A non-destructive evaluation system for additive manufacturing based on acoustic signature analysis with laser Doppler vibrometry

James Trolinger; Amit Lal; Andrei K. Dioumaev; Dave Dimas

doi:10.1117/12.2320445

18 August 2018 A non-destructive evaluation system for additive manufacturing based on acoustic signature analysis with laser Doppler vibrometry

James Trolinger, Amit Lal, Andrei K. Dioumaev, Dave Dimas

Author Affiliations +

Proceedings Volume 10749, Interferometry XIX; 107490C (2018) https://doi.org/10.1117/12.2320445
Event: SPIE Optical Engineering + Applications, 2018, San Diego, California, United States

Abstract

Every object possesses a unique acoustical spectrum/signature that is determined by its dimensions, materials, defects, and history. The signature can be read and analyzed by exciting the part and scanning the surface using Laser Doppler Velocimetry (LDV). Defects, tampering, inferior materials, and spec failures change the signature and can be detected by reading the signature. Finite element analysis (FEA) employed with the computer design and knowledge of material makeup of an object can predict its signature. Additional security is possible by programming a hidden authentication key printed during manufacturing. Such a readable signature offers many opportunities, especially in additive manufacturing. This paper describes the development and potential applications of this photonic tool.

Conference Presentation

Citation Download Citation

James Trolinger, Amit Lal, Andrei K. Dioumaev, and Dave Dimas "A non-destructive evaluation system for additive manufacturing based on acoustic signature analysis with laser Doppler vibrometry", Proc. SPIE 10749, Interferometry XIX, 107490C (18 August 2018); https://doi.org/10.1117/12.2320445

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