Brookfield DV3T - IV.6 Running a Yield Test

Brookeld Engineering Labs., Inc. Page 53 Manual No. M13-167-A0415
IV.6 Running a Yield Test
AYieldTestisstartedbypressingtheRunbuttonontheCongureYieldTestscreen.WhenRun
ispressed,thedisplaywillchangetotheRunningYieldTestscreen(seeFigureIV-7).
Real Time Graph
Command Keys
Status Bar
Title Bar
Test Name
Measurement Data
Figure IV-7
TheRunningYieldTestscreenprovidesinformationonthecurrentmeasurementincluding:Delta
Torque,Torque,Stress,Strain,Temperature,andSpeed.
Delta Torqueisthedifferencebetweenthecurrent%Torquevalueandtheprevious%Torque
value.Asthesampleapproachesitsyieldpoint,theDeltaTorquepercentageshoulddecrease.
IftheTorqueReductionforthetestis100%,theyieldpointoccurswhenthe%decreasein
Torque=100.
TorqueisthedeectionoftheRheometertorquesensor.Itisdescribedaspercent(%)andhas
arangeof0–100%.TheDV3Twillprovidemeasurementresultswithinthestatedaccuracy
providedtheTorquereadingisbetween10and100%.Ifthetorquereadingfallsbelow10%the
labelsinthedataeldswillashtoindicateanerrorcondition.Brookelddoesnotrecommend
thatdatabecollectedbelow10%Torquehoweverdatacollectionisnotrestricted.
TIP:TorqueontheDV3Tisequivalenttothe%readingfromtheDV-IIIUltraandtheYR-1
Rheometer.
StressisthecalculatedstressbasedontheSpeed,Torque,andSpindle.
StrainistheApparentStrainplacedonthesample.TheApparentStrainistheangulardistance
thatthespindlerotatesinthesample.
TemperatureistheinputvaluefromaconnectedBrookeldtemperatureprobe.TheDV3Tis
providedwithaDVP-94Yprobethatcanbeinsertedintothetestsampleorawaterbath.The
Cone/PlateversionoftheDV3Tcanbeutilizedwithasamplecupthatincludesanembedded
temperatureprobe.SomeBrookeldaccessoriesincludetemperatureprobes(Thermosel)or