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Full text release has been delayed at the author's request until August 05, 2024

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An Experimental Investigation of the Impact of Engineered Surface Processes on Efficiency of Spur Gears

Chaudhury, Kreteeka
http://rave.ohiolink.edu/etdc/view?acc_num=osu1556553897979376

Abstract Details

2019, Master of Science, Ohio State University, Mechanical Engineering.
This study was conducted to evaluate the effect of surface finish on spur gear power losses under jet lubrication. Four different surface finish combinations were tested: (i) hard ground surface pair, (ii) chemically polished surface pair, (iii) super honed surface pair and (iv) hard ground against chemically polished surface pair. The test was conducted at 432 different operating condition combinations of speed, torque, lubricant type and inlet temperature. An FZG back-to-back set up was used to conduct the test. Surface roughness inspections were carried out at regular intervals to monitor any changes in surface roughness characteristics. The measured power losses were resolved into spin (load independent) and mechanical (load dependent) power losses. The relation between both losses and various operating conditions were explored. As expected, spin power loss did not vary with variation in surface finish. Mechanical power loss increased with increase in speed and torque. Various surface roughness and operating parameters such as BAC curves and lambda ratio were calculated for each surface finish combination to study their correlation to power losses measured. For smoother surfaces, an increase in temperature decreased power loss as the viscosity of the lubricant decreased and hence rolling friction losses dominating the mechanical power loss decreased. However, for rougher surfaces sliding friction losses seemed to be dominant due to high amounts of asperity contact. Thus, more cases of higher power loss at high temperatures were observed for rougher surfaces.
David Talbot, Dr. (Advisor)
149 p.
Mechanical Engineering
FZG; Spur Gear Efficiency; Surface Roughness; Power Loss; Surface Finish

Recommended Citations

Citations

  • Chaudhury, K. (2019). An Experimental Investigation of the Impact of Engineered Surface Processes on Efficiency of Spur Gears [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1556553897979376

    APA Style (7th edition)

  • Chaudhury, Kreteeka. An Experimental Investigation of the Impact of Engineered Surface Processes on Efficiency of Spur Gears . 2019. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1556553897979376.

    MLA Style (8th edition)

  • Chaudhury, Kreteeka. "An Experimental Investigation of the Impact of Engineered Surface Processes on Efficiency of Spur Gears ." Master's thesis, Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1556553897979376

    Chicago Manual of Style (17th edition)

osu1556553897979376
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This open access ETD is published by The Ohio State University and OhioLINK.