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(a)
Interpretation:
The distance between the supports needs to be determined,if the flexural strength is 85 MPa. This is to be stated whether polymer will fracture or not.
Concept introduction:
In a four-point bending method, force is applied by using two points. Flexural modulus can be calculated by using the following formula:
Here,
L=length
F=Flexural force
b=width
h=thickness
y=distance covered by load/deflection
(b)
Interpretation:
The deflection at which bar breaks needs to be determined.
Concept introduction:
In a four-point bending method, force is applied by using two points. Flexural modulus can be calculated by using the following formula:
Here,
L=length
F=Flexural force
b=width
h=thickness
y=distance covered by load/deflection
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Essentials of Materials Science and Engineering, SI Edition
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