Results 1 to 10 of about 216,323 (230)
Prediction of the Physical Properties of a Structural Member by the Impact Hammer Test [PDF]
Sensors, 2022 The frequency response function (FRF) in the frequency domain is a black box used to collect physical information and to indicate the modal characteristics of a dynamic system.
Eun-Taik Lee, Yu-Sik Hong, Hee-Chang Eun
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Crack Detection in an Aluminium Oxide Grinding Wheel by Impact Hammer Tests [PDF]
Computation, 2023 Grinding is widely used as the last step of the manufacturing process when a good surface finish and precise dimensional tolerances are required. However, if the grinding wheels have cracks, they may lead to a hazardous working environment and produce ...
Yubin Lee +3 more
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Effect of Hammer Type on Generated Mechanical Signals in Impact-Echo Testing [PDF]
Materials, 2021 The impact-echo diagnostic method is a well-known nondestructive pulse compression test method, which can be relatively easily used for the testing of concrete and reinforced concrete elements. The evaluation of the measurement with this method is based on the analysis of the signal itself in the time and frequency domains.
Richard Dvořák, Libor Topolář
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Research on the Drop Hammer Impact Test System
IOP Conference Series: Earth and Environmental Science, 2021 Abstract The drop hammer impact test system adopts the multi-purpose and modular design to solve the four problems of the airbag door of automobile test instrument panel: the test conditions are generally inconsistent with the actual conditions; The secondary impact problem exists in the collision test.
Zhiming Wang +2 more
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Rebound hammer tests of high-strength concrete: Effects of internal stress and the shape of the impact area of the test specimens on the measurement results [PDF]
, 2019 This study examines the factors affecting the results of non-destructive testing of high-strength concrete performed on cubes and on cylinders and examines the processing of calibration relations.
Bodnarová, Lenka +2 more
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PENDULUM IMPACT HAMMER TESTS ON TIMBER BEAMS - EXPERIMENTAL SETUP [PDF]
World Conference on Timber Engineering (WCTE 2023), 2023 World Conference on Timber Engineering WCTE ...
Cao, Alex Sixie, Frangi, Andrea
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Experimental Characterization of the Torsional Damping in CFRP Disks by Impact Hammer Modal Testing [PDF]
Polymers, 2020 Composite materials are widely used for their peculiar combination of excellent structural, mechanical, and damping properties. This work presents an experimental study on the dissipation properties of disk-shaped composite specimens exploiting vibration tests.
Cosco F. +4 more
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Impact noise test method using a modified hammer machine [PDF]
The Journal of the Acoustical Society of America, 1975 The current national (ASTM E-492) and international (ISO-R140/R717) impact method involves the use of a standard hammer machine for evaluating the impact noise isolation of floor/ceiling structure. The method has been severely criticized on the ground that ratings based on the test data correlate poorly with the subjective judgments of people listening
Theodore J. Schultz
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On an Impact Testing Machine of Drop Hammer Type
journal of the Japan Society for Testing Materials, 1961 In order to research on the behaviors of destruction of carbon steel forgings by impact bending, we designed an impact testing machine of drop hammer type. The total height of this testing machine is about 5m. The weights of the used drop hammers are 12.5, 25 and 50kg respectively. The maximum distance from the position of test piece to the drop hammer
Sadatoshi INADA +2 more
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Hammer impact test applied for fouling detection in pipelines [PDF]
Sba: Controle & Automação Sociedade Brasileira de Automatica, 2011 The fouling detection in duct systems is a persistent problem and remains a relevant demand for the chemical, oil, food and pharmaceutical industries. The fouling is a deposition process of heavy organic and other dissolved solid materials in the transported fluids or suspensions onto inner wall surfaces in fluid transport systems.
Silva, Jaidilson Jó da +3 more
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