Application of ANOVA and AHP in assessing the quality of roving cotton-polyester siro yarn

Chakrabortty, Amit (author), Raian, Shahriar (author), Saha, Subrata Kumar (author), Hossen, Jamal (author)

Siro spinning, an evolution of ring spinning, optimizes parameters, such as roving strand distance and twist multiplier, thereby enhancing yarn quality according to numerous studies. Experts have differing opinions on the benefits of roving distances for yarn quality. However, the effect of roving distance on the roving blending technique in the ring frame has not been fully investigated. An integrated analysis of variance (ANOVA) and the analytical hierarchy process (AHP) based methodology are presented in this work to close the research gap between yarn quality attributes and roving strand distance in the context of roving blending. For this purpose, five yarn samples of 19.68 tex were developed using different roving distances, specifically 2 mm, 4 mm, 6 mm, 8 mm and 10 mm, within the drafting zone using a 50/50 cotton-polyester roving blending technique in a ring frame. Subsequently, the quality metrics of the yarn were studied, including variation concerning yarn mass (CV$_{vm}$%), the imperfection index (IPI$_Y$) value, hairiness (HI), the count strength product (CSP$_{LS}$) value, elongation at break (ε$_{br}$%) and the total quality index (TQI$_{YQ}$). The results revealed that yarn sample B, made using a distance of 4 mm, resulted in good yarn quality. An ANOVA demonstrated that roving distance had no significant effect on HI, ε$_{br}$% or TQI$_{YQ}$. However, AHP assisted in determining the ideal roving strand distance among various options. The study’s findings provide practical suggestions for determining the ideal roving strand distance for better blended yarn quality.

• Language: English
• Keywords: siro spinning, cotton-polyester roving blended yarn, analysis of variance, analytical hierarchy process
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: NTF - Faculty of Natural Sciences and Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2025
• Number of pages: Str. 177-193
• Numbering: Vol. 68, no. 2
• PID: 20.500.12556/RUL-176842
• UDC: 677
• ISSN on article: 0351-3386
• DOI: 10.14502/tekstilec.68.2025018
• COBISS.SI-ID: 262223619
• Publication date in RUL: 11.12.2025

Record is a part of a journal

• Title: Tekstilec : glasilo slovenskih tekstilcev
• Shortened title: Tekstilec
• Publisher: Zveza inženirjev in tehnikov tekstilcev, Splošno združenje tekstilne industrije, Zveza inženirjev in tehnikov tekstilcev, Splošno združenje tekstilne industrije, Društvo inženirjev in tehnikov tekstilcev, Univerza v Ljubljani, Naravoslovnotehniška fakulteta, Oddelek za tekstilstvo, Založba Univerze v Ljubljani
• ISSN: 0351-3386
• COBISS.SI-ID: 763396

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Title: Uporaba analize variance (ANOVA) in analitičnega hierarhičnega procesa (AHP) pri ocenjevanju kakovosti bombažno-poliestrske siropreje

Abstract

Številne raziskave so pokazale, da se pri siropredenju, ki je nadgradnja prstanskega predenja, z optimizacijo parametrov, kot sta razdalja med stenjema v raztezalni coni in faktor zasuka, lahko bistveno izboljša kakovost preje. Strokovna mnenja o vplivu razdalje med stenjema na kakovost preje so različna, vpliv te razdalje na učinkovitost mešanja obeh stenjev v prstanskem predilniku pa do sedaj še ni bil celovito raziskan. V tej raziskavi je predstavljena integrirana metodologija, ki temelji na analizi variance (ANOVA) in analitičnem hierarhičnem procesu (AHP), njen namen pa je bil zapolniti raziskovalno vrzel med atributi kakovosti preje in razdaljo med stenjema glede na mešanje stenjev pri predenju. Za ta namen je bilo izdelanih pet vzorcev preje z dolžinsko maso 19,68 tex pri različnih razdaljah med stenjema v raztezalni coni (2 mm, 4 mm, 6 mm, 8 mm in 10 mm) z uporabo mešanice bombaž/poliester v razmerju 50/50. Proučeni so bili izbrani kazalniki kakovosti preje: variacija mase preje (CVvm %), indeks nepopolnosti (IPIY), lasavost (HI), produkt finosti in trdnosti (CSPLS), raztezek pri pretrgu (Ebr %) in skupni indeks kakovosti (TQIYQ). Pokazalo se je, da je najboljšo kakovost dosegla preja vzorca B, izdelana pri razdalji med stenjema 4 mm. Analiza ANOVA je pokazala, da razdalja med stenjema ni imela statistično pomembnega vpliva na lasavost preje (HI), raztezek pri pretrgu (Ebr %) ali skupni indeks kakovosti (TQIYQ). Metoda AHP pa je omogočila določitev optimalne razdalje med stenjema med preizkušenimi možnostmi. Ugotovitve iz raziskave ponujajo praktične smernice za določanje optimalne razdalje med stenjema v raztezalni coni pri predenju, kar pripomore k izboljšanju kakovosti mešane bombažno-poliestrske siropreje.

• Keywords: predenje siro, analiza variance, ANOVA, analitični hierarhični proces, AHP, preja iz mešanice bombaža in poliestra