- 作者: 陳文咸; 章明; 陳繼堯
- 作者服務機構: 中正理工學院應用物理系; 臺灣大學機械工程系; 中山科學院核能研究所
- 中文摘要: 以微擾理論及相互關係,我們推導了一個理論以預測聲波在固體材料中之相移,該相移或乃因材料內部密度或勁度局部改變所引起,通常其值很小。該理論在研究材料中殘留應力分佈方面具應用價值。
- 英文摘要: A theory, based on the perturbation theory and the reciprocity relation, is derived to predict thephase shift of an acoustic wave propagating in a solid material. The phase shift of the wave may be due toa local density and/or stiffness change in the interior of the sample and the value is typically small. Thetheory may have possible applications to the study of residual stress distribution in the material.
- 中文關鍵字: perturbation theory; reciprocity relation; phase shift; acoustic wave; residual stress
- 英文關鍵字: --