静电共振法测定碳丝横截面积和轴向模量研究

MEASUREMENT OF A SINGLE CARBON FIBER CROSS-SECTION AREA AND AXIAL YOUNG’S MODULUS BY SER

摘要

摘要: 本文用静电激发产生共振和非接触式接收信号的方法测定碳纤维单丝的横截面积和轴向杨氏模量。研究了空气阻尼、激发电极位置、非线性振动等因素对测试精度的影响,提出了降低测量误差的若干措施,为提高测试精度提供了依据。

Abstract: In order to overcome the difficulty in measuring cross-section area and axial Young's modulus of a single carbon fiber,we develop a new method, Static Electric Resonance (SER),and correspoading instruments which can preucisely measure the two parameters of a single carbon fiber with any crow-section form by making use of the technique of contactless resonance.The paper includes a consideration of some factors that may cause error in measuring,in the hope of raising measurement precision further.