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Case Report: HHS-spectrum distal palmar arterial thrombosis in a volleyball athlete with provocative-position thoracic outlet narrowing. [PDF]
Front Cardiovasc MedWang Y +7 more
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Effects of dietary fibers varying in physicochemical properties on total endogenous protein losses and protein digestibility in broilers. [PDF]
Poult SciHabibi MF +6 more
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Diagnostic Forensic Tools in the Investigation of Electrocution Fatalities: A Case Study. [PDF]
Anal Sci AdvAskar AM +5 more
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Rock Drilling Test with a Rotary Hammer
Geotechnical Testing Journal, 2022ABSTRACT Various test methods have been proposed for obtaining rock strength; however, further research is needed on estimation methods of hard rock strength in situ. In this study, rock drilling tests were conducted with small handheld rotary hammers in a laboratory with four rocks and in situ at two sites. In spite of the fact that the
K. Hashiba, K. Fukui
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Bench Tests for Chipping Hammers
Russian Engineering Research, 2021The basic test systems for hand-held impact tools such as chipping hammers are reviewed. The subsequent discussion considers the possibility of developing bench tests for chipping hammers that better reproduce the manual process in terms of the hammer position with respect to the workpiece.
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A Study on Hammering Test using Deep Learning
2020 IEEE 15th International Conference of System of Systems Engineering (SoSE), 2020Technical infrastructure such as bridges and tunnels are critical in economic activities, but in recent years, aging of them has progressed, and demand for checking the soundness of them is expanding. There are several technologies to inspect the aging process of the structures to find cracks on a wall or flacking inside of concrete.
Tsubasa Fukumura +5 more
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Test stand for pneumatic hammers
Journal of Mining Science, 2007The impact energy damping stand is designed to test pneumatic hammers. The choice of material to be a damping material is reasoned. Deformation is established for the damping material under an impact impulse effect. The calculation method is proposed to evaluate the basic damper parameters for the stand.
V. V. Chervov, A. S. Smolentsev
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The Journal of the Acoustical Society of America, 1992
An impact test hammer includes a cylindrical handle having opposite first and second end portions and a hollow interior, a sensor portion fixed to the first end portion of the handle, and a grip portion fixed to the second end portion of the handle. An elastic striking portion is fixed to an outer periphery of the sensor storage portion, and an impact ...
Kiyoshi Umemura, Teruo Irie
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An impact test hammer includes a cylindrical handle having opposite first and second end portions and a hollow interior, a sensor portion fixed to the first end portion of the handle, and a grip portion fixed to the second end portion of the handle. An elastic striking portion is fixed to an outer periphery of the sensor storage portion, and an impact ...
Kiyoshi Umemura, Teruo Irie
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Testing of SFRC by the Schmidt Rebound Hammer
MRS Proceedings, 1990AbstractThe rebound number, its relationship to fundamental frequency and correlations with compressive strength and erosion - abrasion resistance are discussed. Nine mix proportions were used. The w/c ratios were varied from 0.30 to 0.65. The volumetric percentage of hooked steel fibres was varied from 0.25 to 2.0 vol.% at the w/c of 0.30; at the ...
Jakob Šušteršič +2 more
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Tests of chipping hammers (formation of the bench technique)
Vestnik Mashinostroeniya, 2021An overview of the principal schemes and designs of test tools for hand-held impact machines, such as chipping hammers, is presented. The formation of a bench test method for chipping hammers is considered, which most objectively reproduces the operation of a hand-held machine from the position of its location relative to the object being processed ...
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