We make a composite with an Al matrix (E = 70 GPa) and SiC particles (E,= 430 GPa). We add enough particles to give the composite a stiffness of at least 100 GPa. What is the maximum stiffness? A: E 100 GPa B: En 50 GPa C: Emax 200 GPa D: E 300 GPa RO

We make a composite with an Al matrix (E = 70 GPa) and SiC particles (E,= 430 GPa). We add enough particles to give the composite a stiffness of at least 100 GPa. What is the maximum stiffness? A: E 100 GPa B: En 50 GPa C: Emax 200 GPa D: E 300 GPa RO

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.

Question

We make a composite with an Al matrix (E = 70 GPa) and SiC particles (E, = 430 GPa).
We add enough particles to give the composite a stiffness of at least 100 GPa. What is the
maximum stiffness?
A: Ex
100 GPa
B: E
50 GPa
C: Emax
200 GPa
D: Em
300 GPa
C is the right answer

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