At last, this thesis regards silicon steel and steel 20 as the research object, carries on magnetic domain observing experiments by bitter method. The result shows that changes of domains were induced by stress concentration.

• 作者还以硅钢片和20~%23钢为研究对象,利用粉纹法探索性地观察了样品应力集中部位的磁畴形貌,结果表明:应力载荷导致了样品磁畴的变化,在两种材料应力集中部位的表面都初步观察到了迷宫形状为主的磁畴。