Stratified sampling applied to estimation of the volumetric fraction of alumina in cast metal matrix composites
Carregando...
Fontes externas
Fontes externas
Data
Autores
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
De Gruyter
Tipo
Artigo
Direito de acesso
Acesso aberto
Fontes externas
Fontes externas
Resumo
In this paper, we propose a statistic procedure for estimating theamount of alumina incorporated in aparticulated metal matrix compositesynthesized by the stir casting methodComposite specimens, consisting of A356AI alloy matrix material containing 5 wt°/o ofalumina particles, were prepared using thecompocast- ing technique. An intermediatetraversal section of each composite ingotwas stratified into 24 parts and thevolumetric fraction of alumina wasmeasured by image analysis at 279separate points to study the aluminadistribution in the material. Alumina particledistribution was observed to haveconsiderable heterogeneity. Thestratification technique employed in thisstudy permits an ideal trade-off between theaccuracy of the estimated alumina and therequired measurement labor. © CarlHanser Verlag, München.
Descrição
Palavras-chave
Idioma
Inglês
Citação
Praktische Metallographie/Practical Metallography, v. 46, n. 8, p. 408-423, 2009.
