Abstract
The breaking strength of nipple, which is lossely connected with neighbouring electrodes and exposes a gap between their contact surfaces, for bending load, denotes low value, between 50-60 per-cent, as compared with tight joining state, and it easily break down.
On the other hand, its observed that the transverse strength of nipple, calculated as a column having equal size with its core diameter, indicates half magnitude of its test-piece streugth.
These experimental results suggest that attentive treatments are necessary, expressly for small size electrodes, against anomalous shocks by crumbling of scraps orcareless operations.
