On the possibility of using of small diameter pine round timber with defects in construction
Strength is assumed - index for materials which can take standard, calculated values. Significant dependence between bending resistance, absolute size of structural elements. The structure of the wood fibers - factor which determine timber quality.
Подобные документы
- 26. The influence mechanism of ferrite grain size on strength stress at the fatigue of low-carbon steel
The study of the properties of low carbon steel. Methods of cold plastic deformation. The rationale for the recommended annealing temperature. Is the microstructure of low-carbon metal. The study of the conditions of plastic deformation of ferrite.
статья, добавлен 29.01.2016 The study of magnetron sputtered coatings on base AlN-TiB2(TiSi2). The structural composition, morphology coated materials. Features amorphous-like coatings AlN-TiB2(TiSi2) after annealing and their impact on physical and mechanical properties changes.
статья, добавлен 30.07.2016The development of scientific and methodological bases of forming of structural and phase composition of alloys synthesized by the combined processes which consist of the metallothermic stage and SHS (self-propagating high-temperature synthesis).
статья, добавлен 07.09.2022This work is devoted to the decision of scientific and technical problems of the day, namely to the development of scientific and methodological bases of forming of structural and phase composition of alloys synthesized by the combined processes
статья, добавлен 20.09.2022Properties and structure of hydrocarbons. Types and communication aromatics. The nature of the relationship between the carbon atoms. The methods of extraction and processing of oil. The use of the rectification columns for fractionating of raw materials.
презентация, добавлен 30.06.2014New approaches to research and construction microbial producers of antibiotics. Nutrient mediums for biosynthesis. Oil refining, purification and quality control. Screening of libraries of synthetic compounds. Culturing producer strains broad spectrum.
курсовая работа, добавлен 18.04.2015- 32. Principles of calculation of piezoelectric elements with surfaces partial covering by electrodes
Description of stress-strain state and transfer characteristics of piezoelectric elements with partial surfaces electrogalvanism. The power method of the analysis of the physical condition of the piezoelectric elements in the mode of forced oscillations.
статья, добавлен 30.08.2016 The main advantages and disadvantages of well-known spiral drills with a multi-stage blade. It is described that the bridge, together with the steps adjacent to the grooves, is a small centering drill, performs centering and drilling during the process.
статья, добавлен 10.02.2021Analysis of a mathematical model to determine the transient modes of rotary kilns, drying drums and mills taking into account electromagnetic processes in the induction motor. Mechanical vibrations of the elements of the drive mechanism, long metal body.
статья, добавлен 14.09.2016- 35. Polyphenol composition and technological characteristics of the coloured whey from various origin
The purpose of this scientific work was to determine the polyphenolic composition and technological characteristics of colored whey of various origins, obtained by coagulation of milk proteins with traditional berry raw materials and wild herbs.
статья, добавлен 10.06.2022 Reduce costs and increase durability of threaded connections. The relationship between the thermal treatment and the strength of the threaded connection. Compare the minimum tightening hermetic threaded connections three types of anaerobic adhesives.
статья, добавлен 28.09.2016Increase in the use of hard, high strength and temperature resistant materials in engineering necessitated the development of machining techniques. Abrasive flow machining as process non-conventional machining processes. Magneto abrasive flow machining.
статья, добавлен 02.06.2014The investigation is focused on the evaluation of residual stresses resulting from cold deformation and welding in candidate target structural materials such as martensitic Alloys EP-823 and HT-9, and also an austenitic Type 304L stainless steel.
магистерская работа, добавлен 14.02.2013Investigation of adhesive compositions based on polychloroprene for the adhesion of rubber soles to the tips of the skin. Determination of the adhesion strength of the adhesive film when stretched as the hardener content of the adhesive is increased.
статья, добавлен 21.12.2016Characterization of features spline approximation television pictures. Rearranged algorithm spline approximation television images detailing calculation of the coefficients which gives the possibility to improve the quality of decompressing video.
статья, добавлен 26.06.2016The statement of basic materials. Engineering design has merit in continuous improvement of the basic parameters of the robot by applying newest outcomes of technology areas of mechanics, metallurgy, cybernetics to robot construction and control.
статья, добавлен 26.08.2020Theoretical study of the basic functioning of the starch industry. The raw materials used for the а production of polysaccharide under consideration. The structure of the modified starches and dextrin. The use of the ingredient as a food additive.
презентация, добавлен 27.10.2014The need to design new drilling equipment. The analyzed existing options for solving the problem solve it to some extent. To eliminate them, it is proposed to use elastic elements (ring springs) in the construction of double-shoulder tool joints.
статья, добавлен 02.03.2021The main stages of the automatic assembly of cylinder connection. The structural elements of the flexible automated production. Prospect for the automation of machine building production. The main types of heat exchange in technological systems.
контрольная работа, добавлен 05.04.2016The surfactants have been objects of studies all over the world. Development of approach to surfactants with controllable structure and properties based on the natural raw materials applicable for cosmetics production as dispersed systems stabilizers.
статья, добавлен 23.09.2016The present study is a mathematical modeling aimed at the dynamic force analysis of printed circuit boards in order to eliminate dynamic stresses to an acceptable level and ensure the strength and reliability of the printed circuit board design.
статья, добавлен 02.06.2022Establishing conditions for quality surface finish in grinding abrasive wheel. Determine the optimal mode grinding, allowing you to get the highest performance and lowest cost processing, providing the necessary tech-tech requirements for machine parts.
статья, добавлен 14.09.2016Polytetrafluoroethylene as one of the promising polymers for tribotechnical purposes. The use of polysulfonamide fiber to increase the wear resistance of polytetrafluoroethylene under conditions of friction without lubrication in reciprocating motion.
статья, добавлен 11.08.2021Розглянуто розроблення багатошарових захисних рідинних матеріалів для екранування електричних, магнітних та електромагнітних полів широкого частотного діапазону. Виготовлено серію рідких екрануючих сумішей на основі стандартних сертифікованих фарб.
статья, добавлен 31.01.2024Research process to ensure the values of the endurance limit of the material details. The establishment of correlations between the modes of machining, quality of the surface layer and the fatigue limit. The characteristics of processed material.
статья, добавлен 14.09.2016