Engineering Transactions, 46, 3-4, pp. 291–314, 1998
10.24423/engtrans.646.1998

Mechanical Characterization of the Interface Between a Shape Memory Alloy Fiber and a Resin Epoxy Matrix

F. Thiebaud
Institut Des Microtechniques de Franche Comté FR 0067
France

B. Gabry
Institut Des Microtechniques de Franche Comté FR 0067
France

C. Lexcellent
Institut Des Microtechniques de Franche Comté FR 0067
France

The aim of this paper is to characterize the interface between a shape memory alloy wire (SMA) and an epoxy resin matrix. Here we present the effect of various surface treatments applied to SMA NiTi wires on the quality of the interface fiber/matrix. First, the use of the fiber pull–out test allows to separate the different treatments into two families: on the one hand, decohesion of the wire; on the other hand, rupture of the wire before debonding. The data given by the pull–out tests are not sufficient to differenciate the surface treatments which cause the breaking of the wire rather than the interfacial debonding of the fiber/matrix. In order to complete our research, a topographical study is carried out on different wires. It allows us to extract the parameters which characterize the vertical distribution of roughness and its morphology. The analysis of these experimental results leads to the choice of the surface treatment which will guarantee higher interfacial stresses. Among all the wires studied, we choose the prestrained wire. The quantitative aspect of this study allows us to know better the evolution of the different parameters of roughness, and thus to guide our research works to an optimal surface treatment of the wire.
Keywords: shape memory alloy; composite material; interface fiber/matrix; pull-out test; surface treatments; roughness; smart material
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Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).

References

C. LIANG, J. LIA and C. ROGERS, Behavior of shape memory alloy reinforced composite plates, Proceedings of 30th Structures, Structural Dynamics and Material Conference, AIAA-89-1331-CP, pp. 1504–1513, 1989.

A. BAZ, S. POH, J. RO, M. MUTUA and J. GILHEANY, Active control of Nitinol-reinforced composite beam, Intelligent Structural Systems, pp. 169–212, 1992.

Y. FURUYA, Design and experimental verifications of intelligent materials using shape memory alloy, Proceedings of the International Symposium on Microsystems, Intelligent Materials and Robots, Sendai, Japan, September 27–29, 1995.

M. SALVIA and J. GRANDO, Influence des conditions déaboration sur les performances des composites hybrides adaptables, Journées Nationales sur les Composites, no 10, 29–30–31 octobre 1996, Paris 1996, pp. 123–130, 1996.

J. JIA and C.A. ROGERS, Formulation of a mechanical model for composites with embedded S.M.A. actuators, The American Society of Mechanical Engineers, Book No H00506 pp. 203–210, 1989.

G. XU, B.C. LAGOUDAS, J.T. WEN, D. HUGHES, Thermo-electro-mechanical modeling and structural response of a flexible beam with external S.M.A. actuators, SPIE 2442, pp. 503–515, 1995.

K. JONNALAGADDA, G.E. KLINE and N.R. SOTTOS, Local displacements and load transfer in shape memory alloy composites, Theoretical and Applied Mechanics, Report NO. UILU-ENG 95–6027, 1995.

P. LE MOAL and D. PERREUX, Evaluation of creep compliances of unidirectional fibre rein forced composites, Composites, Science and Technology, pp. 469–477, 1993.

S. LECLERCQ and C. LEXCELLENT, A general macroscopic description of the thermomechanical behavior shape memory alloys, Journal of Mechanics and Physics of Solids, 44, NO. 6, pp. 953–980, 1996.

S. LECLERCQ, De la modélisation thermomécanique et de I'utilisation des alliages á mémoire de forme, Thèse de l’Universite de Franche-Comté en S.P.I., juin 1995.

CHUN-HWAY HSUEH, Embedded end debonding during fiber pull-out, Materials Science and Engineering, A163 L1–L4, 1993.

J.P. FAVRE, G. DESARMOT, V. ORLIONNET and F. SAINT ANTONIN, Techniques de fragmentation pour la mesure de I'adhésion fibre-matrice, Journées Nationales sur les Composites NO.5 – pluralis, pp. 210–223, Paris 1986.

B. GRESZCZUK, Theoretical studies of the mechanics of the fiber-matrix interface in composites, ASTM STP 452, American Society for Testing and Material, pp. 42–58, 1969.

J.E. BIDAUX, J.A.E. MANSON, R. GOTTHARDT, Active stiffening of composite materials by embedded shape-memory-alloy fibres, Material Research Society, Symp. Proc., 459, pp. 107–117, 1997.

K.J. STOUT, P.J. SULLIVAN, W.P. DONG, E. MAINSAH, N. LUO, T. MATHIA and H. ZAHOUANI, The development methods for the characterization of roughness in 3 dimensions, phase II report, vol. 1 and 2, 1993.

C. FAYOLLE, Analyse statistique de la topographie des surfaces, Thèse de Docteur Ingénieur, specialité mécanique, Ecole Centrale de Lyon, mars 1983.




DOI: 10.24423/engtrans.646.1998