1 動(dòng)態(tài)法測(cè)試（線性或非線性） 2 樣品完全非破壞性測(cè)試 Within a sample, a vibration is induced by a small mechanical impulse. A microphone or pieze-electric transducer picks up the vibrations. The electrical signal is adapted and amplified so the software determines different resonant frequencies with their damping loss factor. wan能材料試驗(yàn)機(jī) 高溫動(dòng)態(tài)彈性模量和阻尼分析系統(tǒng)