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Observation of damage evolution is of great importance to the understanding of the failure process of rock materials.
Introduction Rock is one of the most widely used but most complicated engineering materials.
The experiment of a circular disk under diametral compression, namely the Brazilian disc test, is a generally used experimental method to measure the tensile strength of rock materials [5,6].
In this paper, the similar idea is applied to the statistical analysis of strain field from DIC to analyze the damage of rock materials.
Method (DSCM), Key Engineering Materials, Vol. 326 (2006), p. 1117, (in Chinese) [8] M.A.

Aslani, A review on recent advancement of electromagnetic interference shielding novel metallic materials and processes.
Journal of Materials Chemistry C. 12 (2024 –14808
Journal of the American Ceramic Society. 59(3–4) (1976) 146–149
Journal of Engineering Sciences. 10(1) (2023) C1-C8
Materials Science Forum. 1096 (2023) 73–9.

Quartz block, also known as silica, is the raw materials (also known as silica sand) of not only production of quartz sand, but also quartz refractory materials and firing ferrosilicon.
Continual development of fly ash utilization science and technology, Journal of Architecture Material, 1998,(2): 17-19
Preparation and properties of cast aluminium-ceramic particle composites, Journal of Materials Science, 1981, 16: 983-993
Materials Science and Engineering, 2008, A487: 536-540
Improvement in mechanical properties of in-situ Al-TiB2 composite by incorporation of carbon Materials, Materials Science and Engineering, 2003, A339: 227-231

Therefore the complete form of the functional (1) is suggested for elastic-plastic materials.
For the perfectly plastic materials the is determined by the following relationship [5]; (12) where is a proper yield criterion suited for this problem and is the elastic coefficient of the hook’s law.
Johnson: International Journal of Mechanical Sciences, Vol. 24 (1982), p. 175 [2] E.
Xu: Journal of Mechanics and Physics of Solids, Vol. 43 (2001), p. 1421 [3] J.P.
Ferron: Journal of Materials and Processing Technology, Vol. 155-156 (2004), p. 1604 [4] J.N.

Experimental procedure Materials 304stainless steel was selected in this study, which always be used in the fields of chemical pump and valves and the high-strength parts.
Enhancement In order to improve the impact resistance of 304stainless steel, combining with depth and strain curve, the exponential gradient coating was chosen to add on the surface of raw materials.
Materials Stellite6 cobalt-base alloy powder contains W and Mo, which can improve wear resistance, corrosion resistance and impact resistance significantly.
Journal of Harbin Engineering University. 29(2008) 1190-1191
JOURNAL OF ZHONGYUAN UNIVERSITY OF TECHNOLOGY. 23(2012) 30-31

Sreekantan: International Journal of Materials, Mechanics and Manufacturing, Vol. 1 (2013), p.314
Lin: Materials Science and Engineering: A, Vol. 380 (2004),p. 67
Sreekantan: Advanced Materials Research Vol. 772 (2013), p 365
Mellott: Journal of Sol–Gel Science and Technology, Vol. 58 (2011), p. 277
Escribano: Journal of Materials Chemistry, Vol. 3 (1993), p. 1239

It is widely used for deposition and etching applications of metals, semiconductors and dielectric materials; single or compact layers [1].
Lichtenberg, Principles of plasma discharges and materials processing.
Applied surface science, 2001. 169: p. 508-511
Journal of Vacuum Science and Technology, 1978. 15(4): p. 1597-1600
Adachi, Thin film materials technology: sputtering of control compound materials. 2004: Springer

Experimental Materials.
Mansur: Biomedical Materials Vol. 2 (2007), p. 135
Mansur: Journal of Materials Science Vol. 43 (2008), p 510
Lima: Materials Chemistry and Physics Vol. 130 (2011), p. 84
In: Monographs in Oral Science H.M.

Generally, the addition value of fly ash in concrete is set restrictions on 10 to 25% of the total cementitious materials according to Mark [18], and approximately 15 to 25% of the total cementitious materials for structure application [19].
Malhotra, High-Volume Fly Ash System: Concrete Solution for Sustainable Development, Aci Materials Journal. 97 (2000) págs. 41-48
Li, Use of High Volumes of Fly Ash to Improve ECC Mechanical Properties and Material Greenness, Aci Materials Journal. 104 (2007) 620-628
Hossain, Effect of glass powder on sulfuric acid resistance of cementitious materials, Construction & Building Materials. 113 (2016) 163-173
Monteiro, Concrete: microstructure, properties, and materials, McGraw-Hill Professional. (1993).

Therefore, by using this measurement system, the electromagnetic parameters of microwave absorbing materials can be accurately characterized.
Thus, the test of electromagnetic parameters for a mixture of absorbing materials and permeable materials can be achieved easily.
Also it can be used to measure the electromagnetic parameters of absorbing materials.
Also it can be used to measure the electromagnetic parameters of absorbing materials.
Therefore, by using this testing system, the electromagnetic parameters of microwave absorbing materials can be accurately measured.