A novel moiré-based optical scanning head for high-precision contouring
- 199 Downloads
This paper is devoted to the design and implementation of a novel moiré-based optical head mounted on the robotic arm of a coordinate measuring machine. The optical components of the recently developed two-projector moiré setup were miniaturized and integrated in the optical head. Special care was taken in minimizing the weight of the resulting structure so as to reduce as much as possible the forces acting on the robotic arm. The prototype of the optical head was tested by contouring the shape of different objects and measuring the displacements of a metallic bar subjected to compression loading. Measurements conducted with the proposed optical head were consistent with those obtained via a coordinate measuring machine (CMM). The values of the dimensions found fell always within the average ± standard deviation interval measured with the CMM. The optical head appears very suited for contouring the shape of objects and for determining the out-of-plane displacement field of mechanical components subjected to specific boundary and loading conditions. Furthermore, the system can be easily implemented inline in an industrial context to perform measurements as a product is being manufactured.
KeywordsProjection moiré Optical scanning head Coordinate measuring machine (CMM) Contouring Reverse engineering
Unable to display preview. Download preview PDF.
- 6.Malz R (1989) Adaptive light encoding for 3-D-sensing with maximum measurement efficiency. Proceedings of the 11th DAGM-Symposium, Springer-Verlag, London, pp. 98–105Google Scholar
- 9.McGlone C, Mikhail E, Bethel J (eds) (2004) Manual of photogrammetry, Fifthth edn. American Society of Photogrammetry, Falls ChurchGoogle Scholar
- 13.Sciammarella CA, Lamberti L, Sciammarella FM (2005) High accuracy contouring with projection moiré. Opt Eng 44, Paper No. 093606:112Google Scholar
- 15.Alrashdan A, Motovalli S, Suharitdamrong V (1998) Design model generation for reverse engineering using multi-sensors. IIE Trans 30:357–366Google Scholar
- 18.Sciammarella CA, Lamberti L, Boccaccio A (2008) High precision contouring utilizing the moiré method. Proceedings of the 11th International Congress and Exhibition on Experimental and Applied Mechanics 2008; Orlando, FL; United States; 2 June 2008 through 5 June 2008, 3:1495–1510Google Scholar
- 19.Sciammarella CA, Lamberti L, Boccaccio A (2008) General model for moiré contouring. Part 1: theory. Opt Eng 47, Paper no. 033605:1–15Google Scholar
- 20.Sciammarella CA, Lamberti L, Boccaccio A, Cosola E, Posa D (2008) General model for moiré contouring. Part 2: applications. Opt Eng 47, Paper no. 033606:1–16Google Scholar
- 21.Sciammarella CA, Lamberti L, Boccaccio A, Cosola E (2007) High precision contouring. Recent advances. Proceedings of SEM Annual Conference and Exposition on Experimental and Applied Mechanics 2007; Springfield, MA; United States; 3 June 2007 through 6 June 2007, 1:399–408Google Scholar
- 23.Boccaccio A, Casavola C, Lamberti L, Pappalettere C (2011) Experimental analysis of foam sandwich panels with projection moiré. Proceedings SEM Annual Conference on Experimental and Applied Mechanics; Uncasville, CT; United States; 13 June 2011 through 16 June 2011, 5:249–256Google Scholar
- 25.Sciammarella CA, Boccaccio A, Frassanito MC, Lamberti L, Pappalettere C (2011) Measurement of residual stresses in diamond coated substrates utilizing coherent light projection moiré interferometry. Proceedings SEM Annual Conference on Experimental and Applied Mechanics; Uncasville, CT; United States; 13 June 2011 through 16 June 2011, 5:209–217Google Scholar