7/27/2019 SES - Failure Analysis

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]ky Egahur` Gbghysas9

Egahur`s Kgv` B`v`r F``b Nir` @xp`bsav`

G frio`b pap`, vghv` ir fiht cgb f` j`vgstgtabm ti

p`rsibb`h sge`ty, cibtabu`j s`rvac`, gbj ip`rgtabm

r`v`bu`. Aj`btaeyabm tk` riit cgus` ie tk` egahur`,wk`tk`r at as ju` ti ngbuegcturabm j`e`cts, ngab-

t`bgbc` prgctac`s, ip`rgtabm pgrgn`t`rs, ir as

j`samb r`hgt`j, ngo`s at pissafh` ti j`v`hip g

j`haf`rgt` phgb eir cirr`ctav` gctaib gbj gviaj

gbitk`r egahur` ab tk` eutur`. Gt Str`ss @bmab``rabm

S`rvac`s, (S@S) iur `bmab``rs kgv` tk` `jucgtaib,

`xp`ra`bc` gbj t`bgcaty

ti abv`stamgt` tk` egahur`,

eabj tk` cgus`s gbj

aj`btaey g sihutaib.

\ap`hab` Vuptur`

U`ss`h @xphisaibG 5-abck mraj ib tk` suregc` ie g

fuhm`j ghunabun phgt` eab k`gt

`xckgbm`r. Zk` mraj wgs us`j ti

suppirt g Eabat` @h`n`bt

Gbghysas nij`h.

G criss s`ctaib tkri umk tk` fuhm` j r` maib ie gb

ghunabun phgt` eab k`gt `xckgbm`r skiwabm tk`

s`pgrgtaib gt tk` hiw gbj kamk pr`ssur` pgssgm`

( r a m k t ) G sc gbba bm `h`ctrib nacriscip` (S@N)

angm` ie g nax`j nij` ergctur` ab st``h skiwabm

sin` janph`s tim`tk`r watk ch`gvgm` egc`ts.

G cgst ;-abck shajabm st` n vghv` fijy skiwabm g tkriumk wg hh crgco get`r at wgs

t`st`j usabm jy` p`b`trgbt.

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Sat` Absp`ctaib

Egahur abv`stamgtaibs iet`b f`mab ab tk` ea`hj. Ab hgrm`-

scgh` egahur`s, at ngy f` b`c`ssgry ti cgptur` tk` pkysacgh

hicgtaib ie tk` `quapn`bt gbj j`fras ea`hj watkiut jas-

turfabm tk` sc`b`.

S@S us`s gb `xt`bsav` abv`btiry ie tiihs gbj t`ckbaqu`s

abchujabm pkitimrgpky, tkr``-jan`bsaibgh hgs`r surv`y

gbj structur`j wkat` hamkt scgbbabm, ti `xtrgct ghh pissafh`

abeirngtaib watkiut jasturfabm `vaj`bc` gt tk` sc`b`. Ab

gjjataib, iur `bmab``rs gbj t`ckbacagbs kgv` sp`caghaz`j,

pirtgfh` n`tghhurmacgh surv`y `quapn`bt ti gss`ss tk`

ngt`raghs cibjataib.

Zk` sc`b` nust uhtangt`hy f` jasturf`j, gbj cinpib`bts

tkgt gr` susp`ct`j ie f`abm gssicagt`j watk tk` abatagtaib

ie egahur` gr` `xtrgct`j gbj niv`j ti g hgfirgtiry `bva-ribn`bt. S@S kgs g stgt`-ie-tk`-grt hgf j`vit`j ti

n`tghhurmacgh gbj ngt`raghs egahur` abv`stamgtaib.

Zk` cgus`s ie g egahur` gr` fura`j ab chu`s erin tk` egah`j

cinpib`bt. Ibc` ab tk` hgf, tk` abv`stamgtaib pric`ss

f`mabs watk g bib-j`structav` vasugh `xgnabgtaib gbj

jicun`btgtaib gbj primr`ss`s, gs b``j`j, ti abcr`gsabmhy

sipkastacgt`j gbj ramirius t`stabm n`tkijs.

Uasugh Gss`ssn`bt

Ifs`rvgtaib as fitk gb grt gbj g sca`bc`, gbj tk` f`st

egahur` gbghysts gr` j`t`ctav`s wki us` g vgra`ty ie soahhs

gbj primr`ssaib ie t`sts ti sihv` g cgs`. Ngby egahur`s

h`gv` ckgrgct`rastac sambgtur`s tkgt cgb f` ifs`rv`j

watk r`hgtav`hy hiw ngmbaeacgtaib, typacghhy h`ss tkgb 7

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Bib-J`structav` Z`stabm

]k`b vasugh gss`ssn`bt as bit sue-

eaca`bt, at ngy f` b`c`ssgry ti us`

itk`r bibj`structav` t`ckbaqu`s ticigx cratacgh chu`s erin tk` egahur`.

Zk`s` t`ckbaqu`s abchuj` rgjaimrg-

pky, ngmb`tac pgrtach`, jy`

p`b`trgbt gbj uhtrgsibac `vgh-

ugtaib. Zk` ckiac` ie bib-

j`structav` n`tkij as j`t`r-

nab`j fy tk` n`tghhurmacgh

gbj ngt`raghs `bmab``r fgs`j

ib tk` sp`caeac bgtur` ie tk`

egahur` ngt`ragh, gbj cinph`xa-

ty ie tk` cinpib`bt.

J`structav` Z`stabm

Ab tk` cgs` ie cinph`x egahur` n`ckgbasns, wk`r` bib-

j`structav` t`ckbaqu`s ji bit privaj` sueeaca`bt abeirng-

taib, n`tghhurmacgh gbj n`ckgbacgh t`stabm as b`c`ssgry ti

ubrgv`h tk` nyst`ry gbj aj`btaey tk` cgus` ie tk` egahur`.

N`tghhurmacgh t`stabm r`quar`s cuttabm tk` egah`j s`ctaib

erin tk` structur` abti nir` ngbgm`gfh` saz`s si tk` egah-

ur` gbj ngt`ragh ckgrgct`rastacs cgb f` va`w`j jar`cthy.

N`tghhimrgpky

Iet`b tk` earst j`structav` t`st as ti cut gbj pihask g sgn-

ph` si tk` nacristructur` ie tk` ngt`ragh cgb f` gss`ss`j.

Zk`s` nacristructur`s r`v`gh chu`s gfiut tk` ngt`raghs

iramabgh ngbuegcturabm pric`ss gbj privaj` chu`s ie ats

ip`rgtabm cibjataibs. Zk` skgp` gbj `xt`bt ie crgcos ir

cirrisaib cgb k`hp aj`btaey tk` cgus` ie tk` egahur`.

Ergctur`j \ap` ]`hj Zk`rngh Egtamu`

AJ crgcos gjdgc`bt ti r`pgar w`hjs S`h`ctav` \kgs` Gttgcou

Zkriumk wghh crgco ib vghv` fijy

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N`ckgbacgh Z`stabm

Ab gjjataib ti `vghugtabm tk`

structur ie tk` ngt`ragh,

tk` n`ckgbacgh prip`rta`s

ngy privaj` gb anpirtgbt

chu` gs ti tk` cgus` ie g

egahur`. Z`bsah` t`sts, ergc-

tur` tiumkb`ss, gbj Ckgrpyanpgct t`stabm cgb ghh pri-

vaj` abeirngtaib ib tk`

ngt`ragh pric`ssabm kastiry

gbj ats prip`rta`s up ti

tk` tan` ie egahur`. Zkas

n`ckgbacgh jgtg as us`j

ab cibc`rt watk itk`r t`st r`suhts ti k`hp j`t`rnab` tk`

cgus` ie tk` cinpib`bt egahur`.

@h`ctrib Nacriscipy

Sin`tan`s tk` cinph`t` `vghugtaib ie g egahur` r`quar s

nir` sipkastacgt`j n`tkijs ti sihv` tk` nyst`ry.

@h`ctrib nacriscipy us`s g scgbbabm `h`ctrib nacriscipy

(S@N) ti hiio gt tk` tipimrgpky ie g ergctur` suregc` gt

ngmbaeacgtaibs up ti 7