卷 3, 编号 13 (2015)

The article deals with the basic principles of testing metal structures by ultrasonic methods. The authors present a review of relevant modern devices. The directions of further development of equipment and methods of ultrasonic testing are considered.

The article studies the possibility of new insulating materials development. The study considers a modification of diatomite used as a filler in order to obtain vacuum panels. The optimal conditions of modification are specified.

The article deals with the problems of constructional and technological forming of spherical shells based on geodetic network. In this connection, several design and technological methods of constructing triangular spherical networks called "Traner" were investigated. The optimal criterion of the methods is the minimum number of standard sizes of structural components and the minimal number of dome components as well as pre-assembly and pre-tension capability.

The article considers the algorithm of determining the fractal dimension of deformation curves based on the index of length analysis in order to obtain the integral quantitative estimation of destruction of building composites under compression. The authors compare the method suggested with the algorithms of determining the Hurst exponent and fractal dimension by the method of squares. The study shows the advantage of the method based on determining of the fractal dimension on the index of length of deformation curves.

The article presents the test results of paint coating compositions based on acrylic binders, containing the local fillers of the Republic of Mordovia – diatomite and dolomite. The study showed the optimal compositions with high values of dry residue and spreading capacity of dried film.