Banca de DEFESA: LINSMAR JACO RIBEIRO MACEDO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : LINSMAR JACO RIBEIRO MACEDO
DATA : 14/11/2019
HORA: 08:00
LOCAL: Escola Politécnica
TÍTULO:

Determination of mechanical properties of API 5DP Tool Joint steel by miniaturized penetration testing: An application of the methodology proposed by the European Guide cwa 15627: 2007

PALAVRAS-CHAVES:

Mechanical Properties, Miniaturization, Toughness, API 5DP Tool Joint, Small Punch Test

PÁGINAS: 136
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Mecânica
SUBÁREA: Mecânica dos Sólidos
ESPECIALIDADE: Mecânica dos Corpos Sólidos, Elásticos e Plásticos
RESUMO:

Until the 1980s the widely used failure criterion for the design of structures and equipment was based on allowable stress. However, as more and more complex designs have been designed, catastrophic failures have begun to occur under lower stress conditions than the allowable stress, among other reasons with the presence of cracks. For the evaluation of the structural integrity of these elements with discontinuity, it is necessary to know the mechanical properties of the material. To quantify these values, tests are performed standardized by international standards, being the standard of the American Society for Testing and Materials used worldwide. These standards generally require large sample sizes, which makes it impractical to perform as the available material is in limited quantity or require repair after removal of the component under study. Alternatively to these conventional tests small sample size tests up to 1% of the volume of conventional tests have been developed. Among the techniques developed for this purpose, the Small Punch Test has been consolidated as a viable method for determining fracture and strength parameters for metallic materials. In this work the evaluation of the SPT method, based on guide CWA 15627: 2007, was performed for the mechanical characterization of the API 5DP Tool Joint steel. The yield stress with error of -0.1%, the maximum stress with error of -0.1% and the fracture toughness with error of -0.9% were compared to the results of the standard tests.

MEMBROS DA BANCA:
Presidente - 2196670 - ARMANDO SA RIBEIRO JUNIOR
Interno - 465.982.515-91 - GERALDO JOSÉ BELMONTE DOS SANTOS - LNCC
Externo à Instituição - RODRIGO ESTEVAM COELHO - IFBA
Externo à Instituição - MARIA DOROTÉIA COSTA SOBRAL - IFBA