Publicação: Sistema de baixo custo para nucleação de pré-trincas por fadiga em corpos de prova de tenacidade à fratura
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Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
ABM, ABC, ABPol
Tipo
Artigo
Direito de acesso
Acesso aberto
Resumo
Fracture toughness testing becomes a very important parameter for mechanical design and maintenance of parts and structures. This work presents the design and construction of a machine device to perform the pre-crack nucleation on SE(B) specimens for fracture toughness testing. Employing this device, it is possible to test materials for K Ic, CTOD and J Ic in a conventional tensile test equipment, assisted by a data acquisition system. The device is based on the concept of loading from an eccentric mechanism, controlling the displacement by means of a marking ring. The main contribution of this work is the low cost technology offered for laboratories, without high priced servo-hydraulic testing machines, giving them autonomy for the execution of fracture toughness tests. The experimental results satisfied the expectation about crack nucleation on SE(B) and applied loading control.
Descrição
Palavras-chave
fracture toughness, fracture mechanic, mechanical testing
Idioma
Português
Como citar
Materials Research. São Carlos, SP, Brazil: ABM, ABC, ABPol, v. 4, n. 3, p. 205-209, 2001.
