Results 221 to 230 of about 10,905 (259)
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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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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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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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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.
S. N Zahari, M. S. M Sani
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Multiple Reference Impact Testing for Bridge Assessment with Drop Hammer
Advanced Materials Research, 2012A new drop hammer was designed and used for multiple reference impact testing of two bridges. The drop hammer utilizes a multiple-rebound control system for successfully applying a single impact with repeatable high-level force for bridge testing. Signal analysis results indicate that the drop hammer provides a higher signal-noise ratio and a better ...
Yu Juan Liao, Yun Zhou, Peng Qin
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Single Cutter Impact Tests Investigate Deep-Well Hammer-Drilling Performance
Proceedings of SPE Annual Technical Conference and Exhibition, 2005Abstract The use of a percussion hammer can provide high penetration rates through hard rocks when air drilling. The work of this paper was partly sponsored by the US Department of Energy to develop hammer drilling techniques for drilling deep hard rocks, using real drilling muds.
S. Green +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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Unbiased expression of FRF with exponential window function in impact hammer testing
Journal of Sound and Vibration, 2004Abstract The exponential window function is widely used in impact hammer testing to reduce leakage errors as well as to get a nice S/N ratio. The larger the exponential decay rate of the window is, the more effectively the leakage errors are reduced.
Se Jin Ahn, Weui Bong Jeong, Wan Suk Yoo
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A NEW APPROACH TO IMPACT TESTING INSTRUMENTATION USING AN ELECTRONIC SLAVE HAMMER
Mechanical Systems and Signal Processing, 1997Abstract An electronic slave hammer is used to improve the performance of impact testing. The electronic programmer as well as the power electronic circuits are presented. The geometry of the piston tip of the hammer and on duration of contact between the tip and the structure is discussed.
I. Tawfiq, T. Vinh, T. Chouychai
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