Search results

Many objects made of these materials are controlled by the AE method.
Conclusion Experiments with static loading of samples with growing cracks were carried out on enough similar materials.
Builo, On the information value of the method of invariants of acoustic-emission signals in the diagnostics of pre-failure state in materials, J.
Materials Science and Engineering 44 (1980) 267-277
Yuyama, Damage assessment of reinforced concrete beams qualified by acoustic emission, ACI Structural Journal 99(4) (2002) 411-417

Acknowledgement Express my highest appreciation to School of Materials and Mineral Resources Engineering, USM for providing safe and well-equipped environment to perform lab work and guidance from the research team of Prof.
Ahmad, “Why Silver and PMMA are commonly used materials in plasmonic?
,” 2019. https://www.researchgate.net/post/Why-Silver-and-PMMA-are-commonly-used-materials-in-plasmonics/5d1e027d3d48b730cf45e24c/citation/download (accessed Jul. 07, 2021)
Lockman, “Methylene blue dye removal on silver nanoparticles reduced by Kyllinga brevifolia,” Environmental Science and Pollution Research, vol. 26, no. 11, pp. 11482–11495, Apr. 2019, doi: 10.1007/s11356-019-04583-7
Grassian, “Agglomeration, isolation and dissolution of commercially manufactured silver nanoparticles in aqueous environments,” Journal of Nanoparticle Research, vol. 12, no. 5, pp. 1945–1958, Jun. 2010, doi: 10.1007/s11051-009-9783-y

Status, Problems and Countermeasures of Mine Shaft Wall Rupture Mechanism Laiwang Jing1, a , Junwei Zhou 2, b, Liping Ye3, c, Kexiu Zhao 4, d, Xuegui Xue5, f , Pengwei Hao 6, g 1Mechanics Department, Anhui University of Science and Technology, Huainan 232001, China 2Mechanics Department, Anhui University of Science and Technology, Huainan 232001, China 3 Mathematics Department, Anhui University of Science and Technology, Huainan 232001, China 4Mathematics Department, Anhui University of Science and Technology, Huainan 232001, China 5Mechanics Department, Anhui University of Science and Technology, Huainan 232001, China 6Mechanics Department, Anhui University of Science and Technology, Huainan 232001, China alxybg@aust.edu.cn, b pwhao@aust.edu.cn, cylp063@126.com, d717138223@qq.com, f365214952@qq.com,g57066490@qq.com Key words: Shaft wall rupture, Status, Problems, Countermeasures.
Shandong University (Engineering Science), 2003, 33 (4): 461-466
Coal Science, 2002, 27 (1) :42-44
Journal of Engineering Geology. 2005,12 (z1): 529-532
Coal Science 2010 ,02

The micro actuator consists of a small cylinder made of plastic material, with dimension of 1.5 mm diameter and 10 mm long.
The EPDM rubber sheeting was found to be the most suitable material.
J., “Advances in an electrorheological fluid based tactile display”, Displays 18, pp.135-141, Elsevier Science, 1998
S., “Human psychophysics for teleaction system design”, Haptic-e: The Electronic Journal of Haptics Research, 2000
et al, ”Materials and mechanisms in electrorheology”, presented at the symposium on ‘Rheology of concentrated dispersion’, Third Chemical Congress of North America, Toronto, 6-14, 1989

The polymer is thus highly non-uniformly distributed in the hardened material.
- is flocculation and film formation localized in some favorable sites like aggregate surfaces, or is the polymer uniformly distributed in the material?
ACI Materials Journal, (1987) 511-518
Materials and Structures. 38 (2005) 601-607
Jin, An investigation on the microstructure formation of polymer modified mortars in the presence of polyacrylate latex, in: Proceedings of International RILEM Conference on Advances in Construction Materials Through Science and Engineering, Eds.

A.1,c 1 Construction and Building Department; College of Engineering & Technology; Arab Academy for Science, Technology & Maritime Transport; Cairo, Egypt. 2 Civil Engineering Department; Military Technical College, Cairo, Egypt.
Both steel and concrete are defined as elasto-plastic materials.
Since concrete is a composite material made primarily with aggregate, cement and water, its properties vary according to the mix proportion.
This phenomenon had been considered when developing the numerical model, randomly some concrete elements were chosen and their materials properties had been changed to be stronger or weaker than the others.
Journal of Structural Engineering, ASCE, Vol. 112, No. 3, pp. 573-587

A common solution to inhibit nitrogen release is to coat the fertilizer with hydrophobic materials to limit the solubility of fertilizer granules when spread on the soil, which is often called Controlled-Release Fertilizer (CRF).
Material and Methods Materials.
Fertilization was only done once on the third day after relocation, and the subject materials did not get additional nutrition.
Thanh, “Review on materials & methods to produce controlled release coated urea fertilizer,” J.
Spinger Science+Business Media, B.V., 1985

Effect of Nitrogen on Microstructure and Properties of a Cast Cobalt-Base Superalloy Chao YUANa, Jianting GUOb, Lanzhang ZHOUc Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, P.
Introduction Nitrogen (N)，as a detrimental element in superalloys， is not easily removed even during vacuum induction melting (VIM), and usually is controlled by selecting raw materials for minimizing the N level [1].
For getting the virgin alloy with low N, the purified raw materials were melted at a temperature of 15800C for 10min, and then cast into metal moulds in a vacuum of 1.2 Pa to get the virgin alloy bar stock with the weight of 18kg.
Tensile tests with a strain rate of 2×10-5 s-1 were conducted on an AG-5000A Tensile Machine at room temperature and on a DCX-25T Material Testing Machine at 9000C, respectively.
Technol., Vol. 18 (2002), p.1041 [10] Yuan Chao, Guo Jianting, Zang Zhixin, Lai Wanhui, Liu Yiming, and Li Hongliang, The Chinese Journal Nonferrous Metals Vol. 16 (2006), p.453 [11] A.M.Beltran, in: Superalloys II, edtied by C.T.Sims, et al, John Wiley and Sons, New York (1987), p.135 [12] F.M.Yang, X.F.Sun, H.R.Guan, and Z.Q.Hu: Mater.

Ultrasonic wave propagation is an ideal interrogation method because ultrasound is the elastic vibration of the material itself and is thus directly affected by any structural damage occurring in the paths of the propagating waves.
EXPERIMENTAL 3.1 System overview and pitch-catch method set-up The specimen used in this experiment was made of Fiberglass pre-impregnated material containing 30 plies and having an overall thickness of 8.39mm (Figure 2).
CONCLUSION AND FUTURE WORK In this paper, we have presented support vector machine approach for the automatic analysis of internal defects of composite materials.
E., “Acoustic-ultrasonics to assess material and structural proper- ties," tech. rep., NASA/CR-2002-211881, 2002, [4] Kwon, O.
[12] Chih-Wei Hsu, Chih-Chung Chang, Chih-Jen Lin, A Practical Guide to Support Vector Classification, Technical Report, Department of Computer Science, National Taiwan University, 2008

The collision-prevention device named steel tubular truss in the thesis is made of angle steel and circular steel tube, which buffers taking advantage of the buckling deformation from angle steel and the bending deformation from circular steel tube.But actually,there are so many uncertain factors that make it difficult to analyse exactly when he ship impacts the steel tubular truss, such as the tonnage of ship, the shape of stem, the speed of collision, the location of collision, the angle of collision, the fluctuation of water level, the material of steel tubular truss and the differences of structural form and so on.
However,The Finite Element method is all admitted the most effective method at present,which can consider the big deformation , the touch , the nonlinear of material and avulsion，which can exactly calculate the relationship of deformation and coupling force in structure.
The body of ship will use the rigid material and the parameters are shown in table 2.The kinematic plastic material[4]-[5]related with strain rate applied for the Collision-Prevention Device is shown in table 3.
Journal of Ship Reaearch[J],1959,3(2):1-4 [2] Paik J.K,Petersen P.T.Modelling of the Internal Mechanics in Ship Collisions, Ocean Engineering,1996,23(2):107-142
LS-DYNA3D Theory Foundation and Examples[M].Beijing:Science Press.2005.5 [6] L.Luo.Ship-bridge Collision Theories and Analysis on Anti-collision Equipment of Lie-de Bridge[D].Changsha: Changsha University of Technology,2008.