Wyniki wyszukiwania - BazTech

Ograniczanie wyników

2 Archives of Foundry Engineering

Powiadomienia systemowe

Sesja wygasła!

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: reinforcement phase

Sortuj według:

Ogranicz wyniki do:

Assessment of Reinforcement Phase Shape in MMC Using Decision Trees

Gawdzińska K., Pelczar M.

Archives of Foundry Engineering

2013

Vol. 13, iss. 2 spec.

39--42

This paper proposes a description of the reinforcement phase shape in MMCs by means of a decision, or classification tree analysis, recognized as a basic data mining technique. The material under examination was composed of reinforcement particles (SiC) in suspension composites with silumin matrix, made by mechanical stirring method. The use of decision tree method allowed to determine logic rules for the classification of particles to the category circle on the basis of its diameter and surface area, taking into account the division into three samples (depending on the location of the analyzed area in the casting space) and a reference sample (representative analysis area – of most desired shape in terms of composite quality - generated by simulation). To assess the accuracy of classification we used a redistribution indicator, that can be a measure used in describing the feature: homogeneity of reinforcement phase particle shape in the space of composite casting.

Relationships between the reinforcement properties and the crystallization of MMc

Jackowski J., Suchora M., Szweycer M.

Archives of Foundry Engineering

2008

Vol. 8, iss. 1

59-64

Occurrence of a reinforcing phase in a cooling composite casting causes that its crystallization goes differently as compared to the casting without reinforcing (of traditional design). This affects the forming process of the composite structure since the moment of mixing of the components until total solidification of the composite matrix. The present paper aims at presenting several problems related to crystallization of composite castings (particle reinforced and with saturated reinforcement) that have been the subjects of the research work performed by the team of the Foundry Section of the Poznań University of Technology. The review displays the spheres of the technology of composite casting materials that are well known and the ones that require more detailed research.