Рентгенотомографическое исследование объемной доли пор в образцах из полимерных композиционных материалов. Сканирование и реконструкция томографических данных

2021 ◽  
pp. 45-53
Author(s):  
А.А. Демидов ◽  
О.А. Крупнина ◽  
Н.А. Михайлова ◽  
Е.И. Косарина
Keyword(s):  
Computed Tomography ◽  
Composite Materials ◽  
Image Reconstruction ◽  
Polymer Composite ◽  
Volume Fraction ◽  
Polymer Composite Materials ◽  
System Software ◽  
Applied Method ◽  
Ct System ◽  
Two Stages

The article presents results of performed computed-tomography research of samples from polymer composite materials in order to quantify a volume fraction of pores. Tomographic research includes two stages: scanning and image reconstruction. At the first stage, there is applied method of subpixel scanning, which raises resolution of the image. At image-reconstruction stage, there are applied corrections provided by the CT system software. Results of volume fraction of pores estimation, obtained by subpixel and single cylindrical scanning have shown their full convergence.

scholarly journals Studying the Mechanical Properties of Denture Base Materials Fabricated from Polymer Composite Materials

2018 ◽  
Vol 14 (3) ◽  
pp. 100-111 ◽  
Author(s):  
Jawad Kadhim Oleiwi ◽  
Qahtan Adnan Hamad
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Polymer Composite ◽  
Volume Fraction ◽  
Mechanical Tests ◽  
Polymer Composite Materials ◽  
Resin Matrix ◽  
Denture Base ◽  
Base Materials ◽  
Pmma Resin

In this research, the effect of adding two different types of reinforcing particles was investigated, which included: nano-zirconia (nano-ZrO2) particles and micro-lignin particles that were added with different volume fractions of 0.5%, 1%, 1.5% and 2% on the mechanical properties of polymer composite materials. They were prepared in this research, as a complete prosthesis and partial denture base materials was prepared, by using cold cure poly methyl methacrylate (PMMA) resin matrix. The composite specimens in this research consist of two groups according to the types of reinforced particles, were prepared by using casting methods, type (Hand Lay-Up) method. The first group consists of PMMA resin reinforced by (nano-ZrO2) particles, while the second group consists of PMMA resin reinforced by (micro-lignin) particles. The mechanical tests performed in this research includedtensile test, compression test, impact test and hardness test. The results of this study showed that the values of tensile modulus of elasticity, compressive strength and hardness properties increased with increasing the volume fraction of these particles in PMMA composite materials. While, the values of tensile strength, elongation and impact strength properties decreased. Also, the addition of (nano-ZrO2) particles showed greater effect than that of (micro-lignin) particles in some properties of PMMA composite materials for prosthesis denture base materials specimens, while they have lower effect for the other properties.

FSUE "VIAM" solvent-free binders for polymer composite materials

2016 ◽  
Vol 2 (2) ◽  
pp. 37-42 ◽  
Author(s):  
E. N. Kablov ◽  
L. V. Chursova ◽  
A. N. Babin ◽  
R. R. Mukhametov ◽  
N. N. Panina
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Solvent Free ◽  
Polymer Composite Materials

Aging of polymer composite materials under loading. (See Beginning in #10-2020)

2020 ◽  
pp. 2-12
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Polymer Composite ◽  
Polymer Composite Materials ◽  
Cyclic Loads ◽  
Reinforced Plastics ◽  
Water Exposure ◽  
Laboratory Conditions ◽  
Bending Loads ◽  
Moisture Conditions

A study review of aging polymer composite materials (PCM) under different heat-moisture conditions or water exposure with the sequential or parallel influence of static or cyclic loads in laboratory conditions is presented. The influence of tension and bending loads is compared. Conditions of the different load influence on parameters of carbon-reinforced plastics and glass-reinforced plastics are discussed. Equipment and units for climatic tests of PCM under loading are described. Simulation examples of indices of mechanical properties of PCM under the influence of environment and loads are shown.

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