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In fact, μp is influenced by different deformation mechanism of materials during scratch, such as plowing, cracking and crazing [5].
B.Bhushan et al. [10,11] studied the variation of friction coefficient of silicon, silicon dioxide and natural diamond materials under different loads.
Journal of applied physics. 87 (2000) 1201-1210
Materials Science and Engineering A. 528 (2011) 4522-4527
Materials Science and Engineering A. 427 (2006) 232-240.

Material parameters of LK and YU models.
GmbH, Metal forming handbook, Springer Science & Business Media, 1998
Hodgson, Comparison of bending of automotive steels in roll forming and in a V-die, in: Key Engineering Materials, Trans Tech Publ, 2012, pp. 797-802
Weiss, Evolution of elastic modulus in roll forming, International Journal of Material Forming, 10 (2017) 463-471
Uemori, A model of large-strain cyclic plasticity describing the Bauschinger effect and workhardening stagnation, International journal of plasticity, 18 (2002) 661-686.

Experimental Materials. ɛ-caprolactam (Technical grade, DSM company), AH-Salt (Technical grade, BASF), Aminocaproic acid (AR, Zhengzhou Alpha Reagent Co., Ltd.), SEED (Industrial grade, Huajian Nylon Resin Co., Ltd.), High-purity N2 (99.999%, Shanghai No.5 Steel Gas LLC).
The materials were heated to 240℃ with the protection of high purity nitrogen, keep the temperature for 3h to make the materials melt and reflux, then heat the mixture up to 260℃ and keep for 3h, raise the temperature gradually to 270℃ and maintain for 1h.
References [1] Sutton D, Stanford JL and Ryant AJ: Journal of Macromolecular Science-physics B.
C, Shen, L, Huang, S, He, C and Liu, T: composites Science and Technology.
Demma: European Polymer Journal.

Based on the traditional basement, it combines materials science, contrology, environmentology, energy science.
We extract material and energy from the nature, and manufacture the engineering materials after machining.
This process will waste lots of materials and also break the environment.
It can use the materials effectively and reduce the pollution.
The current green manufacturing techniques include: Resource saving technique.Manufacturing engineering cost raw materials the most.

Experiment Materials.
In order to consideration of these materials’ strain rate dependence, Cowper-Symonds dynamic constitutive equation shown in Eq.(1) was adopted
(1) Here, is dynamic yielding stress, is static yielding stress, is strain rate and are materials’ constants, respectively.
Table 5 Strain rate papameters Materials C P Brass 3.2-E+5 4.9 PC 25 2.7 PMMA 11 6 Analytical results The collision analysis results are shown in Fig.9.
This deformation mode stems largely from the strain rate dependence of the bullet and target materials.

The analytical result suggested that the helium volatiles from the fresh branches of C. camphora can be applicable to biomedicine and spicery industrial materials.
Materials and Methods Materials and Reagents. 10-year-old C. camphora was selected out from the experimental forest of Central South University of Forestry and Technology in Changsha city, Hunan Province, China.
Dai: JiangXi Forestry Science and Technology Vol. 6 (2007), p. 30 [2] J.
Goh: Journal of Tropical Forest Science Vol. 6 (1994), p. 286 [3] Y.Z.
Li: Journal of Central South University of Forestry & Technology Vol. 29 (2009), p.36 [4] H.

Journal of Engineering Mechanics, 2009, 135(1): 31-40
Safety Science, 2006, 44(2): 87－109
Journal of Safety Research. 2006, 37:511-517 [4] Timothy R.
Recent Developments in Occupant Protection Interior Component Design and Construction Utilizing Advanced Expanded Polyolefin Bead Foam Materials[C].
International Journal of Impact Engineering, 2010, 37(3): 274－284

The mechanical property of material for the runner chamber is shown in Tabel 1.
Chinese Journal of Mechanical Engineering, 2014,25(11):1447-1452
Journal of Chongqing University, 2012,35(7):37-43
Journal of Northeastern University(Natural Science, 2013,34(5):691-694
JOURNAL OF MACHINE DESIGN, 2014,31(2):24-27

Materials Science in Semiconductor Processing 78 (2018): 13-21. ].
Journal of applied physics 93.4 (2003): 1954-1960. ].
Materials Science Forum.
Materials Letters 181 (2016): 325-327. ].
Journal of Applied Physics 132.1 (2022). ].

In this paper, bentonite was adopted to prepare different materials for mango preservation, and the effects of various treatments on fresh-cut mango were studied.
Experimental Material.
Taking full advantage of betonite characteristics of adsorption ability, chemical stability and nontoxicity, two materials made from betonite were applied to keep mango fresh under different treatment methods.
Vijaya Raghavan: Journal of Food Engineering, Vol.91 (2009), p. 319-324 [15] H.M.
H., Murray: Applied Clay Science, Vol. 25(2004), p. 237–243 [18] Xiaolin Zheng, Shiping Tian, Michael J.