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REFERENCE [1]Y.Nakata, O.Yamamoto, K.Shimizu: Materials Trans.
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When the sound waves spread to the material surface, some reflect in material surface, and others transmit forward within the material.
Acknowledgements This work was financially supported by Dalian Science and Technology Project (2011E13SF049).
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Journal of Highway and Transportation Research and Development in China, 1:33-37. (2003).

Liu: Recent Research in Nondestructive Evaluation of Civil Infrastructures, Journal of Materials in Civil Engineering, ASCE, Vol. 15, No.3 (2003), p. 298
Jiang: Vibration-Based Damage Detection of Composite Wingbox Structures Using Improved Hilbert-Huang Transform, Key Engineering Materials, Vols. 324-325 (2006), p. 539
Farrar: Damage Diagnosis Using Time-Series Analysis of Vibration Signals, Smart Materials & Structures, Vol. 10, No.3 (2001), p. 446
Kim: Structural Damage Detection in the Frequency Domain Using Neural Networks, Journal of Intelligent Materials Systems and Structures, Vol. 18 (2007), p. 785
Melhem: Structural Damage Detection Using Signal Pattern-Recognition, Key Engineering Materials, Vol. 400-402 (2009), p. 465

Thus the cone calorimeter is a useful tool for the evaluation of fire retardant materials.
Experiments Materials PP (F401; homopolymer, melt-flow rate=2.5g/10min) was supplied as pellets by Yangzi Petrochemical Co.
Fig.1 The HRR curves of pure PP and flame retardant PP composites In order to evaluate the fire safety of the materials in a real fire, the values of THR during the burning course of the material are commonly used.
The use of VSB-1 may be a promising way for the design new efficient intumescent materials.
Vandersall: Journal of Fire and Flammability.

Banerjee. : Materials Science and Engineering: C, Vol 28 (2008), p. 414
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Kyo-Han: Progress in Materials Science, Vol 56 (2011), p. 1137
Szpunar: Materials Science and Engineering: C, Vol. 28 (2008), p. 94
Amaya: Journal of Physics and Chemistry of Solids, Vol 71 (2010), p. 1754

The introduction of experimental equipment and materials The study using J96CY-160 ton hydraulic fast press, fine-blanking with negative clearance die, scanning electron microscope, and related equipment.
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A Comparative Study on Various Ductile Crack Formation Criteria [J].Journal of Engineering Materials and Technology, 2004, 126 (3): 314-324
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Image processing techniques have been used over the years to convert printed material into electronic form.
The system proposed will come in handy, in cases of digitization of printed material, in which the original contents page is not available or has been damaged.
Wahl, “Document Analysis System”, IBM Journal of Research and Development, Volume 26, Issue 6, November 1982
Journal of Academic Librarianship, 32(6):641-645, 2006
Advances in Focused Retrieval: 8th International Workshop of the Initiative for the Evaluation of XML Retrieval (INEX 2009), Lecture Notes in Computer Science.

Meanwhile, the thickness changes and the materials flow conditions of the DP plank during the hot stamping process were also analyzed.
Fig.4 The thickness changes distribution Fig.5 The thinning changes distribution Fig.6 The positions of the experimental points Fig.7 The flow condition of plank materials 4)The figure 6 shows the choice of experimental points during simulation of hot stamping process of DP steel blank.
Figure 7 shows that the flow condition of the plank materials occurs mainly in the region of the blank holder (i.e. the flange region) in the deep drawing process.
It can be seen from the figure 7 that the flow of materials is very slow, and the small deformation defects will be removed in the latter trimming process.
Investigation of the thermal-mechanical properties of hot stamping steel, Journal of Materials processing Technology, 2006.177: 452-455

In these sensors, the piezoelectric material is used as the signal detection.
In piezoelectric materials, coupling between the electrical and mechanical parameters gives rise to mechanical deformation and vice versa upon the application of an electric field.
For nonpiezoelectric materials, the electrical field is related to the electric displacement, but for piezoelectric materials, the electrical field is extended to (8) where Ei is the ith component of the electric field, and βijσ is the dielectric constant under a constant stress.
It’s worthy to point out that the coupling between the structure and electric field, which is a natural property of piezoelectric materials, must be considered.
Fan, Potential diagnostic applications of biosensors: current and future directions, International Journal of Nanomedicine, 1 (2006), 433-440

Nondestructive Testing of Mechanical Properties of Pine Laminated Veneer Lumber Bing Xue1,2, Yingcheng Hu1,a 1Key Laboratory of Bio-based Material Science and Technology of Ministry of Education, College of Material Science and Engineering, Northeast Forestry University, 150040, Harbin, China 2 Heilongjiang University of Science and Technology, 150027, Harbin, China a yingchenghu@163.com (Corresponding Author) Keywords: nondestructive testing (NDT); dynamic Young’s modulus; laminated veneer lumber (LVL) Abstract.
In spite of many alternative materials like iron, plastic, and concrete, which can be used instead of solid wood in different areas, wood remains superior as a natural engineering material.
Due to depletion of forest resources, forest products industries are faced with a crisis in obtaining suitable raw materials in sufficient amount.
Materials and Method In this study, the rotary-cut veneers used were made from pine (Pinus sylvestris L.
Liu: Wood-based Resource and Materials (China Forestry Press, Beijing 2004) [4] Y.C.