Aluminum　foam-filled　corrugated　sandwich　panels　were　fabricated　by　filling　closed　cell　aluminum　foam　into　the　spaces　of　empty　corrugated　cores,　and　their　out-of-plane　compressive　behaviors　were　investigated　experimentally.　Results　show　that　the　compressive　stress　of　the　aluminum　foam-filled　corrugated　sandwich　panels　is　much　higher　than　the　compressive　stress　sum　of　aluminum　foam　and　empty　corrugated　panel.　Thus　the　foam-filled　corrugated　sandwich　panel　exhibits　significant　coupling　enhancement　effects.　The　peak　stress　per　unit　mass　and　specific　energy　absorption　(SEA)　of　the　foam-filled　panels　could　be　as　large　as　6.3　and　14.8　times,　respectively,　compared　to　that　of　the　corresponding　empty　one.　Compared　to　aluminum　foam　which　has　excellent　energy　absorption　performances,　SEA　of　the　foam-filled　corrugated　sandwich　panel　increases　by　50%.　Peak　compressive　strength　of　corrugated　panels　varying　with　relative　density　was　predicted　theoretically.　It　is　shown　that　the　buckling　model　of　the　corrugated　core　web　changes　from　low　order　to　high　order　due　to　foam　filling.　The　high　order　has　shorter　wavelength　compared　to　the　lower　one　and　requires　much　larger　compressive　load;　therefore,　a　significant　coupling　enhancement　effect　is　caused.