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The present and future activities concern the introduction of diffused and concentrated material nonlinearities in the solid, like e.g. fracture and plasticity.
ACKNOWLEDGMENTS FINANCIAL SUPPORT TO THE PRESENT RESEARCH ACTIVITY HAS BEEN PROVIDED BY MIUR THROUGH PRIN09 PROJECT MULTI-SCALE MODELLING OF MATERIALS AND STRUCTURES (GRANT #2009XWLFKW).
Chatterjee, An Introduction to the proper orthogonal decomposition, Current Science, 78 (2000) 808-817
Kappagantu, On the physical interpretation of the proper orthogonal modes in vibrations, Journal of Sound and Vibration, 211 (1998) 607-616
Brand, Incremental Singular Value Decomposition of Uncertain Data with Missing Value, Lecture Notes in Computer Science, 2350 (2002) 707–720.

The utilization of nanoparticle filled composite materials in many different engineering fields has undergone a tremendous increase.
In some situations, these materials may experience serious damage during the drilling of the nanoparticle-reinforced polymer (NRP) composite materials, such as fiber pullout, matrix delamination, and cracking.
The use of nanoparticulate composite materials has experienced an enormous increase in many different engineering fields as mentioned earlier.
Series: Materials Science and Engineering 310 (2018) 012158 [3] Pramod R, Basavarajappa S, Davim J, A review on investigations in drilling of fiber reinforced plastics, Machinability of Fibre-Reinforced Plastics, pp. 179-194, (2015), De Gruyter Publications [4] J.
Tsao, Comprehensive Analysis of Delamination in Drilling of Composite Materials With Various Drill Bits, Journal of Materials Processing Technology 140 (2003) 335–339

However, they are complex and time consuming processes and resulting materials having a rod shape of finite dimensions.
Formability and process conditions of magnesium alloy sheets, Magnesium Science, technology and applications, Material science forum 2005, 488-489: 453-456 [4] S.H.
Deep drawing of magnesium alloy sheets at warm temperatures, Journal of material processing technology. 2007, 185(1-3): 47-151 [5] J.
Materials Science Forum. 2003, 419-422: 189-194 [7] I.
Enhancement of formability in magnesium alloy AZ31B via friction stir processing, Material science forum. 2007, 539-543:3775-3780

The workpiece material is 40Cr steel has the surface roughness mean values of Ra=0.60μm after grinding.
The effectively active abrasive number is lower for 5% concentration of abrasive so as to attain smaller material removal.
Cai: Journal of Northeastern University, Vol.26(6)(2005), p.578-581 [3] C.
Xiu: Key Engineering Materials, Vols. 329 (2007), p. 527-532
Hou: Advanced Materials Research, Vols. 24-25 (2007) p. 337-342 （a）Cross correlation function curve Fig. 9 The cross correlation curve which measured perpendicular veins on grinding surface and abrasive jet finishing surface （b）Cross correlation coefficient curve τ/mm CCF(τ)/μm τ/mm ρxy(τ)

A conclusion is given that the novel damage detection method using the correlation characteristic of the acceleration response as damage index is feasible and efficient. 1 Introduction As the core of structural health monitoring system, damage detection has become a new challenging issue in recent years [[] Pines DJ, Aktan AE, Status of structural health monitoring of long-span bridges in the United States, Progress in Structural Engineering and Materials. 4(2002) 372-380. ].
For correlation analysis, appropriate reference point shows significant importance [[] Ye Xijun, Yan Quansheng, Wang Weifeng, Li Jian, Modal parameter identification of cable-stayed bridge based on multiple reference dofs stabilization diagram, Journal of South China University of Technology. 09(2011)4-49. ].
The E modulus of the material is 3.0×104 with a mass density of 2500, a poison ratio of 0.15 and a damping ratio of 0.04 without damage.
Journal of Vibration Measurement & Diagnosis. 01(2009)66-71. ].
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (Grant#50978009 and #51008102), Beijing Municipal Commission of Education Foundation (KZ200910005002).

Introduction Electrical discharge machining is a non-conventional method of machining mainly used for cutting difficult to machine materials which are electrically conductive.
The materials of the electrodes are either metallic (a copper, an alloy of tungsten and copper, steel, brass, etc.), non-metal (graphite), or composite (copper-graphite composition) [2].
Fig. 3 The laboratory balance METTLER Toledo PL-IC 303 used for measuring the weights of samples and electrodes Materials of Experimental Samples and Tool Electrodes The material of samples.
Hašová, Study of tool electrode wear in EDM process, Key Engineering Materials 669 (2016) 302-310
Assessing the influence of technological parameters on the surface quality of steel MS1 after WEDM, MM Science Journal, Vol. 2016 (2016) 1194-1200.

Materials and Methods Materials.
Lin et al.: Materials Letter Vol. 65 (2011), p. 1375
[13] AATCC 100: Assessment of Antibacterial Finishes on Textile Materials (2012)
Wiegand et al.: Journal of Materials Science Materials in Medicine Vol. 26 (2015), p. 18
Guerra at al.: Materials Science Forum Vol. 869 (2016), p. 350.

Acknowledgement This work is supported by Beijing Education Committee Science (KM201010028021) and Technology Foundation and Liaoning Nature Science Foundation (20062036, 2004D037).
Journal of Educational Psychology, 2007, vol. 99, no.4, pp. 775-790
Assessing self-evaluation in a science methods course: Power, agency, authority and learning.
Wuhan: Huazhong University of Science and Technology Press, 1990
Journal of System Simulation, 2008, vol.20, no.15, pp.3948-3950.

Proceedings of the 43rd AIAA/ASM E/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Denver, CO, USA, AIAA Paper. 2002, 1672. ], the topology derivative approach [[] Bojczuk D, Szteleblak W.
Journal of Biomimetics, Biomaterials, and Tissue Engineering, 2011, 10: 81-93. ].
The European Physical Journal B-Condensed Matter and Complex Systems, 2002, 28(2): 135-138. ].
Distinct stiffener layouts, rather than vague material distributions, are achieved.
Acknowledgements This study is financially supported by the National Natural Science Foundation of China (Grant No.5115087).

Materials and Methods Soils and Crops Used.
Standard reference materials for soil (GBW-07401), and plant (GBW-07603) were obtained from the China National Center for Standard Reference Materials.
Other parameters reflecting soil texture as sand, silt and clay materials in different proportions were also illustrated in Table 1.
Gao, Journal of Hygiene Research 28(1999),12－14（In Chinese） [24] Hu CQ.
Chinese Science and Technology Press.