Banca de DEFESA: EUGÊNIO TEIXEIRA DE CARVALHO FILHO

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : EUGÊNIO TEIXEIRA DE CARVALHO FILHO
DATE: 30/11/2020
TIME: 14:00
LOCAL: meet.google.com/uqd-uzve-agi
TITLE:

EXPERIMENTAL STUDY OF RESIDUAL STRESSES APPLIED TO SURFACES MACHINED IN MACHINERY ELEMENTS

KEY WORDS:

Residual Stress; X-ray diffractometry; Tribology; Contact mechanics.

PAGES: 81
BIG AREA: Engenharias
AREA: Engenharia Mecânica
SUMMARY:

This thesis is structured based on consolidated results and organized from five articles produced during the period of scientific investigation. Initially, an Interlaboratory study was carried out in order to understand the possible sources of measurement uncertainty and to create a methodology for reliable quantification by the X-ray diffraction technique using an Ishikawa diagram; going through an investigation on the influence of the mechanical properties of the materials and interferences that each phase acts on the measurements of the residual stresses in experiments with analysis of AISI 316L steel and duplex steel (austeno-ferritic); The thesis is not limited only to the development of the methodology but also to practical applications for assessing the tribological behavior of mechanical components and studies on better machining conditions. One of the studies evaluated the influence of turning conditions on residual stresses in AISI 1045 steel. Another article evaluated the effects of different grades of carbide coatings and lubrication cooling techniques on tool life and surface residual stress. milled HCWCI; Concluding with the comparative study of the evolution of wear associated with residual stresses in AISI 52100 and Carbon Steel steels tested in a cam follower system. The work emphasized the importance of a well-defined methodology for carrying out residual stress measurements as well as the relevance of measures in processes involving the wear of metallic components.

BANKING MEMBERS:
Interno - 1792669 - ADILSON JOSÉ DE OLIVEIRA
Interno - 096.211.994-68 - CLODOMIRO ALVES JUNIOR - UFRN
Externo à Instituição - DANIEL ARAÚJO DE MACEDO - UFPB
Presidente - 347080 - JOAO TELESFORO NOBREGA DE MEDEIROS
Externa à Instituição - JULIANA RICARDO DE SOUZA - IFRN
Externo à Instituição - LUIS GALLEGO MARTINEZ - IPEN