Vibration Distribution Measurement of Car Door and Engine Head Using OPPA Vibration Distribution Analyzer
In order to address the issue of vibration, it is crucial to accurately measure the vibration distribution. The authors previously developed the one-pitch phase analysis (OPPA) method, which allows for rapidly capturing the three-dimensional shape of a flat object. By integrating this method into a...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-05-01
|
| Series: | Vibration |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2571-631X/6/2/26 |
| _version_ | 1797592365434667008 |
|---|---|
| author | Mona Yadi Yoshiharu Morimoto Yasuhiro Takaya |
| author_facet | Mona Yadi Yoshiharu Morimoto Yasuhiro Takaya |
| author_sort | Mona Yadi |
| collection | DOAJ |
| description | In order to address the issue of vibration, it is crucial to accurately measure the vibration distribution. The authors previously developed the one-pitch phase analysis (OPPA) method, which allows for rapidly capturing the three-dimensional shape of a flat object. By integrating this method into a system, an OPPA vibration distribution measurement system was created, utilizing a line light source consisting of LEDs or optical fibers and also a high-speed camera to measure the vibrations of three-dimensional objects without physical contact. To further extend the application of the OPPA method to larger objects, such as cars, in this paper, a new system is introduced using a commercially available projector using a liquid crystal display (LCD) instead of a liner light source and a glass grating. This new system, which employs an ultra-short throw projector, is highly sensitive in displacement measurements and provides a wide-area analysis. These kinds of projectors produce noises at the frequency of the cooling fan and the refresh rate of the LCD. However, in this study, these noise sources were also examined. The capabilities of the new system are demonstrated through its application to the measurement of vibrations in a car door and an engine head. The measurement system and examples of its application are presented. |
| first_indexed | 2024-03-11T01:50:08Z |
| format | Article |
| id | doaj.art-7c3ef6dd7ccb499ba0575e1869d49106 |
| institution | Directory Open Access Journal |
| issn | 2571-631X |
| language | English |
| last_indexed | 2024-03-11T01:50:08Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Vibration |
| spelling | doaj.art-7c3ef6dd7ccb499ba0575e1869d491062023-11-18T13:00:32ZengMDPI AGVibration2571-631X2023-05-016242143310.3390/vibration6020026Vibration Distribution Measurement of Car Door and Engine Head Using OPPA Vibration Distribution AnalyzerMona Yadi0Yoshiharu Morimoto1Yasuhiro Takaya2Department of Mechanical Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan4D Sensor Inc., 579-1, Umehara, Wakayama 640-8550, JapanDepartment of Mechanical Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, JapanIn order to address the issue of vibration, it is crucial to accurately measure the vibration distribution. The authors previously developed the one-pitch phase analysis (OPPA) method, which allows for rapidly capturing the three-dimensional shape of a flat object. By integrating this method into a system, an OPPA vibration distribution measurement system was created, utilizing a line light source consisting of LEDs or optical fibers and also a high-speed camera to measure the vibrations of three-dimensional objects without physical contact. To further extend the application of the OPPA method to larger objects, such as cars, in this paper, a new system is introduced using a commercially available projector using a liquid crystal display (LCD) instead of a liner light source and a glass grating. This new system, which employs an ultra-short throw projector, is highly sensitive in displacement measurements and provides a wide-area analysis. These kinds of projectors produce noises at the frequency of the cooling fan and the refresh rate of the LCD. However, in this study, these noise sources were also examined. The capabilities of the new system are demonstrated through its application to the measurement of vibrations in a car door and an engine head. The measurement system and examples of its application are presented.https://www.mdpi.com/2571-631X/6/2/26vibrationmodal analysisfull-field distributionpowerphasecar |
| spellingShingle | Mona Yadi Yoshiharu Morimoto Yasuhiro Takaya Vibration Distribution Measurement of Car Door and Engine Head Using OPPA Vibration Distribution Analyzer Vibration vibration modal analysis full-field distribution power phase car |
| title | Vibration Distribution Measurement of Car Door and Engine Head Using OPPA Vibration Distribution Analyzer |
| title_full | Vibration Distribution Measurement of Car Door and Engine Head Using OPPA Vibration Distribution Analyzer |
| title_fullStr | Vibration Distribution Measurement of Car Door and Engine Head Using OPPA Vibration Distribution Analyzer |
| title_full_unstemmed | Vibration Distribution Measurement of Car Door and Engine Head Using OPPA Vibration Distribution Analyzer |
| title_short | Vibration Distribution Measurement of Car Door and Engine Head Using OPPA Vibration Distribution Analyzer |
| title_sort | vibration distribution measurement of car door and engine head using oppa vibration distribution analyzer |
| topic | vibration modal analysis full-field distribution power phase car |
| url | https://www.mdpi.com/2571-631X/6/2/26 |
| work_keys_str_mv | AT monayadi vibrationdistributionmeasurementofcardoorandengineheadusingoppavibrationdistributionanalyzer AT yoshiharumorimoto vibrationdistributionmeasurementofcardoorandengineheadusingoppavibrationdistributionanalyzer AT yasuhirotakaya vibrationdistributionmeasurementofcardoorandengineheadusingoppavibrationdistributionanalyzer |