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CAREER: Adaptive Origami Structures for Acoustic Wave Guiding

职业：用于声波导的自适应折纸结构

基本信息

批准号：
2054970
负责人：
Ryan Harne
金额：
$ 50万
依托单位：
Pennsylvania State Univ University Park
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-09-01 至 2024-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2054970&HistoricalAwards=false
关键词：
CAREER Adaptive Origami Structures Acoustic

项目摘要

Ability to guide acoustic waves is central to a wide range of applications from cancer treatment to underwater ecosystem monitoring. Acoustic wave guiding techniques are widely used in medical and engineering applications such as ultrasound, sound projection used in public announcement systems, underwater ecosystem monitoring, and several defense applications. The state-of-the-art methods use fixed locations of acoustic transducers and digitally controlled signals to manage their wave guiding ability. These methods often tend to be inaccurate as they suffer from inherent ambiguity in locating virtual source or receiver. This limits their ability to do effective wave guiding. This Faculty Early Career Development Program (CAREER) project will significantly enhance the state-of-the-art in wave guiding capability by innovative use of origami science. The research will investigate reconfigurable and adaptive origami-inspired acoustic transducers that can achieve simple yet highly effective wave guiding. The portability of these origami-inspired transducer arrays will propel new applications in health care, ecosystem monitoring, and defense. This project will make new contributions to the knowledge base in acoustic wave guiding. The project also has significant involvement of students at all levels from elementary to graduate. By harnessing the technical themes of folding origami structures in an integrated research-education program, this CAREER project will redress waning student exposures and interest in acoustics by a multi-faceted initiative that will introduce, immerse, and instill acoustic principles for student groups at many levels.This CAREER project will establish analytical and computational tools to yield understanding on how origami-inspired, adaptive acoustic structures may transform wave guiding practices. The modeling framework will bridge acoustics, geometry, and mechanics via non-dimensional, spatial Fourier transforms to illuminate linear/nonlinear wave guiding phenomena and enable clear contrast with digital control methods and ideal acoustic radiators/receivers. The experimentally validated framework will reveal correlations among tessellation geometry, folding extent, and wavelength for scale-free wave guiding principles, while contrast between virtual and physical transducer positioning will expose origins of deficiencies in digital wave field control methods and guide attention to prime combinations of origami-inspired and digitally controlled wave guiding. A reversal of the framework will enable the design tessellated arrays for desired acoustic wave guiding properties, and will broadly advance multiphysics optimization of folding structures.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

引导声波的能力对于从癌症治疗到水下生态系统监测的广泛应用至关重要。声波引导技术广泛用于医学和工程应用中，例如超声波、公共广播系统中使用的声音投影、水下生态系统监测以及若干国防应用。最先进的方法使用声换能器的固定位置和数字控制信号来管理它们的波引导能力。这些方法往往不准确，因为它们在定位虚拟源或接收器时存在固有的模糊性。这限制了它们进行有效波导的能力。这个教师早期职业发展计划（CAREER）项目将通过创新使用折纸科学来显着提高最先进的波引导能力。该研究将研究可重构和自适应折纸启发的声学换能器，可以实现简单而高效的波导。这些折纸启发的传感器阵列的便携性将推动医疗保健，生态系统监测和国防领域的新应用。本课题的研究将为声波导学的知识库做出新的贡献。该项目还吸引了从小学到研究生的各级学生的大量参与。通过在一个综合的研究教育计划中利用折纸结构的技术主题，这个CAREER项目将通过多方面的倡议来纠正学生对声学的兴趣和兴趣，该倡议将在多个层次上为学生群体介绍，沉浸和灌输声学原理。这个CAREER项目将建立分析和计算工具，以了解折纸启发，自适应声学结构可以改变波导实践。建模框架将通过无量纲空间傅立叶变换来桥接声学、几何学和力学，以阐明线性/非线性波导现象，并与数字控制方法和理想的声辐射器/接收器形成清晰的对比。实验验证的框架将揭示镶嵌几何形状之间的相关性，折叠程度，和无标度波导原理的波长，而虚拟和物理换能器定位之间的对比将暴露在数字波场控制方法的缺陷的起源，并引导注意折纸启发和数字控制波导的主要组合。该框架的逆转将使设计棋盘形阵列所需的声波引导性能，并将广泛推进折叠结构的多物理场优化。该奖项反映了NSF的法定使命，并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。