TY - GEN
T1 - Diagnostic method of low speed rolling element bearing using AE envelope waveform
AU - Sako, Takashi
AU - Yoshie, Osamu
PY - 2010/12/1
Y1 - 2010/12/1
N2 - Most of low speeds rotating machines are large and important equipments in plants, and the stoppage caused by damage of rolling element bearing brings serious losses. This paper relates to a diagnosis bearing in low speed rotating equipment of 100 rpm or less, and proposes a method using AE envelope waveform of a 100 k to 1 MHz frequency region. Abnormality diagnosis was enabled even from rotation of 1 rpm by improving the S/N ratio by the method of further amplifying after envelope processing in addition to amplification of AE waveform. Furthermore, a method to remove electric noises in an event counting method and an abnormality judgment method by an event counting method in low speed rotation are proposed. The proposed methods are applied to implement a diagnostic instrument and are actually utilized for the abnormality diagnosis and condition monitoring on sites, which shows the validity of the proposal.
AB - Most of low speeds rotating machines are large and important equipments in plants, and the stoppage caused by damage of rolling element bearing brings serious losses. This paper relates to a diagnosis bearing in low speed rotating equipment of 100 rpm or less, and proposes a method using AE envelope waveform of a 100 k to 1 MHz frequency region. Abnormality diagnosis was enabled even from rotation of 1 rpm by improving the S/N ratio by the method of further amplifying after envelope processing in addition to amplification of AE waveform. Furthermore, a method to remove electric noises in an event counting method and an abnormality judgment method by an event counting method in low speed rotation are proposed. The proposed methods are applied to implement a diagnostic instrument and are actually utilized for the abnormality diagnosis and condition monitoring on sites, which shows the validity of the proposal.
KW - Acoustic emission
KW - Low speed rotating equipment
KW - Machine diagnosis
KW - Rolling element bearing
KW - Signal processing
UR - http://www.scopus.com/inward/record.url?scp=79951612464&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79951612464&partnerID=8YFLogxK
U2 - 10.1109/TENCON.2010.5686610
DO - 10.1109/TENCON.2010.5686610
M3 - Conference contribution
AN - SCOPUS:79951612464
SN - 9781424468904
T3 - IEEE Region 10 Annual International Conference, Proceedings/TENCON
SP - 724
EP - 729
BT - TENCON 2010 - 2010 IEEE Region 10 Conference
T2 - 2010 IEEE Region 10 Conference, TENCON 2010
Y2 - 21 November 2010 through 24 November 2010
ER -