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Презентация на тему Experimental study of physical properties of artificial materials for the development of valvular heart apparatus

OutlineBackgroundMaterialsMethodsResults and discussionConclusions
Experimental study of physical properties of artificial materials for the development of OutlineBackgroundMaterialsMethodsResults and discussionConclusions PericardiumNatural porcine tissueChemically treated by 0.6% glutaraldehyde Polytetrafluoroethylene (PTFE)Expanded – more porous and flexibleHydrophobic and chemically inert Blanking die Motorized test stand Pericardium tensile test ePTFE tensile test ResultsPericardiumE=1.52 MPaUTS=5.22 MPaElongation at breakpoint is 60.4%ePTFEE>15 MPaUTS=9.2÷11.3 MPaElongation at breakpoint is 8-14% ConclusionsThe elastic modulus of ePTFE samples is significantly higher than that in References Mendis S., Puska P., Norrving B. Global atlas on cardiovascular disease
Слайды презентации

Слайд 2 Outline
Background
Materials
Methods
Results and discussion
Conclusions

OutlineBackgroundMaterialsMethodsResults and discussionConclusions

Слайд 4 Pericardium
Natural porcine tissue
Chemically treated by 0.6% glutaraldehyde



PericardiumNatural porcine tissueChemically treated by 0.6% glutaraldehyde

Слайд 5 Polytetrafluoroethylene (PTFE)
Expanded – more porous and flexible
Hydrophobic and

Polytetrafluoroethylene (PTFE)Expanded – more porous and flexibleHydrophobic and chemically inert

chemically inert


Слайд 6 Blanking die

Blanking die

Слайд 7 Motorized test stand

Motorized test stand

Слайд 8 Pericardium tensile test

Pericardium tensile test

Слайд 9 ePTFE tensile test

ePTFE tensile test

Слайд 10 Results
Pericardium
E=1.52 MPa
UTS=5.22 MPa
Elongation at breakpoint is 60.4%

ePTFE
E>15 MPa
UTS=9.2÷11.3 MPa
Elongation at breakpoint is

ResultsPericardiumE=1.52 MPaUTS=5.22 MPaElongation at breakpoint is 60.4%ePTFEE>15 MPaUTS=9.2÷11.3 MPaElongation at breakpoint is 8-14%

8-14%


Слайд 11 Conclusions
The elastic modulus of ePTFE samples is significantly

ConclusionsThe elastic modulus of ePTFE samples is significantly higher than that

higher than that in pericardial samples
The form of stress-strain

curves of ePTFE depends on the stretching direction
The next step: enhancement of quality of ePTFE sheet
Test other polymeric materials


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