3910 モアレ干渉法による分岐切欠周辺の応力場測定(S17-2 光学的手法,S17 実験力学における最近の展開)
詳細
Stress intensity factor of bifurcated notches are obtained by measuring opening displacement with Moire interfrometry. The bifurcation angle is 13.5 degrees that is the angle of bifurcation of fast propagating cracks. The measurement results say that the stress intensity factor of a bifurcated notch has the same value as that of the single notch whose length is the same as that of the bifurcated notch. This is caused by the small bifurcation angle.
