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The monitored components or materials send out the sound waves because of the stress deformation and structure deformation or local weak collapse, and the acoustic emission technique is used to sample and dispose those waves to comprehend the internal force, damaged degree of the target component or material, through sound waves that sent out by the monitored slave computer, and combined with the engineering practice, we can achieve safety assessment, risk prediction, nondestructive testing and other purposes.
These defects and damages will send out the weak acoustic signals when receive other external forces or external influences, and the essence of those singals is the local energy instantaneous release of the defect position inside the target material, its intensity and frequency changes are closely linked with internal materials.
Subsequently, Canada, the Soviet Union, Japan and other countries have begun to study the acoustic emission instrument, and in the 1960s and 1970s, acoustic emission technique gradually used widely in dam safety monitoring, geological safety testing, materials testing and security assessment.
Liaoning: Chinese Journal of rock mechanics and Engineering, 2005(19): 3512~3156 (in Chinese) [6] Li Moxiao, Zhang guang, Brief probe of the AE Activity During the Faliure Process of Rock During Uniaxial Compression:[D].
Wuhan: Wuhan University of Science and Technology, 2010(in Chinese) [8]Veronique Smanio;Marion Fregonese;Jean Kittel;Thierry Cassagne;Francois Ropital;Bernard Normand.

As the boehmite nano-materials and the polymer bond, the AlOOH of boehmite exists in the form of chemical bonds, which ensures the transmission property of the polymer matrix.
Few literatures on the composite materials prepared with simple solution blending method of inorganic nano-phase having good dispersion in the organic phase are reported.
Acknowledgements The work was financed by the Guangxi Provincial Natural Sciences Foundation (0640041).
Liao, et al..: Materials Transactions Vol. 49 (2008), p.1741
Zhou, et al..: Journal of the Chinese Ceramic Society Vol. 37 (2009), p.1288.

Piezoelectrics is the coupling of structural and electric fields, which is a natural property of materials such as quartz and ceramics.
Acknowledgement This work is supported by National Natural Science Foundation of China (50942022) and Doctoral Foundation of Shandong Province (2008BS04016), Natural Science Foundation of Shandong Province (ZR2009FM018).
S., Modelling Piezoelectric Modules with Interdigitated Electrode Structures, Computational Materials Science, Vol. 26, (2003) 36
The Sense Investigation on Orthotropic Piezoelectric Composite Materials Based On FEM[J].
Journal of Test and Measurement Technology, 19 (2003) 98

Introduction Due to their low density, superior wear resistance, and high temperature strength, engineering ceramic materials are increasingly being used for critical components in engineering systems [1].
While such applications are growing, there has not been commensurate improvement in the ability to cost-effectively machine these materials.
Furthermore, the recoil melting materials splash to the nozzle surface and lead to the expansion of nozzle diameter.
Steinbrech: Journal of the European Ceramic Society, Vol. 28 (1) (2008), p.247 [2] Jay C.
Eng Vol. 122 (2000), p. 666 [3] X.L.Tian, J.F.Yang and C.Liu: Int J Adv Manuf Technol Vol. 16 (2010), p. 529 [4] X.L.Tian, J.F.Yang and C.Liu: Materials Science Forum Vol. 626-627 (2009), p. 565

Bućkoc, Leszek Chlubnyd and Dariusz Zientaraf AGH University of Science and Technology, Faculty of Materials Science and Ceramics al.
Sci. 42 (3), 2007, 772-778 [20] Talako T., Ilyuschenko A., Letsko A., SHS Powders for Thermal Spray Coatings, KONA Powders and Particle Journal, 27, 2009, 55-72 [21] Łopaciński M., Lis J., Ceramic Functionally Gradient Materials for armour applications, ECerS Proc. of the 10th Int.
Alon-based materials prepared by SHS technique.
Preparation of Ti3 AlC2 and Ti2 AlC powders by SHS method,  Materials Science & Technology 2009, October 25-29, 2009 : Pittsburgh, Pennsylvania.
AGH-University of Science and Technology, Kraków 2006.

Materials and Methods Contact angle measurement.
Chinese Science Bulletin, 2011, 56: 1241–1245
Chinese Science Bulletin, 2010, 55: 1589-1594
Chinese Science Bulletin , 2008,53:2704-2709
Chinese Science Bulletin, 2010, 17: 1744–1746

With the development of science and technology, the ink-jet printing is developing in full swing in the emerging industry.
Fig.7 3D ink-jet 2) System trimming evolution line: The original heating resistance and liquid channel are trimmed; the jet chamber is designed as an internal channel that can store the ink and provide the ink passage; its material is modified that has the deformation (it is similar to the heating resistance).
That is, after the trimming, not only the jet chamber has achieved the triple functions, but also the components are reduced, making the whole product becomes simple. 3) Geometrical evolution line: The ink-jet head can achieve 3D ink-jet effect, as the figure 7 shows. 4) Object segmentation evolution line: With the development of technology, the material will become diversity.
Acknowledgement This study is supported by National Science and Technology Support Program (2012BAF13B05) and Printing Equipment Inspection and Innovation Design Team of Beijing Institute of Graphic Communication (23190112094) and Institute Level Key Projects Funded by Beijing Institute of Graphic Communication (No. 23190112029).
References [1] TAN Run-hua: Innovation design —TRIZ: theory of inventive problem solving(China Machine Press, Beijing 2002) [2] ALTSHULLER G S: Creativity as an exact science: the theory of the solution of inventive problems (Gordon and Breach Science Publishers, Philadelphia 1984) [3] Nikolay Shpakovsky: Evolution tree---Analysis of technical information and generation of new ideas (China Science and Technology Press, Beijing 2006) [4] ZHAO Hao-yu, JIANG Tao, LI Ying-li, ZHAO Ming: Chinese Journal of Engineering Design Vol. 19 (2012), p.75 [5] LIU Yi-xiong: Print Today Vol. 5 (2007), p.36 [6] PU Jia-ling: Print Today Vol. 2 (2005), p.3 [7] SUN Wei-jun: Design and Fabrication of a Thermal Printer Head Based on Carbon Nanotubes (MS, Huazhong University of Science &Technology, China 2009)

Take,, the state space equation of system in free vibration is as below: (10) Order-reduced model of the blade-disk Parameters of the bladed disk model in Fig.3-1 are shown as table 1: Table 3-1 Model parameters of free blade-disk parameter meaning value parameter meaning value Blade No. 80 equivalent stiffness Blade length viscosity damping coefficient 6.5 Blade width elastic modulus Blade thickness material density The coefficient matrix of state-space equation according to Eq.(10) is noted as.
Acknowledgements This research is supported by the National Natural Science Foundation of China (51175517), National Basic Research Program of China (973 Program-2013CB035706).
Peraire: submitted to AIAA Journal (2002) [4] WAN Baiwu, WU Shouzhang: submitted to Acta Automatica Sinica (1981) [5] Orbak AY, Turkay OS, Eskinat E: submitted to Proceedings of the Institution of Mechanical Engineers (2003) [6] YU Tao: submitted to Chinese Journal of Construction Machinery (2007) [7] Jamshidi: submitted to Large-scale systems modeling and control (1983) [8] ZHU Yaolin, YANG Zhihai: submitted to Microcomputer Information (2011) [9] ZHANG Guoliang, KE Xuzheng: submitted to Journal of Projectiles, Rockets, Missiles and Guidance (2005) [10] M.Aoki: submitted to Journal of IEEE Trans.AC-13 (1968) [11]Wang Jianjun, Yao Jianyao: submitted to Journal of Aerospace Power (2008)

The material of plate and beams is steel.
Journal of Sound and Vibration, 2009, 319: 681-697
Journal of Sound and Vibration, 2004, 273: 619-635
Journal of Sound and Vibration, 2010, 329: 3759-3779
Journal of Sound and Vibration, 2009, 321: 254-269

Introduction Designers should consider the material, energy, and information flow during the conceptual design or re-design of electromechanical products.
Acknowledgement This study was supported by the National Natural Science Foundation of China (Grant No: 50875133).
Wright: European Journal of Operational Research, Vol. 13 (2001) No. 4, pp. 664-674
Wang: Journal of Shanghai Jiaotong University, Vol. 41 (2007) No. 4, pp. 565-568.
Zheng: Journal of Engineering Design, Vol. 15 (2008) No. 3, pp. 164-169.