Textile Testing ,Reasons for Textile Testing,Different types of Textile Testing (on the basis of sample),Standardization B Of Testing,Variation caused by the test methodway to minimize the variability ,NATIONAL STANDARDS

1. TESTING
PART -1
MADE BY :- NITISH SHARMA

2. TESTING:
Beforeputtingsomethingintowidespreaduse,productionorpractice,
thequality,performance,reliabilityetc.arechecked.Itfindsouthowwell somethingworks.
Testingcan bedefinedas theprocessofdeterminingthepropertiesof differentkinds of
subsatnaces.
MADE BY :- NITISH SHARMA

3. REASONS FOR TEXTILETESTING:
• Checkingthe quality andsuitabilityofrawmaterialandselection ofmaterial.
• Monitoring of productioni.e.processcontrol.
• Assessmentof final product,whetherthequalityisacceptableor not,(howwill
betheyarnperformanceinweaving?etc).
• Investigationof faulty materials(analysisofcustomercomplaint,
identificationoffaultinmachineetc.).
• Productdevelopmentandresearch.
• Specification testing: Specifications are formed and the materials are tested to
prove whether they fall within the limits allowed in the specification (e.g.
specifiedbyacustomer).
MADE BY :- NITISH SHARMA

4. TYPESOFTESTING(ON THE BASIS OF SCHEDULE)
Therearemainlytwotypesof testing,
– oneisroutine processtesting
– anotherisquality recordtesting.
The result of routine process testing can be got quicklyintheworking
field.
Theresultofqualityrecordtestingistoberecorded fordifferentobjectstofinish
thework.
MADE BY :- NITISH SHARMA

5. DIFFERENTTYPESOFTEXTILETESTING
(ONTHEBASISOF SAMPLE)
FibreTests
• Fibretestsincludeidentificationoffibres,grading,fibre length,
strengthandelongation,fineness,maturityetc.
YarnTests
• Yarnstestsincludeyarncount,twistperunitlength,strength, appearance,evennessand
regularity,hairiness etc.
FabricTests
• Fabrictestsincludestrengthandelongation,width,thickness, numberofendsandpicks
per unit length, the count of yarn used, fabric weight per unit length, design and
constructionof thecloth, airpermeability,thermalproperties,stiffness,handle,drape,
creaseresistanceandrecovery,abrasion,pilling,shrinkage etc.
MADE BY :- NITISH SHARMA

6. STANDARDIZATIONB OF
TESTING
Whenatextilematerialistestedcertainthingsare expectedfromtheresults.
• If thetestresultsvaryfromlaboratorytolaboratory thenthetestisnotmeasuring
anythingrealanditis pointlesscarryingitout.
Explicit
• howthematerialwill performinservice
• it meetsitsspecification
Implicit
• It isreproducible
• thetestmeasuressome‘true’orcorrect value
ofthepropertybeingassessed
MADE BY :- NITISH SHARMA

7. THELACKOFREPRODUCIBILITYOFTESTRESULTSCAN
BEDUETOANUMBER OFCAUSES.
• Variation in thematerial
• Mosttextilematerialsarevariable.
The variation decreases as the production progresses from fibres to
yarnstofabrics
The problem of variable material can be dealt with the proper
selection of representative samples and the use of suitable statistical
methodstoanalysetheresults.
MADE BY :- NITISH SHARMA

8. • Variation causedbythe test method
• Theinfluenceoftheoperatoronthetestresults.
• Theinfluenceofspecimensizeonthetestresults.
• Thetemperatureandhumidityconditionsunderwhichthetestis carriedout.
• Thetypeandmakeofequipmentusedinthetest.
• Theconditionsunderwhichthetestiscarriedoutsuchasthespeed,pressureor
durationofanyofthefactors.
MADE BY :- NITISH SHARMA

9. TOMINIMIZETHEVARIABILITY:
•It isthereforenecessaryevenwithinasingleorganizationtolaydowntestproceduresthat
minimizeoperatorvariability
•Tosettheconditionsoftestandthedimensionsofthespecimen. Thedetailsintheprocedure
havetobesufficientsothatequipment fromdifferentmanufacturerswillproducethesame
resultsasoneanother
.
MADE BY :- NITISH SHARMA

10. • This need for standard written test methods leads to the setting up of NATIONAL
STANDARDS for testproceduressomakingeasierthebuyingand sellingof textileswithin
thatcountry.
• Evensocertainlargeorganisations,suchasMarks and Spencer,have producedtheirowntest
procedurestowhichsuppliershavetoconform if theywishtocarrythewoolmarklabelortosell
toMarksandSpencer.
• Mostcountrieshavetheirownstandardsorganisationsfor example:
BIS(India),BS(Britain),ASTM(USA)andDIN(Germany)standards.
MADE BY :- NITISH SHARMA