The　deformation　and　damage　patterns　of　clamped　sandwich　plates　with　aluminum　foam　core　subjected　to　blast　loading　are　investigated　experimentally.　The　deflections　of　the　center　point　on　the　rear　face　sheet　of　sandwich　plates　under　five　blast　loadings　are　obtained.　The　deformation　and　damage　patterns　of　the　front　face　sheet,　aluminum　foam　core　and　rear　face　sheet　subjected　to　different　blast　loadings　are　given　also.　Two　types　of　the　fracture　mechanism　of　the　foam　cores,　which　are　shear　fracture　and　tensile　fracture,　are　analyzed.　The　research　results　show　that　the　foam　core　subjected　to　intensive　dynamic　loading　is　deformed　in　a　“progressive”　compressive　mode,　and　the　maximum　deflection　of　the　rear　face　sheet　quadratically　increases　with　the　blast　impulse　approximately.　©　2016,　Editorial　Board　of　Acta　Armamentarii.　All　right　reserved.