Results 261 to 270 of about 5,630 (304)
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2010
Cellular materials are used as impact energy absorbers due to their large densification strain at the plateau stress during the plastic compression. For a cellular rod struck by a rigid object, the critical impact velocity is determined. If the impact velocity is higher than the critical impact velocity, the elastic wave will be followed by plastic ...
Henry Tan, S. Qu
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Cellular materials are used as impact energy absorbers due to their large densification strain at the plateau stress during the plastic compression. For a cellular rod struck by a rigid object, the critical impact velocity is determined. If the impact velocity is higher than the critical impact velocity, the elastic wave will be followed by plastic ...
Henry Tan, S. Qu
openaire +3 more sources
The Impact Crater as a Habitat: Effects of Impact Processing of Target Materials
Astrobiology, 2003Impact structures are a rare habitat on Earth. However, where they do occur they can potentially have an important influence on the local ecology. Some of the types of habitat created in the immediate post-impact environment are not specific to the impact phenomenon, such as hydrothermal systems and crater lakes that can be found, for instance, in post-
Cockell, Charles S. +2 more
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Simplicity as a Route to Impact in Materials Research
Advanced Materials, 2017Materials scientists and engineers desire to have an impact. In this Progress Report we postulate a close correlation between impact – whether academic, technological, or scientific – and simple solutions, here defined as solutions that are inexpensive, reliable, predictable, highly performing, “stackable” (i.e., they can be combined and compounded ...
Tian XC +5 more
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2006
Materials as constituents of products or components of technical systems rarely exist in isolation and many must cope with exposure in the natural world. This chapter describes methods that simulate how a material is influenced through contact with living systems such as microorganisms and arthropods.
Ina Stephan +10 more
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Materials as constituents of products or components of technical systems rarely exist in isolation and many must cope with exposure in the natural world. This chapter describes methods that simulate how a material is influenced through contact with living systems such as microorganisms and arthropods.
Ina Stephan +10 more
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Material moderation of plantar impact stress
Medicine & Science in Sports & Exercise, 1989The ability of sport shoe midsole materials to attenuate impact loads was assessed. The three materials examined were mechanically characterized as a stiff spring (STS), subordinate spring/dominant damper (SS/DD), and dominant spring/subordinate damper (DS/SD). Each material was used as the midsole in one pair of basketball shoes.
T S, Gross, R P, Bunch
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Impact Metamorphism of Lunar Surface Materials
Science, 1970Silicate grains from Tranquillity Base have shock-induced features ranging from internal fragmentation through complete disruption of the lattice to thermal melting. Half the crystalline grains with diameters less than 125 micrometers have features of shock equivalent to those produced in the laboratory at pressures greater than about 40 kilobars.
W, Quaide, T, Bunch, R, Wrigley
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Bioinspired hierarchical impact tolerant materials
Bioinspiration & Biomimetics, 2020The quest for new light-weight materials with superior mechanical properties is a goal of materials scientists and engineers worldwide. A promising route in this pursuit is drawing inspiration from nature to design and develop materials with enhanced properties.
Susana Estrada +5 more
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2001
It has been known for several centuries that air pollutants emitted by burning of fossil fuels have a serious impact on buildings. The effects include loss of mechanical strength, leakage and failure of protective coatings due to degradation of materials.
Rainer Friedrich, Peter Bickel
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It has been known for several centuries that air pollutants emitted by burning of fossil fuels have a serious impact on buildings. The effects include loss of mechanical strength, leakage and failure of protective coatings due to degradation of materials.
Rainer Friedrich, Peter Bickel
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Allergenic impact of inhaled arthropod material
Clinical Reviews in Allergy, 1985We have reviewed a number of aeroallergens, derived from arthropods, that can induce allergic respiratory illnesses. The insects and acarids responsible often are easily overlooked or, if evident, have allergenic impacts that are not well recognized. Use of techniques such as RAST, RAST inhibition, and assays of mediators from both passively sensitized
B, Kang, J L, Chang
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