The effect, on the residual stress measurement accuracy, of the drilling speed of the end-mill during the hole-drilling measurements was evaluated in Ti6A14V. In spite of the well-known consideration that the highest achievable speed should be used during hole drilling, very few experimental works exist analyzing the effects of using lower velocities. Hole-drilling experiments were performed in this study by measuring the released strain by electronic speckle pattern interferometry. A known stress state was generated by loading the sample in a four point bending frame up to 50% of the yield strength. Drilling speed ranging in 5,000 ÷ 50,000 rpm was investigated by using an electronically controlled mill. The expected stress field, evaluated by a numerical model in ANSYS®, was compared with the measured one at different drilling speeds.
|Autori interni:||BARILE, Claudia|
|Titolo:||Drilling Speed Effects On Accuracy Of HD Residual Stress Measurements|
|Data di pubblicazione:||2014|
|Digital Object Identifier (DOI):||10.1007/978-3-319-00876-9_15|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|