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Prominence in Understanding the Position of Drill Tool Using Acoustic Emission Signals During Drilling of CFRP/Ti6Al4V Stacks

Prominence in Understanding the Position of Drill Tool Using Acoustic Emission Signals During Drilling of CFRP/Ti6Al4V Stacks

A. Prabukarthi, M. Senthilkumar, V. Krishnaraj
Copyright: © 2020 |Pages: 17
ISBN13: 9781799816904|ISBN10: 1799816907|ISBN13 Softcover: 9781799816973|EISBN13: 9781799816911
DOI: 10.4018/978-1-7998-1690-4.ch014
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MLA

Prabukarthi, A., et al. "Prominence in Understanding the Position of Drill Tool Using Acoustic Emission Signals During Drilling of CFRP/Ti6Al4V Stacks." Applications and Techniques for Experimental Stress Analysis, edited by Karthik Selva Kumar Karuppasamy and Balaji P.S., IGI Global, 2020, pp. 214-230. https://doi.org/10.4018/978-1-7998-1690-4.ch014

APA

Prabukarthi, A., Senthilkumar, M., & Krishnaraj, V. (2020). Prominence in Understanding the Position of Drill Tool Using Acoustic Emission Signals During Drilling of CFRP/Ti6Al4V Stacks. In K. Karuppasamy & B. P.S. (Eds.), Applications and Techniques for Experimental Stress Analysis (pp. 214-230). IGI Global. https://doi.org/10.4018/978-1-7998-1690-4.ch014

Chicago

Prabukarthi, A., M. Senthilkumar, and V. Krishnaraj. "Prominence in Understanding the Position of Drill Tool Using Acoustic Emission Signals During Drilling of CFRP/Ti6Al4V Stacks." In Applications and Techniques for Experimental Stress Analysis, edited by Karthik Selva Kumar Karuppasamy and Balaji P.S., 214-230. Hershey, PA: IGI Global, 2020. https://doi.org/10.4018/978-1-7998-1690-4.ch014

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Abstract

CFRP/Ti6Al4V stacks are widely used in aerospace and automobile industries as structural components. The parts are made to near net shape and are assembled together. Aerospace standards demand rigid tolerance for the holes. While drilling stacks, during the exit of drill from CFRP and entry into Ti6Al4V, there is a change in the overall behavior of the drilling process due to changes in the mechanical properties of the two materials. Hence, stacks should be drilled under their optimal machining conditions in order to achieve better hole quality. The machining parameters and tool geometry are different for CFRP and Ti6Al4V. This requires knowing the thickness of the CFRP and Ti6Al4V layers beforehand so that at the time of drill tool transition from CFRP to Ti6Al4V the machining parameters can be altered. But in aircraft bodies the cross-section varies along the profile and the thickness of the individual layers at different locations. The current study proposes the use of acoustic emission (AE) signals to monitor the drill position while drilling of CFRP/Ti6Al4V stacks.

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