Deformation and Failure Mechanisms in Carbon Nanotube–Metal Matrix Composites at High Strain Rates

高应变率下碳纳米管金属基复合材料的变形和失效机制

基本信息

  • 批准号:
    2223518
  • 负责人:
  • 金额:
    $ 58.74万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2022
  • 资助国家:
    美国
  • 起止时间:
    2022-09-01 至 2025-08-31
  • 项目状态:
    未结题

项目摘要

Carbon nanotube-metal matrix composites are a new class of material systems with desirable properties, such as higher strength, hardness, and impact resistance, making them suitable for applications in aerospace, automotive, construction, sports, space, and other industries. High- rate of deformation is encountered, e.g., in manufacturing processes or during service of the composite structures or parts, such as in dynamic sports contact and automobile collisions. The operative deformation mechanisms during high-rate loading of carbon nanotube-metal matrix composites, however, have not been adequately quantified and understood. This award supports integrated experimental and computational research at multiple scales to develop this fundamental understanding based on hypotheses. The knowledge gained will promote product quality, reliability, safety, and use of carbon nanotube-metal matrix composites applications. Furthermore, the award supports curriculum improvements, underrepresented minority student participation in summer research programs and long-term projects, and hands-on demonstrations at a public facility for STEM activities.The objective of this project is to understand how carbon nanotubes influence the mechanical properties and behavior of carbon nanotube-metal matrix composites at high strain rates, as compared to the base metal. To achieve this objective, multiple inter-related research tasks will be performed. Task 1 is to synthesize the base metal and the composite specimens by laser-based additive manufacturing and conduct quasi-static mechanical characterizations. Task 2 is to: (i) conduct Kolsky bar experiments to obtain stress-strain relations, (ii) perform in-situ X-ray imaging to observe cracks, and (iii) characterize microstructural changes due to Kolsky bar impacts. Task 3 is to: (i) conduct projectile impact experiments to measure Hugoniot elastic limit, dynamic strengths, and shock responses, (ii) characterize impact-induced structural changes, and (iii) & (iv) conduct hydrodynamic and molecular dynamic modeling to understand shock responses and dissipation mechanisms at the macro and atomic scale, respectively.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.
碳纳米管-金属基复合材料是一类新型的材料体系,具有更高的强度、硬度和抗冲击性能,适合于航空航天、汽车、建筑、体育、航天等行业的应用。例如,在制造过程中或在复合材料结构或部件的使用期间,例如在动态运动接触和汽车碰撞中,会遇到高变形率。然而,碳纳米管-金属基复合材料在高速加载过程中的工作变形机制还没有得到充分的量化和理解。该奖项支持在多个尺度上的综合实验和计算研究,以发展基于假设的基本理解。所获得的知识将促进产品质量、可靠性、安全性以及碳纳米管-金属基复合材料的应用。此外,该奖项还支持课程改进、少数族裔学生参加暑期研究项目和长期项目,以及在公共设施进行STEM活动的动手演示。该项目的目标是了解与母材相比,碳纳米管如何在高应变率下影响碳纳米管-金属基复合材料的机械性能和行为。为了实现这一目标,将执行多项相互关联的研究任务。第一项任务是通过激光加法制造合成母材和复合材料试件,并进行准静态力学表征。任务2是:(I)进行Kolsky杆实验以获得应力-应变关系,(Ii)进行原位X射线成像以观察裂纹,以及(Iii)表征由于Kolsky杆撞击引起的微观结构变化。任务3是:(I)进行弹丸撞击实验,以测量Hugoniot弹性极限、动态强度和冲击响应,(Ii)表征撞击引起的结构变化,以及(Iii)和(Iv)进行流体动力学和分子动力学建模,以分别在宏观和原子尺度上了解冲击响应和耗散机制。该奖项反映了NSF的法定使命,并通过使用基金会的智力优势和更广泛的影响审查标准进行评估,被认为值得支持。

项目成果

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Benxin Wu其他文献

A simplified predictive model for high-fluence ultra-short pulsed laser ablation of semiconductors and dielectrics
半导体和电介质高通量超短脉冲激光烧蚀的简化预测模型
  • DOI:
  • 发表时间:
    2009
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Benxin Wu;Y. Shin
  • 通讯作者:
    Y. Shin
Amplification of Plasma at Different Initial Temperatures inside a Microhole by a Short Laser Pulse and the Effect on the Hole Sidewall
  • DOI:
    10.1016/j.promfg.2016.08.059
  • 发表时间:
    2016-01-01
  • 期刊:
  • 影响因子:
  • 作者:
    Navid Dabir-Moghaddam;Sha Tao;Benxin Wu;Yung C. Shin
  • 通讯作者:
    Yung C. Shin
The Effect Of Regular Class Surveys In Mechanical Engineering Education On Teaching Quality Improvement And Students’ Evaluations
机械工程教育中定期课堂调查对教学质量提高和学生评价的影响
  • DOI:
    10.18260/1-2--5176
  • 发表时间:
    2009
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Benxin Wu
  • 通讯作者:
    Benxin Wu
Effects of microhole sidewall confinement on bubble growth and bubble-generated shock waves
微孔侧壁约束对气泡生长和气泡产生冲击波的影响
  • DOI:
  • 发表时间:
    2016
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Navid Dabir;Benxin Wu;Benxin Wu
  • 通讯作者:
    Benxin Wu

Benxin Wu的其他文献

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{{ truncateString('Benxin Wu', 18)}}的其他基金

Fundamental Research on Plasma Flow and Plasma-Solid Interactions for Laser-Induced Plasma Deburring.
激光诱导等离子体去毛刺的等离子体流和等离子体-固体相互作用的基础研究。
  • 批准号:
    1911361
  • 财政年份:
    2019
  • 资助金额:
    $ 58.74万
  • 项目类别:
    Standard Grant
Fundamental Research on a Novel Double-Pulse Laser Micro Sintering Technology
新型双脉冲激光微烧结技术基础研究
  • 批准号:
    1728481
  • 财政年份:
    2017
  • 资助金额:
    $ 58.74万
  • 项目类别:
    Standard Grant
CAREER: Fundamental Research on a Novel Ultrasound-assisted Water-confined Laser Micromachining Technology
职业:新型超声辅助水约束激光微加工技术的基础研究
  • 批准号:
    1543865
  • 财政年份:
    2015
  • 资助金额:
    $ 58.74万
  • 项目类别:
    Standard Grant
Laser-based Fabrication of Metal Nanocomposite on Flexible Substrate for Flexible Electronics with Enhanced Durability
基于激光的柔性基板上金属纳米复合材料的制造,用于具有增强耐用性的柔性电子产品
  • 批准号:
    1542376
  • 财政年份:
    2015
  • 资助金额:
    $ 58.74万
  • 项目类别:
    Standard Grant
Laser-based Fabrication of Metal Nanocomposite on Flexible Substrate for Flexible Electronics with Enhanced Durability
基于激光的柔性基板上金属纳米复合材料的制造,用于具有增强耐用性的柔性电子产品
  • 批准号:
    1405497
  • 财政年份:
    2014
  • 资助金额:
    $ 58.74万
  • 项目类别:
    Standard Grant
Collaborative Research: A Novel Dual-Pulse Laser Ablation and Plasma Amplification (LAPA) Process for Drilling Non-straight Holes with Arbitrarily Varying Diameters
合作研究:用于钻任意不同直径的非直孔的新型双脉冲激光烧蚀和等离子体放大 (LAPA) 工艺
  • 批准号:
    1266284
  • 财政年份:
    2013
  • 资助金额:
    $ 58.74万
  • 项目类别:
    Standard Grant
EAGER/Collaborative Research: Laser Sintering of Nanolayered Carbon Nanotube Paper for Functionally Gradient Ceramic Nanocomposites
EAGER/合作研究:激光烧结纳米层碳纳米管纸用于功能梯度陶瓷纳米复合材料
  • 批准号:
    1144949
  • 财政年份:
    2011
  • 资助金额:
    $ 58.74万
  • 项目类别:
    Standard Grant
CAREER: Fundamental Research on a Novel Ultrasound-assisted Water-confined Laser Micromachining Technology
职业:新型超声辅助水约束激光微加工技术的基础研究
  • 批准号:
    1055805
  • 财政年份:
    2011
  • 资助金额:
    $ 58.74万
  • 项目类别:
    Standard Grant
Collaborative Research: Electromagnetic Peening Assisted Laser Micromachining (EPALM) - A Hybrid Micromachining Process with Enhanced Mechanical Properties
合作研究:电磁喷丸辅助激光微加工 (EPALM) - 一种具有增强机械性能的混合微加工工艺
  • 批准号:
    0970079
  • 财政年份:
    2010
  • 资助金额:
    $ 58.74万
  • 项目类别:
    Standard Grant
Collaborative Research: Modeling and Analysis of High Energy Ultrashort Laser-Induced Plasmas and Shockwave
合作研究:高能超短激光诱导等离子体和冲击波的建模与分析
  • 批准号:
    0853528
  • 财政年份:
    2009
  • 资助金额:
    $ 58.74万
  • 项目类别:
    Standard Grant

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Understanding complex failure/deformation mechanisms in engineering rock mechanics through the integration of geotechnical field measurements and advanced mumerical modelling
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Symposium on "Mechanisms of Deformation and Failure in Rocksand Ceramics", to be held April 12-16, 1993, San Francisco, CA
“岩砂陶瓷变形与破坏机制”研讨会,将于 1993 年 4 月 12-16 日在加利福尼亚州旧金山举行
  • 批准号:
    9223587
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    1993
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Mechanisms of Deformation and Failure in Geologic Materials
地质材料变形和破坏的机制
  • 批准号:
    7714612
  • 财政年份:
    1978
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    $ 58.74万
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