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Polymer toughness and impact resistance
Polymer Engineering & Science, 1999AbstractThis report is a review of the factors that influence the impact resistance of high polymers, with an emphasis on crystalline polymers. The phenomenology of polymeric fracture is examined, including brittle and ductile failure, and the ductile‐brittle transition temperature (DBTT). An in‐depth discussion of the effects of crystalline morphology
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Impact toughness of carbon steels
Metal Science and Heat Treatment, 19751. The work of crack propagation increases when the tempering temperature for quenched carbon structural steels is raised from 400 to 600°. 2. With tempering of quenched carbon steels to the same hardness the impact toughness and work of crack propagation at room temperature vary little with a change of the carbon content from 0.3 to 0.5%
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Impact modifier boosts toughness of films
Plastics, Additives and Compounding, 2008Films are among the most important products to be made of polyolefins. Since they are primarily mass-produced, even slight reductions in the film thickness have the potential to lead to considerable savings. Robert Huber and Jorg Auffermann of BASF explain how Styroflex® 2G 66 SBS block copolymer can be used to increase the puncture resistance and the ...
Robert Huber, Jörg Auffermann
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Impact toughness of nanostructured titanium
Metal Science and Heat Treatment, 2007The temperature dependence of the impact toughness of commercial purity titanium in coarse-grained and nanostructured states is studied. The method of transmission electron microscopy is used to investigate the structure of the initial nanostructured titanium.
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Impact Toughness of Isothermally Treated Duplex Stainless Steels
MRS Proceedings, 2014ABSTRACTDuplex stainless steels (DSS) have good mechanical and corrosion resistance properties which allow their application in very aggressive environments. However, their aging at 600–1000 °C causes the precipitation of dangerous intermetallic phases, resulting in serious detrimental effects on their interesting properties. These secondary phases are
CALLIARI, IRENE +4 more
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Phase morphology and impact toughness of impact polypropylene copolymer
Polymer, 2005Abstract Factors influencing the impact toughness of two impact polypropylene copolymers (IPC) with almost the same ethylene content, molecular weight and molecular weight distribution were studied by temperature gradient extraction fractionation (TGEF), scanning electron microscopy (SEM), nuclear magnetic resonance (NMR) and differential scanning ...
Hongsheng Tan +4 more
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Impact Toughness of Mower Blades
SAE Technical Paper Series, 1994<div class="htmlview paragraph">The purpose of this work is to improve the safety and durability of agricultural and off highway rotary cutter blades. Field experience has resulted in specifying low blade hardness to prevent catastrophic impact failure and the obvious safety concerns.
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Impact notch toughness of high-strength porous steels
Materials Science and Engineering: A, 1999Abstract Instrumented impact testing was used to investigate the effect of both notch severity and matrix strength on the impact fracture behaviour of different Fe–Mo–C high-strength steels produced by powder metallurgy, in the as-sintered as well as in the heat-treated condition.
Straffelini, Giovanni +2 more
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Fracture and Impact Toughness of Syntactic Foam
Journal of Cellular Plastics, 2004In this study we assessed the fracture toughness, KIc, and the impact resistance of syntactic foam reinforced with glass microspheres of different densities and polymer binder as a function of microstructures. The results showed that both KIc and the linear elastic energy release rate, GIc, increased with increasing volume fraction of glass ...
Erwin M. Wouterson +3 more
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Impact fracture toughness of polyvinyl chloride
Colloid and Polymer Science, 1974The strain rate sensitivity of a rigid polyvinyl chloride has been investigated over a range of temperatures (−197 to 80 °C) and Linear Elastic Fracture Mechanics has been applied to evaluate the results. Tests onCharpy type1) specimens provided with sharp notches were carried out at two widely different strain rates; in “static” conditions and in a ...
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