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Introduction With the progress of science and technology, new materials appear constantly, the composite material has become more and more important in the field of modern high-tech or traditional engineering.
When the composite beam is under the pure bending state, the strain on the cross section are distributed linearly, but due to the anisotropy of composite materials.
Structural analysis of polymeric composite materials[M].
Engineering mechanics (statics and the mechanics of materials) [M].
Journal of engineering mechanics, 2014:0-0

Anticorrosion Behaviors of Quaternary Polyethyleneimine in Acidic Environment Xin ZHANGa, Xuedong WU b, Jianzhong LI c, Hui WANG， Dan DAI, Zhenlun SONG Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo China 315021 a email:zxyuzuodeyun@163.com, bemail: xdwu@nimte.ac.cn, cemail: jianzhongli@nimte.ac.cn Keywords: Anticorrosion; Polymeric film; Polyethyleneimine; Adsorption.
This work is expected to provide some valuable information for the molecular design and applications of polymeric corrosion inhibitors in corrosion science. 2 Experimental sections 2.1 Materials and Instruments Quaternary polyethyleneimine was prepared personally according to the reference [14].
Quraishi: Corrosion Science Vol. 36 (1994), p.79 [5] M.
Zheng: Materials Chemistry and Physics Vol. 77(2002), p.655 [7] Y.
Moritz: Journal of Controlled Release Vol. 102(2005), p.737 [13] M.

Introduction Grinding processes are mainly technique employed widely as a finishing and difficult-to machine such as hardness and brittleness materials finishing.
The grinding wheel is a porous solid disk consisting of abrasive grain, bond materials and pores of irregular shapes and different sizes.
Jahanmir: Journal of Tribology ASME, Vol.123(2001), p.101-107 [2] E.
Chang, S.H.Wang, and A.Z.Szeri: Journal of manufacturing science and engineering, Vol.118(1996), p.332-338 [5] Li Changhe, Hou Yali, Xiu Shichao, et al: Key Engineering Materials, Vols. 375-376(2008),p. 449-453 [6] M.R.Schumack, Jin-Bok Chung, W.W.Schultz, et al: Transaction of the ASME, Vol.113(1991), p.190-197 [7] F.
Journal of Engineering for Industry, Vol. 114(1992), p.61-66 [8] V.K.

However, the mechanical properties of the materials are different at different rates of loadings.
The materials may be positive sensitive, insensitive or negative sensitive to strain rates.
Gupta, Tensile, compressive and flexural behaviors of Al5052-H32 in a wide range of strain rates and temperatures, Journal of Materials in Civil Engineering. 32-5 (2020) 04020090
Singh, Responses of aluminium alloy pistons under mechanical and thermal loads, Materials Science Forum. 969 (2019) 231-236, DOI: https://doi.org/10.4028/www.scientific.net/MSF.969.231
Gupta, Mechanical behaviour of magnesium alloy AZ61 at different strain rates and temperatures under tensile, compressive and flexure loads, Journal of Materials in Civil Engineering. 2020, DOI: 10.1061/(ASCE)MT.1943-5533.0003436

Using chemical vapor deposition (CVD) a spontaneous self-organization of these structures was achieved, which introduces the possibility of using this technique to produce self-developed nanostructured multilayer coatings with different starting materials [4, 5].
Materials and Method Experimental setup.
Sun, "Influence of modulation ratio on structure and properties of nanoscale ZrB2/ZrAlN multilayered coatings," Science China Technological Sciences, vol. 53, pp. 772-775, 2010
Du, "The structure and properties of ZrAl(Y)N coatings deposited at various N2/Ar flow ratios," International Journal of Refractory Metals and Hard Materials, vol. 44, pp. 60-67, 2014
Odén, "Influence of chemical composition and deposition conditions on microstructure evolution during annealing of arc evaporated ZrAlN thin films," Journal of Vacuum Science \& Technology A: Vacuum, Surfaces, and Films, vol. 30, p. 031504, 2012

However, for highly resistance materials like diamond and CnZnTe, DLTS is not useful due to the small junction capacitance and difficulties in injecting free carriers with a voltage pulse.
[2] Johnson and Noble M, "Measurement of Interface Defect States at Oxidized Silicon Surfaces by Constant‐Capacitance DLTS," Journal of Vacuum Science and Technology, vol 16, Sep 1979, pp.1407-1411, doi:10.1116/1.570211
[3] Xavier Mathew, "Photo-induced Current Transient Spectroscopic Study of the Traps in CdTe," Solar Energy Materials and Solar Cells, vol 76, Mar 2003, pp.225-242, doi:10.1016/S0927-0248(02)00276-3
[5] Johnson and Noble M, "Measurement of Semiconductor–Insulator Interface States by Constant‐Capacitance Deep‐Level Transient Spectroscopy," Journal of Vacuum Science and Technology, vol 21, Jul 1982, pp.303-314, doi:10.1116/1.571768 [6] E.
Milnes,"Deep Impurities in Silicon," Materials Science and Engineering, Vol.2, Nov.1967, pp.173–180, doi: 10.1016/0025-5416(67)90056-0

Guo, Current status and prospect of magnesium resources and magnesium chemical materials.
Resources Science, 31 (2009) 2072-2079
The Energy Journal, 2 (1987) 77-96
The Energy Journal. 3 (1997) 59-73
Journal of Northeastern University (Natural Science), 34 (2013) 1438-1441

Formulation of �anocomposites Materials.
Synthesis of Materials.
Dental Materials(2005), 21, p.520 ［5］ H.
Journal of Adhesion Science and Technology(2006), 20, p.1401 ［6］ Qiang Li, Yan Zhou and Xiaodong Hang.
Journal of Inorganic and Organometallic Polymers and Materials(2005), 15(4), p.541 ［8］ I.E. dell'Erba and R.J.J.

Journal of Hazardous Materials, 117, 65–73
Journal of Materials Technology Research; 8(1):724 75–86
Bulgarian Journal of Science Education 21:389–395
Journal of Hazardous Materials, 158, 324-332
Journal of Hazardous Materials, 141,237-244.

Introduction Carbon fibers reinforced plastics are intensively used as lightweight materials in the automotive, aircraft, construction, and wind energy sectors.
Specifications of raw materials Parameter Unit Raw materials rCF Polyamide 6 Fiber length mm 40-60 40-60 Fiber linear density dtex 0.5 ± 0.06 1.5 ± 0.15 Single fiber strength MPa 3499 ± 250 440 ± 7.5 E- Modulus GPa 240 ± 37 1.48 ± 0.45 Elongation percent 1.79 ± 0.15 74.9 ± 15 Sizing percent 1.3 ± 0.1 -- Development of rCF/PA6 sliver In order to develop a sliver with unidirectional fiber orientation, recycle carbon and polyamide 6 fibers were blended and subjected to a special carding machine.
Mainka et al., "Lignin – an alternative precursor for sustainable and cost-effective automotive carbon fiber," Journal of Materials Research and Technology, vol. 4, no. 3, pp. 283-296, 2015
Leeke, "Current status of recycling of fibre reinforced polymers: Review of technologies, reuse and resulting properties," Progress in Materials Science, vol. 72, pp. 61-99, 2015
Cherif, "Recent developments in the processing of waste carbon fibre for thermoplastic composites – A review," Journal of Composite Materials, vol. 54, no. 14, pp. 1925-1944, 2020