Debonding initiation in a NiTi shape memory wire–epoxy matrix composite. Influence of martensitic transformation

Payandeh, Yousef; Meraghni, Fodil; Patoor, Étienne; Eberhardt, A.

doi:10.1016/j.matdes.2009.09.048

Cited by 38 publications

(26 citation statements)

References 34 publications

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“…The DIC system consisted of: (a) two cameras each with a resolution of 12 mega pixels, each equipped with a50 mm fixed focal length lens; (b) a digital control unit; and (c) a data acquisition system that is capable of recording images from the DIC system and digital signals from up to eight conventional sensors with signals of +/– 10 VDC . The data acquisition scheme is presented in detail elsewhere . The DIC data acquisition system recorded at a frequency of 1 Hz.…”

Section: Experimental Programmentioning

confidence: 99%

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Bond behavior of NiTiNb SMA wires embedded in CFRP composites

El-Tahan¹,

Dawood

2017

Polymer Composites

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This article summarizes the details of an experimental and analytical program that was conducted to study the bond behavior between nickel‐titanium‐niobium shape memory alloy wires and fiber reinforced polymer composites. Understanding this bond behavior will facilitate the design of composite systems that are fabricated using both materials and which would exhibit unique properties that cannot be achieved using either material separately. A total of nine pull‐out specimens were fabricated and tested. A digital image correlation (DIC) noncontact measurement system was used to identify the onset and propagation of the debonding. The experimental results indicated that the interfacial bond transfer consists of two components: cohesion (before the onset of debonding) and friction (after the onset of debonding). A 3‐D nonlinear finite element analysis (FEA) was conducted to investigate the debonding mechanism of the pull‐out specimens. A trilinear cohesive zone model was used to model the interface taking into account the cohesive and friction components of the stress transfer at the interface. The debonding mechanism predicted by the FEA matches the experimental observations that were obtained using conventional instruments and the DIC system, well. POLYM. COMPOS., 39:3780–3791, 2018. © 2017 Society of Plastics Engineers

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Section: Experimental Programmentioning

confidence: 99%

“…The research conducted to date predominantly studied the bond behavior of martensitic Nitinol wires, which exhibit the shape memory effect, embedded in epoxy cylinders [27][28][29][30][31][32][33], and FRP composites [34]. Comparably little is known about the bond behavior between NiTiNb SMA and FRP composites.…”

Section: Introductionmentioning

confidence: 99%

Bond behavior of NiTiNb SMA wires embedded in CFRP composites

El-Tahan¹,

Dawood

2017

Polymer Composites

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“…Figure c shows obvious debonding on the tensile side, and the compression side exhibits weak debonding. As shown in Figure d, the interfaces between the matrix and the SMA on both the tension and compression sides are obviously debonded; moreover, the SMA is completely separated from the matrix …”

Section: Resultsmentioning

confidence: 99%

Mechanical Properties and Interlaminar Fracture Toughness of Glass‐Fiber‐Reinforced Epoxy Composites Embedded with Shape Memory Alloy Wires

Shi

Sun

et al. 2017

Adv Eng Mater

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The effects of the content and position of shape memory alloy (SMA) wires on the mechanical properties and interlaminar fracture toughness of glassfiber-reinforced epoxy (GF/epoxy) composite laminates are investigated. For this purpose, varying numbers of SMA wires are embedded in GF/epoxy composite laminates in different stacking sequences. The specimens are prepared by vacuum-assisted resin infusion (VARI) processing and are subjected to static tensile and three-point-bending tests. The results show that specimens with two SMA wires in the stacking sequence of [GF 2 /SMA/ GF 1 /SMA/GF 2 ] and four SMA wires in the stacking sequence of [GF 4 /SMA/ GF 2 /SMA/GF 4 ] exhibit optimal performance. The flexural strength of the optimal four-SMA-wire composite is lower than that of the pure GF/epoxy composite by 5.76% on average, and the flexural modulus is improved by 5.19%. Mode-I and II interlaminar fracture toughness tests using the SMA/ GF/epoxy composite laminates in the stacking sequence of [GF 4 /SMA/GF 2 / SMA/GF 4 ] are conducted to evaluate the mechanism responsible for decreasing the mechanical properties. Scanning electron microscopy (SEM) observations reveal that the main damage modes are matrix delamination, interfacial debonding, and fiber pullout.

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“…The coating between the matrix and the reinforcement is witnessing strong coupling effects with complex local behaviour. Inelastic deformation mechanisms such as plasticity and/or martensite transformation occur frequently at the coating region and strongly interact with the local damage of the matrix/reinforcement interface (Payandeh et al, 2010(Payandeh et al, , 2012. To reiterate, one of the aims of this work is to develop appropriate tools to assess the electro-magneto-inelastic fields in the matrix, fibers and coating layers.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric-piezomagnetic behaviour of coated long fiber composites accounting for eigenfields

Chatzigeorgiou

Benaarbia

Meraghni

2019

Mechanics of Materials

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Debonding initiation in a NiTi shape memory wire–epoxy matrix composite. Influence of martensitic transformation

Cited by 38 publications

References 34 publications

Bond behavior of NiTiNb SMA wires embedded in CFRP composites

Bond behavior of NiTiNb SMA wires embedded in CFRP composites

Mechanical Properties and Interlaminar Fracture Toughness of Glass‐Fiber‐Reinforced Epoxy Composites Embedded with Shape Memory Alloy Wires

Piezoelectric-piezomagnetic behaviour of coated long fiber composites accounting for eigenfields

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