This study considers the effect of wire electro discharge machining (WEDM) parameter peak current (I_p) and pulse peak voltage (V_p) on the machined surface morphology of TiNiCu shape memory alloys. Various defects of machined surfaces were identified and correlated with parameter values and measured average surface roughness (R_a) and average surface depth (R_z). It was found that the nature of the machined surface is highly influenced by the nature of sparking, which is dictated by levels of peak current and peak voltage used during machining. Distinctions between machining parameters resulting in “rough-cut” and “trim-cut” machining are reported along with deviations in output responses, which counters the trend reported in the literature.

本研究考虑了电火花加工（WEDM）参数峰值电流（I _p）和脉冲峰值电压（V _p）对TiNiCu形状记忆合金的加工表面形态的影响。识别出加工表面的各种缺陷，并将其与参数值以及测量的平均表面粗糙度（R _a）和平均表面深度（R _{z）相关联}）。发现加工表面的性质在很大程度上受火花的性质影响，火花的性质由加工期间使用的峰值电流和峰值电压的水平决定。报告了导致“粗加工”和“修边”加工的加工参数之间的区别以及输出响应的偏差，这与文献中报道的趋势相反。