HIC NACE TM0284

                                                                           ∑ (a x b)  

                          Crack Sensitivity Ratio, CSR= ------------- x 100%                 

                                                                             (W x T)

                                                                          ∑ a   

                          Crack Length Ratio,    CLR= -------- x 100%                 

                                                                            W 

                                                                            ∑ b   

                          Crack Thickness Ratio, CTR = ------ x 100%                 

                                                                             T

                        Where; a= crack length

                                     b= crack thickness

                                     W= section width

                                     T = test specimen thickness.