Results 291 to 300 of about 216,422 (329)
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Investigation on Impact Hammer Testing with Different Types of Hammer Tip for Welded Thin Plate
Advanced Science Letters, 2017Modal testing using impact hammer had been used extensively in various industries to analyze the dynamic properties of the structure. Impact testing become famous due to their advantages for instances; fast, compatible for measurements in the field and relatively inexpensive.
M S M Sani
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Multiple Impact Phenomenon in Impact Hammer Testing: Theoretical Analysis and Numerical Simulation
Acta Mechanica Solida Sinica, 2021As conducting an impact hammer testing during experimental modal analysis, the multiple impact phenomenon must be avoided. It is generally recognized that the multiple impact phenomenon is induced by the tester’s improper operation and can be avoided through more careful operation. This study theoretically and numerically investigates the whole process
Junyin Li +5 more
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Modal testing on a limited budget: Analysis of instrumented hammer alternatives for impact testing
The Journal of the Acoustical Society of America, 2023In recent years, as the use of numerical modeling has increased, organizations have frequently scaled back their experimental capabilities. Often equipment and expertise are no longer available when modal correlation measurements are required. This presentation is part of a planned series examining a minimalist approach to modal testing.
Hubert S. Hall, Curtis Larsen
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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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Impact hammer testing of a railway track
2017Non-destructive dynamic testing such as excitation techniques that use an instrumented hammer and mounted accelerometers has been previously employed for evaluation of structural condition of the track. This paper shows in-situ application of impact hammer testing on an inactive railway line.
Balic, E., McNally, C., Hester, D.
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Fouling detection using hammer impact test and wireless comunication
2011 IEEE International Instrumentation and Measurement Technology Conference, 2011There is a persistent problem that continues to be a relevant demand for the chemical, petroleum, food and pharmaceutical industries. This problem is the fouling detection in systems of ducts. This work shows how the previous tests to develop a platform for detecting fouling of pipes analyze specific locations using the impact hammer test with wireless
L. C. Lemos +3 more
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Modified pendulum hammer in impact tests of adhesive, riveted and hybrid lap joints
International Journal of Adhesion and Adhesives, 2021Abstract This paper presents a modified pendulum hammer adapted to test the impact strength of lap joints. The impact tests of lap specimens exhibited greater repeatability in terms of the results, compared with the tests of block specimens (specimens used in Block Shear Test (ISO 9653)).
Andrzej Komorek, Jan Godzimirski
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Impact hammer test of ITER blanket remote handling system
Fusion Engineering and Design, 2016Abstract An impact hammer test of the full-scale mock-up of the ITER blanket remote handling system (BRHS) was carried out to validate the results of the seismic analysis of the BRHS which were performed using a finite element (FE) model. As the FE analysis of the BRHS predicted a vertical mode ∼8 Hz, which coincides with a major natural frequency of
Yuto Noguchi +5 more
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Fouling Detection based on Vibration Analysis with the Hammer Impact Test
2007 IEEE Instrumentation & Measurement Technology Conference IMTC 2007, 2007Fouling detection is a persistent and relevant problem for the chemical, oil, food and pharmaceutical industries. The fouling process is the slow, unwanted layer deposition of heavy organic and other dissolved solid material out of transported fluids or suspensions onto inner wall surfaces in fluid transport system over an extended period of time. This
Jaidilson Jo da Silva +3 more
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On the prediction of impact noise, X: The design and testing of a quietened drop hammer
Journal of Sound and Vibration, 1986Part V in this series showed that the technique of predicting overall noise levels ( L eq per event) from vibration levels in a drop hammer produces surprisingly accurate results, allowing a good estimate of the contribution of each component to the overall noise.
E.J. Richards, I. Carr
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