Dị ka anyị niile maara, a na-ahọrọkarị ihe ndị dị ka sponge, plastic foamed, rọba na osisi dị ka ihe nkwụchi na ihe mgbochi na ndụ n'ezie. Dị ka otu n'ime porous metal ihe, kedu uru nke ike absorption na buffering ya?

N'okwu ndị nkịtị, ihe ọ bụla na-enye ume yana ihe nchekwa nwere uru kacha na-ebu ibu nke ya. Mgbe mpaghara otu ahụ gafere ụfọdụ nrụgide, mmetụta ntinye ike na ntinye ga-efunahụ. Ya mere, sponges, plastics foamed, rubber, foamed aluminum, etc. Ihe nrụgide dị ugbu a bụ ihe kachasị mma na nke a na-ejikarị eme ihe.

Dị ka ihe metal ultra-light nke nwere ike ịfe n'elu mmiri, ụfụfụ aluminum nwere njupụta nke 0.2-0.4g / cm³, nke bụ ihe dịka 1/30 nke njupụta nke ígwè; Otú ọ dị, isi ike ya na-ehulata bụ okpukpu 1.5 nke ígwè; n'okpuru otu arọ ahụ, The compressive ike bụ 5 ugboro nke ígwè; N'otu oge ahụ, arụmọrụ damping nke aluminom foamed bụ 5-10 ugboro nke ígwè, na aluminom foamed nwere porosity nke ihe karịrị 80% nwere ike ịmịkọrọ 20J / cm³ nke ume mgbe 50% mebiri emebi, nke kacha mma. . Ihe na-awụ akpata oyi n'ahụ.