【WO2020005359A1】SYSTEMFORVERIFICATIONOFTESTINGMACH

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(51)International Patent Classification:AO,AT,AU,AZ,BA,BB,BG,BH,BN,BR,BW,BY,BZ,
G01P3/64(2006.01)G01P3/50(2006.01)CA,CH,CL,CN,CO,CR,CU,CZ,DE,DJ,DK,DM,DO, G01P21/02(2006.01)DZ,EC,EE,EG,ES,FI,GB,GD,GE,GH,GM,GT,HN,
HR,HU,ID,IL,IN,IR,IS,JO,JP,KE,KG,KH,KN,KP, (21)International Application Number:
KR,KW,KZ,LA,LC,LK,LR,LS,LU,LY,MA,MD,ME,
PCT/US2019/026291
MG,MK,MN,MW,MX,MY,MZ,NA,NG,NI,NO,NZ, (22)International Filing Date:OM,PA,PE,PG,PH,PL,PT,QA,RO,RS,RU,RW,SA,
08April2019(08.04.2019)SC,SD,SE,SG,SK,SL,SM,ST,SV,SY,TH,TJ,TM,TN,
TR,TT,TZ,UA,UG,US,UZ,VC,VN,ZA,ZM,ZW. (25)Filing Language:English
(84)Designated States(unless otherwise indicated,for every (26)Publication Language:English kind o f regional protection available).ARIPO(BW,GH,
(30)Priority Data:GM,KE,LR,LS,MW,MZ,NA,RW,SD,SL,ST,SZ,TZ,
16/023,03629June2018(29.06.2018)US UG,ZM,ZW),Eurasian(AM,AZ,BY,KG,KZ,RU,TJ,
TM),European(AL,AT,BE,BG,CH,CY,CZ,DE,DK, (71)Applicant:ILLINOIS TOOL WORKS INC.[US/US];EE,ES,FI,FR,GB,GR,HR,HU,IE,IS,IT,LT,LU,LV,
155Harlem Avenue,Glenview,IL60025(US).MC,MK,MT,NL,NO,PL,PT,RO,RS,SE,SI,SK,SM, (72)Inventor;and TR),OAPI(BF,BJ,CF,CG,Cl,CM,GA,GN,GQ,GW, (71)Applicant(for US only):O'DONOVAN,James, C.KM,ML,MR,NE,SN,TD,TG).
[US/US];d o Illinois Tool works Inc.,155Harlem Avenue,
Glenview,IL60025(US).Published:
—with international search report(Art.21(3))
(74)Agent:BROWN,Ronald;McCarter&English,LLP,825
Eighth Avenue,New York,NY10019(US).
(81)Designated States(unless otherwise indicated,for every
kind o f national protection available):AE,AG,AL,AM,
(54)Title:SYSTEM FOR VERIFICATION OF TESTING MACHINE SPEED
(57)Abstract:The present disclosure relates to a system for verification of the speed of crosshead travel in a materials testing device.
A linear displacement device is mounted on the crosshead of the materials testing device.The linear displacement device measures the position and displacement of the crosshead during the test.A timer interval counter measures the time of travel of the crosshead during the test.This measurements allow for accurate calculation of the average speed of the crosshead travel,based on the difference between the position values divided by the elapsed time.
PCT APPLICATION
SYSTEM FOR VERIFICATION OF TESTING MACHINE SPEED
Applicant:Illinois Tool Works Inc.
BACKGROUND OF THE DISCLOSURE
[0001]This application claims priority under35U.S.C.§119(e)of U.S.Application serial no.16/023,036filed on June29,2018,the contents of which are hereby incorporated by reference in their entirety and for all purposes.
Field of the Disclosure
[0002]The present disclosure relates to a system for verification of the speed of crosshead travel in a materials testing device.
Description of the Prior Art
[0003]In the prior art,it is known that material testing,such as,bu no limited to stress/strain analysis pursuant to ASTM E2658,requires repeatable and predictable testing machine speed.The devices used for measurement of machine speed may be used for measurement of crosshead speed.The accuracy of the crosshead speed value is imperative for the accuracy of the materials testing results.
OBJECTS AND SUMMARY OF THE DISCLOSURE
[0004]It is therefore an object of the present disclosure to provide for improved calculation and verification of the speed of a crosshead in a materials testing device.
This and other objects are attained by verification of crosshead travel by measuring the distance the crosshead travels over a period of time.A time internal counter is used in combination with a。