Magnetostrictive properties of titanate coupling agent treated Terfenol-D composites

► Our experimental results indicate the particles and the polymer matrix have poor bonding. ► The poor bonding prevents the effective transfer of the strain from the particles to the matrix. ► We used titanate as the coupling agent to improve the bond strength between the particles and the matrix. ► The results indicate the bond strength does increase as expected. ► The promotion of the bond strength leads to the increase of magnetostrictive properties.