314 



REPOHT 1867. 



IKANSVEKSB STRAIN. 



Exp. XLIX. — Bar of Steel from the Titanic Steel Co., "Worcester. Dimen- 

 sion of bar 1-008 inch square. Length between supports 4feet6inches. 

 Mark on bar, " D X." 



liesults of Exp. XLIX. 



Here the weight (w) at the limit of elasticity is 860 lbs., and the corre- 

 sponding deflection (S) is l^OOS. 



By formula (6). — The mean value of the deflection for unity of pressure 

 and section (D^) = ^001261. 



By formida (7). — The mean value of the modulus of elasticity (E) 

 = 31,218,000. 



By formula (2). — The modulus of elasticity (E) corresponding to 112 lbs. 

 pressure = 30,418,000. 



By formula (8). — The work of deflection (U) up to the hmit of elasticity 

 = 39-345. 



By formula (9). — "Work of deflection (m) for unity of section = 36^915. 



B^ formula (12).— Value of C, the unit of working strength = 4-699 tons. 



