Steerable ultrasonic source using low power laser sources and fibre optic delivery

被引：1
|
作者：
Swift, CI [1 ]
Pierce, G [1 ]
Culshaw, B [1 ]
机构：
[1] Univ Strathclyde, Dept Elect & Elect Engn, Div Optoelect, Glasgow G1 1XW, Lanark, Scotland
来源：
SMART STRUCTURES AND MATERIALS 2001: SMART STRUCTURES AND INTEGRATED SYSTEMS | 2001年 / 4327卷
关键词：
D O I：
10.1117/12.436575
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Low power laser diode sources were used in conjunction with electronically controllable time delays and fibre optic delivery arranged as a phased array to produce an electronically steerable ultrasonic source. Delays between the array elements of up to 520nS allowed steering of the fundamental longitudinal mode to be achieved at angles of up to 18 degrees, whilst low pulse powers of 3.6 muJ ensured that the testing mechanism was non-destructive. Beamsteering has been demonstrated for aluminium plates demonstrating great potential as a tool for structural assessment.
引用
收藏
页码：60 / 66
页数：7
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