5 documents found, page 1 of 1
Influence of micro-textures on cutting insert heat dissipation
Rosas, José; Lopes, Hernani; Guimarães, Bruno; Piloto, Paulo A. G.; Miranda, Georgina; Silva, Filipe Samuel; Paiva, Olga C.Metal machining is one of the most important manufacturing processes in today’s production sector. The tools used in machining have been developed over the years to improve their performance, by reducing the cutting forces, the friction coefficient, and the heat generated during the cutting process. Several cooling systems have emerged as an effective way to remove the excessive heat generated from the chip-too...
Thermal behaviour of rebars and steel deck components of composite slabs under ...
Filho, Marcílio M. A.; Piloto, Paulo A. G.; Balsa, CarlosMost of the studies involving composite slabs under fire follow the standard fire scenario described by the ISO 834 curve, disregarding the cooling-phase. However, recent studies show that this phase is equally important, as it can lead to the collapse of the structure. Therefore, the present research carried out a parametric study, using numerical models, validated through experimental tests, to evaluate the t...
Influence of micro-textures on cutting insert heat dissipation
Rosas, José; Lopes, Hernani; Guimarães, Bruno; Piloto, Paulo A. G.; Miranda, Georgina; Silva, Filipe S.; Paiva, Olga C.Metal machining is one of the most important manufacturing processes in today’s production sector. The tools used in machining have been developed over the years to improve their performance, by reducing the cutting forces, the friction coefficient, and the heat generated during the cutting process. Several cooling systems have emerged as an effective way to remove the excessive heat generated from the chip-too...
The heat transfer modelling for bone metastatic lesion minimization using two d...
Oliveira, Vânia C. C.; Fonseca, Elza M M; Belinha, Jorge; Rua, Claúdia; Piloto, Paulo A. G.; Renato N., JorgeBone tumors grow when cells divide without any control, forming a tissue mass. Bone tumors could be benign or malignant, and primary or metastatic due to systemic cancer cells dissemination. They destroy bone and lead to pathological fractures. The main objective of this work is to study the thermal effect induced by the bone cement polymerization, in the bone metastatic tumor minimization. To assess the clinic...
Numerical thermal study in bone tumor lesion
Rua, Cláudia C.; Fonseca, Elza M M; Piloto, Paulo A. G.; Oliveira, Vânia C. C.; Belinha, Jorge; Jorge, R. Natal; Vasconcelos, José C.With the evolution of science and new diagnostic technologies, it was possible to observe a continuous improvement in the treatments in general and in the aid of the patients' quality of life. Malignant tumors can be primary or secondary (metastases), with abnormal growth of cells able to invade other types of tissues and organs through systemic dissemination. Sarcomas are rare primary malignancies formed from ...