2022 Assessment of the DEVCOM Army Research Laboratory (2024) / Chapter Skim
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3 Terminal Effects
3 Terminal Effects
Pages 35-42
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From page 35... ...
is seen as a powerful pathway to improvements in the terminal effects overall portfolio and a driving pathway to the development of physically based predictive models to support future design and performance capabilities. As increasingly more complex physics is introduced into ARL's design and performance simulation computer codes, continued efforts to include quantification of uncertainty, margin, and errors in both experiments and modeling is to be strongly encouraged toward improving predictive tools.
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From page 36... ...
TECHNICAL QUALITY OF THE CORE COMPETENCY RESEARCH Armor Mechanisms and Countermeasure Core Competency Research Portfolio Challenges and Opportunities The armor mechanisms and countermeasure core competency focuses on the discovery and advancement of techniques to minimize or eliminate lethal effects at minimum space, weight, and power.2 The presentation "Architectured Materials for Controlling Dynamic Behavior" focused on a new Multidisciplinary University Research Initiative (MURI) on graph topology and network science–enabled design of irregular or disordered metamaterial structures for manipulating stress, which aims toward controlling dynamic behavior through architecture materials.
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From page 37... ...
This open web-based resource offers access to information on known and predicted materials as well as powerful analysis tools to design novel materials.5 o Materials Resource Registry helps the materials community to search for and find information about materials. This National Institute of Standards and Technology– developed, web-based registry operates as a centrally located service, allowing users to register materials data sets and other resources, bridging the gap between existing resources and end users by making all registered information searchable and available for research to the materials community.6 o nanoHUB is a website that provides open access to simulation as well as new ML tools in nanotechnology and materials science for research as well as education and training purposes.7 o The Cambridge Crystallographic Data Centre is a compilation of crystal structures and perhaps the best and widely used example for a materials data repository.
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From page 38... ...
Mechanisms for Lethal Target Interactions Core Competency Accomplishments and Advancements The mechanisms for lethal target interactions core competency is defined by the discovery and advancement of weapon and target interactions to maximize the effectiveness and efficiency of munitions to provide lethal overmatch across all calibers and platforms.11 The research methodology within this core competency appeared to have a heavy emphasis on experiments, although modeling to guide experimental investigations was seen in some areas. The overall scientific quality of the experiments is high, with the methods and diagnostics comparable to research conducted at other top academic and government facilities.
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From page 39... ...
The main scientific thread running through this core competency is the study of fracture and failure of materials with the objective of developing predictive capabilities to further the process of materials selection and design. This is being accomplished through development of an understanding of the underlying unit processes and then enriching the tools as needed with the appropriate physics.
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From page 40... ...
The core competency would benefit from seeing the stakeholder requirements for improved performance in the various research areas being pursued, in order to help judge the significance of the technology gap and whether additional staff or resources need to be recommended for work in the area. The overall level of scientific and engineering staff across the breath of the terminal effects mechanics, modeling, and simulation core competency within ARL's overall terminal effects portfolio (both ARD and ARO)
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From page 41... ...
The spectrum of science and technology, as well as modeling and simulations applied to both armor design and ballistic development, demonstrated a broad array of technical approaches and flexible and rapid response to a very rapidly evolving threat environment facing the warfighter. Continued building of linkages within ARL's terminal effects programs with emphasis on the ties between PSPP is seen as a powerful pathway to improvements in the terminal effects overall portfolio, across all four core competencies, and a driving pathway to the development of physically based predictive models to support future design and performance capabilities.
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From page 42... ...
42 2022 ASSESSMENT OF THE DEVCOM ARMY RESEARCH LABORATORY "The Role of Grain Size and Microstructure in the Shock Response of Metals" results suggesting an ability to suppress shock hardening in a material via processing to manufacture nanocrystalline materials germane to SCJs and EFPs.
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