... well-known equation describing tool wear was developed by F. W. Taylor early in thetwentieth century. 23 This equation, known as Taylor’s tool equation, isFIGURE 6.12 Illustration of different ... prediction viaacoustic emission analysis, ASME Journal of Engineering for Industry, 115, 390, 1993.23. Taylor, F. W., On the art of cutting tools, Transactions ASME, 28, 1907.24. Koren, Y., Ko, T. R., ... (6.16)where tl is the tool lifetime and C and n are empirically determined constants. Modified Taylorequations include the effects of feed rate and depth-of-cut, as well as interaction effects...