TY - GEN
T1 - Identification of failure precursor parameters for cooling fans
AU - Oh, Hyunseok
AU - Shibutani, Tadahiro
AU - Pecht, Michael
PY - 2009
Y1 - 2009
N2 - Cooling fans have been a critical part of the thermal management of commercial and military electronic equipment. Although accelerated testing by increasing operating temperatures has been commonly adopted in order to estimate the reliability of cooling fans in a short time frame, the testing time is usually more than 6 months due to the high reliability of current ball bearings. Prognostics and health management is a potential way to solve this problem. The first step in PHM is to identify precursor parameters. This article begins with the identification of precursor parameters from published studies and failure modes, mechanisms, and effects analysis (FMMEA). The health of cooling fans was estimated by monitoring three precursor parameters including acoustic noise, shaft rotational speed, and current consumption. Then the parameter value changes were compared to the failure criteria described in the IPC-9591 standard. © 2009 by ASME.
AB - Cooling fans have been a critical part of the thermal management of commercial and military electronic equipment. Although accelerated testing by increasing operating temperatures has been commonly adopted in order to estimate the reliability of cooling fans in a short time frame, the testing time is usually more than 6 months due to the high reliability of current ball bearings. Prognostics and health management is a potential way to solve this problem. The first step in PHM is to identify precursor parameters. This article begins with the identification of precursor parameters from published studies and failure modes, mechanisms, and effects analysis (FMMEA). The health of cooling fans was estimated by monitoring three precursor parameters including acoustic noise, shaft rotational speed, and current consumption. Then the parameter value changes were compared to the failure criteria described in the IPC-9591 standard. © 2009 by ASME.
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U2 - 10.1115/DETC2009-86280
DO - 10.1115/DETC2009-86280
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9780791848999
VL - 2
SP - 1253
EP - 1258
BT - Proceedings of the ASME Design Engineering Technical Conference
T2 - ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2009
Y2 - 30 August 2009 through 2 September 2009
ER -