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Influence of Sawdust Ash Addition on Molding Sand Properties and Quality of Iron Castings

Khuengpukheiw R., Veerapadungphol S., Kunla V., Saikaew Charn

Archives of Foundry Engineering

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2022

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Vol. 22, iss. 4

53--64

EN

Sand molding casting has been widely used for a long time. But, one of its main drawbacks is that surface quality of the castings is not good enough for some applications. The purposes of this research were to investigate the effect of addition of sawdust ash of rubber wood (SARW) on molding sand properties and the surface quality of iron castings and to find an appropriate level of SARW with the appropriate properties of the iron castings. The molding sand compositions for making a sand mold consisted of the recycled molding sand, bentonite, water and SARW. The percentage levels of SARW were 0%, 0.1%, 0.2%, 0.3% and 0.4%. The different proportions of molding sand samples were investigated for the molding sand properties including permeability, compression strength and hardness. The results showed that addition of SARW had an effect on the molding sand properties. The appropriate percentage proportion of molding sand was obtained at 95.8% recycled molding sand, 0.8% bentonite, 3% water and 0.4% SARW. There were statistically significant differences of mean surface roughness and hardness values of the iron castings made from molding sand samples without SARW addition and the appropriate percentage proportion of molding sand. In addition, the average surface roughness value of the iron castings made from the sand mold with the appropriate percentage proportion of molding sand was ~40% lower than those of the iron castings made from molding sand samples without SARW addition.

2

Modele serca 3d trenażera wybranych przezskórnych zabiegów kardiologicznych

Kalczyńska Katarzyna, Ligaj Bogdan

Postępy w Inżynierii Mechanicznej

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2019

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nr 14(7)

15--22

PL

W artykule omówiono budowę serca, trenażer do zabiegów przezskórnych na sercu oraz przykładowe modele serc opracowywanych w czasie projektowania i budowy trenażera. Zdefiniowano również niezbędne parametry modelu serca.

EN

The article discusses the construction of the heart, the trainer for percutaneous treatments on the heart and examples of hearts models developed at the time of designing and construction of the trainer. The necessary parameters of the heart model was defined.

3

Projective techniques for brand image dimensionality and using various techniques to investigate and improve the brand personality

Upadhyaya M.

Polish Journal of Management Studies

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2012

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Vol. 6

89-100

EN

This paper is an attempt to study the effectiveness of projective techniques in exploring the brand image of ego-sensitive brands, possessing minimal functional differentiation. The paper examines four finest perfume brands. Two metaphor based personification methods-mood-boards and job-sorting are employed to study the association that the participants have with the brands. Both the methods are open ended assignments to decipher how participants think or feel about the research object in question. The study analyses the congruent validity of the two methods and differences in their ability to personify the chosen brands of deu. Both the methods yielded almost similar outcomes, thereby reiterating that the two methods possess congruent validity. The latter part of the paper analyses the brand personality characteristics that were connected to the celebrities and jobs thus connected, as identified in the mood-boards and job-sorting exercise respectively. SWOCC Brand Personality Scale, which is a further elaboration of Aaker's brand personality research, was used to provide a list of the personality characteristics. The study however faces a limitation of the failure of the translation from the projective results into personality scores dimensions. This raises a serious concern if it is at all possible to validly translate overall projective data into analytical scores and if it is so then what would be the ideal procedure to do this.

PL

Niniejszy artykuł jest próbą zbadania skuteczności technik projekcyjnych w badaniu wizerunku marek tzw. wrażliwych, posiadających minimum funkcjonalnego zróżnicowania. Dokument ten bada cztery najlepsze marki perfum. Dwie metody, oparte na metodzie personifikacji i sortowania pracy, zostały wykorzystane do badania uczestników będących markami. Obie metody są jednostronnie otwarte w celu przypisania i rozszyfrowania jak uczestnicy myślą o badanym obiekcie lub jakie mają uczucia względem niego. Badanie analizuje zgodność tych dwóch metod i różnic w ich zdolności do uosabiania wybranych marek. Obie metody dały prawie podobne wyniki, tym samym potwierdzając, że obie metody posiadają istotną zgodność. Ostatnia część artykułu analizuje cechy osobowości marki, które są łączone z gwiazdami i miejscami pracy, identyfikowane z wykorzystaniem tablicy inspiracji i rodzaju pracy.