An Introduction to Materials by Design Including a Dynamic Stress Environment

McCauley, James W.

doi:10.1002/9781119100430.ch1

Cited by 6 publications

(8 citation statements)

References 20 publications

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“…Second major DARPA initiatives: 1986 -1992: DARPA A/AA programs 15,16 The operations in the Middle East in the 1990s and early 2000s resulted in new policy and planning activities and increasing demand for improved light weight opaque and transparent armor. Supplies had to be raised in case of expanding military operations.…”

Section: 3mentioning

confidence: 99%

Institutional and technical history of requirements‐based strategic armor ceramics basic research leading up to the multiscale material by design materials in extreme dynamic environments (MEDE) program. Part I. Brief history of institutional changes and relevant major research programs

McCauley

Ramesh

2023

Int J Ceramic Engine & Sci

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History, beginning in the late 1960s during the Vietnam war, of the institutional changes that took place because of various military operations and the resulting changes in policies and requirements in the Department of Defense and the Army: Army Force XXI, DDRE, and Army After Next; this will include the evolution of personnel and vehicle protection materials and the impact of major DARPA programs. The new requirements emphasized light weight and changes in the basic research approach, which led to the approval of a strategic research objective, “Armor Materials by Design.” At the same time, there were other National planning activities, workshops, and conferences advocating for the armor materials by design vision and the use of “figures of merit.” The Army Research Laboratory responded to these initiatives by initiating an “Enterprise for Multiscale Research of Materials” leading to the funding of a revolutionary new collaborative research program on “materials in extreme dynamic environment.” The role of the ARL Materials Center of Excellence will also be included.

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Section: 3mentioning

confidence: 99%

Institutional and technical history of requirements‐based strategic armor ceramics basic research leading up to the multiscale material by design materials in extreme dynamic environments (MEDE) program. Part I. Brief history of institutional changes and relevant major research programs

McCauley

Ramesh

2023

Int J Ceramic Engine & Sci

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“…Preceramic polycarbosilane polymers are commonly used as precursors to make ceramic fibers 10,39 and ceramic matrix. [7][8][9]40,41 The chemical and volume changes that accompany ceramization of the polymer during pyrolysis have been documented in several studies. For example, see Refs [39][40][41][42].…”

Section: ζ-Factor Microanalysismentioning

confidence: 99%

“…A materials‐by‐design approach is currently being undertaken to accelerate the development of future generations of high‐performance ceramics, metals, and composites. The design approach involves iterations of physically based simulations, 1–3 material processing, 4,5 and bulk material testing, 6–8 which in this combination, completes a “materials‐by‐design loop” 9 . Boron carbide 10 is being researched as a model system due to its ultrahigh hardness and low density 11,12 .…”

Section: Introductionmentioning

confidence: 99%

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Applications of analytical electron microscopy to guide the design of boron carbide

et al. 2021

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A materials-by-design approach is currently being undertaken to accelerate the development of future generations of high-performance ceramics, metals, and composites. The design approach involves iterations of physically based simulations, 1-3 material processing, 4,5 and bulk material testing, [6][7][8] which in this combination, completes a "materials-by-design loop". 9 Boron carbide 10 is being researched as a model system due to its ultrahigh hardness and low density. 11,12 Within this effort, research has focused on understanding the effects of microstructure and composition on the physical mechanisms which govern the inelastic response of boron carbide during high-rate, large deformation, and non-hydrostatic loading conditions typical of ballistic events. These mechanisms include bulk quasi plasticity, 13,14 stress-induced amorphization, [15][16][17][18] fracture and fragmentation, 7,19-21 and granular flow. 22 It has also been discovered/validated that mechanical performance of boron carbide (i.e., hardness

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“…According to [7], it was found that the cone angle increases with an increase in Poisson's ratio for large diameter strikers and thus has a higher ballistic efficiency. When Poisson's ratio changes from 0.1 to 0.3, the angle changes from 60° to 70°.…”

Section: Introductionmentioning

confidence: 99%

About the Criteria for the Choice of Materials to Protect Against the Mechanical Dynamic Loading

et al. 2021

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A criterion for the selection of materials to protect against the mechanical dynamic loading is proposed and substantiated. The mechanisms of the fracture of brittle ceramic materials that are widely used in structures that prevent penetration and are very common in practice are discussed. Unlike other estimates, the proposed formula is based on the physical principle of comparing the total energies of loading and obstacles, and is in good agreement with the experimental data.

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An Introduction to Materials by Design Including a Dynamic Stress Environment

Cited by 6 publications

References 20 publications

Institutional and technical history of requirements‐based strategic armor ceramics basic research leading up to the multiscale material by design materials in extreme dynamic environments (MEDE) program. Part I. Brief history of institutional changes and relevant major research programs

Institutional and technical history of requirements‐based strategic armor ceramics basic research leading up to the multiscale material by design materials in extreme dynamic environments (MEDE) program. Part I. Brief history of institutional changes and relevant major research programs

Applications of analytical electron microscopy to guide the design of boron carbide

About the Criteria for the Choice of Materials to Protect Against the Mechanical Dynamic Loading

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