The reason for the strong bond between carbon fiber and epoxy matrix and the poor bond of silicon nitride fiber and silicon carbide matrix should be determined. Concept Introduction: The composition made up of carbons atoms is usually known as carbon fibers. The atomic structure of carbon fiber is similar to that of graphite. These fibers have a diameter of ( 5 − 10 ) micrometer. Properties of carbon fiber: Tensile strength is high Stiffness is high Low weight High tolerance temperature High chemical resistance Low thermal expansion Applications of carbon fiber: Motorsports Military appliances Aerospace engineering Civil constructions or engineering

Question

DU 1. Describe the operations of Q1, Q2 and LM566. 2. Describe the functions of VR1 and VR2. R6 lk R3 BRUD 3. If the input frequency is higher than the FSK frequency, does the FSK modulator operate normally? 0+12V R10 5.6k 6 10k VRI 500k U₁ LM566 3 VCO output 7 Digital input R₁ VR2 10k ww 1k Qi C945 C945 C5 I 0.1 uF C6 luF C₁ 0.01μ R2 10k ww R$ 100k C3 +12V 0.01μ R9 100k +12V 6 R710k Rs 100k 6 R4 100k P FSK output ww ww + www + 3 3 4 U U₂ 1000p -12V HA741 1000p-12V µА741 Fig. 13-2 FSK modulator CTS circuit.

Answer 1

Question

Chapter 17, Problem 17.46P

Interpretation Introduction

Interpretation:

The reason for the strong bond between carbon fiber and epoxy matrix and the poor bond of silicon nitride fiber and silicon carbide matrix should be determined.

Concept Introduction:

The composition made up of carbons atoms is usually known as carbon fibers. The atomic structure of carbon fiber is similar to that of graphite. These fibers have a diameter of (5−10) micrometer.

Properties of carbon fiber:

Tensile strength is high

Stiffness is high

Low weight

High tolerance temperature

High chemical resistance

Low thermal expansion

Applications of carbon fiber:

Motorsports

Military appliances

Aerospace engineering

Civil constructions or engineering

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DU 1. Describe the operations of Q1, Q2 and LM566. 2. Describe the functions of VR1 and VR2. R6 lk R3 BRUD 3. If the input frequency is higher than the FSK frequency, does the FSK modulator operate normally? 0+12V R10 5.6k 6 10k VRI 500k U₁ LM566 3 VCO output 7 Digital input R₁ VR2 10k ww 1k Qi C945 C945 C5 I 0.1 uF C6 luF C₁ 0.01μ R2 10k ww R$ 100k C3 +12V 0.01μ R9 100k +12V 6 R710k Rs 100k 6 R4 100k P FSK output ww ww + www + 3 3 4 U U₂ 1000p -12V HA741 1000p-12V µА741 Fig. 13-2 FSK modulator CTS circuit.

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