Spelling suggestions: "subject:"[een] SLIP"" "subject:"[enn] SLIP""
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Coulomb stress changes by long-term slow slip events in the southcentral Alaska subduction zoneMahanama, Anuradha 27 November 2019 (has links)
No description available.
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Use of Fiber Reinforced Polymer for Wood Roof-to-Wall Connections to Withstand Hurricane Wind LoadsDhakal, Aman January 2019 (has links)
No description available.
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Behavior of Extra-Long SlotsWollenslegel, Benjamin E. 15 June 2020 (has links)
No description available.
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Slide-to-Roll Ratio in Automotive Valve Train Cam and Oscillating Roller FollowerDaniel Jonathan Korn (16407771) 26 June 2023 (has links)
<p>The objectives of this investigation were to experimentally and analytically evaluate the performance of a valve train cam and oscillating roller follower mechanism. Of particular interest was the effect of operating conditions on the slide-to-roll ratio (SRR) of the roller follower. In order to experimentally measure the SRR at the cam-roller contact, a valve train test rig (VTTR) was utilized. The VTTR contained a section of a heavy-duty diesel engine valve train that was instrumented with encoders and Hall effect sensors to measure the camshaft and roller follower angular velocities as a function of operating parameters. To corroborate the experimental with analytical results, a numerical model for the cam and oscillating roller follower was developed. In this modeling approach, the roller angular velocity was determined via a torque balance between the frictional torque of the pin-roller follower and cam-roller follower interfaces. The pin-roller friction was obtained by developing a time-dependent hydrodynamic journal bearing model with variable speed and load. Friction maps were developed for the cam-roller follower interface using a ball-on-disk EHD2 rig to capture the friction behavior across a range of entraining velocities, contact pressures, and SRRs. Additional areas of investigation included thermal effects and wear in the pin-roller contact. Overall, good agreement was obtained between the experimental and analytical roller follower angular velocity, with the normalized RMS errors less than 7%, across all operating conditions investigated. The analytical investigation determined that thermal effects in the pin-roller contact are insignificant for the typical operating conditions. However, it was shown that the pin-roller friction torque is critical in causing roller follower slip, as the SRR greatly increases once the pin-roller friction torque is greater than the cam-roller friction torque. Finally, pin-roller local wear was demonstrated to have detrimental effects on the SRR of the roller follower once a critical wear depth was reached. </p>
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NEW METHODS FOR DETECTING EARTHQUAKE SWARMS AND TRANSIENT MOTION TO CHARACTERIZE HOW FAULTS SLIPHoltkamp, Stephen Gregg 05 June 2013 (has links)
No description available.
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SLOPE STABILITY ANALYSIS USING 2D AND 3D METHODSAlbataineh, Nermeen 05 October 2006 (has links)
No description available.
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Characteristics of microstructure and mechanical properties in body centered-cubic refractory high/medium entropy alloys / BCC耐熱高・中エントロピー合金が示す組織と力学特性の特徴QIAN, HE 23 March 2022 (has links)
京都大学 / 新制・課程博士 / 博士(工学) / 甲第23891号 / 工博第4978号 / 新制||工||1777(附属図書館) / 京都大学大学院工学研究科材料工学専攻 / (主査)教授 辻 伸泰, 教授 乾 晴行, 教授 安田 秀幸 / 学位規則第4条第1項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DFAM
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The Influence of Superhydrophobicity on Laminar Jet Impingement and Turbulent Flow in a Channel with Walls Exhibiting RibletsPrince, Joseph Fletcher 28 August 2013 (has links) (PDF)
The object of this work is to explore the influence superhydrophobic (SH) surfaces exert in laminar jet impingement and when they are combined with riblets in turbulent channel flow. A SH surface generates an apparent slip due to the combination of micropatterning and chemical hydrophobicity. Because of surface tension, water does not enter the cavities between the features, increasing the contact angle of a water droplet on the surface and reducing the liquid-solid contact area. An analysis based on the integral momentum approach of Karman and Pohlhausen is presented that predicts jet impingement behavior on SH surfaces. The model is first applied to the scenario where the slip at the surface is isotropic and a downstream depth is imposed such that a circular hydraulic jump occurs. The model predicts the thin film parameters downstream of the jet and the radial location of the hydraulic jump. An increase in the hydraulic jump radius occurs as slip increases, momentum of the jet increases, or the downstream depth decreases. Modifications to the model are made for the scenario where the slip at the surface varies azimuthally, as would be the case for a surface patterned with microribs. The average behavior is similar, although now an elliptically shaped jump forms with the major axis aligned parallel to the rib/cavity structures. The ellipse eccentricity increases as the slip increases, the jet momentum increases, or the downstream depth decreases. Where there is no downstream depth imposed on SH surfaces, the thin film breaks up into droplets instead of forming a hydraulic jump. Further changes are made to the model to incorporate this behavior for isotropic and anisotropic surfaces resulting in circular and elliptically shaped breakups respectively. This work also explores SH surfaces with riblets in turbulent channel flow. Pressure drop measurements across surfaces exhibiting superhydrophobicity, riblets, and surfaces with both drag reducing mechanisms are presented. The SH surface reduces drag because the effective surface area is reduced and riblets are able to reduce drag by dampening the spanwise turbulence. Photolithography was used to fabricate all surface types. An aluminum channel with a control and a test section was used for testing. Pressure transducers recorded the pressure drop across smooth silicon wafers and patterned test surfaces simultaneously allowing for computation of the friction factors.
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Influence of constitutive laws on the evolution of micromechanical field variables during deformation of FCC metalsPatil, Chaitali Shridhar 11 August 2022 (has links)
No description available.
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Slip Detection For Robotic Lawn Mowers Using Loop SignalsAhmic, Enida, Beganovic, Alen January 2022 (has links)
Husqvarna AB is one of the leading producers of outdoor products such as autonomous lawn mowers. One important feature of these products is the ability toquickly respond to environmental factors such as slippy areas. A reliable slip detector is needed for this mission and many different technologies exists for detectingslip events. A common technique is to check the wheel motor current, which clearlydeviates when the lawn mower is subjected to slipping. The on-board sensors opensup for an alternative solution which utilizes the loop sensors as the main slip detector. This thesis covers the construction of a slip detection prototype which is basedon the loop sensors. In the end, Husqvarna AB was provided with a new alternativesolution, which was successfully compared to the exiting solution. It proved to bea reliable slip detector for manually induced slipping indoors, outdoor performancewere not investigated. Ultimately, the implemented prototype outperformed the existing solution in the intended environment of indoor testing.
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