http://nopr.niscair.res.in/handle/123456789/291 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/436 Title: Complex estimation of woven fabrics bending ability <br/> <br/>Authors: Mihailovic, Tatjana; Asanovic, Koviljka; Mihajlidi, Tatjana <br/> <br/>Abstract: The bending ability of cotton, wool and viscose woven fabrics under the action of their own weight has been examined using the direct indicators by cantilever method, and indirect indicators by disc method. The results obtained by the usage of direct and indirect indicators are found to be sensitive to raw material as well as constructional characteristics of woven fabrics. Values of direct as well as indirect indicators can be used for establishing the complex estimation of fabrics bending ability. It is found that the viscose fabric has the best bending ability and cotton (1) the poorest. <br/> <br/>Page(s): 453-458 http://nopr.niscair.res.in/handle/123456789/435 Title: Air flow behaviour in commingling nozzles and their influence on properties of commingled yarns <br/> <br/>Authors: Alagirusamy, R; Ogale, Vinayak; Bhowmick, Manick <br/> <br/>Abstract: Two types of commingling nozzles have been used to study the air flow behaviour inside the nozzle and their effects on commingling performance of glass/nylon yarns. The air flow behaviour has been analysed with computational fluid dynamics software FLUENT 6.1 and actual air flow velocities are calculated using measured air pressure. It is observed that there is a good correlation between the simulation and the measured air flow pattern. The air flow pattern in the Nozzle-1 configuration shows more turbulent zones than that in Nozzle-2. The commingled yarn properties also clearly indicate that the effectiveness of commingling is much better with Nozzle-1 configuration than that with Nozzle-2 configuration. <br/> <br/>Page(s): 414-420 http://nopr.niscair.res.in/handle/123456789/431 Title: Microwave absorption properties of carbon fibre containing nonwovens <br/> <br/>Authors: Zhu, Hua <br/> <br/>Abstract: A variety of nonwoven containing different weight percentages of pitch-based carbon fibre has been developed using through-air thermal bonding process or the spray bonding process and studied for its microwave absorbing capacity in the microwave frequency range 8 - 18GHz. Microwave reflectivity of the nonwoven is found closely related to the carbon fibre content. Electromagnetic parameters of the component fibres in the nonwoven have also been studied. Variation in microwave absorbing capacity of the nonwoven with the carbon fibre content is expounded according to the relationship between the electromagnetic parameters and the reflection coefficient of the nonwoven, as well as the relationship between the electromagnetic parameters and the attenuation constant of the nonwoven. The carbon fibre containing nonwoven has great potential in the military application as the radar camouflage material or in the non-defense application as the electromagnetic shielding material. <br/> <br/>Page(s): 391-398 http://nopr.niscair.res.in/handle/123456789/338 Title: Study on crosslinked dyed jute carpet pile yarns <br/> <br/>Authors: Rahman, S M Badier; Uddin, Md Kamal; Sayeed, M M Alamgir; Samad, Md Abdus <br/> <br/>Abstract: Jute carpet pile yarns have been treated with Indosol E-50 powder, dyes and magnesium chloride hexahydrate (MgCl₂.6H₂O) catalyst, and both treated (crosslinked dyed) and untreated yarns are used to prepare jute carpets in a mill. Several carpet parameters, such as thickness recovery, compression recovery, work of recovery, tuft withdrawal force and moisture content, of the treated carpet samples have been studied and compared with those of the untreated carpet of the same pile hight. The results show improvement in the performance characteristics of the crosslinked dyed jute carpet. <br/> <br/>Page(s): 477-480