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The presence of residual stress seriously affects the mechanical performance and reliability of engineering components. Here, the authors propose a novel method to determine corresponding residual stress through micro-hardness measurements of machined ...
Gonghou Yao, Zhanqiang Liu, Haifeng Ma
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Although, surface roughness can influence the determination of elastic moduli and indentation hardness to some extent by instrumented spherical indentation test, limited work has been done to quantitatively reveal and minimize these influences.
Guangjian Peng+5 more
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Indentation Size Effect of Composite A356 + 6%FA Subjected to ECAP
In this study, metal matrix-based composite (MMC) was subjected to Equal Chanel Angular Pressing (ECAP) in several passes to determine the influence of deformation on the hardness of the samples. Composite based on A356 aluminum alloy and reinforced with
Merima Muslić+3 more
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Martens Hardness of CAD/CAM Resin-Based Composites
(1) Background: The properties of CAD/CAM resin-based composites differ due to differences in their composition. Instrumented indentation testing can help to analyze these differences with respect to hardness, as well as energy-converting capabilities ...
Martin Rosentritt+4 more
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The article is devoted to modification of the impact devices of Leeb hardness testers for the implementation of the dynamic instrumented indentation method.
Aleksander Umanskii+3 more
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There is expanded interest in the long-standing subject of the hardness properties of materials. A major part of such interest is due to the advent of nanoindentation hardness testing systems which have made available orders of magnitude increases in ...
Ronald W. Armstrong+2 more
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On the Invariance of Hardness at Vickers Indentation of Pre-Stressed Materials
The influence from residual surface stresses on global indentation properties, i.e., hardness and size of the contact area, have been studied quite frequently in recent years.
Per-Lennart Larsson
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An algorithm for indentation image classification and detection based on deep learning
In the measurement of hardness value, indentation is the key to obtain the hardness value. Traditional manual detection of indentation is inefficient, time-consuming and low accuracy.
Chen Shilin, Shi Wei
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Effect of Heavy Ion Irradiation Dosage on the Hardness of SA508-IV Reactor Pressure Vessel Steel
Specimens of the SA508-IV reactor pressure vessel (RPV) steel, containing 3.26 wt. % Ni and just 0.041 wt. % Cu, were irradiated at 290 °C to different displacement per atom (dpa) with 3.5 MeV Fe ions (Fe2+).
Xue Bai+4 more
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Indentation size effect and hardness of materials [PDF]
In recent decades, the Indentation Size Effect (ISE), which manifests itself as a change in fixed hardness depending on indentation conditions, has become one of the most urgent problems of modern materials science.
Udalov A.V., Udalov A.A.
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