The Influence of Embedded Optical Fibers on the Interlamina Fracture Toughness of Composite Materials

Damage Assessment for Composite Smart Structures

“…Our results to date are encouraging and suggest no adverse effects, indeed, the presence of embedded optical fibers might even marginally improve the interlamina fracture toughness [15]. A condensed form of our knowledge base regarding damage assessment based on the fracture of embedded optical fibers in Kevlar/epoxy is summarized in Table 1.…”

<title>Fiber optic sensor considerations and developments for smart structures</title>

“…We have shown that neither the tensile nor compressive strength of Kevlar/epoxy appears to be decreased by the presence of the embedded optical fibers [7] and we have demonstrated that the interlarninafracture toughness of the composite material is not reduced by the presence of embedded optical fibers [8]. A recent study by Loken [9] has shown that embedded optical fibers with a diameter ofless than 140 un do not appear to reduce the ultimate tensile strength or the fatigue life of the graphite/epoxy specimens.…”

A century on diameter measurement techniques in cylindrical structures

“…For example, Yu et al successfully devised and manufactured an acoustic sensor based on an FBG combined with a 3D printing technique and employed polylactic acid (PLA) material as its substrate [54]. In general, the integration of fiber optic sensors into different AM structural materials allows for the measurement and analysis of deformation, fatigue damage, and evaluation of structural integrity [55,56].…”