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Lenkiamų daugiasluoksnių konstrukcinių elementų projektavimoproceso modeliavimas / The Model for Design of Multi-layer Construction Elements Subjected by BendingPadaigienė, Regina 13 September 2004 (has links)
Multi-layer construction elements improve technical characteristics of the product. There is exhaustive analysis of software in this work. Besides that the model for design of multi-layer construction elements subjected by bending is created in this work. The purpose of this program is calculation of stiffness and stresses for multi-layer constructions subjected by cross forces and bending moments. Modeling the design process of multi-layer construction elements is simple task that can be automatized by creation of modeling system. This program allows to calculate stiffness and strength of multi-layer construction elements subjected by cross forces and bending moments. It is possible to design various constructions of beams changing different parameters. The programme itself is simple for every student, engineer.This model can be used for scientific research, engineering calculations, laboratorial calculations. The program allows to evaluate strength of multi-layer construction element subjected by bending. The construction will not hold out external load if intensity of stresses in one layer exceeds permissible stresses of strength limit of this layer material. The report is given in such case. The distribution of calculated stresses in cross-section of multi-layer construction elements can be shown graphically. It significantly facilitate designer’s work.
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Realaus laiko neardančiosios kontrolės signalų apdorojimo sistema / Real-time signal processing system for nondestructive testingKazanavičius, Vygintas 24 May 2005 (has links)
The employment of real time NDT systems has been spread widely last years. It is very important to control in real-time layer thicknesses of multi-layered materials during manufacturing process. In this work multi-layer thickness measurement digital signal processing methods are evaluated. Presented real-time nondestructive testing system and signal propagation model is a background for measurement algorithm analysis and development. In this work multi-layer thickness measurement problem is addressed with a different approach, by applying correlation functions on parts of the ultrasonic signal, thus reducing the overall computational complexity.
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