Experimental Study of Upsetting and Die Forging with Controlled Impact
The results from experimental research of deformation by upsetting and die forging of lead specimens wit controlled impact are presented. Laboratory setup for conducting the investigations, which uses cold rocket engine operated with compressed air, is described. The results show that when using controlled impact is achieving greater plastic deformation and consumes less impact energy than at ordinary impact deformation process. Keywords—Rocket Engine, Forging Hammer, Sticking Impact, Plastic Deformation.
InterCriteria Decision Making Approach for Iron Powder Briquetting
In this paper, we present approach, called ‘InterCriteria Decision Making’ that utilizes the apparatus of index matrices and intuitionistic fuzzy sets which from an existing multiobject multicriteria evaluation table generates a new table that contains estimations of the pairwise relations among the set of evaluating criteria. In the presented paper for the analysis purposes we have used experimental results of impact briquetting of iron powder. In this study we illustrate the application of the one original methodology to the data achieved for the following parameters distance, speed and acceleration of the impacting bodies. The research and the obtained results will show relations between the briquetting process parameters which will lead to increase in its efficiency.
Chromatographic analysis of elastomer antidegradants and accelerators
Summary The use of various chromatographic methods in the analysis of all classes of elastomer antidegradants and accelerators is reviewed. The review of extraction methods is also included.