NOPR Collection:http://nopr.niscpr.res.in/handle/123456789/325842026-10-10T04:43:51Z2026-10-10T04:43:51ZSurface Damage to Fibres During Opening in a Rotor FrameSalhotra, K RChattopadhyay, Rhttp://nopr.niscpr.res.in/handle/123456789/329592016-07-20T06:24:33Z1985-12-01T00:00:00ZTitle: Surface Damage to Fibres During Opening in a Rotor Frame
Authors: Salhotra, K R; Chattopadhyay, R
Abstract: <span style="font-size:11.0pt;line-height:115%;
font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">The combing roller system
of fibre separation invariably causes a considerable damage and fibre breakage,
observed as minute cuts or bruises on the fibre surface fibre rupture being an
extreme case of such damage.</span>
Page(s): 193-1941985-12-01T00:00:00ZA New Method of Measuring Fibre Transfer In Needle-Punched FabricsSengupta, A KSinha, A KDebnath, C Rhttp://nopr.niscpr.res.in/handle/123456789/329582016-07-20T06:23:34Z1985-12-01T00:00:00ZTitle: A New Method of Measuring Fibre Transfer In Needle-Punched Fabrics
Authors: Sengupta, A K; Sinha, A K; Debnath, C R
Abstract: <span style="font-size:11.0pt;line-height:115%;
font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";color:black;mso-ansi-language:="" en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">A ratio recording
spectrophotometer was used to estimate the percentage of fibres transferred
during needling from the top to the bottom layer of a two-layer bolt<span style="font-size:11.0pt;line-height:115%;font-family:" calibri","sans-serif";="" mso-ascii-theme-font:minor-latin;mso-fareast-font-family:"times="" new="" roman";="" mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;="" mso-bidi-font-family:"times="" roman";color:#191919;mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">. <span style="font-size:11.0pt;line-height:115%;font-family:" calibri","sans-serif";="" mso-ascii-theme-font:minor-latin;mso-fareast-font-family:"times="" new="" roman";="" mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;="" mso-bidi-font-family:"times="" roman";color:black;mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">Th<span style="font-size:11.0pt;line-height:115%;font-family:" calibri","sans-serif";="" mso-ascii-theme-font:minor-latin;mso-fareast-font-family:"times="" new="" roman";="" mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;="" mso-bidi-font-family:"times="" roman";color:#191919;mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">e <span style="font-size:11.0pt;line-height:115%;font-family:" calibri","sans-serif";="" mso-ascii-theme-font:minor-latin;mso-fareast-font-family:"times="" new="" roman";="" mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;="" mso-bidi-font-family:"times="" roman";color:black;mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">method gives a fast and
reliable estimate of fibre transfer can b<span style="font-size:11.0pt;
line-height:115%;font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;="" mso-fareast-font-family:"times="" new="" roman";mso-fareast-theme-font:minor-fareast;="" mso-hansi-theme-font:minor-latin;mso-bidi-font-family:"times="" roman";="" color:#191919;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:="" ar-sa"="">e <span style="font-size:11.0pt;line-height:115%;font-family:
" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";color:black;mso-ansi-language:="" en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">used for Qualitative
assessment of needling efficiency.</span></span></span></span></span></span></span>
Page(s): 191-1921985-12-01T00:00:00ZEffect of Medullation on Mechanical Properties of Wool FibresRao, DramaChopra, S Khttp://nopr.niscpr.res.in/handle/123456789/329572016-07-20T06:21:14Z1985-12-01T00:00:00ZTitle: Effect of Medullation on Mechanical Properties of Wool Fibres
Authors: Rao, Drama; Chopra, S K
Abstract: <span style="font-size:11.0pt;line-height:115%;
font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";color:black;mso-ansi-language:="" en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">The effect of the
extent of medulla on stress-strain and torsional properties of single wool
fibres is reported<span style="font-size:11.0pt;line-height:115%;
font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";color:#3f3f3f;mso-ansi-language:="" en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">. <span style="font-size:11.0pt;line-height:115%;font-family:" calibri","sans-serif";="" mso-ascii-theme-font:minor-latin;mso-fareast-font-family:"times="" new="" roman";="" mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;="" mso-bidi-font-family:"times="" roman";color:black;mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">Medulla decreases stress at
all the strains<span style="font-size:11.0pt;line-height:115%;
font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";color:#1e1e1e;mso-ansi-language:="" en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">. <span style="font-size:11.0pt;line-height:115%;font-family:" calibri","sans-serif";="" mso-ascii-theme-font:minor-latin;mso-fareast-font-family:"times="" new="" roman";="" mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;="" mso-bidi-font-family:"times="" roman";color:black;mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">Swelling is less in
medullated fibres. Medulla has little effect on torsion at low strains; at high
shear strains the medulla collapses and the fibre fails at low twist<span style="font-size:11.0pt;line-height:115%;font-family:" calibri","sans-serif";="" mso-ascii-theme-font:minor-latin;mso-fareast-font-family:"times="" new="" roman";="" mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;="" mso-bidi-font-family:"times="" roman";color:#1e1e1e;mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">. <span style="font-size:11.0pt;line-height:115%;font-family:" calibri","sans-serif";="" mso-ascii-theme-font:minor-latin;mso-fareast-font-family:"times="" new="" roman";="" mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:minor-latin;="" mso-bidi-font-family:"times="" roman";color:black;mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">These differences in
mechanical properties are explained as due partly to the presence of medulla
and partly to the intrinsic changes in the keratin of these fibres.</span></span></span></span></span></span></span>
Page(s): 187-1901985-12-01T00:00:00ZBulk Torsional Rigidity of WoolRao, D Ramahttp://nopr.niscpr.res.in/handle/123456789/329562016-07-20T06:22:38Z1985-12-01T00:00:00ZTitle: Bulk Torsional Rigidity of Wool
Authors: Rao, D Rama
Abstract: <span style="font-size:11.0pt;line-height:115%;
font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">A simple torsion pendulum
method has been worked out for determining the torsional rigidity of wool
fibres in bulk form and for comparing the rigidities of various wools.
Medullation and variation in fineness distribution affect the rigidity, and
bundle test can resolve such differences also.</span>
Page(s): 183-1861985-12-01T00:00:00Z