateral load capacity of the panels is highly affected by construction defects.
These blocks were not used for construction of load-bearing walls, but it became soon evident that by reducing the voids volume and increasing the dimensions of the blocks, it was possible to develop a structural block, with positive characteristics in terms mechanical properties, and ease and reduced time of installation.
It was concluded by these studies that the action of the retrofitting fibers (glass, carbon, Kevlar or basalt) might have been a contributing factor for an increment of the masonry’s tensile strength.
The mechanical properties of the CFRP reinforcement are summarized in Table 1.
Mechanical properties of the CFRP reinforcement Dry fiber thickness (mm) 0.165 Fiber Orientation Unidirectional Fiber Density (kg/m2) 0.300 Matrix type Epoxy Number of tested samples 10 Mean tensile strength (MPa) 3324 CoV (tensile strength) (%) 18.1 Young’s Modulus (GPa) 312.2 CoV (Young’s modulus) (%) 19.2 CoV=Coefficient of Variation Figure 5.
Online since: October 2015
Authors: Shaharin Anwar Sulaiman, Girma T. Chala, Azuraien Japper-Jaafar, Wan Ahmad Kamil Wan Abdullah
Sulaiman1,b, Azuraien Japper-Jaafar1,c and Wan Ahmad Kamil Wan Abdullah2,d 1Department of Mechanical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia 2Department of Medical Physics and Radiography, Hospital Universiti Sains Malaysia, 16150 KubangKerian, Kelantan, Malaysia agirma_tade@yahoo.com, bshaharin@petronas.com.my, cazuraien_jappe@petronas.com.my, dwkamil@usm.my Keywords: Waxy crude oil, gas voids, cooling rates Abstract-When waxy crude oil becomes a gel, predicting a restart pressure in pipelines has been a challenge.
Misra et al.[1] identified factors affecting wax deposition in pipelines.
Norman et al. [7] highlighted the importance of analyzing the mechanical behavior of gelled crude oil prior to assessing the necessary pressure required for restarting the whole systems at offshore fields.
They stated that thermal shrinkage influenced the mechanical properties of gelled crude oil, which finally produces a reduced volume of the sample.
Brucy, "Waxy Crude Cold Start: Assessment Through Gel Structural Properties," presented at the SPE-49213, SPE Annual Technical Conference and Exhibition, New Orleans, Louisiana, 27-30 September, 1998
Online since: December 2014
Authors: Yan Chun Li, Yuan Yuan Xin
Many researchers have presented the mechanical properties of asphalt pavement on longitudinal slope.
Scholars also analyzed the mechanical response of asphalt pavement under moving load.
The slope of the flexure tensile strain is not affected, but in the common role of overloading the flexure tensile strain increased obviously.
Rutting Law and Its Influence Factors For asphalt Pavement in Long and Steep Longitudinal Slope Section, J.
Research on the Stress-strain Property of Asphalt Mixture Under Haversian Waveload, J.
Online since: December 2012
Authors: Xin Liu, Wei Fan
In the high temperature environment, this will lead to metal materials of all kinds of mechanical properties and its parameters change, at the same time cutting forming quality and tool wear with thermal stress changes.
Analysis does not consider heat convection, heat radiation and other affecting factors, that is to say will tool and chip contact as adiabatic process.
Thus it can be seen, the cutting edge area parameters affect processing temperature is a very big factor.
Tool design manual (Mechanical Industry Press, Beijing,1999)
Online since: September 2013
Authors: Jun Peng Gao, Yu Xi Jia, Ling Luo, Zhao Jing Wang, Xiao Xia Wang, Xiao Su Yi
This paper aims to analyze Polyurethane’s shape memory properties based on the viscoelastic theory.
As the results show, Polyurethane’s shape recovery ratios are almost 100%, whereas shape fixing properties are relatively poor.
Earlier focuses on shape memory polymers and their composites were the recovery strain, the recovery stress and their influencing factors during different kinds of shape memory processes[[] Y.P.
Mater. 33 (2001) 545-54. ], while there is a focus on recovery time and its influencing factors using experimental methods[4,[] R.
As the calculated results show, the model describes Polyurethane’s creep, relaxation and shape memory properties well.
Online since: May 2025
Authors: Hendery Dahlan, Meifal Rusli, Weriono Weriono, Eka Sahputra Roni
Changes in bone quality in idiopathic individuals can also alter the bone's mechanical properties and anatomical structure.
Spondylolisthesis, a chronic vertebral column instability form, ranks among the most prevalent conditions affecting the lower spine.
Moreover, factors like thread pitch, depth, and thread form also notably impact pullout resistance [13].
Furthermore, bone strength and bone mineral quality play a critical role in determining the strength of the pedicle screw-bone interface, consequently affecting the screw's movement toward the bone interface.
Wu, Biomechanical properties of novel transpedicular transdiscal screw fixation with interbody arthrodesis technique in lumbar spine, finite element study, Journal of Orthopaedic Translation 15, 50-58, (2018)
Online since: June 2022
Authors: Pham Son Minh, Nguyen Van Minh, Anh Son Tran
Surface roughness plays a role in many areas and is an important factor in the evaluation of machining accuracy.
ASTM D638 is prepared by applying a tensile force to a test piece and measuring its properties under stress.
ASTM D638 is used to measure many different tensile properties as well as 3D printing and design parameters, along with the 3D printer.
From the investigation, it was observed that the feed rate affected the fill process, thereby affecting tensile strength.
Fig. 3 Tensile of specimens A, B, C, D, E Fig. 4 Tensile strength of specimens F, G, H, I, J Conclusions This study investigated the effects of two SLS printing parameters on the tensile properties of 3D products: laser power and feed rate.
Online since: August 2013
Authors: Yu Feng Chen, Gang Yin
Relationship between Short Term Traffic Flow Chaos Fractal Properties and the Necessary Data for Prediction Gang Yin1, Yu Feng Chen2 1.
School of Measurement-Control and Mechanical-Electrical Engineering Inner Mongolia Vocational College of Chemical Engineering Hohhot, China 2.
The point given in TABLE I is required by nonlinear properties of traffic flow sequence, and it does not include the special case that special identification method requires more historical data.
Only considering the different speed of difference vehicles, when we observe the simple model of two factors of the time window T, we can explain the variation in minute scale D2 and λ1 which happened in traffic flow of point B.
Previous studies suggest that it would cause the disappearance of fractal nature; however, this study does not support this opinion; we propose a simplified model which can qualitatively explain some of the causes of the chaos in traffic flow characteristics, and the causes are that the speed difference is the main factor to affect the correlation dimension in minute scale observation window.
Online since: October 2015
Authors: Wen Yan Lin, Yong Sheng Huang, Xin Qiu, Yu Jie Wang, Jin Hong Wu
B.L.Chen[1] considered that it was worth to promote and apply the ionic soil stabilizer to the highway roadbed and pavement, because it had a good a very good improvement effect for the physical and mechanical properties of the soil.
Q.B.Liu[4] indicated that the ionic soil improved the expansion and physical and mechanical properties of expansive soil by reducing the shrinking properties and expansibility and increasing the shear behavior.
Jones and Eng[9] has studied a sulphonated oil additive in order to characterize its action effect with mechanical property index.
However, the curing mechanism and controlling factors of the ionic soil stabilizer are so complex that the treatment technology is far from mature, which involved regional geology, hydrology, climate condition and highway criterion.
Basic Properties of Materials Properties of Typical Soil.
Online since: May 2015
Authors: Djamil Benghida
The intergovernmental concerns never took into consideration both the sustainability factor and the cultural one, not until the 1990s when research on climate change expanded and the sustainable development took an important place in the different academic cross fields: engineering, biology, technology and architecture.
Educate architects to this vernacular product, involving civil engineers to improve the mechanical properties of the adobe using natural materials and finally create and international research and training centers for the know-how.
Microstructure and transport properties of porous building materials.
II: Factors Affecting the Durability of Adobe Structures, Studies in Conservation, Maney Publishing. 24, No. 1 : 23-39. (1979)
I: The Properties of Adobe, Studies in Conservation, Maney Publishing. 23, No. 4: 139-146, (1978)
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