Iyunithi yoxinzelelo lwesandi yiPa (Pa), kwaye ubungakanani bayo bubonisa amandla omsindo wesandi, oko kukuthi, amandla amaza osasazo. Uxinzelelo olukhulu lwesandi, kokukhona ukuqina kwe-ultrasound kwaye komelele amandla asasazwayo. Okwangoku sesinye sezixa zomzimba ezibalulekileyo ezidla ngokusetyenziswa ukuchaza iimpawu zamaza esandi. Ngomlinganiselo woxinzelelo lwesandi, ezinye izixa zomzimba ezifana nesantya sesuntswana zinokufunyanwa ngokungathanga ngqo.
Ngethuba lokusasazwa kwamaza ama-longitudinal kwi-elastic medium, uxinzelelo lwamachaphaza aphakathi lutshintsha ngexesha, kwaye ubuninzi bamachaphaza aphakathi bunobunzima kwaye buncinci. Ngokomgaqo-siseko wokudibanisa, sinokucinga ngonxibelelwano oluqhubekayo njengoko luqulunqwe ngamalungu amaninzi adityanisiweyo amancinane e-dV. Isiphakathi kwisiqalelo somthamo esinjalo i-dV sinokuthathwa ngakumbi njengendawo yobunzima enobunzima be-ρdV. ρ luxinaniso lwesiphakathi, sisixa esitshintshayo ngexesha kunye nendawo phantsi kwentshukumo yamaza esandi. Emva kokuba i-volume element dV iphazanyiswe ngamaza omsindo, uxinzelelo lutshintsha ukusuka kwi-p0 ukuya kwi-p1, emva koko uxinzelelo olungaphezulu lwe-p olubangelwa ukuphazamiseka kwamaza omsindo lubizwa ngokuba nguxinzelelo lwesandi: p=p1- p0
Ngenxa yobude obufutshane kunye nokuphakama okuphezulu kwamaza e-ultrasonic, amandla anawo makhulu kakhulu, angabangela umphumo obalulekileyo woxinzelelo lwesandi kwiinqununu ze-medium.
Isicelo: Ukusetyenziswa kwe-Ultrasonic ekudleni: i-ultrasonic blade, umatshini wokusika we-ultrasonic
