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Impact Toughness of Balloon Films
1969To increase the reliability and extend the capabilities of scientific ballooning, polyethylene balloon films were measured for impact toughness at +23 and -80 C, using equipment developed for measuring the energy absorbed by or upon diaphragm fracture.
Hauser Research and Engineering Company +2 more
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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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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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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 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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Informativeness of measurements of impact toughness
Metal Science and Heat Treatment, 2008Measurements of the geometry of a specimen and a fracture are a useful supplement to measurements of the impact toughness and are more reliable than the determination of the “fraction of the ductile component.” Optimum (with respect to the maximum likelihood principle) estimation of the reliability of the shift of serial curves of impact toughness and ...
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Effect of cobalt on impact toughness of steels
Materials Science and Technology, 1994AbstractThe addition of Co to 18%Ni maraging steels produces an increase in hardness due to a synergistic effect. A similar effect is reported in this paper for maraging steels based on Fe–5Mn–6Ni. However, Co is thought to have an effect on the ductile-brittle transition temperature (DBTT) of mar aging steels.
D. R. Squires, E. A. Wilson
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Impact fracture toughness tests on polymers
Polymer Engineering & Science, 1990AbstractA series of impact tests are described in which the plane strain fracture toughness, Kc1, of five different polymers is measured using a three point bend specimen at striker speeds up to 5m/s. At low speeds Kc1 is determined using the maximum load and a static analysis, but at speeds greater than 1 m/s the dynamic effects render the load signal
G. C. Adams +3 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 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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