MRI-R2: Acquisition of a Scanning Laser Doppler Vibrometer System

MRI-R2：获取扫描激光多普勒测振仪系统

• 批准号: 0959858
• 负责人: Thomas Huber
• 金额: $ 31万
• 依托单位: Gustavus Adolphus College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-02-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0959858&HistoricalAwards=false
• 关键词: MRI; R2; Acquisition; Scanning; Laser

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This project will acquire a scanning vibrometer for a multi-disciplinary research program. A vibrometer uses the Doppler shift of a reflected laser beam to measure the vibration of objects without contact. In this project, the vibrometer will be used to investigate the ultrasound radiation force excitation technique; this technique uses the interference between two ultrasound sources to vibrate macroscopic and microscopic objects without contact. The other major goal of the project is to use the scanning vibrometer for research in musical acoustics. To produce their characteristic tones, musical instruments are sophisticated systems that often involve nonlinear oscillators, coupled to complex resonant structures. The project will enable a more thorough understanding of how these musical instruments work. Undergraduate students will be involved in all aspects of the research. Measurements obtained using the vibrometer will lead to a better understanding of the unique capabilities available using ultrasound radiation force excitation of microcantilevers. This may impact areas that rely on the vibration of microcantilevers, including ultras-sensitive mass detection and atomic force microscopy. The musical acoustic studies will have an impact because of the close collaboration between academic researchers and actual instrument builders. Undergraduate students will have the opportunity to collaborate with well-known researchers who will have remote access to the scanning vibrometer through Gustavus? cyber-enabled acoustics lab. Students and the general public will benefit from classroom demonstrations in acoustics and oscillations that use the scanning vibrometer via the cyber-enabled lab or web. Results will be disseminated widely in presentations, publications, and via a web site.

该奖项是根据2009年的《美国回收与再投资法》（Prife Law 111-5）资助的。该项目将为多学科研究计划获得扫描振动仪。振动仪使用反射激光束的多普勒偏移来测量没有接触的物体的振动。在该项目中，振动仪将用于研究超声辐射力激发技术。该技术使用两个超声源之间的干扰来振动宏观和微观物体，而无需接触。该项目的另一个主要目标是将扫描振动仪用于音乐声学研究。为了产生其特征色调，乐器是经常涉及非线性振荡器的复杂系统，并与复杂的谐振结构结合在一起。该项目将使这些乐器如何运作更彻底地了解。本科生将参与研究的各个方面。使用振动仪获得的测量结果将更好地理解使用微型电位的超声辐射力激发可用的独特功能。这可能会影响依赖于微型管理器振动的区域，包括超敏感的质量检测和原子力显微镜。音乐声学研究将产生影响，因为学术研究人员与实际仪器建造者之间的密切合作。本科生将有机会与著名的研究人员合作，他们将通过Gustavus远程访问扫描振动仪？支持网络的声学实验室。学生和公众将受益于通过支持网络的实验室或网络使用扫描振动仪的声学和振荡的课堂演示。结果将在演讲，出版物和通过网站中广泛传播。