High temperature dynamic viscosity sensor for engine oil applications

Brouwer, Matthew D.; Gupta, Lokesh A.; Sadeghi, Farshid; Peroulis, Dimitrios; Adams, Douglas S.

doi:10.1016/j.sna.2011.10.024

Cited by 38 publications

(22 citation statements)

References 8 publications

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“…Lab tests were carried out to evaluate the frequency response of the proposed sensing system and to verify the FEA results. The results obtained in this analysis are also associated with the results given in paper [5,11]. The detailed frequency responses are shown in Fig.…”

Section: Resultssupporting

confidence: 62%

PMN-PT based smart sensing system for viscosity and density measurement

et al. 2017

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This paper presents a smart sensing system for viscosity and density measurement of viscous fluids. The proposed system is based on the vibrational properties of a cantilever probe bonded with newly developed piezoelectric materials-Lead Magnesium Niobate/Lead Titanate (PMN-PT) transducer, which has a piezoelectric charge constant (d33) more than 3 times larger than that of traditional piezoelectric material Lead zirconate titanate (PZT). The proposed system utilizes a PMN-PT single crystal for actuation and laser vibrometer for vibration detection. Using the PMN-PT transducer, the measured viscosity and density of fluids were extracted by analyzing the vibrational properties of the smart probe. Finite element analysis was conducted with COMSOL Multiphysics for theoretical calculation and lab tests were carried out to verify and evaluate the simulation results. This smart sensing system can be applied to in-field, in situ and real-time monitoring of viscous fluids, such as blood, engine oil and early-age concrete.

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Section: Resultssupporting

confidence: 62%

PMN-PT based smart sensing system for viscosity and density measurement

et al. 2017

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“…Cantileverbased viscosity sensors, as discussed in this paper, also have a wide usage. Viscosity measurements of engine oils, silicone oils and glycerol solutions with the use of millimeter scale cantilevers with large sample volumes (around 3 ml) have been demonstrated [13][14][15]. Although there are other studies introducing measurements with microcantilevers [16][17][18][19][20][21][22], the working range or sensitivity is not suitable for the blood plasma viscosity measurement due to various limitations imposed by operating cantilevers in liquids.…”

Section: Introductionmentioning

confidence: 99%

Microcantilever based disposable viscosity sensor for serum and blood plasma measurements

Çakmak

Elbüken

Ermek

et al. 2013

Methods

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a b s t r a c tThis paper proposes a novel method for measuring blood plasma and serum viscosity with a microcantilever-based MEMS sensor. MEMS cantilevers are made of electroplated nickel and actuated remotely with magnetic field using an electro-coil. Real-time monitoring of cantilever resonant frequency is performed remotely using diffraction gratings fabricated at the tip of the dynamic cantilevers. Only few nanometer cantilever deflection is sufficient due to interferometric sensitivity of the readout. The resonant frequency of the cantilever is tracked with a phase lock loop (PLL) control circuit. The viscosities of liquid samples are obtained through the measurement of the cantilever's frequency change with respect to a reference measurement taken within a liquid of known viscosity. We performed measurements with glycerol solutions at different temperatures and validated the repeatability of the system by comparing with a reference commercial viscometer. Experimental results are compared with the theoretical predictions based on Sader's theory and agreed reasonably well. Afterwards viscosities of different Fetal Bovine Serum and Bovine Serum Albumin mixtures are measured both at 23°C and 37°C, body temperature. Finally the viscosities of human blood plasma samples taken from healthy donors are measured. The proposed method is capable of measuring viscosities from 0.86 cP to 3.02 cP, which covers human blood plasma viscosity range, with a resolution better than 0.04 cP. The sample volume requirement is less than 150 ll and can be reduced significantly with optimized cartridge design. Both the actuation and sensing are carried out remotely, which allows for disposable sensor cartridges.

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“…Therefore a slight variation in temperature can have a very large effect on the fluid viscosity. Based on previous research [3], that oil temperature of enclosed gear drives should never exceed 1093°C and the best service will be obtained at temperature in a range of 500−600°C. An increase of 10% or more in oil viscosity indicates that the lubricant has reached the end of its useful life.…”

Section: Resultsmentioning

confidence: 99%

“…In fact, some researches have been done as to develop the understanding and correlations of contaminated gear oil which generally will contribute to gears failure [3,4]. The latter, however, is considered to be a main factor for determining the performance of gears and bearing within the optimum operating condition.…”

Section: Introductionmentioning

confidence: 99%

Condition Monitoring of Variable Speed Worm Gearbox Lubricated with Different Viscosity Oils

Ismon

Zaman

Ghazali

2015

AMM

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Abstract. Over the years, condition monitoring of gear transmission systems have captured significant worldwide attention from both industries and academia. This is in light of the fact that an effective condition monitoring techniques will unquestionably extend the life span of the rotating equipment. In this research, both the vibration and temperature monitoring techniques were utilized to characterize the vibration behavior of worm gear as function of gear lubricant's viscosity. Three different types of lubricant's viscosity; VG100, VG460 and VG680 were used in the study to serve the sliding friction of worm gears. The predetermined speeds of electric motor at 900, 1150 and 1400 rpm were introduced to the gearbox prior to the measurement of vibration signal and temperature profile. The results revealed that a lubricant with higher viscosity contributes to less vibration amplitude. At 1150 rpm, it was recorded that the vibration amplitudes are higher compare to the other motor speeds, for all lubricant's types. In this case, VG100 showed the highest vibration amplitude followed by VG460 and VG680. This result was corroborated well with the obtained temperature profiles which are 35.0°C, 35.7°C and 39.3°C for the respective VG100, VG460 and VG680. Thus, concludes the correlation between the lubrication's viscosity, vibration level, temperature profile and worm gear speed.

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High temperature dynamic viscosity sensor for engine oil applications

Cited by 38 publications

References 8 publications

PMN-PT based smart sensing system for viscosity and density measurement

PMN-PT based smart sensing system for viscosity and density measurement

Microcantilever based disposable viscosity sensor for serum and blood plasma measurements

Condition Monitoring of Variable Speed Worm Gearbox Lubricated with Different Viscosity Oils

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