Abstract
This study investigates the characteristics of Fiber Braggs Grating (FBG) sensors with respect to their feasibility for use in additive manufactured materials under fatigue loading. This was done through tensile fatigue testing of both standard Acrylonitrile butadiene styrene (ABS) specimens and ABS specimens containing FBG sensors. These sensors were incorporated into the material using two different techniques: inserting and embedding. Comparing fatigue test results between the specimen types showed that incorporating the FBGs into the material affected fatigue life differently depending on the load level, while also increasing the variation in fatigue life between specimens. The strain measurements of the embedded FBGs were seen to more closely resemble results from finite element simulations than were the measurements of the inserted FBGs, thus proving embedding to be the superior technique.
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