Rui Manuel Silva Fernandes, University of Beira Interior, Instituto D. Luis, Covilha, Portugal, Machiel Simon Bos, University of Beira Interior, Covilha, Portugal, Jean-Philippe Montillet, University of Beira Interior, SEGAL (UBI/IDL), Covilha, Portugal and Xiaoxing He, East China Jiaotong University, School of Civil Engineering and Architecture, Nanchang City, China