Evaluation of Fatigue Behavior and Surface Characteristics of Novel Machining Process: Rotary Chemical Machining (RCM)

Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_ADMTL-14-3_003

تاریخ نمایه سازی: 1 آبان 1400

Abstract:

In this study, Rotational Chemical Machining (RCM) as a novel machining process is introduced. The properties such as surface roughness and residual stress as well as fatigue strength of the RCM process are evaluated, discussed and compared to the conventional turning process. In this sense, Scanning Electron Microscope (SEM) and Atomic Force Microscope (AFM) were utilized. The results show the superiority of the RCM method over the conventional method and eliminate limits of process such as low surface quality and improve fatigue strength. The Amplitude Distribution Curve has a balanced Gaussian shape in RCM indicating the balanced distribution of peaks and valleys on machined surface. Due to the absence of machining force in the RCM process, in comparison to the turning process, maximum residual stress is significantly decreased from ۳۶۳Mpa to ۷۱Mpa; surface roughness reduced from ۳.۱µm to ۱.۵ µm as well as the fatigue strength improved ۲۰% approximately.

Authors

Pooya Bahrami

Department of Mechanical Engineering, Kermanshah Science and Research Branch, Islamic Azad University, Kermanshah, Iran

Ali Khoshanjam

Department of Mechanical Engineering, Kermanshah Science and Research Branch, Islamic Azad University, Kermanshah, Iran

Abdolhamid Azizi

Department of Engineering, Ilam University, Ilam, Iran