NOPR Collection:

Flame retardant study of cotton coated with intumescents:Kinetics and effect of metal ions

Mon, 01 Jun 2009 00:00:00 GMT

Title: Flame retardant study of cotton coated with intumescents:Kinetics and effect of metal ions Authors: Dahiya, J B; Kumar, Krishan Abstract: Oxidative thermal degradation and flame retardant behaviour of cotton fabric coated with intumescent formulationscontaining nanoclay as well as metals (Cr, Cu and Zn) were studied by thermogravimetry (TG), differential thermal analysis(DTA) and limiting oxygen index (LOI). Activation energy of thermal degradation of cotton fabric and coated fabric samples wasdetermined by applying Coats-Redfern method on TG data. Action of intumescent was found concurrent with the process ofdecomposition of cotton fabric on heating. Activation energy of coated fabric with intumescent (165.8 kJ mol^–1) was foundlower than that of uncoated cotton fabric (226.5 kJ mol^–1), which further decreased on inclusion of metals in intumescentformulations (111-127 kJ mol^–1). Char yield for coated fabric with intumescent increased from zero to 11.9% at 600°C. LOIvalue for pure cotton fabric (18%) increased for intumescent-coated fabric (21.8%). Page(s): 548-554

Metal cutting process parameters modeling: an artificial intelligence approach

Mon, 01 Jun 2009 00:00:00 GMT

Title: Metal cutting process parameters modeling: an artificial intelligence approach Authors: Tanikic, Dejan; Manic, Miodrag; Radenkovic, Goran; Mancic, Dragan Abstract: This study presents metal cutting process’ parameters modeling (cutting temperature, cutting force, and quality of machinedsurface) using artificial neural networks, and hybrid, adaptive neuro-fuzzy systems. Proposed models can be used for metalcutting process optimization, increasing productivity and reducing manufacturing costs. Page(s): 530-539

Incorporating multi-delivery policy and quality assurance into economic productionlot size problem

Mon, 01 Jun 2009 00:00:00 GMT

Title: Incorporating multi-delivery policy and quality assurance into economic productionlot size problem Authors: Chiu, Yuan-Shyi Peter; Chiu, Singa Wang; Li, Chun-Yi; Ting, Chia-Kuan Abstract: This paper incorporates a multi-delivery policy and quality assurance into an imperfect economic production quantity(EPQ) model with scrap and rework. A portion of nonconforming items produced is considered to be scrap, while other isassumed to be repairable and is reworked in each cycle when regular production ends. Finished items can only be delivered tocustomers if whole lot is quality assured after rework. Fixed quantity multiple installments of finished batch are delivered byrequest to customers at a fixed interval of time. Expected integrated cost function per unit time is derived. A closed-form optimalbatch size solution to the problem is obtained. Two special cases are examined and a numerical example given to demonstratemodel’s practical usage. Page(s): 505-512

Composite laminates from jute caddies - an industrial waste

Mon, 01 Jun 2009 00:00:00 GMT

Title: Composite laminates from jute caddies - an industrial waste Authors: Ganguly, P K Abstract: This paper describes design and fabrication process of composite laminates from jute caddies as fibrous reinforcement tounsaturated polyester resin (UPR). Tested composite laminates are found suitable in furniture making, construction andautomobile industries, and railway coach building. Page(s): 560-562