光纤光栅应变传感器光_力转换的非线性时变方程.pdfVIP

39 1 ( ) Vol. 39 No. 1 2011 1 JOURNAL OF TONGJI UNIVERSITY(NATURAL SCIENCE) Jan. 2011 : 0253374X(2011 DOI: 10. 3969/ j. issn. 0253374x. 2011. 01. 010 吴永红, 邵长江, 屈文俊, 周 巍 ( , 200092) : , . , . 1 : ; ; ; 1. 1 : P 125 : A [ 1] , , Nonlinear and Timedependant Optomechanical , Transformation Equation for FBG Strain Sensors [ 8] , ( 1) ( 3) 1 . WU Yonghong, SHAO Changjiang, QU Wenjun , ZHOU Wei ( D partm nt of Construction Engin ring, Coll g of Civil Engin ring, Tongji Univ rsity, Shanghai 200092, China) Abstract: Bas d on th Basic fib r optical Bragg grating(FBG) strain s nsing principl and th basic th ori s of lastoplastic and visco lastic m chanics, a nonlin ar and tim d p ndant opto 1 m chanical transformation quation for FBG s nsors was Fi . 1 Dia ram of analytical model for bondin layer stablish d, into which ff cts of both plastic and visco lastic m chanic b haviors of a s nsor w r incorporat d. 1:x ; R ; A B ; l t Key words: fibr optics; opticalm chanical transformation; FBG s nsors; nonlin ar and tim d p ndant ff ct , , ; , , A C . , ( x , t ) = E (x , t ) ( 1) [ 1- 4] c (x , t ) = E c c (x , t ) (2) . , a(x, r