Effect of varying geometrical parameters of trapezoidal corrugated-core sandwich structureN.Z.M. Zaid, M.R.M. Rejab, A.F. Jusoh, D. Bachtiar and J.P. SiregarMATEC Web Conf., 90 (2017) 01018DOI: https://doi.org/10.1051/matecconf/20179001018