Results 31 to 40 of about 97,848 (165)

Matrix algebras with a certain compression property I [PDF]

Linear Algebra and its Applications, 2021
An algebra $\mathcal{A}$ of $n\times n$ complex matrices is said to be \textit{idempotent compressible} if $E\mathcal{A}E$ is an algebra for all idempotents $E\in\mathbb{M}_n(\mathbb{C})$. Analogously, $\mathcal{A}$ is said to be \textit{projection compressible} if $P\mathcal{A}P$ is an algebra for all orthogonal projections $P$ in $\mathbb{M}_n ...
Zachary Cramer, Laurent W. Marcoux, Heydar Radjavi   +2 more
openaire   +4 more sources

Preparation and Evaluation of Microstructure, Compressive and Tensile Strength of Vinyl Ester/Glass Micro Balloon Foams [PDF]

Journal of Advanced Materials in Engineering
Syntactic foams consisting of vinyl ester resin hollow glass microspheres (microballoons) are used in many marine or air structures due to their low density, high stiffness/density ratio, and ability to absorb energy.
M.R. Loghman, M. Najafpour, A.R. Nasr Esfahani, H. Sheikh, M. Sadeghi, E. Mohammad Sharifi   +5 more
doaj   +1 more source

2D and 3D finite element comparative analysis of compressive properties of porous titanium

Fenmo yejin jishu
In order to investigate the effect of pore structure on the compression properties of porous titanium, the compression process of porous titanium was simulated by finite element method.
LI Yuhua, HE Yuxin, ZHANG Qian, ZHAO Rong, WANG Haojie, CHU Jinghui, NIU Libin   +6 more
doaj   +1 more source

Preparation and compressive properties of Ti alloy fiber porous materials

Fenmo yejin jishu, 2023
To reduce the cost of Ti and Ti alloy products, the Ti chips (cutting fibers) from the surface of Ti ingots were used as the raw materials to prepare the Ti alloy fiber porous materials by cleaning, cutting, pressing, and high temperature confined ...
WANG Jianzhong, AO Qingbo, MA Jun, LI Aijun   +3 more
doaj   +1 more source

Influence of Al and Ti Alloying and Annealing on the Microstructure and Compressive Properties of Cr-Fe-Ni Multi-Principal Element Alloy

Metals
This study meticulously examines the influence of aluminum (Al) and titanium (Ti) on the genesis of self-generated ordered phases in high-entropy alloys (HEAs), a class of materials that has garnered considerable attention due to their exceptional ...
Keyan An, Tailin Yang, Junjie Feng, Honglian Deng, Xiang Zhang, Zeyu Zhao, Qingkun Meng, Jiqiu Qi, Fuxiang Wei, Yanwei Sui   +9 more
doaj   +1 more source

Fabrication of Mechanically Robust Water-Soluble Core Molds and Experimental Validation to Manufacture a Composite Part

Applied Sciences
In this work, a core mold which combines excellent high-temperature compressive properties and rapid water solubility was successfully fabricated by using polyvinyl alcohol (PVA) as the adhesive and quartz sands as reinforcing particles. The influence of
Tianbo Yang, Lei Tan, Yuntao Fu, Ziwen Sun, Yang Chen, Wei Luo, Shengtai Zhou, Mei Liang, Huawei Zou   +8 more
doaj   +1 more source

Damping and Compressive Properties of SLM-Fabricated Rhombic Dodecahedron-Structured Ni–Ti Shape Memory Alloy Foams

Metals
Ni–Ti shape memory alloy (SMA) foams, capable of bringing revolutionary changes to crucial fields such as aerospace, energy engineering, and biomedical applications, are at the forefront of materials science research.
Di Guo, Qingzhou Wang, Li Liu, Shuo Liu, Hao Cao, Jingxia Xie, Fuxing Yin   +6 more
doaj   +1 more source

Compression Properties of Square Braided Fabric-Recovery properties after flat compression-

Sen'i Gakkaishi, 2004
In this study, recovery properties of square braided fabric after flat compression were focused. The observation of the cross section with optical microscopy was performed and the mechanism of recovery deformation was clarified. Inside structure of braided fabric and recovery properties were extremely changed at first compression and then tended to ...
Ueda, Takahisa, Ohtani, Akio, Akutsu, Kimihiko, Nakai, Asami, Hamada, Hiroyuki   +4 more
openaire   +2 more sources

Properties of the superconducting state in compressed sulphur [PDF]

Phase Transitions, 2012
The thermodynamic properties of the superconducting state in Sulphur under the pressure at 160 GPa were determined. It has been shown that: (i) the critical value of the Coulomb pseudopotential is equal to 0.127; (ii) the critical temperature (T_{C} =17 K) should be calculated by using the modified Allen-Dynes formula; (iii) the effective electron ...
Durajski, A. P., Szczęśniak, R., Jarosik, M. W.   +2 more
openaire   +2 more sources

Mechanical Properties of Compressed Wood with Various Compression Ratios

Wood Research Journal, 2021
This paper investigates five groups of compressed wood (CF), four of them made from compressed Japanese cedar with four different compression ratios (CR) of 33%, 50%, 67% and 70% and one without compression (control). The specimens were conditioned in relative humidity (RH) of 60% with moisture content (MC) of 12%.
Buan Anshari, Akihisa Kitamori, Kiho Jung, Kohei Komatsu, Zhongwei Guan   +4 more
openaire   +1 more source