Results 21 to 30 of about 353 (208)
Pendulum impact hammer tests on glued laminated timber beams
, 2022 Report / Institute of Structural Engineering ETH Zurich, 2022 ...
Cao, Alex Sixie +3 more
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Railway Ballast Diagnose through Impact Hammer Test
Procedia Engineering, 2011 AbstractThis paper reports a feasibility study in the use of measured modal parameters of in-situ concrete sleepers to detect possible damage of the underlying railway ballast. There are many methods developed for monitoring and damage detection of the rail track.
Lam, H.F., Wong, M.T.
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Evaluation of Walnut Kernel Quality (as Degree of Crushing) Obtained Under Impact Loading
Journal of Agricultural Machinery, 2014 In this research the quality of walnut kernels under impact loading were studied. Due to unavailability of specific varieties of walnut in Iran, the tests were carried out on the available genotypes.
Kh Mohammadi Ghermezgholi +4 more
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Shock and Vibration, 2017 During the Split-Hopkinson pressure bar (SHPB) tests driven by pendulum hammer, employing a proper special shape striker is an effective way to obtain dynamic stress equilibrium condition and to get constant strain rate of the rock specimen.
S. H. Li, W. C. Zhu, L. L. Niu, F. Dai
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Impact Resistance Test and Numerical Simulation Study of Scrap Steel Fiber Rubber Concrete
BuildingsThe scrap steel fibers (SSF) produced by mechanical processing are processed and added to rubber concrete (RC) to make scrap steel fiber rubber concrete (SSFRC), so as to enhance the strength of the rubber concrete.
Mingshuai Li +4 more
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Concrete Object Anomaly Detection Using a Nondestructive Automatic Oscillating Impact-Echo Device
Applied Sciences, 2019 The goal of this study was to develop an impact-echo device that can conduct automatic oscillation tests, process signals rapidly, and apply it to concrete object anomaly analysis.
Hsi-Chiang Chou
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A Variable-Impulse Hammer Impact Test (VIHIT) Method for Improved Mode Shape Identification
SensorsThe impact hammer, equipped with a force transducer, is a portable and practical tool for inducing measurable excitations in structural health monitoring (SHM). However, its reliability is often limited by uncontrolled factors such as swing power, angle,
Alec Jensen, Charles Riley
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Prediction Model of Drilling Performance for Percussive Rock Drilling Tool
Advances in Civil Engineering, 2020 This study suggests a method for quantitatively estimating the drilling performance of the down-the-hole (DTH) hammer during percussive drilling of rock surfaces. A pneumatic dynamic model of the DTH hammer was developed that considers the mass flow rate
Dae-Ji Kim +6 more
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LLNL small-scale drop-hammer impact sensitivity test [PDF]
, 1995 Small-scale safety testing of explosives and other energetic materials is done to determine their sensitivity to various stimuli including friction, static spark, and impact. This testing is typically done to discover potential handling problems for either newly synthesized materials of unknown behavior or materials that have been stored for long ...
Simpson, L. R., Foltz, M. F.
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Comparative Shear Tests of Bolt Rods Under Static and Dynamic Loading
Studia Geotechnica et Mechanica, 2020 This article presents the methodology and results of single shear tests of bolt rods under dynamic impact loading generated by means of a drop hammer. Comparative analysis was also performed for bolt rod load capacity, stress and shear work under static ...
Pytlik Andrzej
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