where TðtÞ; GiðtÞ; gðXÞ; f ijðXÞ and hijðXÞ are all known functions of their respective arguments. Of specific interest, due to its
association with a common experiment, is when the shear stress component T12 is imposed, i.e. TðtÞ ¼ T12ðtÞ in (14). With
this, and referring to (12), set