fischer frs system

8/22/2019 Fischer FRS System

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FISCHER REINFORCEMENT SYSTEMH thngtngcngFischer


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FRS FischerReinforcementSystem

FRSCB FischerReinforcementSystem ConstructionBond

FRSCB H th ngtngcngFischer Keodnhxydng

FRSCS FischerReinforcementSystemCarbonFibreSheet

FRSCS H th ngtngc ngFischer T msicarbon


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Structuralfailure&deterioration

Need re air &

Maintenance !!!


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Therearemanydifferentwaysofstrengtheningastructure

(Crtnhiucchkhcnhau giacngktcu)

ExternalPostTensioning Timeconsumingandveryexpensive(Kosau Tnthigianvrt t)

Section enlar ement Mess and roblems with increase inselfweight

(M rngmtct Bn,lnxnvlmtngt trng)

subsequentcorrosion (ptmthp lmtngt trngvtothm nmn))

rere n orce po ymers g we g ,non errousan s mp e

toinstall (dngsipolymetngcng, nh,khngcthnhphnstvd lp t)


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However,wearegoingtofocusonFibreReinforcedPolymers(FRP)

(Tuynhinchngta i nmctiulSiPolymeTngCngSPTC) GFRP GlassFibreReinforcedPol mers SPTCTh tinh AFRP AramidReinforcedPolymers(SPTCAramid) CFRP CarbonFibreReinforcedPolymers(SPTCCacbon)

(Cng xemxetcccchkhcnhaumh thngnycth pdng)

WetLayupsystems resinisappliedonsite(H thngmt Prepregsystems resinisappliedoffsitebutmechanicallycured

insitu(X lh thngtrcKeox lbnngoicngtrngnhngx lc hctich)

Precured resinisappliedandcuredoffsiteandgluedintoplace(X ltrc keovx lc hcbnngoicngtrngvdntich)


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carbonglass aramid


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Glassfiber(Sithytinh)

1) Hightensileresistance(60%ofcarbon)

ng ocao cac on

2) Greatheatinsulator(Cchnhitcao)

3)

Lowmodulus

ofelasticity

(Mo

un

n

h i

thp)

Glass=Thytinh


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GlassFibre(Sithytinh) CoefficientofThermalExpansion=7x106 to11x106 /C

6 6

CTEConcrete(HSDNN)=7x106 to11x106 /C;CTESteel=7x10

6 to11x10

6 /C otsu c ent erencetoa ectt e on

(Khngcs tc ngkhc nktdnh)

Glassfibreisanelectricalinsulator(Sithytinhcch in)

Creepbehaviour(Tc ngt bin)at50yearsfu,50 =0.3fu,i(9( Glassfibrewilldegradeunderacidoralkaliattack

GlassFRPishighlyimpactresistant

(SPTCthytinhlloiscbncao)


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Aramide(aramid)

1) Hightensileresistance(Sckhngkocao)2) Highchemicalresistance(Chnghachtcao)

3) Resistancetoimpacts(kevlar)

(Chngmitc ng)4) Sensibilitytohumidity(Nhycmvi m)

aramid


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CoefficientofThermalExpansion=negativeieitshrinkswhenit

getshot(HSDNN=Congtmkhigpnhit) = ; =

6 to11x106 /C

Sufficientdifferencetoaffectthebond(Cs tc ngkhc ns k tdnh)

Aramidfibreisanelectricalinsulator(Aramidlchtcch in)

Cree behaviour Tc n t bin at50 earsf =0.47, ,

Aramidfibreisresistanttoacidoralkaliattack(Aramidlchtchngacidhocalkalintncng)

ram s g y mpac res s an

(Siaramidpolymetngcngcscbn)


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Carbonfiber(Sicacbon)

g rat o= s cao a g m

50times

greater

than

structural

steel!

(Lnhn50l nk tc uthp)

2) Greatchemicalresistance(Chnghachtcao)

3) Greatthermalandelectricalconductivity(Dnnhitvdn incao)

4) Lowresistancetonothing (Khngb h thpsckhng)

carbon


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CarbonFibre(Sicacbon) CoefficientofThermalExpansion(HSDNN)=0 = 6 6 = 6

11x106 /C

Notsufficientdifferencetoaffectthebondngc s c ng c n n

Carbonfibreisanelectricalconductorsoavoidcontactwithsteel(Sicacbonlchtdn innntrnhtipxcv p

Creepbehaviourat50yearsfu,50 =0.91fu,i Carbonfibreisresistanttoacidoralkaliattack

(Sicacbonkhngb acidvalkalintncng) CarbonFRPisnotimpactresistant


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Typesoffibersheets

CFRP Carbonfiberreinforcedpolymer

AFRP Aramidfiberreinforcedpolymer

GFRP Glassfiberreinforcedpolymer

Tensile Modulus of

Ductility

ratioDensity

(N/mm2) (N/mm2)

do

(%)

T trng

CFRP 4300-4900 230-240 1.9-2.1 1.8

AFRP 3200-3600 124-130 2.4 1.44GFRP 2400-3500 70-85 3.5-4.7 2.6

SelectionoffibersheetdependsontypeofworkandenvironmentSelectionoffibersheetdependsontypeofworkandenvironment

LLa

cha

chn

sn

si

no

ty

thui

no

ty

thuc

vo

tnh

chc

vo

tnh

cht

cng

vit

cng

vic

v

mi

trc

v

mi

trngng


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Comparisonoffibersheets

Sosnhccloisihem

ic

a

ch

adia

tivit

Bc

x

onduc

n

i

Elastic

n

hi

om

pre

pnn

Imp

act

c

n

Fi

re

h.

la

Saf

ety

Anton

ollu

tio

nh

i

lt y .

CF

P

A

RP

GFRP


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Preliminaryexperiments

Ccth nghimban u

Load and mid span deflection

1.20

Load and mid span deflection = Ti trng v vng gia nhp

0.80

1.00

s)

AFRP 2 layers(M C )

VF 2 layers(No M C )

C FRP 1 la er M C

0.60

Load

(ton

0.20

.

.

0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50

M id span deflection (m m )


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FibreReinforcedPolymers(FRP)

SaturatingResin(Keoboha) Epoxy,VinylesterorPolyester

Primer penetratestheconcretetoimprovethebond(Qutlplt thmnhpvobtng tngcngktdnh)

(Trt y Trtepoxylmnhnbmtbtng)

Adhesive toglueprecuredstripstotheconcrete(Dnhbm dnkeox lbongtrcbtng)

Protectivecoating toprotecttheFRPfromenvironmentalattack

Fibres Glass,AramidorCarbon

Commonproperties ct n c ung

AllFRPsystemsexhibitelasticbehaviouruntilsudden,brittle

failure(Ttc STCP nhitikhib phhoi tngt) Densityisintherangeof1200 2100kg/m3

Steeldensity=7850kg/m3 ;concretedensity=2400kg/m3

g

C.

(Tt

c

u

lm

vic

trong

khong

nhit

60

82

C.)


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Carbon Fibre Sheet

Filling(dc)

Warp(ngang)


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WEIGHTTrnglng

Measured(obng)ingr/m2


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TEXTURE=DT

Typesoftexture=Kiudt


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=

Fibre=Si Mortar=va


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PRINCIPLESOFOPERATION=Nguynlx dng

concrete

Debonding:

concrete

Betweenconcreteand

mortar

mortar

FRP

fiber


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=

c

p

delaminazionediestremit

intermedia(flessione)

irregolarit

(taglio)


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L g tse we g t,operat onscan e one nasma space,t econstruct onw notaffectnormaluseofhousing=Nh,cth x l ch chthp,khngnhhng

nvics dngnhbnhthng. Highstrengthen,Flexibleforbending,shearandclosedhoopreinforcement

(Cng cao,mmdod un,ctvungpcactthp)

Haveflexibility,thecomplexshapedcomponentscanbewrapped

(Mmdo,d baoph ccktcuchnhthphctp) Appliedtothesurfaceofvariouscomponents(beams,columns,ventilationtubes,

=, , , , ,tng)

Alkalineresistanceandcouldbeusedforchemicalcorrosionandharsh

mnvmitrngkhcnghit(bnthnnkhng chi)

Fabriccanreuse(Ch phmcth x dngli)

Fa r ccovere ormat on C p m ngp c p


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Littleimpactonrenovation=C m tch tc iti n

Longshelflife,longtimeforoperation=Tntilu,khaithcdilu

Allowmoistureenvironmentintheconstructionprocess(Chophpqutrnhxydngtrong iukinmitrngmt)

Substratecanbeconcretemasonrystructure,woodstructure

L nn c th l b tn kt cu x va kt cu

Creepresistanceunderpermanentload(Chngt binditcdngtitrngthngxuyn)

=

Thixotropyandsoluble,environmentally(Khngb hatannhhngmitrng)


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CarbonFiberusedforstrengthening

Thefirstconsiderationistoidentifyexactlywhichwastheconcreteormasonrynee sto estrengt ene = uti nx c n c n x c tc uxyhocbtngnocntngcng

Increasedtensileca acit isnormall resolvedb a l in stri sofcarbonfibertokeepcostsdown=Tngcngkh nng chukobngx dngSCTC gimgithnh

fiberwraparoundtheelementtobestrengthened=Tngkh nngchunn ihibctonb STCCquanhktcucntngcng

IncreaseinTensileCapacity

CompressionStressRetention


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Objective=M c tiuWhat is Fiber Sheet ? = FS l g?

-High tensile strength materials

-

Objective M c tiu-Use for strengthening the deteriorated structures-Dng gia cng kt cu hhng

High-rise buildings = Nng cao nh

Bridge structures = Kt cu

Concrete tunnel linings=Tuyn tunen b tng


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FischerCFRP Fischer use polyacrylonitrilebased carbon fiber sheet (PAN)

ions small tow fiber production, it is a high strength level I.when testin tensile stren th of fiber com osite materials isin accordance with the standard value C=0.99 confidencelevel and guaranteed rate of 0.95 to determine the

requirements = Fischer dng sn phm si ion nh, cng cao cp I khi th nghim, cng ko si vt liu tnghp theo tiu chun c tin cy C=0.90 v h s bo m0.95 xc nh yu cu

Fischer FRS

CB is made from modified epoxy adhesive. Thepremier is free, and saturating resin and adhesives arecommon bond. The safety testing meet requirements Agrade. Its adhesive shear strength values C=0.90 andguaranteed rate of 0.95 to determine the requirements =

Fischer FRSCB t keo dn exposy ci tin. Yu t u tinkhng hn ch , keo bo ha v k t dnh th theo yu c uchung. An ton th nghim t loi A. Cng kt dnhchng ct c gi tr C=0.90 v h s bo m 0.95 xc

n y u c u.


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A lications= d n

ur ace prepara on

Chun b b mt

ur ace rea men

Xl b mtt

pp y res n

Trt keo

Pasting CFRP sheet

Dn tm STCC

Apply top coat (if needed)

Trt ln tn nh (nu cn)

Apply resin


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Applications

Fibersheetcanbeusedforthefollowingapplicationsintheconstructionindustry.

TensileStrengtheningofconcretebeams,slabsandcolumns

Restraining

circular

concrete

columns

to

improve

the

compressive

s reng

Strengtheningofmasonrywalls

Stren thenin oftimbermembers

Strengtheningofsteelorcastironmembers


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CarbonFibreusedforstren thenin =Dn SC iacn

Strips are usually used to strengthen the softfit of ceiling slabs or for theunderside of bridges or beams. These strips can be applied to the surface orcountersun e ow t e concrete sur ace and e ave i e additionareinforcement = Gii thng dng tng cng cc bn sn hoc mt didm. Gii ny c th dng cho b mt ch lm di b mt b tng v dng

nh tng cng thm. ee s are usua y use o encase an s reng en ver ca e emen s suc asstructural columns or bridge piers and act like steel jackets to retain theconcrete and prevent cracking.= Tm thng dng cho tng cng cc kt cuthng ng nh ct hoc tr cu c tc dng nh o khoc gi cho b tng

.


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APPLICATION

1) Surfacecleaning(oil,dust,efflorescence);=Lmschbmt(du,vtbn,snsi)

2) Preparingofsurface(primer);=Chunb bmt(ch yu)

3) ApplicationoffirstlayerofFRSCB=X dnglpth nhtFRSCB

4) Applicationofsheet=Dngt msi

5)ApplicationofsecondlayerofFRSCB

=X dngl pth haiFRSCB


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APPLICATION

ECPRIMER Ch yudngEC HELP H tr bngFischerFRSCB ADHESIVENESS Ktdnh

.

Ch hngnh hn4mm,cth trttrctipbngFischerFRSCB

Irregularitybetween4and20mm.Mustbefilledwith FischerECPLASTER

Ch hngt 4 n20mm.PhitrtbngFischerECPLASTEREdgesmustberounded (Radius>20mm.)

G cnhphivotrn (Bnknh>20mm)


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APPLICATION

APPLICATIONWITHPAINTROLLER,BRUSHORSPATULAINTHE

Dngconln,bnchihocbaytrtdctheoccsi


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PLATEAPPLICATION=DNGTM

PLATESMUSTBEGLUEDWITHFISCHERECPLASTER

DISCONTINUITYMUSTBEAVOIDWITHASPECIFICPAINTROLLER


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ApplicationofFRP

Tension- Paste CFRP to the tension face of structures

Dn CFRP ln mt chu ko ca kt cu

- Tensile strength = Cng ko

- Wrap (Cun) CFRP around members toincrease the confining force (tng lc b)

- =ompress on


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- Paste CFRP to the member art that receivinShear=C t

shear force

- Shear strength


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Carbon fiber production 2006-2010

28000 t 45000 ton of carbon fiberincreasing 13% every year


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Applications in Construction

23%4%

9%

Elettrico6% Rivestimento

Infrastrutture

Sanitari

Isolamento

Architettura

28%19% Altro

Experimental tests = Th nghim thc nghim


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Experimentaltests=Thnghimthcnghim

Beam in bending = Dm b un


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Beaminbending=Dmb un

concreteC20/25preparedwithcarbonfibersheet

50

kN

30

40

failureload=53,16kN

10

20

e erence oa = ,

Factorofstrengthening>3

00 1 2 3 4 5

Compressive strength=Cng nn


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Compressivestrength=Cng nn

Compressive strength concrete column

10501120 11201200

600

800

1000

kN

380

200

400

0

reference Maeda D-70 FRS CB Sikadur 330

i l h hi


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Experimentresults=Ktqu thcnghimMC mechanism

Dn gi chc

Load-deflection behavior

Ti trng lm bin dng

Lo ad an d M id span deflec tion

0.70

0.80

0.90 A50.1 (M C )

A50.2 (No M C )

A50.3 (No M C )

0.10

0.20

0.30

0.40

0.50

0.60

L

oad

(tons)

plain concrete 100.0

0.00

0.00 1.00 2.00 3.00 4.00 5.00


15.6 42.0 24.2 21.0 27.0 16.5

Lo ad an d M id span de flec tion

0.60

0.70

0.80 B50.1 (M C )

B50.2 (M C )

B50.3 (M C )

plain concrete

0.10

0.20

0.30

0.40

0.50

Loa

d

(tons 100.0

.

0.00 1.00 2.00 3.00 4.00 5.00


34.5 24.5 29.0 17.0

Testmethodforbondpropertiesofcontinuousfibersheetto


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concrete(JSCEE5432000)

Phng

php

th

nghim

c

tnh

k t

dnh

cu t m

si

lin

tcvibtng

CFRP flexural strengthening


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CFRPflexuralstrengthening

ngsu tu ncaSTCCP

Reference: Koji Takeda, et.al.; Flexural behavior of

reinforced concrete beam strengthened with carbon

Reference: T. C. Triantafillou, N. Plevris;

Strengthening of RC beams with epoxy-boned

re s ee s = u n u n c a m

dng tm si cacbon.

re-compos e ma er a s = a c ng

Dm BTCT bng keo epoxy-si ct li-vt liu

tng hp

CFRP compressive strengthening


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CFRPcompressivestrengthening

ngsu tnncaSTCCP

Reference: J.G. Teng, J.F. Chen, S.T. Smith and L. Lam; Behavior and

strength of FRP-strengthened RC structures [2003]=Bi u thng sut

Ca STCP trong kt cu gia cng BTCT


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e sc ercar on erre n orcemen sys emo a ne reinforcementcommitteeletterinreply:Throughsecurityand


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Qualified index of the safet and suitabilit testin for resin FRS CB

PropertyFRS CB

RequirementClass A

RequirementClass B

Reference

Tensile strength (Mpa) 51,5 40 30

Test items

Tensile elastic modulus (Mpa) 2737 2500 1500

elongation (%) 1,5

GB / T 2568

oid

propert

1,5

Bending strength (Mpa) > 50 50 40 GB / T 2570

Compression strength (Mpa) 88,8 GB / T 2569

Characteristic steel-steel

Coll

ty

70

tension shear strength (Mpa),

Steel-steel uneven tearstrength (kN/m)

- 20 16 GJB 94

Steel-concrete tensile bond3,2 Annex DB

ond

pr

oper

max (2,5, 1,2 ftk)

99,6 GB / T 2793Un-volatile content (solid content) (%) 99

concre e co es on a ure

Technical data of carbon fiber, Toray

Sheet

Tensile

strength (Mpa)

Tensile elastic

modulus (Mpa)elongation (%)

density (g/cm) weight (g)

FRS CS 200 4900 230 000 2.1 1.8 213

FRS CS 300 4900 230 000 2.1 1.8 317

Installation=Lp t


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Installation Issues All damaged concrete must be resolved first=u tin sa h hng All existing corrosion must be arrested and treated = Ngng ngay cc

n mn v x l All cracks of >3mm must be filled usin a suitable hi h ressure

injection epoxy = Tt c vt nt trt y keo bng bm p lc cao Cold and/or wet surfaces must be avoided as they can cause problems

Trnh m t bmt v n c th pht sinh vn . ,

suitable epoxy putty system, ie FCS= x l h thng cn lm nhnbmt g gh trc khi dng loi keo ph hp, v d FSC.

Primer should be applied if the manufacturer of the system deems it

All fibres should be installed 5=Tt c cc si lp t ko chnh 5 Minimum radius at any corners should be 13mm (Half inch) Bn knh v trn cc gc ti thiu 13mm (na inch) For wet lay up systems, all applied fibred should be fully saturated

ch cn lm t h thng, tt c si phi bo ha nc Temporary protection of FRP system might be required during curing

Permanent protection systems might need to be appliedC th cn phi bo v thng xuyn h thng

Installation


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Installation

Quality Control inspection sheets should cover the following:

(Kim tra cht lng qua ghi chp cc khu sau y)

Date and Time of Installation = Ngy v gi lp t

Weather Conditions = Diu kin thi tit

Concrete Temperature = Nhit b tng Surface Dryness (test method described in ACI 503.4)

kh ro bmt (phng php th nghim m t trong ACI 503.4

Surface preparation method used = Phng php chun b bmt

Surface cleanliness = Lm sch bmt

Width of maximum untreated crack = B rng ti a vt nt ko x l Fibre/precured batch number = Sm si/x l

Batch number, mixing ratio, mixing times etc of all chemicals

Sm, t l trn, thi gian trn v.v. ca cc ha cht

Pull off test results bond strength, failure mode and locationRt ra cc kt qu th nghim cng dnh kt, v tr v cc kiuh hng

Delamination check to ensure max 13cm2 providing < 5% of total areais affected, but limited at 10 areas per m2 = Kim tra s bong trc

m bo ti

a 13cm2

< 5% tng din tch b tc

ng, nhng giihn 10 ch trong 1m2

FIBERS ORIENTATION HNG CA SI


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FIBERSORIENTATION=HNGCASI

FIBERSORIENTATIONISVERYIMPORTANT!!!

COLUMNREINFORCEMENT=GIACNGCT


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a ean meo ns a a on

WeatherConditions

ConcreteTemperature SurfaceDryness(testmethoddescribedinACI503.4)

Surfacepreparationmethodused

Widthofmaximumuntreatedcrack Fiber/precuredbatchnumber

Batchnumber,mixingratio,mixingtimesetcofallchemicals

Pullofftestresults bondstrength,failuremodeandlocation

2isaffected,butlimitedat10areasperm2

CONTROL ON APPLICATION = KiM TRA ViC P DNG


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CONTROLONAPPLICATION=KiMTRAViCPDNG

TESTSWITHSUPERSONICWAVES=THNGHIMVISNGSIUM

CONTROLONAPPLICATION


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SURFACETHERMOGRAPHY(INFRAREDRAYS)=Ki MTRANHI THCB M T(Tiah ngngoi)

Leprovepossonoessere:

1. Attive:quandosiintervienestimolandola

2. Passive:quandosiosservanovariazioniditemperaturaprodottedasorgentinaturali(cicligiorno/notte)oppuredaprocessi

fisicisemprepresenti(diffusioneedevaporazionedellacqua)

CONTROLONAPPLICATION


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SURFACETHERMOGRAPHY(INFRAREDRAYS)

fischer frs system

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