A non-contact vibration measurement technique with linearity, simplicity, reliability and low cost to investigate rotating imbalance for quality testing of solid tires is proposed with an explanation of experimental results. The non-destructive testing technique consists of a 5 mW, 670 nm laser diode and a 100 kHz bandwidth photodiode. Initially, the surface of a rotating shaft is set to block a half part of the light beam emitting into the photodiode. When the axle of the rotating shaft oscillates due to a rotating imbalance, the light beam emitting into the photodiode varies and the displacement of the surface due to vibrations relative to a setup position is detected as voltage signal by the photodiode. This vibration measurement technique can be used to detect vibratory motion of a rotating shaft equipped with a solid tire. For each of the 18 solid tires in the experiment, 15 replication tests were performed in order to ascertain reliability of the technique under identical conditions. Test results also revealed that vibration displacements due to rotating imbalance of locally manufactured solid tires were greater than those of imported ones.
An applied laser shade vibration measurement technique for rotating imbalance for quality testing of solid tires
Anwendung einer Laserschatten-Schwingungsmessung bei Unwuchtuntersuchungen für die Qualitätsprüfung von Vollreifen
Measurement ; 41 , 8 ; 922-933
2008
12 Seiten, 20 Bilder, 5 Tabellen, 11 Quellen
Article (Journal)
English
An Optical-Based Technique to Obtain Vibration Characteristics of Rotating Tires
SAE Technical Papers | 2019
|Engineering Index Backfile | 1913