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Between Single and Ply Yarns Made Feom / ^ All-Cotton And

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Between Single and Ply Yarns Made Feom / ^ All-Cotton And A STUDY OF THE EELATIONSHIP OF TENSILE STEENGTH ^ BETWEEN SINGLE AND PLY YARNS MADE FEOM / ^ ALL-COTTON AND ALL-NYLON FIBEES A THESIS Presented to the Faculty of the Division of Graduate Studies Georgia Institute of Technology In Partial Fulfillment of the Eequirements for the Degree Master of Science in Textiles by Sidney Wheeler Williams, Jr, June 1952 246493 A STUDY OF THE EEIATIONSHIP OF TENSILE STEENGTH BETWEEN SINGLE AND PLY YARNS MADE FEOM ALL-COTTON AND ALL-NYLON FIBEES APPEOVEDi Dalie Approved by Chairman May, I^, l^^^ 11 TABLE OF CONTENTS Page ACKNOWLEDGEMENTS iii LIST OF TABLES iv LIST OF FIGURES ix SUMMAEY X CHAPTER I. INTRODUCTION 1 The Problem Definition of Terms Used Method of Attack II o THE PROCEDURE 6 Materials and Equipment Experimental Operations IIIo TESTS CONDUCTED 13 IVo RESULTS 15 Discussion of Results Conclusions APPENDIX kO BIBLIOGRAPHY 12^^ Ill ACKNOWLiDGEMElTS On the completion of this study I wish to express my sincere thanks to Professor Eo L« Hill for his suggestions and valUvable guidance in making this work possible» I also wish to express my thanks to Mr. John Duerst of the Clarke Thread Company, Austell, Georgia; to the Newnan Cotton Mills, Newnan, Georgia, and to the U.S. Navy, for their assistance on this problem. iv LIST OF TABLES Table Page 1. Operating Data for Saco-Lowell Long Draft Spinning Frame o,.»o»... o o. <> .. =.. <.. o.»o. o = o.... 0,00.0000..., 11 2o Operating Data for Whitin Model B Twister,,,,,,..,,.,,.,. 12 3. Example of Using the Weighted Average by Fitting a Straight Line Using the Method of Least Squares to the Count-Strength Products for Cotton Resultant Group Z-6,.,,».,.,.,»,,,,o,o,,,o..,. 19 k. Best Strength Indexes for Cotton and Nylon 30/2 Staple Yarn in TeruiB of the Twist Resultants of the Yarns o.,,.,o..,,,,.,,,..,,.,,.,,,,,.... 20 5, Cotton 30/2 Yarns Grouped by the Ratio of the Square of the Single Twist Multiple , Divided by the Ply Twist per Inch, o,. o, o o.,,..,.»,, <..,,,, 21 60 Cotton 30/2 Yarns Grouped by the Ratio of the Square of the Single Twist Multiple Divided by the Ply Twist per Inch,,,,o.,,..,..,...,...,o„ 22 7, Cotton 30/2 Yarns Grouped by the Ratio of the Square of the Single Twist Multiple Divided by the Ply Twist per Inch,,,.,«»o o-,,.,,.o.,..,.. 23 8, Cotton 30/2 Yarns Grouped by the Ratio of the Square of the Single Twist Multiple Divided by the Ply Twist per Inch o,.,.,.,...»....,o.o.,,, 2k 9, Nylon 30/2 Yarns Grouped by the Ratio of the Square of the Single Twist Multiple Divided by the Ply Twist per Inch,.,o...,...,,,,..,o,,,.= 25 10. Nylon 30/2 Yarns Grouped by the Ratio of the Square of the Single Twist Multiple Divided by the Ply Twist per Inch,, o. o,..,. ,0, ...,<> o,, o., 26 11o Nylon 30/2 Yarns Grouped by the Ratio of the Square of the Single Twist Multiple Divided by the Ply Twist per Incho, o, ,..<,,*,, o o, o. o o, ,0,, 27 Table Page 12, Nylon 30/2 Yarns Grouped by the Ratio of the Square of the Single Twist Multiple Divided by the Ply Twist per Inch.o»,»..»»..o o.o.c o.o o = o o 28 13o Nylon 30/2 Yarns Grouped by the Eatio of the Square of the Single Twist Multiple Divided by the Ply Twist per Inch. =.. o o o <> o.«o o o o o o». <. 0 o o o 29 ik. Nylon 30/2 Yarns Grouped by the Eatio of the Square of the Single Twist Multiple Divided by the Ply Twist per Incho . o»^.»o o o., o =.»... <> <. 0 o o 30 15o Comparison of the Eatio of the Square of the Single Twist Multiple Divided by the Ply Twist per Inch for Cotton 30/2 Yarns.0000.00.0000000= 31 160 Comparison of the Eatio of the Square of the Single Twist Multiple Divided by the Ply Twist per Inch for Nylon 30/2 Yarns 0,000.000.000.000. 32 17. Cotton 30/2 Yarn Single Strand Breaking Strengthsooooo.oo kO 180 Cotton 30/2 Yarn Single Strand Breaking Strengths.0.0.000 kl 19. Cotton 30/2 Yarn Single Strand Breaking Strengths „ o. o. 0 o o ^1-2 20. Cotton 30/2 Yarn Single Strand Breaking Strengths»o0ooooo ^3 2I0 Cotton 30/2 Yarn Single Strand Breaking Strengthsooo»oooo kk 22 o Cotton 30/2 Yarn Single Strand Breaking Strengths . „ o o»o o o i*-5 23. Cotton 30/2 Yarn Single Strand Breaking Strengths »...o o o. kS 2k. Cotton 30/2 Yarn Single Strand Breaking Strengths o»o.. o.. k'~[ 25o Cotton 30/2 Yarn Single Strand Breaking Strengths.00.o... kQ 260 Cotton 30/2 Yarn Single Strand Breaking Strengths.»o o..o o k9 27o Cotton 30/2 Yarn Single Strand Breaking Strengths 0.oo.ooc 50 280 Cotton 30/2 Yarn Single Strand Breaking Strengths00.00000 51 29. Cotton 30/2 Yarn Single Strand Breaking Strengths..ooooo. 52 3O0 Cotton 30/2 Yarn Single Strand Breaking Strengths ., „..... 53 3I0 Cotton 30/2 Yarn Single Strand Breaking Strengths»oooo«.. 5^ VI Table Page 32o Cotton 30/2 Yarn Single Strand Breaking Strengths 00000.000 55 33o Cotton 30/2 Yarn Single Strand Breaking Strengths.,o.oo»oo 56 3ko Cotton 30/2 Yarn Single Strand Breaking Strengths».0oooo«, 57 35o Cotton 30/2 Yarn Single Strand Breaking Strengths 0000.0000 58 360 Cotton 30/2 Yarn Single Strand Breaking Strengthsooo.ooo.. 59 37o Cotton 30/2 Yarn Single Strand Breaking Strengths»o o p = o o o o 60 380 Cotton 30/2 Yarn Single Strand Breaking Strengths o 0.o o o..o 6I 39o Cotton 30/2 Yarn Single Strand Breaking Strengths.oooooo0o 62 kOc Cotton 30/2 Yarn Single Strand Breaking Strengths 00.0.0.00 63 ii-lo Cotton 30/2 Yarn Single Strand Breaking Strengths o o o o o o o o. 6k 42o Cotton 30/2 Yarn Single Strand Breaking Strengths 000000000 65 ^3• Cotton 30/2 Yarn Single Strand Breaking Strengths 000.00.00 66 kka Cotton 30/2 Yarn Single Strand Breaking Strengthsoooo.oo«. 67 k^c Cotton 30/2 Yarn Single Strand Breaking Strengths 0.0000000 68 k6. Cotton 30/2 Yarn Single Strand Breaking Strengths oo0»»o.oo 69, k'Jo Cotton 30/2 Yarn Single Strand Breaking Strengths .000000.. 70 k&o Cotton 30/2 Yarn Single Strand Breaking Strengths 00000000. 71 49o Cotton 30/2 Yarn Single Strand Breaking Strengthsooo».oo»o 72 50o Cotton 30/2 Yarn Single Strand Breaking Strengths 0.00.0.00 73 51o Cotton 30/2 Yarn Single Strand Breaking Strengths o o o..o o.o 7^ 52o Cotton 30/2 Yarn Single Strand Breaking Strengths0000000.. 75 53o Cotton 30/2 Yarn Single Strand Breaking Strengths.0000,000 76 54 o Cotton 30/2 Yarn Single Strand Breaking Strengths 0,0000000 77 55o Cotton 30/2 Yarn Single Strand Breaking Strengthsoooo0.... 78 560 Cotton 30/2 Yarn Single Strand Breaking Strengthso.,.ooo.« 79 vii Table Page 57<, Cotton 30/2 Yarn Single Strand Breaking Strengths. o <>.,.. o. 80 580 Cotton 30/2 Yarn Single Strand Breaking Strengths»o»o 0»... 8I 59o Cotton 30/2 Yarn Single Strand Breaking Strengths o».»o.»»• 82 60o Cotton 30/2 Yarn Single Strand Breaking Strengths»c o o»o o.. 83 61 o Cotton 30/2 Yarn Single Strand Breaking Strengths <,«. o o = =»* 84 62o Cotton 30/2 Yarn Single Strand Breaking Strengths 00000000= 85 63o Cotton 30/2 Yarn Single Strand Breaking StrengthSo00oo»»oo 86 6ko Cotton 30/2 Yarn Single Strand Breaking Strengths 00,000... 87 65o Cotton 30/2 Yarn Single Strand Breaking Strengths,oooo«o»» 88 66^ Cotton 30/2 Yarn Single Strand Breaking Strengths...o.»,,, 89 67o Cotton 30/2 Yarn Single Strand Breaking Strengths,000oo,oo 90 68, Cotton 30/2 Yarn Single Strand Breaking Strengths , o o<, o.«o» 91 69,, Cotton 30/2 Yarn Single Strand Breaking Strengths .0,0,^0 0 <> 92 70o Cotton 30/2 Yarn Single Strand Breaking Strengths.00o..00, 93 71o Cotton 30/2 Yarn Single Strand Breaking Strengths,o,,,.»,. 9^ 72o Cotton 30/2 Yarn Single Strand Breaking Strengths.0.000.00 95. 73 o Cotton 30/2 Yarn Single Strand Breaking Strengths„„,..^ o.o 96 7^. Cotton 30/2 Yarn Single Strand Breaking Strengths.,.,..o 0. 97 75o Cotton 30/2 Yarn Single Strand Breaking Strengths,o.oo.oo. 98 760 Cotton 30/2 Yarn Single Strand Breaking Strengths.».o,.o,, 99 77o Cotton 30/2 Yarn Single Strand Breaking Strengths,,.,,.,,. 100 78« Cotton 30/2 Yarn Single Strand Breaking Strengths,.,,,..,, 101 79, Cotton 30/2 Yarn Single Strand Breaking Strengths,,,,,.,,. 102 80„ Cotton 30/2 Yarn Single Strand Breaking Strengths,..o,,o,, IO3 81o Cotton 30/2 Yarn Single Strand Breaking Strengths,o,0o,.., ICh Vlll Table Page 82o Cotton 30/2 Yarn Single Strand Breaking Strengths»<> <> o»,. o o o 105 83. Cotton 30/2 Yarn Single Strand Breaking Strengths.o o.,o o o o o IO6 8^. Cotton 30/2 Yarn Single Strand Breaking Strengths0,0.0.00.0 10? 85• Cotton 30/2 Yarn Single Strand Breaking Strengths.»...o c,.. IO8 860 Cotton 30/2 Yarn Single Strand Breaking Strengths..oo»oooo» 109 87. Cotton 30/2 Yarn Single Strand Breaking Strengths000.000000 110 88» Cotton 30/2 Yarn Single Strand Breaking Strengths 0000000.00 111 89o Cotton 30/2 Yarn Single Strand Breaking Strengths o..»o o.o.» 112 90. Cotton 30/2 Yarn Single Strand Breaking Strengths,.,.o 113 91.
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