pp. 1615-1623
S&M1455 Research Paper of Special Issue https://doi.org/10.18494/SAM.2017.1735 Published: November 24, 2017 Experimental Investigation of Thermal Strain Caused by Electrical Discharge Machining on Stainless Steel SUS430 [PDF] Chao-Ching Ho, Yuan-Jen Chang, Jin-Chen Hsu, Chia-Lung Kuo, and Fu-Chen Huang (Received May 1, 2017; Accepted September 14, 2017) Keywords: electrical discharge machining (EDM), digital image correlation (DIC), thermal strain, stainless steel SUS430
In this work, an experimental investigation of thermal strain caused by electrical discharge machining on a stainless-steel (SUS430) plate using digital image correlation is proposed. A speckle pattern was prepared by grinding the surface of objects to obtain a reliable and accurate measurement. The potential of the proposed system for thermal strain measurement using digital image correlation, combined with the ring-core method for electrical discharge machining, was evaluated. Ring-core machining involves milling a ring core around the inside of a displacement field analyzed by digital image correlation. It was observed that the peak strain presented in the outer ring and the strain decreased inward toward the inner core. Experimental results revealed that the maximum thermal strain caused by electrical discharge machining was proportional to the drilling depth.
Corresponding author: Chao-Ching HoCite this article Chao-Ching Ho, Yuan-Jen Chang, Jin-Chen Hsu, Chia-Lung Kuo, and Fu-Chen Huang, Experimental Investigation of Thermal Strain Caused by Electrical Discharge Machining on Stainless Steel SUS430, Sens. Mater., Vol. 29, No. 11, 2017, p. 1615-1623. |