A study of inverse relaxation in some textile fibers

Nachane, R. P.; Hussain, G.F.S.; Patel, G. S.; Iyer, K. R. Krishna

doi:10.1002/app.1989.070380103

Cited by 21 publications

(8 citation statements)

References 3 publications

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“…Nachane et al9 studied the inverse stress relaxation and stress recovery behavior of cotton fibers and yarns and discussed the mechanism of inverse stress relaxation behavior. Similar studies were conducted by the above authors on cotton fibers and yarns, ramie, wool, poly(ethylene terephthalate), and viscose 10, 11. Some other studies also reported on the inverse stress relaxation of spun yarns of cotton, polyester, viscose, jute,12–14 and polypropylene 15.…”

Section: Introductionsupporting

confidence: 76%

Studies on Indian silk. II. Structure–property correlations

Sen

K²

2004

J of Applied Polymer Sci

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This second in a series of articles deals with studies on the structure and physical properties of five varieties of Indian silk: two mulberry (bivoltine and crossbreed) and three nonmulberry (tasar, muga, and eri). A detailed analysis of the microstructural parameters and mechanical properties was reported. Significant differences between and within the varieties with respect to microstructural parameters (crystallinity, density, birefringence, dichroic ratio, sonic modulus, etc.), as well as the effect of microstructural parameters on mechanical properties, were discussed. Some of the observations made on the inverse stress relaxation behavior of the different silk varieties were also reported. The extent of variation of these morphological parameters was found to correlate well with the mechanical properties.

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Section: Introductionsupporting

confidence: 76%

Studies on Indian silk. II. Structure–property correlations

Sen

K²

2004

J of Applied Polymer Sci

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“…The phenomenon of inverse relaxation has been studied by researchers (Bhuvanesh and Gupta 1995;Hussain and Nacbane 2001;Nachane and Hussain 2003;Nachane et al 2(X)3), but not tnuch work has been carried out for silk (Kothari et al 2001 ) though it will be tnore cmcial for silk fabric since neat and clean appearance is extremely important for high quality items.…”

Section: Introductionmentioning

confidence: 97%

Structure, Property, and Relaxation Behavior of Mulberry (Bombyx Mori) and Tasar (Antheraea Mylitta) Silk

Das¹

2008

Journal of Natural Fibers

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Mccbanical properties of fully deguiniiied filaments of nuilhcrry and tasar silk have been investigated and correlated with structure and m(irpht)!ogy. Tbe tensile behavior of niulbciry silk filament was different trom tasar, whicb demonstrated cbaractcristic yield point, lower modulus, and breaking extcnsit)n twice as bigb as tbat of mulberry. Stress relaxation and inverse relaxation/stress recovery were observed for botb varieties of silk. The tnagnitude of inverse relaxation increases with the increase in peak tension and reduction in retraction also observed with tbe decrease in peak tension. Tensile properties and relaxation bebavior were correlated with density, birefriengence, orientation index, and sonic mtxiulus.

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“…In studies focused on the time-dependent response of textile fibers, yarns, and threads, these regimes are conventionally called simple, mixed, and inverse relaxation (Nachane et al, 1986(Nachane et al, , 1989Manich and de Castellar, 1992;Vangheluwe, 1993;Nachane and Sundaram, 1995;Ajiki and Postle, 2003). Changes in shapes of creep curves are referred to as transition from simple to mixed to inverse creep (Patil and Nachane, 2009).…”

Section: Introductionmentioning

confidence: 99%

Time-dependent response of polypropylene after strain reversal

Drozdov

2010

International Journal of Solids and Structures

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a b s t r a c tObservations are reported in tensile relaxation tests on specimens subjected to stretching up to various maximum strains max followed by retraction to various minimum strains . Experimental data show that shapes of relaxation curves on pre-loaded samples are strongly affected by strain increment D = max À : (i) when D is small, stress monotonically decays with time, (ii) with an increase in D, the relaxation process becomes non-monotonic, and (iii) at relatively large increments D, stress grows with time. A two-phase constitutive model is derived for the viscoelastic and viscoplastic responses of semicrystalline polymers under arbitrary deformations with small strains. Adjustable parameters in the stress-strain relations are found by fitting the observations. Numerical simulation demonstrates that the model correctly describes the time-dependent behavior of polypropylene subjected to cyclic preloading in creep and relaxation tests.

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A study of inverse relaxation in some textile fibers

Cited by 21 publications

References 3 publications

Studies on Indian silk. II. Structure–property correlations

Studies on Indian silk. II. Structure–property correlations

Structure, Property, and Relaxation Behavior of Mulberry (Bombyx Mori) and Tasar (Antheraea Mylitta) Silk

Time-dependent response of polypropylene after strain reversal

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