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This is because: materials can not absorb enough heat to puffing if the barrel temperature is too low, while materials will be coking if the barrel temperature is too high. 2) with the rise of the feed rate, the specific volume drops sharply.This is because: the residence time of the melt materials in the barrel decreases with the increase of the feed rate, which causes to inadequate energy exchange between materials and the outside, thus leading to uneven product structure and bad puffed quality of the extrusion product. 3) moderate screw speed leads to better specific volume.
This is because: when the screw speed is small, the screw and barrel wall’s shear on the material is not enough, which leads to shrivelled product. when the screw speed increases, the residence time of the material in the barrel decreases, which leads to inadequate time for the material to absorb enough heat, and thus extruding bad puffed product.
Journal of Food Engineering, 67 (2005) 317-324 [2] Chiwu BU, Kefei XU,Jiayu TAN.
Proceedings of ICMEM2007 [3] Friedrich Meuser and Norbert Gimsmler, “A Systems Analytical Approach to Extrusion Food Extrusion Science and Technology,” New York: Marcel Dekkerinc, 1992:619 [4] P.O.
Animal Feed Science and Technology, 129 (2006) 116-137 [5] Tang Q J.

Yousuk, Determinants of Donation Behaviour on Flood Disasters in Indonesia, IOP Conference Series: Materials Science and Engineering 847(1) (2020) 012068, doi: https://doi.org/10.1088/1757-899X/847/1/012068
Saaty, Decision making with the analytic hierarchy process, International journal of services sciences 1(1) (2008) 83-98
Yogi, Evaluation of purchase intention of customers in two wheeler automobile segment: AHP and TOPSIS, IOP Conference Series: Materials Science and Engineering 330(1) (2018) 012065, doi: http://dx.doi.org/10.1088/1757-899X/330/1/012065
Sama, Prioritizing intentions behind investment in cryptocurrency: a fuzzy analytical framework, Journal of Economic Studies (2020), doi: http://dx.doi.org/10.1108/JES-06-2020-0285
An analysis of behavioral factors through fuzzy AHP, Journal of Science and Technology Policy Management, (2021), doi: https://doi.org/10.1108/JSTPM-12-2020-0177

Sol-gel synthesis and characterization of ultrafine ZrSiO4 powder Li Zhenquan1,2,a, Zhen Qiang1,3,b* Wang Yali3,c 1 School of Materials Science and Engineering, Shanghai University, Shanghai 200072, P.R.
China 3 Nano science and Technology Research Center, Shanghai University, Shanghai 200444, P.R.
It is widely used as refractory material [3] and Zirconium-based paint [4].
The effects of molar ratios of raw materials, calcination temperature and calcination time on the formation rate of ZrSiO4 have been investigated.
Wu, ZrSiO4 Oxidation Protective Coating for SiC-Coated Carbon/Carbon Composites Prepared by Supersonic Plasma Spraying, Journal of Thermal Spray Technology, 22 (2013) 525-530

Experimental materials and methods Experimental materials.
Sun: Chinese Journal of Ecology.
Yan, et al.: Journal of Nanjing Forestry University (Natural Sciences Edition).
Pfeifer: Forest science.
Fang, et al.: Journal of Shandong University (Natural Science).

Introduction SO42－/MxOy type solid super-strong acid is a new catalytic material developed in recent years.
Experimental Experimental materials.
Journal of Catalysis, 2003, 215 (1):57–65
Chinese Journal ofCatalysis, 2004, 25(9):748-752.
Journal of Chemical Engneering of Chinese Universities, 2006, 20(3): 368-373.

The thermal environment generated by aerodynamic heating significantly changes the mechanical properties of the materials and structure, including the elastic modulus, stiffness, and so on.
The elevated temperature changes the properties of the materials and structures, such as the elastic modulus, Poisson's ratio, and stiffness, leading to changes in the vibration characteristics of structures and components.
The material is 45# steel.
Journal of Propulsion and Power, 2002, 18:284-288
Research on control of heat flux environment simulation for high-speed aircraft [C], Advanced Materials Research, 2013, 705: 528-533

Acknowledgements The authors gratefully acknowledge the National Natural Science Found of China (No.51205044) and the Fundamental Research Funds for the Central Universities (No.DUT14ZD(G)01).
D., et al, Development of a multipurpose machinetool dynamometer with new structure, Journal of Harbin Institute of Technology, Vol. 26, No. 4, 1994, pp. 85-89
Sarhan, A., Sayed, R., et al, Interrelationships between cutting force variation and tool wear in end-milling, Journal of Materials Processing Technology, Vol. 109, 2001, pp. 229-235
Y., Investigation and manufacture of unitary 3D piezoelectric force measuring platform, Journal of Dalian University of Technology, Vol. 40, No. 5, 2000, pp. 570-572
Tounsi, N., Otho, A., Dynamic cutting force measuring, International Journal of Machine Tools and Manufacture, Vol. 40, 2000, pp. 1157–1170

Experimental procedure Workpiece Materials.Workpiece material is Ti6Al4V in the experiments.
Tool material and geometry parameters.Titanium is a material difficult to process.
In the cutting process of titanium alloy, high cutting temperature make the chemical reaction happened between tool materials and gas medium or between workpiece material and gas medium.
References [1] Jawaid A, Sharif S, Koksal S，Evaluation of wear mechanisms of coated carbide tools when face milling titanium alloy，Journal of Materials Processing Technology. (2003), 99(3):266-274
[7] Su Yu，The development of cryogenic MQL device and Mechanism of cryogenic high-speed cutting difficult to cut materials research, [D], Nanjing University of Aero.

Cuevas2,e 1Advanced Materials Engineering Group, Escuela Técnica Superior de Ingeniería, Universidad de Sevilla, 41092 Sevilla, Spain 2Department of Chemical Engineering, Physical Chemistry and Materials Science, Escuela Técnica Superior de Ingeniería, Universidad de Huelva, 21071 Huelva, Spain apurban@us.es, bfternero@us.es, crosamaria.aranda@dqcm.uhu.es, drastacio@us.es efgcuevas@dqcm.uhu.es Keywords: amorphization; crystallization; titanium; aluminium; nickel; mechanical alloying Abstract.
The Ti-Al-Ni crystalline alloys are attractive low-density materials with excellent properties at high temperatures [4].
Fischer, Modeling concepts for intermetallic titanium aluminides, Progress in Materials Science. 81 (2016) 55-124, 10.1016/j.pmatsci.2016.01.001 [5] R.M.
Cuevas, Structure and Size Distribution of Powders Produced from Melt-Spun Fe-Si-B Ribbons, Key Engineering Materials. 876 (2021) 25-30, 10.4028/www.scientific.net/KEM.876.25 [6] P.
Cintas Físico, Solid State Amorphization of Ti60Si40 Alloy via Mechanical Alloying, Key Engineering Materials. 876 (2021) 7-12, 10.4028/www.scientific.net/KEM.876.7 [7] R.

Kattan, “Mechanics of Composite Materials with MATLAB’, Springer-Verlag Berlin Heidelberg 2005
Sandwich panel cores for blast applications: Materials and graded density.
Kollari, “Mechanics of Composite Materials”, Springer-Verlag Berlin Heidelberg 2003
Kaw, “Mechanics of Composite Materials”, the Taylor & Francis ,2006
Al-Qadisiyah Journal for Engineering Sciences, Vol. 13, No.3,2020