Variables Affecting Reproducibility of the Instrumented Impact Test PDF Download
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Author: CH. Curll
Publisher:
ISBN:
Category : Alloy steels
Languages : en
Pages : 11
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Book Description
Instrumented impact test systems have been designed for determination of dynamic fracture toughness properties and utilized for the study of impact properties of materials in many laboratories. Since equipment varies from laboratory to laboratory, variations due to the equipment or instrumentation or both should be examined. This investigation studies variations in dynamic fracture toughness due to the test machine or calibration methods or both. The parameters chosen for the study are the peak load and the fracture energy. Two materials, AISI-4340 steel alloy and 6061-T6 aluminum alloy, were selected to evaluate the variation of these parameters.
Author: CH. Curll
Publisher:
ISBN:
Category : Alloy steels
Languages : en
Pages : 11
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Book Description
Instrumented impact test systems have been designed for determination of dynamic fracture toughness properties and utilized for the study of impact properties of materials in many laboratories. Since equipment varies from laboratory to laboratory, variations due to the equipment or instrumentation or both should be examined. This investigation studies variations in dynamic fracture toughness due to the test machine or calibration methods or both. The parameters chosen for the study are the peak load and the fracture energy. Two materials, AISI-4340 steel alloy and 6061-T6 aluminum alloy, were selected to evaluate the variation of these parameters.
Author: J. M. Holt
Publisher: ASTM International
ISBN: 9780803105560
Category : Electronic book
Languages : en
Pages : 155
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Author:
Publisher:
ISBN:
Category : Testing
Languages : en
Pages : 164
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Book Description
Author: John M. Holt
Publisher: ASTM International
ISBN: 0803112955
Category : Compliance
Languages : en
Pages : 219
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Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309486165
Category : Science
Languages : en
Pages : 257
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Book Description
One of the pathways by which the scientific community confirms the validity of a new scientific discovery is by repeating the research that produced it. When a scientific effort fails to independently confirm the computations or results of a previous study, some fear that it may be a symptom of a lack of rigor in science, while others argue that such an observed inconsistency can be an important precursor to new discovery. Concerns about reproducibility and replicability have been expressed in both scientific and popular media. As these concerns came to light, Congress requested that the National Academies of Sciences, Engineering, and Medicine conduct a study to assess the extent of issues related to reproducibility and replicability and to offer recommendations for improving rigor and transparency in scientific research. Reproducibility and Replicability in Science defines reproducibility and replicability and examines the factors that may lead to non-reproducibility and non-replicability in research. Unlike the typical expectation of reproducibility between two computations, expectations about replicability are more nuanced, and in some cases a lack of replicability can aid the process of scientific discovery. This report provides recommendations to researchers, academic institutions, journals, and funders on steps they can take to improve reproducibility and replicability in science.
Author: T. Horiuchi
Publisher: Springer Science & Business Media
ISBN: 1461337305
Category : Technology & Engineering
Languages : en
Pages : 384
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Book Description
The need for alternate energy sources has led to the develop ment of prototype fusion and MHD reactors. Both possible energy systems in current designs usually require the use of magnetic fields for plasma confinement and concentration. For the creation and maintenance of large 5 to 15 tesla magnetic fields, supercon ducting magnets appear more economical. But the high magnetic fields create large forces, and the complexities of the conceptual reactors create severe space restrictions. The combination of re quirements, plus the desire to keep construction costs at a mini mum, has created a need for stronger structural alloys for service at liquid helium temperature (4 K). The complexity of the required structures requires that these alloys be weldable. Furthermore, since the plasma is influenced by magnetic fields and since magnet ic forces from the use of ferromagnetic materials in many configur ations may be additive, the best structural alloy for most applica tions should be nonmagnetic. These requirements have led to consideration of higher strength austenitic steels. Strength increases at low temperatures are achieved by the addition of nitrogen. The stability of the austenitic structure is retained by adding manganese instead of nickel, which is more expensive. Research to develop these higher strength austenitic steels is in process, primarily in Japan and the United States.
Author:
Publisher:
ISBN:
Category : Electronic journals
Languages : en
Pages : 436
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Author:
Publisher:
ISBN:
Category : Oil well drilling
Languages : en
Pages : 896
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Author: K. Tachikawa
Publisher:
ISBN:
Category : Composite materials
Languages : en
Pages : 536
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Author:
Publisher:
ISBN:
Category : Metallurgy
Languages : en
Pages : 606
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