SBIR Phase I: 3-D Laser-based ultrasonic inspection system

SBIR 第一阶段：基于 3D 激光的超声波检测系统

• 批准号: 0712620
• 负责人: Bruno Pouet
• 金额: --
• 依托单位: BOSSA NOVA TECHNOLOGIES LLC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-07-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0712620&HistoricalAwards=false
• 关键词: SBIR; Phase; Laser; based; ultrasonic

This Small Business Innovation Research (SBIR) Phase I research project describes an innovative approach for Laser-Based Ultrasonic (LBU) Non-Destructive Evaluation (NDE). The proposed inspection system will allow efficient laser generation of both compression and shear waves, as well as simultaneous laser measurement of the three-component of the ultrasonic displacement. LBU has now become a valuable tool for on-line inspection, demonstrating its advantages in the steel and aerospace industries. Unfortunately, these systems do not take advantage of the whole ultrasonic information available because they are based on only the propagation of compression wave and they only measure the out-of-plane displacement. There is a strong need in NDE for both a laser generation capable of efficiently generating shear waves at normal incidence and for a laser ultrasonic receiver capable of measuring simultaneously the three-component of the ultrasonic field (i.e.: measurement of interface properties, material anisotropy or residual stress evaluation). The ability to efficiently and remotely generate both compression and shear waves combined with the ability to simultaneously and remotely measure the three-components of the ultrasonic field will be very beneficial for on-line process control as well as for research material characterization. With this proposed LBU system, NDE inspection techniques based on shear wave detection could now be carried out remotely without mechanical contact, allowing for rapid, in-process inspection of high temperature material. The industries that will benefit from this new NDE tool include: The metal industry, the aerospace industry, the automotive industry and the coating industry.

这个小型企业创新研究（SBIR）第一阶段研究项目描述了一种基于激光的超声（LBU）无损评价（NDE）的创新方法。拟议的检测系统将允许有效的激光产生的压缩波和剪切波，以及同时激光测量的三个组成部分的超声位移。LBU现已成为在线检测的重要工具，在钢铁和航空航天工业中展示了其优势。不幸的是，这些系统没有利用可用的整个超声信息，因为它们仅基于压缩波的传播，并且它们仅测量平面外位移。在无损检测中，强烈需要能够有效地产生垂直入射的剪切波的激光发生器和能够同时测量超声场的三个分量（即：界面特性测量、材料各向异性或残余应力评估）。有效地和远程产生压缩波和剪切波的能力，结合同时和远程测量超声场的三个分量的能力，将是非常有益的在线过程控制以及研究材料表征。有了这个拟议的LBU系统，基于剪切波检测的NDE检测技术现在可以在没有机械接触的情况下远程进行，从而可以对高温材料进行快速的过程中检测。将受益于这种新的无损检测工具的行业包括：金属工业，航空航天工业，汽车工业和涂料工业。