      H-13 

         

       

      

       

         

           

          

           

             H-13 Dip Tank Specimen 2” each side 7” All corners square +.003” to -.003” All corners have.010” radius

                   H-13 Dip Tank Specimen 2” each side 7” All corners square +.003” to -.003” All corners have.010” radius    

        

                   

 H-13 Dip Tank Specimen 2” each side All corners square +.003” to -.003” All corners have.010” radius             3.5” 1.0” Side 7 Side 5 Side 1 1”.5” Side 3

 All but 4 measurements indicate compression

 Compressive Stress turns to Tensile

 Tensile stress values reduced

 Tensile stress again increasing

 Tensile stress approaching values seen at 10 cycles

 Tensile stress continuing to increase

 Tensile stresses at highest levels

 Tensile stress drop off again – by larger amount









  Stress v/s Cycles Normal Stress v/s Cycles Logarithmic (cannot be zero)

 ?          

              

         

          

 H-13 