Constituent Materials 1 Laminate Plate Theory $100 $200 $300 $400 $500 Potpourri and Processing...

Constituent Materials 1

Laminate Plate Theory

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Composite Laminates

Constituent Materials 2

Final Jeopardy!!!

Category:

Composite Laminates

Final Jeopardy

List all of the “special laminate” categories for this composite (theta=45 deg).

What is ...

Final Jeopardy

• Balanced– A16= A26=0

• Symmetric– Bij=0

• Quasi-isotropic– [A] independent of orientation

Two of the three different common precursors for

carbon fibers

What are ...

Constituent Materials 1 For $100

2.Mesophase Pitch

3.RayonBack toGame

Kevlar is an example of this type of fiber

What is ...

Aramid Fiber

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Two general types of this material are: boron oxide

containing and boron oxide free

What is ...

E-glass

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There are two general types of this class of materials: cross-linked (formed by a

condensation polymerization) and thermoplastic (formed by an addition

polymerization)?

What are ...

Polyimide Resins

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This is the most widely used polymer in structural

composites

What is ...

Unsaturated Polyester Resin

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This is the basic chemical structure

of an epoxide group on all epoxy resins

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Three examples of mid- and/or high temperature

thermoplastic resins used in structural FRPs

What are ...

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This is coating that is applied to the surface of glass fibers to

prevent abrasion between fibers and to improve coupling with the

polymer matrix

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The polymerization of these resins is a result of the formation of triazine

rings through their –OCN functional groups.

What are ...

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Cyanate Esters

Identify the general structure below

What is ...

Bismaleimide Resin

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This diagram is a tool that can be helpful in describing the

isothermal curing process for thermosetting resins

What is

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Time-temperature transformation diagram

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What is ...

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The weight of the polymer in grams

extruded during a 10 minute test is this

(abbreviated MFI).

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Melt flow index

This is the relationship between and

What is ...

PotpourriFor $300

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Calculate the B-matrix for the following laminate (thickness of each ply is 1 mm,

and theta=45 deg).

What is ...

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Symmetric, so:

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List two common failure theories for a composite

lamina

What are ...

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1. Maximum Stress Theory2. Maximum Strain Theory3. Tsai-Wu Failure Theory

List the plyes in order from the tool for the following laminate

[50/±(0/30)/5]S

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Composite Laminates For $100

[50/±(0/30)/5]S

50, 0, 30, 0, -30, 5, -30, 0, 30, 0, 50

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A laminate where for every +θ ply there is another at -θ

What is ...

Balanced Laminate

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Pairs of layers of opposite orientation but the same material and thickness symmetrical w.r.t .middle surface of

laminate.

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Antisymmetric Laminate

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•Example: [+θ /- θ /+ θ /- θ]

A [0, 60, -60] lay-up is this type of laminate

What is ...

Quasi-isotropic

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What is ...

This picture is an example of …

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Shear-extension coupling

Results when 16 and 26 terms of Qbar matrix are nonzero

Definition for the principal material direction (1, 2, 3)

What is ...

Laminate Plate TheoryFor $100

1, 2, and 3 direction where 1 is the fiber direction, 2 is in plane

transverse and 3 is out of plane

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For plane stress (thin samples), these terms are zero in the equation below:

What is ...

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σ13= σ23= σ33=0

What are the values of z0 to z3 in the following laminate

What are ...

2mm thick

3mm thick1mm thick

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2mm thick

3mm thick1mm thick

z0=-3, z1=-1, z2=2, z3=3

Equations for ABD matrix

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These equations are odd functions

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Constituent Materials 1 Laminate Plate Theory $100 $200 $300 $400 $500 Potpourri and Processing...

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