624 



10 



PIPPABD AND CHITTY ON EXPERIMENTS ON THE 



disks, Yf-inch thick, connected by a central distance-piece of f -inch diameter 

 as shown in Fig. 12. In the first test a point load was applied opposite 



Fig. 14. 



Fig. 16. 



frO 0-2 O'i 



HAM DISPLACEMENT : INCHES 



LOAD-DlSPLAOEMENT CCBVB FOE TiN 



WITH Hbavily Reinfoeoed Ends. 

 Point Load on Seam. 



ram displacement ; inches 



Load-Displacement Cueves foe Tins 

 WITH Heavily Reinfoeoed Ends. 

 Point Load away feom Seam. 



to the longitudinal seam in the tin, the specimen being half bedded in 

 sand as in other tests. The type of failure is shown in Fig. 13 and the 

 resulting load-displacement curve in Fig. 14. For small loads the dent 



Table I. 



was elliptical, the major axis being a well-defined crease. As the load 

 was increased the edge of the dent was defined by two ellipses on the same 

 major axis, grooves forming along the minor axis between them. The 



