Comparison between the Classic Sensor Embedding Method and the Monitoring Patch Embedding Method for Composites Instrumentation

Torres, Mauricio; Collombet, Francis; Douchin, Bernard; Crouzeix, Laurent; Grunevald, Y-H.

doi:10.1007/s10443-013-9368-x

Cited by 9 publications

(17 citation statements)

References 22 publications

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“…[16,17,26,27] These two concepts deal with a crack propagating between two adjacent composite plies. [16,17,26,27] These two concepts deal with a crack propagating between two adjacent composite plies.…”

Section: Mechanical Testing To Determine Interlaminar Fracture Tougmentioning

confidence: 99%

“…These silicon lures are employed as substrate for tunneling junction sensors (TJS) developed by LAAS. [16,22,23] The size of these decoy sensors is 2 × 2 × 0.3 mm and they are glued to a PCB Kapton® flex wire connection of 50 mm long (Figure 2a). The sensors are placed 5 mm ahead from the nylon foil.…”

Section: Manufacturing Of Couponsmentioning

confidence: 99%

“…The critical energy release rate (G IC ) is calculated mostly through two different computation methods, proposed in the testing materials standards: the modified beam theory (MBT) and the area method. [16,17,26,27] These two concepts deal with a crack propagating between two adjacent composite plies. The crack length, the induced load, and the specimen displacement are required.…”

Section: Mechanical Testing To Determine Interlaminar Fracture Tougmentioning

confidence: 99%

“…[4][5][6][7][8][9]11] Nonetheless, the designers still view the sensor as an implanted flaw which could be the initiation site for delamination growth, having a higher chance to cause deterioration of the properties of the parent material. [12,[14][15][16] These perturbations are a big unknown as they could have an influence on the mechanical properties and crack initiation of the parent structure due to the sensor's presence. [14] In all of them, the sensor creates geometric and material discontinuities inside the composite structure.…”

Section: Introductionmentioning

confidence: 99%

“…[8,[12][13][14] Because the sensor embedding is conceived in the structure itself, it causes small perturbations on the sensor's neighborhood such as resin pockets or plies misalignments. [12,[14][15][16] These perturbations are a big unknown as they could have an influence on the mechanical properties and crack initiation of the parent structure due to the sensor's presence. These worries, near the bared sensors, remain few studied until now and could become a major risk to cause delamination of the composite structure.…”

Section: Introductionmentioning

confidence: 99%

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Mode I interlaminar fracture toughness of carbon‐epoxy coupons with embedded ceramic sensors

et al. 2017

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This study analyses the mechanical and crack growth behavior of woven carbon fiber reinforced plastics (CPRF) with embedded ceramic sensors. The material studied here is 3K-70-P carbon fiber plain weave with EPOLAM 2015® epoxy resin. The composite is manufactured with vacuum bagging procedure. Later on, the composite Mode I interlaminar fracture toughness (G IC ) is calculated by means of double cantilever beam tests (DCB) for two layout configurations [0/90] and [±45] with and without embedded sensors. Results give an initial approach of the fracture behavior of an instrumented composite facing an interlaminar crack. The interlaminar fracture toughness for the instrumented specimens is lower compared to the noninstrumented coupons. The presence of the sensor and its wire connection has a considerable impact on the damage tolerance of the woven composite, where the sensors surroundings seem to be the more likely region to be affected by an interlaminar fracture. K E Y W O R D S carbon fibers, delamination, fractography, fracture toughness F I G U R E 5 Load-displacement curve for [±45] double cantilever beam coupons [Colour figure can be viewed at wileyonlinelibrary.com] Reference With Peak load = 105 N, Peak load = 45 N, With How to cite this article: Torres M, Tellez RA, Hernández H, Camps T. Mode I interlaminar fracture toughness of carbon-epoxy coupons with embedded ceramic sensors.

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Section: Mechanical Testing To Determine Interlaminar Fracture Tougmentioning

confidence: 99%

Section: Manufacturing Of Couponsmentioning

confidence: 99%

Section: Mechanical Testing To Determine Interlaminar Fracture Tougmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mode I interlaminar fracture toughness of carbon‐epoxy coupons with embedded ceramic sensors

et al. 2017

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Function‐integrative Lightweight Engineering – Design Methods and Applications

Modler

Winkler

Filippatos

et al. 2020

Chemie Ingenieur Technik

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Function-integrative lightweight engineering represents an essential element in modern design methods. Currently, there is a great need for the incorporation of sensors, actuators and electronics in novel, demand-oriented components. In contrast to a subsequent, mostly adhesive bonding, structural integration offers numerous advantages, for example in terms of space requirements and robustness. This paper demonstrates the potential of integrated sensors for various industrial sectors based on selected examples from mechanical engineering, aviation, mobility, sports, and medical technology.

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Review of the design process of a representative test specimen of a structural joint of a carbon‐epoxy aircraft

Vargas‐Rojas¹

2018

Polymer Composites

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The design process of a Representative Test Specimen (RTS) intended to reproduce the same state of stress of a complex‐in‐shape structural joint but with a simpler geometry is here inspected. The RTS corresponds to the joint of the fuselage with the main landing gear and the lower segment of the supporting strut of a strut‐braced, high wing aircraft fabricated with carbon‐epoxy composite. The design process of the RTS is based on the Multi‐Instrumented Technological Evaluators method, developed to reduce testing times and costs with respect to the standard Testing Pyramid approach. Complementary design methods comprise the Quality Functions Deployment articulated with the Functional Analysis. Afterward, once that the parametric design of the RTS is conducted with an iterative numerical analysis based on the Finite Element Method the outcome is a sandwich‐type structure to be tested with a non‐standardized three‐point bending test. In closing, the said design methods plus the numerical analysis foster an integral‐design approach in the outline of composite structures. POLYM. COMPOS., 40:E898–E911, 2019. © 2018 Society of Plastics Engineers

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Comparison between the Classic Sensor Embedding Method and the Monitoring Patch Embedding Method for Composites Instrumentation

Cited by 9 publications

References 22 publications

Mode I interlaminar fracture toughness of carbon‐epoxy coupons with embedded ceramic sensors

Mode I interlaminar fracture toughness of carbon‐epoxy coupons with embedded ceramic sensors

Function‐integrative Lightweight Engineering – Design Methods and Applications

Review of the design process of a representative test specimen of a structural joint of a carbon‐epoxy aircraft

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