超聲波的縱波發射聲場
1.圓(yuan)盤波(bo)源縱波(bo)聲(sheng)場 在不(bu)考慮介質(zhi)中(zhong)衰(shuai)減的情況下,圓(yuan)盤波(bo)源在理想(xiang)液體介質(zhi)中(zhong)振動輻(fu)射(she)聲(sheng)波(bo),其中(zhong)某一(yi)點(dian)波(bo)源d,在波(bo)源軸線上Q點(dian)所引起(qi)的聲(sheng)壓(ya)為(wei)(圖(tu)2.13)基于波(bo)的疊加原理,整(zheng)個(ge)圓(yuan)盤波(bo)源上各(ge)點(dian)在Q點(dian)引起(qi)的聲(sheng)壓(ya)疊加,就是Q點(dian)處(chu)的聲(sheng)壓(ya),由(you)此可得到軸線上任(ren)一(yi)點(dian)的聲(sheng)壓(ya)幅值為(wei)波(bo)源軸線...