usu totoRiyanto, Bambang Toto (Universitas Sumatera Utara, 2019) Background: CKD is a global public health problem with increased prevalence and incidence of kidney failure, poor prognosisWibowo, Toto (Universitas Sumatera Utara, 2014) Damage or wear and deformation will change the dynamic characteristics of the system and tends to increase the vibration energy. To