R. S. Agrawa, P. M. Padole, J. F. Agarwal
Measurement of force involved in compression of lint cotton on a mechanical baling press

Cost of processing of lint cotton is very high. In order to optimize this, designing a mechanical press for compressing lint cotton does decentralization of ginnery. This design is carried out after performing extensive experiments on waste cotton pressing machine. During this experimentation it is required to measure the various variables involved in the process. The work presented in this paper reports the experiments carried out and the method used to measure force required for compressing cotton using mechanical press.

B. Prabu, M. Mohanraj, J. Jayakumaran, G. Puruchotaman, D. Peroumal, A. Venkatraman
Design and fabrication of measurement RIG to measure the geometrical imperfections of thin cylindrical shells

It is well known that the buckling strength of thin cylinder shells are mainly depends upon geometrical imperfections present on the thin cylindrical shells induced during manufacturing process. Hence it is necessary to measure these geometrical imperfections accurately, to predict the buckling strength of the cylindrical shells accurately. Using CMM to measure the geometrical imperfections is more accurate but costlier and also measurement depends on the operator’s skill. To overcome this problems an imperfection measurement rig is developed Using this measured imperfections data best fit surface map is generated, which can be used for further analysis.

V. P. Darji ,P. H. Darji, K. Baba Pai
Quality testing and fracture mode estimation for welded pipes of grade 321 stainless steel

The enormous existing and promising technology have tailored the structural and fractural analysis with measuring means. Stainless steel pipes are welded using tungsten inert gas welding technique. In its very primary stage of preparation only weld bead is removed with bead fitted mills. Welded segments and pipes are also subjected to different heat treatment and mechanical operations. These pipes are used in precise applications in refineries and petrochemical plants where they bear ambient pressure/temperature conditions. Because of heat treatable condition requirement the steel is worked with austenitic phase condition. Stainless steels with γ phase has relatively high ductility, low yielding strength, high tensile strength with ease in fabrication and Ti makes the alloy good corrosion resistant. This may lead to corrosion of welded segments in ambient temperature conditions. Present work deals with the effect of weld gases, alloying element added (Titanium) on the strength and microstructure of the 321 type Stainless Steel. Apart from the benefits of TIG, hot-cracking susceptibility can be industrially exploited and HAZ is satisfactorily would be analyzed using ultrasonic testing. For the present work, we have limited our work up to the spectroscopic chemical analysis of the parent metal and weldment.

P. Sasikumar, G. Kannan, V. P. Vinay, A. Noorul Haq, V. Balasubramanian
Application of Quality Function Deployment for recycling of SLI batteries in reverse supply chain

Now a days remanufacturing / recycling has become renowned as a popular option in many reverse logistics settings. In remanufacturing / recycling, firms take back products at the end of their use, disassemble them to obtain components and reassemble these components into a “good as new” remanufactured product. Though the technical solutions for the recovery of products from waste materials become more and more available, it is often imperative to adopt the view point of an individual firm and ask whether it would be wise to engage in product recovery activities or not. In the context of rapidly changing perspectives in the field of reverse logistics, the solution of a great variety of engineering problems calls for innovative application of knowledge and requires logical thinking, analytical capability, reasoning and judgment. In this paper the environmental impact of recycled SLI (Starting, Lighting and Ignition) batteries are considered and used for the disposition of used SLI batteries with the help of reverse logistics. Based on an extensive literature review, it is proposed to use a methodology for applying Quality Function Deployment (QFD) for the development of a new reverse logistics network with the environmental analysis of used SLI batteries. This methodology will incorporate environmental aspects into QFD to handle the environmental and traditional product quality requirements simultaneously.

Sergey V. Muravyov
About reasonable number of rankings in preference profile when measuring quality

To plan the quality measuring in the form of consensus relation determination for the given m weak order relations (rankings) it is necessary to know a reasonable number of the rankings. If a ranking is produced by an expert then the number of rankings is equal to number of experts. It is proposed to estimate the expert number using simple probabilistic Bernoulli model, where m experts reveal defects (demerits) of an object. The model assumes that the more the number of an expert group participants, the less the probability of a new defect revealing. Based on this assumption, the probability decrease have been evaluated and graphically presented. The investigations allow to suppose that the number of rankings in preference profile can be from 4 to 10 for typical applications.