In the heating method which can be available for nondestructive and in situ measurements of residual stresses, a new method is proposed for simultaneous estimation of the heat flux and residual stresses. The approach is formulated as an inverse problem by using the surface displacements relieved by local heating and the resulting nonlinear least square problem is solved by Levenberg-Marquardt method. In this procedure, the displacements of the direct problem are computed by FEM. The approach is applied to estimation of uniaxial and biaxial stresses in a plate. The numerical results show the effectiveness of the proposed method.%残留応力が原因で機械や構造物が破損に至ることはrnよく知られており，残留応力を正確に評価することはrn重要な問題である．現在，広く使用されている方法にrn穴あけ法とX線回折法がよく知られている．また，rn新しい測定方法の開発も活発で，主なものにピードフrnラッシュ法および電子式レーザスペックル干渉法rn（ESPI法）と局所加熱を組合わせた方法（以下，rnESPI-LH法と呼ぶ）がある．
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