1. Malekian M, Park SS, Jun MB (2009) Tool wear monitoring of micro-milling operations. J Mater Process Technol 209(10):4903–4914. doi: 10.1016/j.jmatprotec.2009.01.013
2. Wang G, Yang Y, Xie Q, Zhang Y (2014) Force based tool wear monitoring system for milling process based on relevance vector machine. Adv Eng Softw 71(1):46–51. doi: 10.1016/j.advengsoft.2014.02.002 10.1016/j.advengsoft.2014.02.002
3. Azmi A (2015) Monitoring of tool wear using measured machining forces and neuro-fuzzy modelling approaches during machining of GFRP composites. Adv Eng Softw 82:53–64. doi: 10.1016/j.advengsoft.2014.12.010
4. Kaya B, Oysu C, Ertunc HM (2011) Force-torque based on-line tool wear estimation system for CNC milling of inconel 718 using neural networks. Adv Eng Softw 42(3):76–84. doi: 10.1016/j.advengsoft.2010.12.002
5. Li X (2002) A brief review: acoustic emission method for tool wear monitoring during turning. Int J Mach Tools Manuf 42(2):157–165. doi: 10.1016/S0890-6955(01)00108-0