Experimental investigation on the debonding strength in shape memory alloy wire reinforced polymers.

Khalili, S. M. R.; Saeedi, A.

The interfacial shear strength between the shape memory alloy (SMA) wire and epoxy matrix was evaluated experimentally using a single wire pull-out test. Moreover, the effect of pre-strain in SMA wires on the interfacial behavior was studied by pre-straining the SMA wires to 2% and 4% pre-strains. Experiments were conducted in both martensite and austenite phases of SMA. Results showed that pre-straining SMA wire in the martensite phase caused enhancement in interfacial shear strength due to recovery force generation. Further, 9.7% and 33% improvements in the interfacial shear strength were achieved at 2% and 4% of SMA pre-strain, respectively. However, the enhancement of interface behavior did not occur, when the SMA wires were subjected to pre-strain in the austenite phase.

SHAPE memory alloys; DEBONDING; MARTENSITE; AUSTENITE; SHEAR strength

Mechanics of Advanced Materials & Structures, 2017, Vol 24, Issue 6, p490

1537-6494

Academic Journal

10.1080/15376494.2016.1142031