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The 3-D model is shown in Figure 1.The material properties for the copper wire bond, bond pad and die are shown in Table1.
The material properties of the shear ram is set to an extent with its Young’s modulus substantial large when compared to other materials in this modeling making the shear tool behaves as a rigid body.
Higher shear height will produce less deformation as the material will have higher resistance to plastic deformation at higher height.
[3] Masayasu Ishiko, Masanori Usui, Takashi Ohuchi and Mikio Shirai, “Design concept of wire-bonding reliability improvement by optimizing positioning in power devices”, Microelectronics Journal 37, 2006, p. 262–268
[4] Caiyuan Wang, “The Quality Test of Wire Bonding”, Modern Applied Science Vol 3 No 12, 2009, [5] ASTM F1269-89 “Test Methods for Destructive Shear Testing of Ball Bonds,” 1991 Annual Book of ASTM Standards, Vol. 10.04, 1991, ASTM, Philadelphia

Synthesis and Flame Retardant Properties of Melamine Modified EH Lignin Rulin Fua, Xiansu Cheng*b College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China arulin_fu@163.com, bchengxiansu@fzu.edu.cn Keywords: EH Lignin, Melamine, Intumescent fame retardant Abstract.
In view of the austere problem that we have to resolved, there has been an increase in research activities targeted at improving the flame ability and thermal stability of materials and more attention had been paid to IFR which is widely used as halogen-free additives in some polymers, rubber and so on, during to its advantages of little smoke and low toxicity [2].
Experimental Materials.
It was widely used to evaluate the flame retardant properties of materials by UL-94 vertical burning tests and LOI measurements.
Suzuki and A.Yamaguchi: Journal of Environmental Polymer Degradation.

Fractals can be used to describe the particle size distribution of geotextile material, and it reflects the physical properties of granular components to a certain extent[7].
China Railway Science. 2012(02)
China Journal of Highway and Transport. 2007(05)
Research on Grain Size Features and Fractal Dmiensions of Soil-stone Mixed Materials[J].
Journal of Chang’an University(Natural Science Edition) . 2004(06): 15-19

Investigation of the SCR Catalyst Ce-V/TiO2 Fen WANG1, a,Xiufeng REN 1,b ,Jianfeng ZHU 1,c and Haibo YANG1,d 1 School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi' an, 710021, China a wangf@sust.edu.cn, brenxiufeng1984@163.com, czhujf@sust.edu.cn Keywords: Lnvestigation; Ce-V/TiO2 catalysts; Sol-gel; SCR; NOx.
When receiving the manuscript, we assume that the corresponding authors grant us the copyright to use the manuscript for the book or journal in question.
Should authors use tables or figures from other Publications, they must ask the corresponding publishers to grant them the right to publish this material in their paper.
Acknowledgements This work is supported by the National Natural Science Foundation of China (grant No.:50432010, 50672056).
The Chinese Journal of Nonferrous Metals. 17(2007) 795-799

Discussion on Perfecting Engineering Guarantee System Yan Xing1, a, Jinfang Zheng2,b , Pengyuan Liu 3,c and Xilu Deng 4,d 1Hebei Normal University of Science and Technology, Qinhuangdao, Hebei, 066004 China 2Hebei Normal University of Science and Technology, Qinhuangdao, Hebei, 066004 China 3Yanshan University College of International Exchage, Qinhuangdao, Hebei, 066004 China 4Hebei Normal University of Science and Technology, Qinhuangdao, Hebei, 066004 China axingyanqq@163.com, bzhengjinfang07@126.com, cfliuqianm@126.com , ddxl8254@126.com Keywords: Engineering guarantee, Engineering project, Guarantee Agency, Guarantee rate Abstract.
When receiving the paper, we assume that the corresponding authors grant us the copyright to use the paper for the book or journal in question.
Should authors use tables or figures from other Publications, they must ask the corresponding publishers to grant them the right to publish this material in their paper.
Recommended by the construction administrative departments take the lead in establishing the database to achieve longitudinal (mainly the construction administrative departments between) and lateral (industry and commerce, taxation and other departments) networking, as far as possible to the engineering guarantee subject provide the contractor and the owner of various materials, the contractor and the owner 's credit level to make accurate judgments.
References [1] Grant Jason D.Understanding surety bonds.Construction Specifier. (2003), p.72-75 [2] Kangari, R., Bakheet, M.Construction surety bonding.Journal of Construction Engineering and Management. (2009), p.232-238

Materials and Methods Preparation and Characterization of Lignin/PAN Blended Nanofibers.
It is envisioned that nanofibers made from lignin wastewater and can be innovative and sustainable materials.
Acknowledgements This research was financially supported by UNU & Gwangju Institution of Science and Technology (GIST) Joint Programme.
Rahman et al., “Poly(hydroxamic acid) ligand from palm‐based waste materials for removal of heavy metals from electroplating wastewater,” J.
He, “Lignin-Derived Fused Electrospun Carbon Fibrous Mats as High Performance Anode Materials for Lithium Ion Batteries,” ACS Publications, Nov. 26, 2013. https://pubs.acs.org/doi/pdf/10.1021/am4043867 (accessed Apr. 02, 2022)

In nature, it is a kind of planning and management of human production activities with the least consumption of materials and energy, which minimizes waste, changes waste into resources, converts waste into harmless waste, or eliminates waste in the production process.”
Materials used for filling are broken coal gangue, fly ash, special binding agent, water, etc.
The use of existing gangue and fly ash in the coal mine as filling materials makes the filling cost significantly reduced and achieve the new idea of green mining technology of “exchanging gangue for coal”.
Journal of China Coal Society.
Coal Science & Technology Magazine.

Liu etc. [9] did tensile test of micro-fiber by using self-made experimental apparatus and obtained stress-strain curves of micro-fiber and provided an experimental device for the scale effect of materials.
Experimental section Materials PLGA (M = 70000, PLA / PGA = 50:50) was bought from Jinan Dai gang Biological Engineering Co., Ltd.
Differences of mechanical properties between fibers and fiber membranes are due to the following reasons: (1) fiber membrane was porous materials while the fiber was solid material; (2) fibers of cross direction in the membranes were not loading force, therefore, only the fibers at the draw direction in the membranes were loaded.
Ding: Science Vol. 27 (2012), p. 62 [10] Y.S.
Tappi Journal, Vol.78 (1995), p. 148

Flaws Simulation of Cave Depot in the Process of Explosion Ou Yihong1, Qian Haibing1, Wangdong1, Wu Ying2, Liang Jianjun1, Du Yang1 1 Logistic Engineering University of PLA,Chongqing, China 2 the science and technology institute Chongqing, Chongqing, China e-mail: oyh1219@163.com Keywords: Flaw; Numerical simulation; Cave depot Abstract: This paper adopts the program Ansys and its secondary exploit platform tools to construct three-dimensional model to simulate the destroy process of cave depot.
Material behavior: elastic modulus E: 2.55E11, Poisson's ratio ν: 0.25 density ρ: 2500 kg/m3, compressive strength: 16 E6Pa, tensile strength: 5 E6Pa.
Acknowledge This work was supported by the Natural Science Foundation of Chongqing.
(No CSTC,2012jjA900015, CSTC,2012jjA90008,CSTC,2010cA0005)and Nature Natural Science Foundation(No51276195).
[2] Liu Da-ren, Hou Xiang-lin, Gao Yue-yang, Numerical Analysis and Imitation of Response on Construction Flaws Damage of Simply Supported Beam, Journal of Shenyang Architectural and Civil Engineering Institute 2006.3, pp188-189

In addition, artificial command will consume manpower and material resources, at the same time it threatens the safety of the command staff.
Acknowledgements The research work is supported by the funding project of Zhejiang Normal University thirteenth period the student extracurricular activity in science and technology project No385.
[2] Microcomputer application technology (Xian University of Electronic Science and Technology Press, china 2004).
[3] M.D Jiao, L Ma and B.Q Fan: Journal of University of Shanghai for Science and Technology, (2003) No2, pp.25-28.