Metal Embedded Fiber Bragg Grating Sensors in Layered Manufacturing

Author:

Li Xiaochun1,Prinz Fritz2

Affiliation:

1. Department of Mechanical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706

2. Departments of Mechanical Engineering and Materials Science and Engineering, Stanford University, California 94305-3030

Abstract

Layered Manufacturing can build functional “smart” parts with sensors, integrated circuits, complete functional assemblies, and actuators placed within the structure and fully embedded. These sensors can be used to gain data for validating or improving designs during the prototype stage or to obtain information on the performance and structural integrity of functional components in service. A sequence for embedding fiber optic sensors in metals via Layered Manufacturing is developed. Fiber Bragg Grating (FBG) sensors, embedded in nickel and stainless steel were characterized for temperature and strain measurements. Moreover, a decoupling technique that is capable of separating temperature and strain effects was also developed. This paper also presents the application of the embedded sensors to monitor residual strains during laser-assisted Layered Manufacturing.

Publisher

ASME International

Subject

Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Control and Systems Engineering

Reference46 articles.

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3. Barkan, P., and Iasiti, M., 1993, “Prototyping: A Tool for Rapid Learning in Product Development,” Concurrent Engineering: Research and Applications 1, pp. 125–134.

4. Ashley, S. , 1995, “Rapid Prototyping is Coming of Age,” Mech. Eng. (Am. Soc. Mech. Eng.), 117(7), July, p. 6666.

5. Marcus, H. L., Harrison, S., and Crocker, J., 1996, “Solid Freeform Fabrication: An Overview,” American Society of Mechanical Engineers, Manufacturing Engineering Division, MED, v.4, 1996, pp. 3–9.

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