CMMI-EPSRC: Thermoacoustic Response of Additively Manufactured Metals: A Multi-Scale Study from Grain to Component Scales
CMMI-EPSRC:增材制造金属的热声响应:从晶粒到部件尺度的多尺度研究
基本信息
- 批准号:2027082
- 负责人:
- 金额:$ 74.84万
- 依托单位:
- 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 2024-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This research project was funded under the NSF Engineering–UKRI Engineering and Physical Sciences Research Council opportunity, NSF 20-510. The grant will support research towards understanding the potential for additive manufacturing (AM) in the production of metallic components subject to extreme thermomechanical excitation. Structures in demanding environments where high temperatures and vibratory loads are combined (e.g., sustained hypersonic flight, space re-entry, exhaust-wash structures, breeder blankets in fusion reactors) often experience fatigue which shortens their lifecycle. It is likely that these types of structures will be produced only in small quantities, making it appropriate to consider additive manufacturing for their construction. Successful design, manufacture and service deployment of such components requires an understanding of the component's progression from its virgin state, through shake-down, towards initiation of detectable non-critical damage, and ultimately to failure. To date, this failure evolution process is fairly well understood for traditional subtractive-manufactured metals. However, there is very limited fundamental understanding of the multi-scale material-structure interactions for failure of AM metals. Because of the unique microstructure of AM metals, their complex thermal history during manufacture, and the presence of significant residual stresses, it is hypothesized that their response under extreme thermoacoustic loading will be significantly different from their traditional counterparts, especially in defect-driven processes such as failure. By understanding the details of this failure process in AM metals under extreme thermoacoustic loading, the results of this study will shed light onto how to better tailor the additive manufacturing approach to produce materials and structures most suitable for operating in such adverse environments.The research will be undertaken jointly by the PI in collaboration with researchers at the University of Liverpool in the United Kingdom, focusing on key aspects that link material-level (micro- and mesoscale) response to the structural-level (macroscale) response. Damage accumulation at the microscale for additively-manufactured metals subjected to cyclic loading and global and local thermal gradients will be quantified using high resolution digital image correlation. At a larger length scale, additively-manufactured plates with geometric reinforcement subjected to thermal buckling during thermo-mechanical excitation will be studied using real-time optical and thermal imaging. A key aspect will be to explore the interaction of the complex thermal processing history of AM metals (including any existing residual stresses) with the transient and coupled thermomechanical loading applied. Finally, the project will identify the fundamental rules governing AM for reliable components subject to high-temperature broadband excitation.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.
本研究项目由NSF工程- ukri工程和物理科学研究委员会资助,NSF 20-510。该资助将支持研究,以了解增材制造(AM)在极端热机械激励下金属部件生产中的潜力。在高温和振动载荷结合的苛刻环境中的结构(例如,持续高超音速飞行,空间再入,排气清洗结构,聚变反应堆中的增殖毯)经常经历疲劳,从而缩短其生命周期。这些类型的结构很可能只会少量生产,因此考虑使用增材制造来建造它们是合适的。此类组件的成功设计、制造和服务部署需要了解组件从初始状态、经过振动、开始可检测的非关键损坏、最终失效的过程。迄今为止,对于传统的减法制造金属,这种破坏演化过程已经得到了很好的理解。然而,对AM金属失效的多尺度材料-结构相互作用的基本理解非常有限。由于增材制造金属独特的微观结构、制造过程中复杂的热历史以及存在显著的残余应力,假设它们在极端热声载荷下的响应将与传统金属显著不同,特别是在缺陷驱动的过程中,如失效。通过了解极端热声载荷下增材制造金属失效过程的细节,本研究的结果将揭示如何更好地定制增材制造方法,以生产最适合在这种恶劣环境下运行的材料和结构。该研究将由PI与英国利物浦大学的研究人员合作共同进行,重点关注材料水平(微观和中尺度)反应与结构水平(宏观尺度)反应之间的关键方面。利用高分辨率数字图像相关技术,对加材制造金属在循环载荷和全局和局部热梯度作用下的微尺度损伤积累进行量化。在更大的长度尺度上,将使用实时光学和热成像技术研究在热机械激发过程中遭受热屈曲的几何增强的加材制造板。一个关键方面将是探索增材制造金属的复杂热加工历史(包括任何现有的残余应力)与瞬态和耦合热机械载荷的相互作用。最后,该项目将确定受高温宽带激励的可靠部件的增材制造基本规则。该奖项反映了美国国家科学基金会的法定使命,并通过使用基金会的知识价值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
期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Measuring representative volume elements from high‐resolution grain‐scale strain fields
测量高分辨率颗粒尺度应变场中的代表性体积元素
- DOI:10.1111/str.12423
- 发表时间:2022
- 期刊:
- 影响因子:2.1
- 作者:B. Vieira, Renato;Lambros, John
- 通讯作者:Lambros, John
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John Lambros其他文献
Mixed mode asymptotic crack tip fields in orthotropic materials: Derivation and range of dominance
- DOI:
10.1023/a:1023305223672 - 发表时间:
2002-01-01 - 期刊:
- 影响因子:2.500
- 作者:
Santosh Prabhu;John Lambros - 通讯作者:
John Lambros
Experimental Validation of an Additively Manufactured Stiffness-Optimized Short-Fiber Reinforced Composite Clevis Joint
增材制造刚度优化短纤维增强复合材料 U 形接头的实验验证
- DOI:
10.1007/s11340-019-00514-2 - 发表时间:
2019 - 期刊:
- 影响因子:2.4
- 作者:
Yuta Saito;F. Fernández;D. Tortorelli;W. S. Compel;James P. Lewicki;John Lambros - 通讯作者:
John Lambros
Giant Right Atrium in an Adult: Case Report of a Rare Condition
- DOI:
10.1016/j.hlc.2011.06.007 - 发表时间:
2012-01-01 - 期刊:
- 影响因子:
- 作者:
Sean Gomes;Hugh Wolfenden;John Lambros - 通讯作者:
John Lambros
Effect of mode mixity on K-dominance and three dimensionality in cracked plates
- DOI:
10.1023/a:1007653105374 - 发表时间:
2000-01-01 - 期刊:
- 影响因子:2.500
- 作者:
Santosh Prabhu;John Lambros - 通讯作者:
John Lambros
John Lambros的其他文献
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{{ truncateString('John Lambros', 18)}}的其他基金
GOALI: Understanding Light-weight Transparent Ceramic Mechanical Response: From Single Grain Boundary to Bulk Material
GOALI:了解轻质透明陶瓷机械响应:从单晶界到散装材料
- 批准号:
1825466 - 财政年份:2018
- 资助金额:
$ 74.84万 - 项目类别:
Standard Grant
Rate Effects on the Material and Interfacial Failure of Thin Films From Static to Dynamic Loading
从静态加载到动态加载对薄膜材料和界面失效的速率影响
- 批准号:
0555787 - 财政年份:2006
- 资助金额:
$ 74.84万 - 项目类别:
Standard Grant
US-Turkey Cooperative Research: Three-Dimensional Effects in the Fracture of Functionally Graded Materials
美国-土耳其合作研究:功能梯度材料断裂的三维效应
- 批准号:
0322271 - 财政年份:2003
- 资助金额:
$ 74.84万 - 项目类别:
Standard Grant
CAREER: Fundamental Problems in Dynamic Fracture Mechanics
职业:动态断裂力学的基本问题
- 批准号:
0296130 - 财政年份:2000
- 资助金额:
$ 74.84万 - 项目类别:
Standard Grant
Analytical and Experimental Study of Crack-Interface Interactions in Continuously Inhomogeneous Solids (CIM's)
连续非均匀固体 (CIM) 中裂纹界面相互作用的分析和实验研究
- 批准号:
0296105 - 财政年份:2000
- 资助金额:
$ 74.84万 - 项目类别:
Continuing Grant
CAREER: Fundamental Problems in Dynamic Fracture Mechanics
职业:动态断裂力学的基本问题
- 批准号:
9874775 - 财政年份:1999
- 资助金额:
$ 74.84万 - 项目类别:
Standard Grant
Acquisition of a Synchronous Laser Pullsing System for High Speed Camera Imaging
获取用于高速相机成像的同步激光牵引系统
- 批准号:
9800263 - 财政年份:1998
- 资助金额:
$ 74.84万 - 项目类别:
Standard Grant
Analytical and Experimental Study of Crack-Interface Interactions in Continuously Inhomogeneous Solids (CIM's)
连续非均匀固体 (CIM) 中裂纹界面相互作用的分析和实验研究
- 批准号:
9712831 - 财政年份:1997
- 资助金额:
$ 74.84万 - 项目类别:
Continuing Grant
Engineering Research Equipment: High Speed Infra Red Radiation Detector System for Use in Thermographic Measurements in Dynamically Deforming Advanced Materials
工程研究设备:用于先进材料动态变形热成像测量的高速红外辐射探测器系统
- 批准号:
9622241 - 财政年份:1996
- 资助金额:
$ 74.84万 - 项目类别:
Standard Grant
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