[22p-B202-1~16] 1.6 Ultrasonics

2:00 PM - 2:15 PM JST(5:00 AM - 5:15 AM UTC)

[22p-B202-3] Measurement of hardened layer thickness by sub-MHz laser ultrasonic surface waves

〇Yong Lee¹, So Kitazawa¹ (1.Hitachi,Ltd. R&D Gr.)

Keywords:

Laser ultrasonic technology,Hardened layer,Sub-MHz surface wave

We studied measurement of the thickness of hardened layers (3 mm thickness) using sub-MHz surface waves and found it was effective for measuring the thickness of hardened layers with high accuracy.