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Engineering mechanics is the study of relevant materials and its application in the motion law of the macro science.
Acknowledgements This work was financially supported by the University basic discipline construction - the mechanics of materials and the Shandong provincial high-quality curriculum - the mechanics of materials.
Journal of Changsha Railway University (Social Science), 2004(4) 147-149.
Journal of Luoyang Institute of Technology (Humanities). 2002, 20(4) 89-92.
Journal of Architectural Education in Insitutions of Higher Learning. 2005, 14(1) 62-63.

Moreover, since traditional materials such as stone, mud, and lime emit less carbon dioxide than industrialized materials and are harmless to humans, they show potential as sustainable construction materials.
For example, in the north, sarooj and other mud or clay materials are used as joint and finishing materials, whereas in Dhofar, nurah, khatri and yeb' are used.
Al Maktoumi, Sarooj mortar: From a traditional building material to an engineered pozzolan -mechanical and thermal properties study, IOP Conference Series: Materials Science and Engineering. 471 (2020)
Kumar, Analysis of a 27‐year rainfall data (1977–2003) in the Sultanate of Oman, International Journal of Climatology. 29 (2009) 605-617
Mansour, Geospatial modelling of tropical cyclone risks to the southern Oman coasts, International Journal of Disaster Risk Reduction. 40 (2019)

The behavior of rubber materials is a nonlinear, incompressible characteristic.
There are 3 type models of hyperelastic materials and their corresponding material constants as exhibited in Table 1.
Acknowledgments The authors would like to thank the Administrative Bureau of Central Taiwan Science Park, the National Science Council of the Republic of China, Taiwan, for financially supporting this research under Contract No. 301201401.
Rivlin: Large elastic deformations of isotropic materials I.
Sohrabpour: Constitutive equations for micropolar hyper-elastic materials, International Journal of Solids and Structures, Vol.46, pp. 2765-2773, (2009)

But to be able to speak of materials it is necessary to define materials as substances that make up any product [3].
Table 1 Mechanical properties of the materials used for Speed Flex helmet.
Journal of Dynamic Behavior of Materials, Vol. 5, pp 117-131, 2019
Advances in Science and Engineering, Vol. 2, No. 4, pp 81-88, 2011
International Journal of Kinesiology and Sports Science, Vol. 7, No. 4, pp 53-65, 2019

The results showed that all three firestop materials meet with the ASTM E84 Class A.
This study tests firestop materials for fire compartments through-penetration according to the test methods specified in the American Society for Testing and Materials (ASTM) E84 [5].
Hazardous Materials, Vol.140 (2007), p.327
Moss: Fire Safety Journal, Vol.42 (2007), p.310
Tsai: Experimental Thermal and Fluid Science Vol.32 (2007), p. 29

Table 1: Materials.
Similar trends were also observed for other materials.
Similar trend was also observed in other types of materials.
Inagaki, Impact compressive failure of a unidirectional carbon/epoxy laminated composite in three principal material axes, Journal of the Society of Materials Science, Japan, 58 (2009), 887-894
Wakabayashi, Experimental method for dynamic compression behavior of composite laminates using SHPB technique, Journal of the Society of Material Science, Japan, 63 (2014), 362-367.

The experimental procedures of mixed mode fracture of several ductile materials are investigated.
Introduction Fracture controlling parameters in ductile materials have been extensively studied in the past.
Bao: Journal of Engineering Fracture Mechanics Vol. 72 (2005), p.505
Lu: Chinese Journal of Mechanical Strength Vol. 24 (2002), p.266
Chen: Strength of Engineering Materials (HuaZhong University of Science and Technology Press, China 2008)

The evaluation of dental materials is made by testing the bio-compatibility.
Biological systems may produce deterioration of materials, known as biodegradation [3].
Reyes-Gasga, Synthesis and characterization of poly(methylmethacrylate) polymerized by microwave energy or conventional water bath, Journal of Applied Polymers Science. 109 (2008) 3953-3960
Bural et al., Influence of polymerization method, curing process, and length of time of storage in water on the residual methyl methacrylate content in dental acrilic resins, Journal of Biomedical Materials Research. 76B(2) (2006) 340-345
Dental Materials. 26 (5) (2010) 171-180

Micro Electric Discharge Machining (µ-EDM) is a non-traditional machining process which is used for drilling micro holes in a high strength-to-weight ratio advanced engineering materials like shape memory alloys that have many applications in the field of aerospace and medical sciences.
The electrode (tool) materials used were tungsten and brass cylindrical rod with a diameter of 100μm.
Lecheheb, Micro electro-discharge machining ink jet nozzles: Optimum selection of material and machining parameters, Journal of Materials Processing Technology, 58 (1996). 53-66
Chen, A study on the machining characteristics of TiNi shape memory alloys, Journal of Materials Processing Technology, 105 (2000) 327-332
Saha, Optimization of process parameters in micro electro- discharge drilling [µ-EDM-Drilling]: A taguchi approach, Advanced Materials Research: Manufacturing Science and Technology III, 622-623 (2012) 30-34

Criterion for Controlling the Stress-Strain State of Composite Dielectric Materials Using the Effective Filtration Method Vladimir Surzhikova and Pavel Fedotovb* National Research Tomsk Polytechnic University, 30, Lenina Ave., 634050, Tomsk, Russia aiva1954@mail.ru, b*pif@tpu.ru Keywords: mechanoelectric transformations, stress-strain state, dielectric, criterion.
The paper presents a brief description of a process of an electromagnetic response generation from dielectric composite materials when they are subjected to an acoustic impulses, a recording method by capacitive receivers and criteria for controlling the stress-strain state (SSS) for this method.
Introduction In the early 1970s, the Tomsk Polytechnic University researchers began to develop a new method for nondestructive testing of structural defects in dielectric materials.
Conclusions The effective filtering method with the consistency of the impulse response of the system with an excitation response of the MET acoustic pulse makes it possible to determine the level of the stress-strain state of dielectric composite materials.
Khorsov, Search for a criterion for controlling the stress-strain state of dielectric structures, Modern problems of science and education 5 (2014), Information on: http://www.science-education.ru/119-15035.