Data on laboratory works on resistance of materials are provided, the assessment of errors of results of measurements and experiments is given, statistical processing of experimental data is in detail stated. The book contains information on nondestructive methods and control devices of characteristics and diagnostics of materials and designs. In a grant the International system of units (SI) (tab. 1 of the Appendix) is used, designations of sizes are accepted according to the international recommendations of ISO. Data on physicomechanical characteristics of steel, cast iron, non-ferrous metals, wood and polymers and the allowed tension for them are provided in tab. 2-8 of the Appendix. The grant is intended for the students studying courses of resistance of materials, mechanics of materials and designs, applied mechanics, construction mechanics and construction designs.
The article discusses an approach to describing cracks using machine learning algorithms to simplify the issuance of defective statements for the reconstruction object. The presented approach makes it possible to describe the geometric characteristics of concrete structures and their defects by sets of equations in order to subsequently find the main characteristics of defects and enter them into the defect lists.
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