912 



Mr. W. A. Scoble : Further Tests of 



that under either kind of loading, stress and strain were 

 proportional to fracture, and therefore it was permissible to 

 calculate the stresses from formulae based on Hooke's law. 



RACTURSS 



WIS1 



EFLEXION 



It was not intended to compare the results from different 

 bars, but the several tests on each particular specimen only. 

 It was convenient, however, to divide the bars in three 

 groups depending on their strengths. 



The remarks were written against the data immediately 

 after the tests were made, before the results were calculated 

 and plotted. They are intended briefly to record observations 

 made during the tests. For example, the bending tests were 

 made in certain cases on twelve inch lengths, and therefore 

 the bending moments recorded at fracture were probably 

 high. In some of the pure torsion tests the bar fractured at 

 two sections, and the test was marked correct. Twelve 

 specimens were prepared, but four of them developed flaws 

 in hardening. 



