Free Trial

Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.

Share this Page URL

CHAPTER 7 Micro- and Nanomachining > 7.2 Machining Effects at the Microscale - Pg. 179

7.2 Machining Effects at the Microscale 179 Merchant. Until this difficulty is resolved with the experimental verification of the strain rate approach, it should be assumed that the strain rate effect may be responsible for some portion of the size effect in metal cutting. 7.2 MACHINING EFFECTS AT THE MICROSCALE It has been known for a long time that a size effect exists in metal cutting, where the specific energy increases with decrease in deformation size. Backer et al. 1 performed a series of experiments in which the shear energy per unit volume deformed ( u S ) was determined as a function of specimen size for a ductile metal (SAE 1112 steel). The deformation processes involved were as follows, listed from top to bottom with increasing size of specimen deformed: surface grinding; micromilling; turning;