Search results

Experimental and FEM Modal Analysis of Workbench for PCB Drilling Machine Hongqun TANG1,2,a, Chengyong WANG*1,b, Bing WANG1,c,Lixin HUANG1,3,d, Shanshan HU 2,e, Zhishun CHEN 1,f 1 Guangdong University of Technology, Guangzhou, P.R.China 2 Key laboratory of new processing technology for nonferrous metals and materials, Ministry of Education, Guangxi University, Nanning, P.R.China 3 Shanghai University of Engineering Science, Shanghai, P.R.China a tanghongqun@126.com, bcywang@gdut.edu.cn, csupbing@163.com, dhlx_1067@163.com, e chloee_2000@163.com, f316370200@qq.com Keywords: Workbench for PCB drilling machine, Natural frequency, Damping ratio, Vibration mode Abstract.
The material of X-axis and Y-axis workbenches are granite.
Acknowledgements This study was supported by National Science Foundation - Guangdong Province Foundation, China (No.
U0734007) and Foundation of Key laboratory for new processing technology for nonferrous metals and materials, Ministry of Education, Guangxi University, China (No.
GXKFJ-11) References [1] B.Wang, C.Y.Wang, H.Q.Tang etc.: Machine Tool Engineering,Vol.43 (2009) No.12,pp. 3-10 (In Chinese) [2] Anish Paul and Shiv GKaPoor: International Journal of Machine Tools and Manufacture,Vol.45 (2005) No. 4-5, pp. 421- 431 [3] Sabate N,Vogel D,Golhardt, etc: Journal of micro-electromechanical system,Vol. 16 (2007) No.2, pp. 365-370 [4] Z.Yang, Q.Tan and J.E.Shi: Part B: Journal of Engineering Manufacture, Vol. 218 (2004) No.12, pp. 1735-1740 [5] Y.P.Gong, F.E.Ehmann and L.Cheng: Journal of Materials Processing Technology, Vol. 141 (2003) No.3, pp. 16-28

Parameters of rock mass and constitutive model There are six kinds of rock mass materials used in the simulation, including moraine deposit, alluvial deposit, and fully weathered, strongly weathered, weakly weathered, new bedrock.
The physical and mechanical parameters of materials used in the simulation are given in Table 1.
All the materials are considered as ideal plastic.
Canadian Journal of Earth Sciences, 2004, 41(2):165-182
Advance in Earth Sciences, 2004, 19:318-323.

Materials and Methods CEB-FIP Method.
De Belie, “Effect of the Mechanical Load on the Carbonation of Concrete: A Review of the Underlying Mechanisms, Test Methods, and Results,” materials, 2021, doi: 10.3390/ma
Zhang, “Effect of Temperature on Concrete Carbonation Performance,” Advances in Materials Science and Engineering, vol. 2019, 2019, doi: 10.1155/2019/9204570
Thombare, “Accelerated Carbonation Assessment of High-Volume Fly Ash Concrete,” Journal of Materials Science and Chemical Engineering, vol. 08, no. 03, pp. 23–38, 2020, doi: 10.4236/msce.2020.83002
Fante et al., “Behavior of cementitious mixtures with filler carbonate subjected to accelerated carbonation,” Case Studies in Construction Materials, vol. 17, Dec. 2022, doi: 10.1016/J.CSCM. 2022.E01300

Experimental Materials.
IOP Conference Series: Materials Science and Engineering, 2019. 509: p. 012080
IOP Conference Series: Materials Science and Engineering, 2019. 509: p. 012014
Journal of Industrial Textiles 2016, 47 (8), 2153-2183
Journal of Composites Science 2019, 3 (1), 27

As stated by Chopra and Meindl [2], a typical supply chain includes the following five stages: component/raw material suppliers, manufacturers, retailers, wholesalers/distributors and customers.
Green distribution consists of green packaging with aims to (1) downsize packaging, (2) use “green” packaging materials, (3) promote recycling and reuse programs, (4) cooperate with vendor to standardize packaging, (5) encourage and adopt returnable packaging methods and (6) minimize material uses and time to unpack [5].
Benchmarking: An International Journal, 12(4), pp. 330-353, 2005
International Journal of Physical Distribution and Logistics Management, 39(5), pp. 360-387, 2008
Mosakowski, Entrepreneurial Resource, Organizational Choice, and Competitive Outcomes, Organizational Science, 9(6), pp. 625-643, 1998

The excessive heat generated and the high cutting speed accelerates the tool wear during machining operations, especially on hard-to-cut materials such as Inconel 718.
"Analysis of residual stresses induced by dry turning of difficult-to-machine materials."
Asian Journal of Scientific Research 4 (3):255-263
CIRP Journal of Manufacturing Science and Technology 4 (1):33-37. doi: https://doi.org/10.1016/j.cirpj.2011.07.003
Journal of Materials Processing Technology 209 (10):4645-4653.

Experimental and Results The experimental testing campaign has requested the manufacturing of chemical-designed materials due to difficulties in purchasing it from the market.
The materials were manufactured, under ENEA requirements, certified research facility in Italy, obtaining six experimental ingots.
The base materials to evaluate the welding parameters were 10 plates (dimensions: 100 × 170 × 3 mm with a tolerance of +/ - 0,15 mm) and additional 22 plates were used to the welded coupons.
Journal of Materials Science and Applications.
Oluwole, Journal of Minerals & Materials Characterization & Engineering, Vol. 9, No.1, pp.13-23, 2010, jmmce.org Printed in the USA.

Biological processes operate at ambient temperature and pressure, harnessing renewable energy sources, and effectively recycling waste materials [30].
This includes exploring new materials with enhanced energy efficiency, durability, and cost-effectiveness [51] [52].
Materials Today: Proceedings 66 (2022): 140-145
"A critical review on improving hydrogen storage properties of metal hydride via nanostructuring and integrating carbonaceous materials." 
"Current research trends and perspectives on materials-based hydrogen storage solutions: a critical review." 

Jiao 2, b 1 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, PR China 2 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, PR China a xcxu@whrsm.ac.cn, byyjiao@whrsm.ac.cn Keywords: failure surface, rigid retaining wall, clay, variational principle, analytical solution.
Many analytical or numerical efforts have been paid to determine the failure surface in solid materials [3,4,5].
Vol 47(1997): p.185 [8] Wang W.Z., Wu Y.Z.: Hunan Communication Sciences And Technology.: Vol 21:2(1995): p.70 [9] Bang, S.: Journal of Geotechnical Engineering, ASCE.
Vol 110(1984): p.41 [17] Fang, Y.S., Ishibashi, I.: Journal of Geotechnical Engineering, ASCE.
Vol 112(1986): p.317 [18] Cao Z.M.: China Journal of Highway and Transport.

Journal of Vibration and Shock, 15, 3(1996), pp. 16-21
Chinese Journal of Mechanical Engineering, 36, 7(2000), pp. 66-68
Journal of Wuhan University of Science and Technology, 32, 2(2009), pp. 149-153
Advanced Materials Research Vol. 97-101 (2010), pp. 4328-4331
Chinese Journal of Mechanical Engineering, 45, 7(2009), pp. 259-264