Evaluation of Accelerometer Mechanical Filters on Submerged Cylinders Near an Underwater Explosion
An accelerometer, mounted to a structure near an explosion to measure elasto-plastic deformation, can be excited at its resonant frequency by impulsive stresses transmitted within the structure. This results in spurious high peak acceleration levels that can be much higher than acceleration levels f...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
1998-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/1998/513249 |
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| _version_ | 1850237109818884096 |
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| author | G. Yiannakopoulos P.J. van der Schaaf |
| author_facet | G. Yiannakopoulos P.J. van der Schaaf |
| author_sort | G. Yiannakopoulos |
| collection | DOAJ |
| description | An accelerometer, mounted to a structure near an explosion to measure elasto-plastic deformation, can be excited at its resonant frequency by impulsive stresses transmitted within the structure. This results in spurious high peak acceleration levels that can be much higher than acceleration levels from the explosion itself. The spurious signals also have higher frequencies than the underlying signal from the explosion and can be removed by a low pass filter. This report assesses the performance of four accelerometer and filter assemblies. The assessment involves measurements of the response of a mild steel cylinder to an underwater explosion, in which each assembly is mounted onto the interior surface of the cylinder. Three assemblies utilise a piezoresistive accelerometer in which isolation is provided mechanically. In the fourth assembly, a piezoelectric accelerometer, with a built-in filter, incorporates both mechanical and electronic filtering. This assembly is found to be more suitable because of its secure mounting arrangement, ease of use, robustness and noise free results. |
| format | Article |
| id | doaj-art-1bca4702310d4c93ade3ba3de6e7e794 |
| institution | OA Journals |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 1998-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-1bca4702310d4c93ade3ba3de6e7e7942025-08-20T02:01:50ZengWileyShock and Vibration1070-96221875-92031998-01-015425526510.1155/1998/513249Evaluation of Accelerometer Mechanical Filters on Submerged Cylinders Near an Underwater ExplosionG. Yiannakopoulos0P.J. van der Schaaf1Defence Science and Technology Organisation, Aeronautical and Maritime Research Laboratory, GPO Box 4331, Melbourne, Victoria 3001, AustraliaDefence Science and Technology Organisation, Aeronautical and Maritime Research Laboratory, GPO Box 4331, Melbourne, Victoria 3001, AustraliaAn accelerometer, mounted to a structure near an explosion to measure elasto-plastic deformation, can be excited at its resonant frequency by impulsive stresses transmitted within the structure. This results in spurious high peak acceleration levels that can be much higher than acceleration levels from the explosion itself. The spurious signals also have higher frequencies than the underlying signal from the explosion and can be removed by a low pass filter. This report assesses the performance of four accelerometer and filter assemblies. The assessment involves measurements of the response of a mild steel cylinder to an underwater explosion, in which each assembly is mounted onto the interior surface of the cylinder. Three assemblies utilise a piezoresistive accelerometer in which isolation is provided mechanically. In the fourth assembly, a piezoelectric accelerometer, with a built-in filter, incorporates both mechanical and electronic filtering. This assembly is found to be more suitable because of its secure mounting arrangement, ease of use, robustness and noise free results.http://dx.doi.org/10.1155/1998/513249 |
| spellingShingle | G. Yiannakopoulos P.J. van der Schaaf Evaluation of Accelerometer Mechanical Filters on Submerged Cylinders Near an Underwater Explosion Shock and Vibration |
| title | Evaluation of Accelerometer Mechanical Filters on Submerged Cylinders Near an Underwater Explosion |
| title_full | Evaluation of Accelerometer Mechanical Filters on Submerged Cylinders Near an Underwater Explosion |
| title_fullStr | Evaluation of Accelerometer Mechanical Filters on Submerged Cylinders Near an Underwater Explosion |
| title_full_unstemmed | Evaluation of Accelerometer Mechanical Filters on Submerged Cylinders Near an Underwater Explosion |
| title_short | Evaluation of Accelerometer Mechanical Filters on Submerged Cylinders Near an Underwater Explosion |
| title_sort | evaluation of accelerometer mechanical filters on submerged cylinders near an underwater explosion |
| url | http://dx.doi.org/10.1155/1998/513249 |
| work_keys_str_mv | AT gyiannakopoulos evaluationofaccelerometermechanicalfiltersonsubmergedcylindersnearanunderwaterexplosion AT pjvanderschaaf evaluationofaccelerometermechanicalfiltersonsubmergedcylindersnearanunderwaterexplosion |