Gear transmissions are widely used in industrial applications and are considered to be critical components. To date, the capabilities of gear condition indicators are controversial as some condition indicators can diagnose one type of fault at the early stages, yet cannot diagnose other types of faults. This study focused on fault detection and characterization based on vibrations in a spur gear transmission. Three different common local faults were examined: tooth face fault, broken tooth, and cracks at the tooth root. The faults were thoroughly analyzed to understand the fault manifestation in the vibration signature and to find condition indicators that are robust and sensitive to the existence and severity of the fault. The analysis was based on both experimental data and simulated signals from a well-established dynamic model of the gear system. The fault detection capability of common condition indicators, as well as newly defined condition indicators, was examined and measured using statistical distances. For each fault type, the investigated condition indicators were categorized according to their discrimination power between faulted and healthy states and the ability to rank the fault severity. It was concluded that faults that affect the involute profile throughout the tooth are easily detectable. Faults such as root cracks or chipped tooth, in which mainly the tooth stiffness is affected, are much more challenging to detect. It has been shown that while using a realistic model, the capabilities of different condition indicators can be tested, and the experiments can be replaced by simulations.
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August 2019
Research-Article
A Step Toward Fault Type and Severity Characterization in Spur Gears
I. Dadon,
I. Dadon
PHM Laboratory,
Department of Mechanical Engineering,
P.O.B 653, Beer-Sheva 8410501,
e-mail: dadoni@post.bgu.ac.il
Department of Mechanical Engineering,
Ben-Gurion University of the Negev
,P.O.B 653, Beer-Sheva 8410501,
Israel
e-mail: dadoni@post.bgu.ac.il
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N. Koren,
N. Koren
PHM Laboratory,
Department of Mechanical Engineering,
P.O.B 653, Beer-Sheva 8410501,
e-mail: korenni@post.bgu.ac.il
Department of Mechanical Engineering,
Ben-Gurion University of the Negev
,P.O.B 653, Beer-Sheva 8410501,
Israel
e-mail: korenni@post.bgu.ac.il
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R. Klein,
P.O.B 101, Gilon, D.N. Misgav 20103,
e-mail: Renata.Klein@RKDiagnostics.co.il
R. Klein
R.K. Diagnostics
,P.O.B 101, Gilon, D.N. Misgav 20103,
Israel
e-mail: Renata.Klein@RKDiagnostics.co.il
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J. Bortman
J. Bortman
1
PHM Laboratory,
Department of Mechanical Engineering,
P.O.B 653, Beer-Sheva 8410501,
e-mail: jacbort@bgu.ac.il
Department of Mechanical Engineering,
Ben-Gurion University of the Negev
,P.O.B 653, Beer-Sheva 8410501,
Israel
e-mail: jacbort@bgu.ac.il
1Corresponding author.
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I. Dadon
PHM Laboratory,
Department of Mechanical Engineering,
P.O.B 653, Beer-Sheva 8410501,
e-mail: dadoni@post.bgu.ac.il
Department of Mechanical Engineering,
Ben-Gurion University of the Negev
,P.O.B 653, Beer-Sheva 8410501,
Israel
e-mail: dadoni@post.bgu.ac.il
N. Koren
PHM Laboratory,
Department of Mechanical Engineering,
P.O.B 653, Beer-Sheva 8410501,
e-mail: korenni@post.bgu.ac.il
Department of Mechanical Engineering,
Ben-Gurion University of the Negev
,P.O.B 653, Beer-Sheva 8410501,
Israel
e-mail: korenni@post.bgu.ac.il
R. Klein
R.K. Diagnostics
,P.O.B 101, Gilon, D.N. Misgav 20103,
Israel
e-mail: Renata.Klein@RKDiagnostics.co.il
J. Bortman
PHM Laboratory,
Department of Mechanical Engineering,
P.O.B 653, Beer-Sheva 8410501,
e-mail: jacbort@bgu.ac.il
Department of Mechanical Engineering,
Ben-Gurion University of the Negev
,P.O.B 653, Beer-Sheva 8410501,
Israel
e-mail: jacbort@bgu.ac.il
1Corresponding author.
Contributed by the Power Transmission and Gearing Committee of ASME for publication in the Journal of Mechanical Design. Manuscript received December 17, 2018; final manuscript received March 24, 2019; published online April 16, 2019. Assoc. Editor: Hai Xu.
J. Mech. Des. Aug 2019, 141(8): 083301 (11 pages)
Published Online: April 16, 2019
Article history
Received:
December 17, 2018
Revision Received:
March 24, 2019
Accepted:
March 26, 2019
Citation
Dadon, I., Koren, N., Klein, R., and Bortman, J. (April 16, 2019). "A Step Toward Fault Type and Severity Characterization in Spur Gears." ASME. J. Mech. Des. August 2019; 141(8): 083301. https://doi.org/10.1115/1.4043367
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