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The results of numerical (in the COSMOS/M environment) and physical simulations of the processes of acoustic wave propagation in homogeneous linear, flat, and bulk bodies are presented. The characteristics of longitudinal waves as functions of the boundary conditions (rigid and hinged fix ation, interface between media) were obtained numerically. The waveguide properties of models near geometrical concentrators in the form of a hole and a crack were investigated under pulsed external actions. The fields of dynamic displacements and stresses were calculated.

1 2According to national standards [2] (as well as the international standard ISO 8402) quality is under stood as a set product properties that determine its suitability to meet specific needs in accordance with its purpose.The level of product quality refers to relative quality characteristics (or a generalized characteristic) compared with a set of benchmarks, such as characteristics of future models, counterparts and standards. A counterpart may be represented by a mass production sample of a device, which has the same operating principle, functional purpose, scale of production and conditions of use as that of the developed (assessed) product. Quantitative characteristics of one or more properties are called indicators of quality.The main methods of assessing quality level are the differential and the comprehensive method [3, 4]. The differential method for quality assessment is based on comparing product characteristics with corre sponding characteristics of a counterpart. Naturally, the validity of assessment depends on the correct choice of counterpart. A counterpart closest to the functional purpose is chosen. Quality assessment of developed products is based on comparing major groups of technical and operational parameters. The differential method deals with the ratio of comparable indicators Abstract-The methodology and scope of quality assessment for objects of any nature is covered by qualimetry-the science of measuring quality [1]. We have attempted to use the methods of qualime try to assess the quality of measuring instruments, such as pressure sensors (IPTs) produced by major domestic and foreign manufacturers

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