196. 



REPORT 1867 



TEANSVEESE STRAIN. 



Exp. XXXI. — Bar of Steel from ITcssrs. Sanderson Brothers, Sheffield. 

 Dimension of bar 1-048 inch square. Length between supports 

 4 feet 6 inches. Mark on bar, " S 1." 



Results of Exp. XXXI. 



Here the weight {iv) at the limit of elasticity is 1060 lbs., and the cor- 

 responding deflection (l) is 1-180. 



By formula (0). — The mean value of the deflection for unity of pressure 

 and section (D,)= -0012822. 



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

 = 30,700,000. 



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

 pressure=31,482,000. 



By formula (8). — Work of deflection (U) up to the limit of elasticity 

 =52-116. 



By formula (9). — "Work of deflection (m) for unity of section =47-452. 



By formula (12). — Yalue of C, the unit of working strength =5-539 tons. 



