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Introduction Porous materials [1, 2] are the materials contain pores (voids) which are connected or closed.
Porous materials are commonly found in nature and industrial materials such as manufactured metals with an number of pores to reduce weight, save materials, and increase heat retention.
Porous materials are used currently in many areas of applied science and engineering.
Ordnance material science and engineering.
Advanced engineering materials.

Introduction Functionally graded materials (FGM) are heterogeneous materials in which the elastic and thermal properties change from one surface to the other, gradually and continuously.
The material is constructed by smoothly changing the volume fraction of its constituent materials.
Kwon and M.Crimp: Composites and Functionally Graded Materials.
V.Wood: Journal of Materials Science.
Weng: International Journal of Engineering Science.

The 7th volume of the journal Engineering Innovations contains articles that accent the reader's attention on the latest engineering design and results of research in materials science, engineering design, urban transport network development issues, wastewater treatment, investigation of thermophysical properties of alternative engine fuel, etc.
The presented articles will be helpful to many engineers and researchers in materials, mechanical engineering, civil engineering and environmental protection.

A SOMNN Model for Transport Risk Assessment of Hazardous Materials by Rail Ke Pana, Shouan Guanb aSchool of Civil and Safety Engineering, Dalian Jiaotong University, Dalian,116028,China bLiaoning Academy of Safety Science, Shenyang, 110004, China Keyword: Railway siding for transport of hazardous materials; Risk pattern classification; SOMNN; Multi-attribute risk assessment; Abstract.
This model provides a new method for transport risk assessment of hazardous materials by rail.
Petroleum and its subsidiary products are the main hazardous materials transporting by rail.
Transport risk assessment model of hazardous materials by rail based on SOMNN The establishment of risk assessment index system for transport of hazardous materials by rail.
Risk analysis for road and rail transport of hazardous materials: a simplified approach.

[4] Lu C, Chen P, Yu Q. : Journal of Applied Polymer Science, Vol. 106 (2007), p. 1733-1741． [5] Jang J, Yang H J.: Journal of Materials Science, Vol. 35(2000), 2297-2303．
(In Chinese) [9] Qi Hongyu, Wen Weidong: Materials Review, Vol. 1(2001), p. 36-38
[11] Zhang Congfang: Journal of Beijing University of Science and Technology, Vol. 4 (2000), p. 354-357
[18] Liu Li, Fu Hongjun, Huang Yudong, Yang Min: Journal of aerospace materials, Vol. 2(2005), p. 60-62
[21] Fang Qinzhi, Li Huimin, Wang Tiejun: Chinese Journal of Polymer Science, Vol. 10(2007), p. 712-714.

Katoh, Journal of Nuclear Materials 560 (2022) 153494
Taylor, Journal of Nuclear Materials 68 (1977) 19-31
Journal of Nuclear Materials 15 (2011) 306-310
Bauer, Journal of Nuclear Materials 296 (2001) 43-53
Was, Fundamentals of Radiation Materials Science, Springer (2007) Chapter 11

This allows MPM simulations to be carried out for structures and materials discretized by Voronoi tessellations.
This extension can bring more flexibility in discretizing the structures/- materials.
A particle method for history-dependent materials.
Journal of Computational Physics, 230(16):6379 -- 6398, 2011
Computer Modeling in Engineering and Sciences, 5(6):477--495, 2004

Hexagonal crystal system materials have very important applications in modern society.
The low-temperature-sintered hexagonal ferrites are widely applied in Multilayer-Chip-Inductor (MLCI) which is key components in 5G era. [4] Meanwhile, the research of synthesis and properties of super-hard materials, such as hexagonal boron nitride (h-BN) material, has been a focus of solid state physics and material science. [5,6] As stated above, hexagonal B-N and hexagonal ferrites are all hexagonal crystal system materials and they have played very important roles in our modern society.
Journal of Inner Mongolia Normal University (Natural Science Edition), 2019, 48(3):200-204
Growth of two dimensional materials on hexagonal boron nitride (h-BN).
Science, 2004, 306(10): 666-669

Technological Method of Using Functional Materials in a Heat-Protective Clothing Package A.
Such materials can change their shape at different temperatures.
Karaman, Effects of training on the thermomechanical behavior of NiTiHf and NiTiZr high temperature shape memory alloys, Materials Science and Engineering A, (2020) 1-10
Aris, Experimental study on two way shape memory effect training procedure for NiTiNOL shape memory alloy, In: ARPN Journal of Engineering and Applied Sciences.
Nazarenko, Experimental evaluation of thermal protection properties of volume textile materials, Materials Science Forum, 2020, pp. 916-921

Shang, Materials Science, 25(2011), p.77 [4] Y.
Xiao, Materials Science. 23(2009), p.83 [9] D.
Zhang, New Building Materials. 2(2010), p.25 [11] T.
Ke, Materials Science. 17(2003), p.69 [14] S.
Zhang, Journal of materials science and engineering. 28(2010), p.946