HIGHLY RESPONSIVE AND ACCURATE TEMPERATURE MEASUREMENTS IN ORTHOGONAL CUTTING THROUGH INNOVATIVE SINGLE LEG THERMOCOUPLE

Autor:	F. Rossi, I. Hamm, Gérard Poulachon, F. Labarthe, H. Birembaux, Bertrand Marcon, N. Maury, S. Valadon
Rok vydání:	2021
Předmět:	Temperature measurement Materials science Mécanique: Thermique [Sciences de l'ingénieur] Thermocouple Mechanical Engineering Acoustics Automotive Engineering Ti-6Al-4V Heating rate Electrical and Electronic Engineering Orthogonal cutting Industrial and Manufacturing Engineering
Zdroj:	MM Science Journal. 2021:4660-4666
ISSN:	1805-0476 1803-1269
Popis:	During machining, most of the thermal sources are resulting from the conversion of mechanical energy during the chip shearing mechanism and the intense frictions between the tool, the chip, and the machined surface. Thermal gradients are high and localized, especially for low thermal diffusivity material like titanium alloys. Moreover, heat rates come close to few million degrees per second in the shearing zones. Even though several authors performed thermography techniques to determine the temperature distribution into the machined material, their results remain underestimated due to experimental limitations. In this research, a new temperature measurement technique has been developed based on a single wire thermocouple to measure at one exact location both the temperature and the heating rate during orthogonal cutting test. The tests are performed with uncut chip thicknesses of 0.020 mm and 0.100 mm and with a cutting speed of 120 m/min with two different cutting angles. Results are discussed and compared to prior studies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4c004c47091b2db5d62cc21ab966372 https://doi.org/10.17973/mmsj.2021_7_2021073 Zobrazit plný text záznamu