Results 11 to 20 of about 8,732 (235)
A Compact Dual-Band Notched UWB Antenna for Wireless Applications
Micromachines, 2021 This article presents the design and analysis of a V-shaped ultrawideband (UWB) antenna and dual-band UWB notch antenna. A rectangular slot is cut into a semicircular partial ground plane of the antenna to achieve ultrawide bandwidth.
Om Prakash Kumar +2 more
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Effect of weir´s theoretical discharge coefficient on discharge measurements in small Andean streams
La Granja: Revista de Ciencias de la Vida, 2022 Andean ecosystems provide important hydrological services for downstream communities. Due to this importance, several hydrological studies have been carried out in recent years, with emphasis on hydrological processes identification and land use change ...
Mario Guallpa +2 more
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Micro-toughness of ZrB2-based ceramics evaluated by ultra-shallow V-notch
Journal of Asian Ceramic Societies, 2022 Because of the essential difference between micro-toughness and macro-toughness, the indiscriminate application of deep notch tests may result in serious errors of micro-toughness associated with shallow cracks or flaws in ceramics.
Xinyuan Zhao +6 more
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Materials Research, 2005 Many methods are currently used to measure the fracture toughness of ceramic materials. Methods based on crack-length measurements of cracks introduced into the sample surface by the Vicker's indentor have the advantage that they are easy to use, but are
Kurt Strecker +2 more
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Fracture and Structural Integrity, 2019 In this paper, determination of the accurate notch stress intensity factors (NSIFs) have been demonstrated using a recently proposed technique: The point substitution displacement technique (PSDT) for the sharp V-notched configurations. In this technique,
Mirzaul Karim Hussain, K.S.R.K. Murthy
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Analysis of creep stresses and strains around sharp and blunt V-notches
Theoretical and Applied Fracture Mechanics, 2016 Abstract Geometrical discontinues, such as notches, need careful consideration due to stress concentration appearing in their proximity. Notches become even more dangerous in the case of mechanical and structural components subjected to high temperature and cyclic loading resulting often in localized creep deformations.
Berto, Filippo +3 more
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Modified Theory of Local Strain Energy Density for Sharp V-Notches [PDF]
Прикладная механика и техническая физика, 2015 A new approach is proposed to estimate the fracture of bodies with V-shaped notches under loading of two types. Two examples of quasibrittle fracture are considered: with an initial straight crack and with a sharp V-notch. Experimental data are obtained on the fracture of V-notched specimens under bending.
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Fracture and Structural Integrity, 2013 A recent criterion based on the local strain energy density (SED) averaged over a given control volume is applied to well-documented experimental data taken from the literature, all related to steel welded joints of complex geometry.
M. Zappalorto, F. Berto, P. Lazzarin
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MATEC Web of Conferences, 2018 A simple yet reliable and powerful methodology using only one strain gage has been recommended for appropriate determination of notch stress intensity factor (NSIF) for sharp V-notched configurations subjected to mode I condition.
Paul Pranjol +2 more
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Sharp V‐notches in viscoplastic solids: Strain energy rate density rule and fracture toughness [PDF]
Fatigue & Fracture of Engineering Materials & Structures, 2020 AbstractDifferent from Neuber's rule or Glinka's energy method which are always adopted to characterize the notch tip field under elastoplastic condition, in this paper, the strain energy rate density (SERD) rule is used for viscoplastic materials. In particular, based on the definition of generalized notch stress intensity factor (G‐NSIF) for sharp V ...
Yanwei Dai, Luca Susmel, Fei Qin
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