Issue 44

V. Reut et alii, Frattura ed Integrità Strutturale, 44 (2018) 82-93; DOI: 10.3221/IGF-ESIS.44.07 90 Figure 5 : Geometry and coordinate system of the quarter plane. here         2 2 " 2 ' L y x Iy x Qy x Py x              I is an identity matrix,       u x y x v x              1 0 1 1 0 1 P                      1 0 1 1 0 1 Q                   3 '( ) 1 1 ( ) 1 x g x x                          The new unknown function is input     0 , y x v x y    . The solution of (17) was constructed in the following form       1 2 0 , ( ) c y x Y x G x g d c                     (18) where       1 1 2 1 1 x x x e Y x x x                                  