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Experimental results show possibilities of polymer materials structure assessment.
Demand for nondestructive testing (NDT) of polymer composite materials have grown rapidly since their introduction.
Acknowledgments Research described in this paper was supported by the Russian Science Foundation, project no. 15–19–00096.
The methodology of determining acoustical structural noise of metal Machines, Technologies, Materials, 11 (2013) 40-43
Voronkova, Ultrasonic structural probing of products based on materials with a complex structure by analyzing the statistical characteristics of the structural noise, Russian Journal of Nondestructive Testing, (51) 6 (2015) 360–373

Machining technology and cutting regimes, as well as the material of the tool being used, all have a direct impact on the surface texture and consequently on the quality of the repair as a whole.
Machining technology and cutting regimes, as well as the tool’s material, have a direct impact on the 3-D surface roughness and consequently on the quality of the whole repair.
Originally the grinding device was designed for machining crankshaft crankpin journals.
Fig. 2 shows a marine diesel engine crankshaft journal surface measured with a Taylor Hobson 3-D stylus profiler.
Jiang, Advanced Techniques for Assessment Surface Topography, London, Kogan Page Science, 2003, ISBN 978-1903996119 [8] ISO/DIS 25178-2, Geometrical product specifications (GPS) - Surface texture: Areal - Part 2: Terms, definitions and surface texture parameters, www.iso.org [9] T.

Yang: Materials Science and Engineering, Vol.
Koss: Metallurgical and Materials Transactions, Vol.
Peter, N. comley: Journal of materials engineering and performance, Vol. 13-6(2004), p. 660-664
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(a) (b) Fig. 1 Typical crash event of an automibile (a) Before Impact (b) After Impact Materials and Methods Materials.
Foremost development in automotive applications is to employ lightweight materials such as aluminum.
The strength to weight ratio and material behavior of aluminum brand it more striking in the design of crash box structures than other high strength materials such as steel.
T, Characteristics of Inversion Tubes Under Axial Loading, Journal of Mechanical Engineering Sciences 14, 1972, pp. 370-381
K, and Velmurugan R, Axial Compression of Empty and Foam Filled Composite Conical Shells, Journal of Composite Materials 33, 1999, pp. 567-591

Aiming at the development of a novel grinding technology for the highly efficient machining of difficult to machine materials such as Ti-6Al-4V, an ultrasonic assisted pulsed electrochemical grinding (UAECG) method was proposed.
This is because grinding process commonly yields workpieces with good surface finish and high form/dimension accuracy even for difficult-to-machine materials in which the work materials are removed with extremely small and hard-brittle abrasive grains.
Wang, Titanium alloys and their machinability - a review, Journal of Materials Processing Technology, 68 (1997) 12
Poroś, Wear of cathode in abrasive electrochemical grinding of hardly machined materials, Journal of Materials Processing Technology, 149 (2004) 414-418
Joshi, Analysis of Electrolytic Flow Effects in Micro-Electrochemical Grinding, Journal of Manufacturing Science and Engineering, 135 (2013) 011012

Kim: Journal of magnetism and magnetic materials. 265 (2003) 357
Liao: Journal of Magnetism and Magnetic Materials. 247 (2002) 70.
Jung: Journal of Magnetism and Magnetic Materials. 242 (2002) 197
Uma: Materials Letters. 45(2000) 191
Kaczmar: Journal of Magnetism and Magnetic Materials. 43 (1996) 157

The nucleation of twinning in polycrystalline materials is determined by the stress concentration at a dislocation pile-up.
Harris, Journal of Mat.
Chen, et al.: Science, 2003. 300(5623): p. 1275-1277
Ankem: International Journal of Plasticity, 2009. 25(5): p. 881-900
Capolungo, et al.: Materials Science and Engineering A, 2009. 513-14: p. 42-51

Carbon fiber reinforced carbon composites are a family of materials which possess much of the properties of polymer composites and monolothic carbon materials[1,2].
New advancement of oxidation protective coatings for C/C composites: Journal of Aeronautical Materials.
Study on application of C/C composites: New Chemical Materials.
Research and development of sliding collecting current materials in modern railway transportation and related current carrier friction abrasion: Materials Review.
Study on tribological property of the strip materials with electric current[D]: Beijing: China Academy of Railway Sciences. (2001), p. 1-13 [7] Zhao Y.W.

With mesoporous materials, Al-SBA-15 as target, the effects of scatter slit, soller slit and receiving slit of Bruker D8 ADVANCE diffractometer on the small-angle diffraction pattern based on information, such as the background intensity, peak height, intensity and full width at half maximum, which provide the evidence for slits selection.
Introduction X-ray diffraction (XRD) analysis, first method to investigate the microstructure of a material, has been applied in physics, chemistry, earth science, materials science and so on.
Yang, The development and application of X-ray diffraction, Journal of Shanxi Normal University (Natural Science Edition). 21 (2007) 72-76
Liang, Powder diffraction method of crystal structure, first ed., Science press, Beijing, 2003
Tang, Study on Experimental Conditions of Small-angle X-ray Diffraction on Mesoporous Materials, Journal of Instrumental Analysis, 28 (2009) 365-367

The process of synthesizing polyurethane (PU) membranes typically involves linking together networks of polymers using organic materials like polyols and isocyanates.
The choice between organic and inorganic materials is contingent upon the specific requirements of the application and the intended characteristics of the PU membrane [2].
The composition of the materials employed in the synthesis procedure of the PU membrane plays a crucial role in governing the production of the hard and soft segments within the membrane structure.
Experimental The materials used were ĸ-carrageenan powder, di(2-ethylhexyl)phosphoric acid (D2EHPA) (Merck), acetone, and toluene diisocyanate (TDI) as a reagent in pro's quality analysis from Merck (Darmstadt, Germany).
Cardenas-Lopez, J.Lopez-Elias et al, Saudi Journal of Biological Sciences 28, 1401-1416 (2021)