A cylindrical specimen of a cold-worked brass has a ductility (%EL) of 27%. If its cold-worked radius is 14 mm, what was its radius before deformation?

Initial radius of cylindrical specimen

ri = 15.46mm

Explanation:

Cw = [(A1 - A2)/A1] * 100% ...equation 1

Where CW = cold worked percentage gain  for( 27% EL) ductile

A2 = final area of cylindrical specimen = pai * r²

Where r = final radius of cylindrical specimen

So therefore expanding equation 1 will give

A1 * Cw = (100 * A1) - (100 * A2)

Cw = 18% from attached graph

A2 = area of cylindrical specimen after cold work = pai * 14² = 615.75mm²

So therefore

18A1 = 100A1 - (100 * 615.75)

-82A1 = -61575.22

A1 = 750.92mm²

So solving for initial radius from initial area of specimen

r1 = (A1/pai)^½

r1 = (750.92/pai)^½

r1= 15.46mm

answer:

the army does care about its soilders sir i think yout getting off on the wrong foot sir you need to respect our country were keeping the peole that want to d harm towards you out. so dont go saying we don't care cause we do

angvrswer:

vfg

grfhrtrhr:

j

h

j

jjj

jj

j

j

j

m

j

h

yjujuju

jujuhuyhyt

j

hy

h

gh

g

g

g

g

gg

t

gt

gt

g

g

g

g

g

ef

f

d

dd

d

d

dd

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

d

f

s

bv

fb

c

fd

f

bf

bgf

n

g

bgr

gbr

bgr

gtr

bgr

gb

gb

gbgbbg

b

bgg

bbg

bfg

s

dcwf

fdb

b

ggb

bg

b

d

fh

d

e

f

w

fh

cd

cr

r

h

f

ww

a

v

f

vf

tr

rfe

rr

g

gg

e

go

d

d

c

r

rv

ng

gtg

gegte

g

gf

gf

g

gff

gf

gf

g

g

g

f

ds

wd

dfg

h

gfdsax

cvfbgnh

jmhngf

dsaazxscvb

nmhgb

fvdcsxaz

zxcv

bghn

fd

gb

h