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Study on the Correlation between Mechanical Characteristics and Non-destructive Testing of Stress Wave in Larch Logs Juying Luo and Xuechun Yang* Key Laboratory of Forest Sustainable Management and Environmental Microorganism Engineering of Heilongjiang Province, Northeast Forestry University, Harbin, China * Corresponding author: xuechunyang2005@yahoo.com.cn Keywords: larch; logs; mechanical characteristics; stress wave; non-destructive testing Abstract.
They also have the characteristics of medium hard, strong material, a little rough structure, straight grain, big compression and bending strength and anti-corrosive.
Materials and Methods Materials. 18 larch log samplings with 1m length are all from Xianfeng Forest Farm in Fangzheng Forestry Bureau in Heilongjiang Province.
The lumber is the typical anisotropic material.
Wood compression strength is the maximum pressure loads along the wood grain, which is one of the important mechanical properties as the structure and building materials.

Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, P.
China 2 Department of Infrastructures, Central Queensland University, PO Box 1319, Gladstone, Qld 4680, Australia 3 School of Mechanical Engineering, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia 2a k.duan@cqu.edu.au Keywords: Al2O3/Ti(C,N), pressureless sintering, densification, density, mechanical properties, hardness, strength, fracture toughness.
Material Processing and Experiments High purity Al2O3 powder with grain size of 0.2 µm and titanium carbonitride (TiC0.5N0.5) powder with size of 0.1 µm were used as starting materials.
While the Al2O3 powder was commercially sourced from Guangda Ceramics Co., China, the titanium carbonitride powder was processed using titanium hydride (TiH2) (Fushun Aluminum, China) and starch (Shenyang Chemical, China) as staring materials.
Experiments revealed that among the atmospheres of vacuum, Ar, H2 and N2, the best material properties were achieved in Ar atmosphere.

From the engineering point of view, the main features of a hydraulic cylinder tube are high tensile properties (in both longitudinal and transverse directions), high fatigue resistance and good toughness.
The transition curves in the temperature range - 60 °C to 40 °C, together with the Fracture Appearance Transition Temperature (50% FATT), were determined on the most promising materials.
The materials were available as pipes of wall thickness (WT) in the range from 13.5 mm to 17 mm.
The microstructures clearly show the presence of coarse ferrite grains (size > 10 µm), which were already present in the normalized and as-rolled materials.
The high work-hardening rate of these materials is confirmed by the values of the work-hardening coefficient (n = 0.17) measured in the range 3%uniform strain.

Vibration control and damping of ropes and cables has received considerable attention in the context of civil engineering applications, mainly in cable structures such as suspended bridges and cable-stayed bridges.
However, the latest developments in the application of smart materials and the implementation of adaptive structures in controlling the dynamic response represent an attractive alternative to this approach.
SMA wires or strips can be used, possibly in conjunction with other smart materials and boundary control methods.
Ostachowicz: Key Eng.
Materials Vol. 167-168 (1999), p. 281 [13] S.

Mastropietro1, a, Enrico Drioli1,2,b and Teresa Poerio2,c * 1Department of Environment and Territory and Chemical Engineering, University of Calabria Rende, Italy 2National Research Council, Institute for Membrane Technology (ITM–CNR) c/o University of Calabria, Rende, Italy ateresafina.mastropietro@gmail.com, be.drioli@unical.it, ct.poerio@itm.cnr.itl Keywords: Nanozeolites, Faujasite, Membranes.
The synthesis of zeolites with particle size in the nanometer range has attracted increasing attention in recent years, owing to the potential application of these materials in many traditional and emerging fields.[1-3] Dramatic changes in term of properties and performances are expected to occur in nanozeolites with respect to conventional zeolite materials, as a result of the scaling down of the particles size.
This feature is particularly advantageous for many traditional applications of zeolites, like catalysis and adsorption.[5, 6] In addition, the assembling of nanozeolites into hierarchically structured materials and thin films further extend the already huge flexibility of these materials, opening the route to novel applications, including reactive membranes, selective chemical sensors and nano-devices for opto-electronic and biomedical technologies.[7-14] At present, different strategies are available for preparing nanozeolites, each having its own merits and shortcomings.
Relative crystalline yield with respect to the starting amount of SiO2 Support Synthesis gel composition Relative crystalline yield A i) 42% B i) 47% C i) 51% C ii) 45% Considering the synthesis gel composition i), a marked increase of the reaction yield is observed when moving from A to C, indicating that a higher degree of conversion of the starting gel system into a crystalline material can be achieved by increasing the amount of seeds layered on the support.
The use of supported seeds combined to the suitable composition of the starting gel system have been the key-factors for reaching a higher degree of conversion of the starting gel system into a NAY nanocrystalline phase at lower crystallization temperature.

Effect of Different Factors on the Fibrillation Degree of Lyocell Fiber Based on Homogenization Treatment Qiao Li1, a, Chen Jiang1, b, Gesheng Yang1, c, Huihui Zhang1,2*,d, Minmin Yu1, e, Huili Shao1, f 1State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China 2Key Lab of Eco-Textile, Ministry of Education, Donghua University, Shanghai 201620, China a1355590184@qq.com, b423755742@qq.com, cgsyang@dhu.edu.cn, dhhzhang@dhu.edu.cn, e782603376@qq.com, fhlshao@dhu.edu.cn Keywords: Fibrillation, Homogenization, Lyocell fiber, Orthogonal experiment.
Materials and Experimental Materials.
Physical and mechanical properties of polyvinyl alcohol and polypropylene composite materials reinforced with fibril aggregates isolated from regenerated cellulose fibers.

Lee2,c 1State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China 2Department of Materials Engineering, Sun Moon University, Korea abyxjtu@gmail.com, byang155@mail.xjtu.edu.cn, csoowlee54@hotmail.com Keywords: Orthogonal experiment; Spray drying; Feedstock; Coating Abstract.
The latter one has numerous advantages, and some of them are to present spherical morphologies and homogeneous composition of different materials, which are regarded as ideal method not only for APS but also for sintering of ceramic [4, 5].
Spray drying is one process by which a water-based suspension (slurry) is transformed into a dry granule (feedstock) by spraying the fluid feed material into a stream of heated air.
Experimental Materials and Slurry preparation The commercial α-Al2O3 powder with average grain size 100-150nm (SUMITOMO CHEMICAL CO., LTD.

Li1, b 1Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education); School of Mechanical Engineering, Shandong University, Jinan 250061, P.R.
In the past, some empirical models, which could predict surface roughness in terms of various process parameters for turning and milling different materials, were developed [2, 3].
However, titanium alloys are known as difficult-to-machine materials.
An annealed Ti-6Al-4V alloy was selected as the workpiece material, and its normal chemical compositions and normal material properties at room temperature are provided in Tables 3 and 4, respectively.
Acknowledgements This research is based upon work supported by the National Key Science & Technology Specific Projects (2009ZX04001-032), Specialized Research Fund for the Doctoral Program of Higher Education (20070422033), and Taishan Scholar Program Foundation of Shandong.

Several different kinds of materials, such as Pt, carbon and conducting polymer, have been used to fabricate counter electrodes in DSCs.
From this point, the applications of low-cost materials should be important.
In the future, large solar conversion systems producing electric power on the terawatt scale will prefer materials that are abundantly available.
It was found that the photovoltaic performance was strongly affected by the specific surface areas of the carbon materials [29].
Acknowledgment This work was financially supported by the National Basic Research Program of China under Grant No. 2006CB202600, the National High Technology Research and Development Program of China under Grant No. 2009AA050603, the Funds of the Chinese Academy of Sciences for Key Topics in Innovation Engineering under Grant No.

To create these biphasic systems, it is essential that the two materials are mutually immiscible, meaning they must exhibit thermodynamically driven segregation during the deposition process.
The search for novel, superhard materials. 
Chemical Engineering Journal. 313 (2017) 157-170
Key Engineering Materials. 614 (2014) 206-211
Materials Letters. 227 (2018) 145-148