Proposed Midterm Exam Equation Sheet Fall 2014

Equations and Conversion Factors

N=2n−1

Acircle=π4d 2

σ=FA

σ= 2Pπ d t

V sphere=π d 3

6

V cylinder=π4d 2h

ρ=mV

or γ=WV

DP=MW polymer

MW monomer

ε=L f−LoLo

=Δ LLo

E= σε

τ= T

2 πr 2 t

γ= rϕl

G= τγ

Cold working TTm

<0.3

Warm working 0.3< TT m

<0.6

Hot workingTT m

>0.6

1 Pa = N

m2

1in. = 25.4 mm

1in. = 1000 mils

1 kip = 1000 pounds

1ksi = 1 kipin.2

1psi = 1 lb.in.2

°R = °F+460K = °C+273

π rad = 180 °

Lab #2: Torsion Test

θ= T LJ G

where J=π d 4

32

MORT=T d2 J

Metric prefxes

n = nano- = 10−9

μ = micro- = 10−6

m = milli- = 10−3

c = centi- = 10−2

k = kilo- = 103

M = mega- = 106

G = giga- = 109

T = tera- = 1012

Proposed Midterm Exam Equation Sheet Fall 2014

Some topics covered on previous midterm exams*

Calculate atoms per unit cellCalculate corrosion rateCalculate ceramic disk test valuesCalculate DP (degree of polymerization)Calculate E/stress/strain relationshipsCalculate grain sizeCalculate grains per unit volumeCalculate torsion-G relationshipCompare cast iron properties with graphite shapesCompare grain size and strengthCompare hardness testsConvert Brinell diameter to hardness using a tableDefine mechanical and physical propertiesDescribe Dunlop's contribution to rubber industryDiscuss case hardening methodsDiscuss methods to prevent cavitationDiscuss methods to prevent galvanic corrosionDiscuss glass transition temperature

Discuss leaded vs. lead-free brassDiscuss properties of ceramicsDiscuss properties that change with heat treatDiscuss reasons for materials testingDiscuss short range / long range orderExplain eutectic/eutectoid/liquidus/solidusExplain how bimetallic strips workExplain how to harden or soften steelExplain how to make coarse/fine pearliteExplain how to make grains biggerExplain how to make martensite/prevent martensiteExplain how to prevent corrosion at stainless weldsExplain why hardness can varyExplain why steel is so widely usedPlot hardness vs. distance for a case-hardened steelRead/draw/interpret phase diagramsRead/draw/interpret isothermal transformation diagrams

* This is not a complete list. Questions will come from the assigned reading, lectures, labs, and homework.