Development of remote wave generator for inspection of a focus in a human body

为了建立一种用于焦点检测的人体内波的远程产生方法，提出了一种远程激振器。激振器由一根长弦和一个由薄板制成的框架组成，在人体内产生振动。弦将振动从电磁激振器传递到框架，然后在框架中产生弯曲振动。此外，为了建立求解框架结构非线性振动的分析方法，分析了受轴向弹簧约束的L形梁的非线性振动，包括实验中观察到的非周期响应。

Aiming to establish a remote generation method of wave in a human body for an inspection of a focus, a remote-vibration exciter is proposed. The exciter consists of a long string and a frame made of thin plates which generates vibrations in a human body. The string transmits vibrations from an electromagnetic vibration exciter to the frame, then bending vibrations are generated in the frame. Furthermore, to establish an analytical procedure solving nonlinear vibrations generated in the frame structure, nonlinear vibrations of a L-shaped beam constrained by an axial spring are analyzed, including non-periodic responses also observed in the experiment.