[SY-K3] Symposium K-3

[SY-K3] Mechanism of controlled crack formation induced by memory effect of clay paste

^○Akio Nakahara¹, Rokuya Hayashi¹, Tomoki Hiraoka¹, Yousuke Matsuo¹, So Kitsunezaki² (1.Nihon Univ., Japan, 2.Nara Women's University, Japan)

Wet clay paste remembers the direction of vibration and flow it has experienced and, when the paste is dried, the direction of desiccation cracks strongly depends on the memory of such motions. To find out the mechanism of memory effect of vibration, we perform experiments to rewite memory in paste by applying additional vibration to the paste along different direction. Experimental results are found to be consistent with theoretical models which are based on residual stress theory.