WHEN I DO END NOTCHED FLEXURAL TEST ON COMPOSITES LAMINATES I MUST DETERMINE THE G(II) [RELEASED ENERGY]. I USE THIS EQUATION:
G=(9*P^2*a^2)/(16*E*H^3*B^2)
WITH "a" CRACK DIMENSION.
WITH THE TOUGHENED EPOXY RESIN I MUST FIND THE G(II) GREATER THAN UNFILLED RESIN?
a SECOND QUESTION IN...
I WORK ABOUT SANDWICH COMPOSITES WITH WOVEN SKIN AND TWO DIFFERENT CORES IN THE MIDDLE OF THE STRUCTURE.
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SKIN |
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CORE1 |
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CORE2 |
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CORE1 |
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SKIN |
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I HAVE FOUND THE EQUATIONS ABOUT A SYSTEM WITH ONLY ONE CORE ON THE CENTER. I DON'T KNOW HOW I CAN...