Results 261 to 270 of about 145,679 (305)

Comparative Analysis of the Structure, Properties and Internal Stresses of MAG Welded Joints Made of S960QL Steel Subjected to Heat Treatment and Pneumatic Needle Peening. [PDF]

Materials (Basel)
Górka J, Przybyła M, Wyględacz B.
europepmc   +1 more source

A Novel Test Set-Up for Direct Evaluation of Impact and Energy Absorption for Lattices. [PDF]

Materials (Basel)
Vaziri Sereshk MR, Kwiecien KL, Lodhi AT, Mahjoob M.   +3 more
europepmc   +1 more source

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Investigation on Impact Hammer Testing with Different Types of Hammer Tip for Welded Thin Plate

Advanced Science Letters, 2017
Modal 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
exaly   +2 more sources

Multiple Impact Phenomenon in Impact Hammer Testing: Theoretical Analysis and Numerical Simulation

Acta Mechanica Solida Sinica, 2021
As 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, Ken Lin, Yanchao Hu, Yuliang Yang, Yong Wang, Zhilong Huang   +5 more
openaire   +1 more source

Modal testing on a limited budget: Analysis of instrumented hammer alternatives for impact testing

The Journal of the Acoustical Society of America, 2023
In 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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Impact test hammer

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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Impact hammer testing of a railway track

2017
Non-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.
openaire   +2 more sources

Multiple Reference Impact Testing for Bridge Assessment with Drop Hammer

Advanced Materials Research, 2012
A 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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Fouling detection using hammer impact test and wireless comunication

2011 IEEE International Instrumentation and Measurement Technology Conference, 2011
There 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, J. M. R. Souza Neto, J. J. Silva, J. S. Rocha Neto   +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, 2021
Abstract 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
openaire   +1 more source