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1 Fracture Mechanics of Polymers B&R Ch. 16.1-16.3, Fried 4.4 Testing methods of mechanical properties Static Transient Impact Cyclical.

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Presentation on theme: "1 Fracture Mechanics of Polymers B&R Ch. 16.1-16.3, Fried 4.4 Testing methods of mechanical properties Static Transient Impact Cyclical."— Presentation transcript:

1 1 Fracture Mechanics of Polymers B&R Ch. 16.1-16.3, Fried 4.4 Testing methods of mechanical properties Static Transient Impact Cyclical

2 2 Static tensile testing Fixed Clamp Moving Clamp Extensometer

3 3 Stress-strain tensile testing stress-strain curves of typical polymeric materials. properties of common polymers

4 Viscoelasticity 4

5 Craze and Shear Banding 5 F F F Shear banding F

6 Poisson’s ratio 6

7 Cold drawing of semi-crystalline polymers 7

8 Brittle vs. ductile failure 8 Factors affecting failure -

9 Compression Shear 9 Static tensile testing Material subjected to uniform hydrostatic pressure Material subjected to shear stress

10 Transient Test: Creep  1  2  3 10

11 Transient Test: Stress relaxation 11  t   

12 Impact & fatigue testing 12 Charpy Test


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