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25 April 2023 Surface plastic flow and random planar graph representation in the polishing of rough surfaces (Conference Presentation)
Ashif Iquebal, Satish Bukkapatnam, Daren Cline
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Proceedings Volume PC12490, Surface Engineering and Forensics; PC124900D (2023) https://doi.org/10.1117/12.2658642
Event: SPIE Smart Structures + Nondestructive Evaluation, 2023, Long Beach, California, United States
Abstract
Surface finishing processes consume 20–70% of the cycle time of the emerging additive manufacturing process chains. Effective representations of the spatiotemporal evolution of the surface morphology are imperative for developing monitoring schemes to arrest cycle time overruns. We present a thermodynamically consistent random planar graph representation to monitor, via in situ imaging, the spatiotemporal evolution of surface morphology during finishing processes. Experimental investigations into the finishing of electron beam printed Ti-6Al-4V components to Sa < 20 nm roughness suggest that the proposed representation captures the complex interflow among neighboring asperities during finishing, and establishes a radically new endpoint criterion, i.e., surface quality improves only until each asperity interflows with six neighbors.
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Ashif Iquebal, Satish Bukkapatnam, and Daren Cline "Surface plastic flow and random planar graph representation in the polishing of rough surfaces (Conference Presentation)", Proc. SPIE PC12490, Surface Engineering and Forensics, PC124900D (25 April 2023); https://doi.org/10.1117/12.2658642
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KEYWORDS
Surface finishing
Polishing
Particles
Bridges
Physics
Additive manufacturing
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