4 documents found, page 1 of 1
Improvement of acquisition processes for highly perishable products by using le...
Navas, H.; Dias, A.S.M.E.; Morgado, Teresa; Abreu, A.; Anes, V.Ferreira, Ana Cristina, e outros (2023) - International conference on technology management and operations. - Lisboa : Universidade Lusíada Editora. - ISBN 978-898-640-273-0.; The high competitiveness of the fishing sector, combined with the economic and environmental crises, together with the search for customer satisfaction and for increasing the efficiency and effectiveness of internal processes, makes compa...
Crankshaft failure analysis of a boxer diesel motor
Fonte, M.; Anes, V.; Duarte, P.; Reis, L.; Freitas, M.This paper reports a failure mode analysis of a boxer diesel engine crankshaft. Crankshafts are components which experiment severe and complex dynamic loadings due to rotating bending combined with torsion on main journals and alternating bending on crankpins. High level stresses appear on critical areas like web fillets, as well as the effect of centrifugal forces and vibrations. Since the fatigue fracture nea...
On the assessment of fatigue life of marine diesel engine crankshafts
Fonte, M.; Duarte, P.; Anes, V.; Freitas, M.; Reis, L.The fatigue strength and its correct assessment play an important role in design and maintenance of marine crankshafts to obtain operational safety and reliability. Crankshafts are under alternating bending on crankpins and rotating bending combined with torsion on main journals, which mostly are responsible for fatigue failure. The commercial management success substantially depends on the main engine in servi...
New approach for analysis of complex multiaxial loading paths
Anes, V.; Reis, L.; Li, B.; Fonte, M.; Freitas, M.Experimentally, it has been proven that the stress level needed to cause fatigue failure in pure shear is less than the axial one. This fact has led to consider a stress scale factor between shear and axial stress in order to reduce different applied stresses to the same shear stress space or principal stress space to facilitate the yielding analysis or fatigue damage evaluations. In this way most of multiaxial...