Academic literature on the topic 'Mechanical and thermal engineering'

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Journal articles on the topic "Mechanical and thermal engineering"

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Asmatulu, Ramazan. "IMPACTS OF NANOSCALE INCLUSIONS ON FIRE RETARDANCY, THERMAL STABILITY, AND MECHANICAL PROPERTIES OF POLYMERIC PVC NANOCOMPOSITES." Journal of Thermal Engineering 3, no. 4 (2017): 1308–18. http://dx.doi.org/10.18186/journal-of-thermal-engineering.330150.

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Kunstfeld, Jaroslav, Jiří Hajnyš, Josef Brychta, Pavel Hemžský, and Henryk Nicielnik. "Application of Thermal Tool Holder in Mechanical Engineering." Technological Engineering 13, no. 1 (2016): 22–25. http://dx.doi.org/10.2478/teen-2016-0007.

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Abstract The paper is focused on testing the thermal tool holder during milling operation from the point of view shimmy and roughness machined surface of the equipped tool. Experimental work will include testing of surface roughness parameters of the machined surface structural steel 1.0553 (Fe510C1) in combination with the monolith three-lips cutter Kennametal F3AU177BDK38 from cemented carbide coated with TiAIN PVD coating. Experimental machining will distinguish the climb milling and conventional milling and will be done under predetermined conditions, always at 15 cycles and in relation to other types of fixture devices. All testing will be done at a sufficiently rigid machine CNC FGS 40/50. During machining will be measured and subsequently evaluated power machine during the milling process, shimmy and selected parameters of the roughness of the machined surface.
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Majumdar, Arun. "Not Without Engineering." Mechanical Engineering 123, no. 02 (2001): 46–49. http://dx.doi.org/10.1115/1.2001-feb-8.

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Recent experiments have shown that thermal conductivity of carbon nanotubes can be more than twice that of diamond. It should be noted that high mechanical strength often comes with high thermal conductivities. Recent experiments have shown that the thermal conductivity of carbon nanotubes can be as high as 3000 to 6000 W/m K at room temperature, which is more than twice that of diamond. It was recently shown by Alex Zettl and his group at the University of California, Berkeley that the relative motion between different shells of multiwall carbon nanotubes has some unique properties and can serve as excellent mechanical bearings that do not undergo any wear. Recent work has led to multifunctional probes, which, besides topography, can detect thermal, electrical, magnetic, and optical signals at nanoscales. The engineering challenge now is to develop microelectromechanical systems (MEMS)-based probes that integrate multiple functions on a single tip.
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Mullisen, R. S. "Thermal Engineering Design Project: A Linear Thermal Expansion Apparatus." International Journal of Mechanical Engineering Education 29, no. 3 (2001): 245–56. http://dx.doi.org/10.7227/ijmee.29.3.7.

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Xie, Bin, Weixian Zhao, Xiaobing Luo, and Run Hu. "Alignment engineering in thermal materials." Materials Science and Engineering: R: Reports 154 (July 2023): 100738. http://dx.doi.org/10.1016/j.mser.2023.100738.

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Kantor, Łukasz, Krzysztof Michalik, and Jadwiga Laska. "Engineering polymers with high mechanical and thermal resistance for electric motors." Science, Technology and Innovation 1, no. 1 (2017): 39–43. http://dx.doi.org/10.5604/01.3001.0010.7553.

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The aim of the research was to select and evaluate polymers that could be used as rotor insulation in electric motors based on Halbach array system. Which have specific material properties, such as high mechanical strength, high thermal resistance and, especially, high thermal conductivity, also at room and at elevated temperatures. Three high performance polymers were selected for the research: polyetheretherketone (PEEK), polyamideimide (PAI) and poly(p-phenylene sulphide) (PPS). Polymers were evaluated for mechanical strength, thermal conductivity, thermal diffusivity, specific heat capacity, linear thermal expansion and also differential scanning calorimetry (DSC) and thermal gravimetry (TG) analyses were carried out. Analyses are proved that all materials have appropriate properties for advanced electric motor insulator.
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Monetta, Tullio, and Annalisa Acquesta. "Metallic Biomaterials Surface Engineering." Metals 11, no. 9 (2021): 1366. http://dx.doi.org/10.3390/met11091366.

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MAKINO, Toshiro, and Hidenobu WAKABAYASHI. "A New Spectrophotometer System for Measuring Thermal Radiation Characteristics of Real Surfaces of Thermal Engineering Entirely(Thermal Engineering)." Transactions of the Japan Society of Mechanical Engineers Series B 76, no. 770 (2010): 1571–78. http://dx.doi.org/10.1299/kikaib.76.770_1571.

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Zhou, Hongyuan, Zaobao Liu, Wanqing Shen, Tao Feng, and Guangze Zhang. "Mechanical property and thermal degradation mechanism of granite in thermal-mechanical coupled triaxial compression." International Journal of Rock Mechanics and Mining Sciences 160 (December 2022): 105270. http://dx.doi.org/10.1016/j.ijrmms.2022.105270.

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MAKINO, Toshiro, and Hidenobu WAKABAYASHI. "Experimental Verification of Kirchhoff's Law on Thermal Radiation(Thermal Engineering)." Transactions of the Japan Society of Mechanical Engineers Series B 76, no. 769 (2010): 1406–11. http://dx.doi.org/10.1299/kikaib.76.769_1406.

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Dissertations / Theses on the topic "Mechanical and thermal engineering"

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Huang, Yi Ph D. Massachusetts Institute of Technology. "Spectral engineering for solar-thermal and thermal-radiative systems." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/127052.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, May, 2020<br>Cataloged from the official PDF of thesis.<br>Includes bibliographical references (pages 224-239).<br>Increasing energy efficiency for power generation and reduction of energy consumption are two important venues to address the energy supply and global warming challenges we face today. Radiation from the sun and terrestrial heat sources can be harvested for power generation. It is also an important heat transfer channel, with which one can control in order to regulate the temperature of objects. In this thesis, we focus on strategies to harvest and control solar and thermal radiation, with the goals (1) to improve power generation efficiency using solar and thermal photovoltaics and (2) to reduce the energy consumption used to maintain human comfort in built environments. Solar radiation, as one of the most abundant energy sources on Earth, is now harvested by photovoltaics around the world. While solar photovoltaics already has reached considerable efficiencies, there is still room for improvement.<br>One fundamental limit in solar photovoltaics is the discard of photons with energy smaller than the material bandgap. Another challenge for solar PVs, due to the intermittent nature of solar power, is the lack of low-cost electricity storage systems that provide electricity on-demand. Solar thermal systems, on the other hand, can dispatch energy on-demand due to low-cost of thermal storage systems. Hybrid systems that combine solar PV and solar thermal systems can potentially harvest solar energy at higher efficiency and provide more dispatchable sources of energy. In the first part of my thesis, we designed and experimentally tested a spectral-selective, thermally-conductive component to be used in such hybrid solar-PV thermal system.<br>The component can direct part of the solar spectrum to the photovoltaics and to absorb the rest of the spectrum for use in a thermal system, thereby harvesting the entire solar spectrum with an energy conversion efficiency close to 23%, and with over 40% dispatchable electricity generated from thermal energy. The photovoltaic energy conversion efficiency can also improve by recycling photons with energy smaller than the material bandgap. In a thermo-photovoltaic system, low-energy photons can be designed to reflect back to the radiation source, and therefore energy carried by these photons can be re-used. Thermo-photovoltaic devices also showed great potential to provide low-cost, dispatachable electricity when combined with high-temperature thermal storage systems and concentrated solar power. In the second part of my thesis, we have designed and optimized a practical, crystalline-Si based thermo-photovoltaic cell to be fabricated on double-side polished wafers.<br>The Si-based TPV cell, combined with a 2300K gray radiator, can potentially reach 40% energy conversion efficiency. We have evaluated and optimized the Si-TPV performance with comprehensive considerations of components in the photovoltaic cell, including doping and junction depth, front and back surface field, passivation layer, back reflector, front metallization, as well as tolerance to roughness introduced in fabrication. Experimental tests have been conducted on doped Si samples with back reflectors, and identified potential pathways to further reduce optical and electrical losses. The maturity of the Si PV technologies and its relatively low cost points to great promise of high-efficiency thermo-photovoltaic devices for high-temperature thermal energy storage. Thermal radiation is also integral to the regulation of heat balance and temperatures of human body. Spaces in built environments are typically kept at near-ambient temperatures for human thermal comfort.<br>However, heating and cooling of spaces consume 40% of the total energy used in the US. Instead of regulating temperature in vast spaces, local regulation of heat near human bodies can potentially save large amounts of energy. In the third part of my thesis, we study the use of fabrics to regulate skin temperatures of the human body by controlling the input and output radiation channels of the human skin, an important yet largely under-studied channel for body temperature regulation. We then propose desired spectral properties of fabrics for both heating and cooling purposes, and in both indoor and outdoor environments. Finally, we investigate via both simulation and experiments, how morphology and material of polymer-based fabrics can be used to achieve the desired spectral properties.<br>by Yi Huang.<br>Ph. D.<br>Ph.D. Massachusetts Institute of Technology, Department of Mechanical Engineering
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White, Sava P. "Thermo-mechanical modeling of thermal breaks in structural steel point transmittances." Thesis, University of Alaska Anchorage, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10103669.

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<p> Thermal bridging through structural steel members in building envelopes poses issues with heat loss and condensation in cold regions. Structural steel thermal breaks, taking the form of low-thermal conductivity, high-strength and stiffness materials placed between the faying surfaces of a steel connection, serve to reduce heat flow through the steel element and have seen extensive use in the construction industry. However, current steel construction code provisions in the US prohibit the use of compressible materials in a steel connection. While the practical benefits of thermal breaks in structural steel beams and columns have been well demonstrated, there is a lack of guidance on the structural design of these thermal breaks, as well as a yet undetermined thermal efficacy of thermal break design parameters.</p><p> The objective of this thesis was to determine the thermal and mechanical behavior of structural steel beam thermally broken connections and continuous beam thermal bridges. Heat flow through a thermally broken steel end-plate connection was determined experimentally using a calibrated hot box. Results were used to validate a finite element heat transfer model, which was used to perform a parametric analysis on the thermal break using different break and bolt materials. From the analyses, it was determined that the thickness of the break is effective in reducing heat flow and condensation potential. The use of stainless steel or fiber-reinforced bolts provides a significant reduction in heat flow and condensation potential. The mechanical behavior of the thermally-broken connection was analyzed using cantilever bending tests and shear tests on an identical set of connections using three different thicknesses of neoprene pad. Results showed that the rotational stiffness of the connection was reduced approximately linearly with increasing neoprene pad thickness. Shear deflection stiffness was reduced exponentially with increased pad thickness. Structural experimental results were validated against a finite element model which was used to investigate stresses in the end-plate and the bolt. Bolt rupture was found to occur at a reduced applied bending moment due to the increased rotation of the end-plate due to the soft intermediate layer of neoprene between the end-plate and the connection member.</p>
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Malaret, Hiram A. (Hiram Anthony). "Mechanisms in thermal mechanical forming of plates." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/14865.

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Huynh, Kien Khanh. "Human Thermal Comfort." MSSTATE, 2001. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04092001-135104/.

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The purpose of this research is to investigate human comfort criteria under steady-state conditions as a function of ambient air temperature, mean radiant temperature, relative humidity, air velocity, level of activity, and clothing insulation. Since the current ASHRAE Standard 55-1994 is for sedentary activity, this study will consider relative humidity (20% to 65%), dry bulb temperature (73 oF to 82 oF), air velocity (30 fpm and 50 fpm), and sedentary-to-moderate activity. The mean radiant temperature will be taken to be the same as the ambient air temperature. The experimental results collected at the Kansas State University Environmental Test Chamber are compared with the Fanger (1982) thermal comfort model and with ASHRAE Standard 55-1994. The experimental study results agreed well with ASHARE Standard 55-1994 for 1-met activity level (sedentary), and the thermal comfort for 1-met activity level was predicted with reasonable accuracy by Fanger?s (1982) Model. For 2.3 met activity level, the experimental results did not agree with ASHRAE Standard 55-1994 or the Fanger Model predictions.
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Schmidt, Aaron Jerome 1979. "Contact thermal lithography." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/27116.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2004.<br>Includes bibliographical references (p. 65-67).<br>Contact thermal lithography is a method for fabricating microscale patterns using heat transfer. In contrast to photolithography, where the minimum achievable feature size is proportional to the wavelength of light used in the exposure process, thermal lithography is limited by a thermal diffusion length scale and the geometry of the situation. In this thesis the basic principles of thermal lithography are presented. A traditional chrome-glass photomask is brought into contact with a wafer coated with a thermally sensitive polymer. The mask-wafer combination is flashed briefly with high intensity light, causing the chrome features heat up and conduct heat locally to the polymer, transferring a pattern. Analytic and finite element models are presented to analyze the heating process and select appropriate geometries and heating times. In addition, an experimental version of a contact thermal lithography system has been constructed and tested. Early results from this system are presented, along with plans for future development.<br>by Aaron Jerome Schmidt.<br>S.M.
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Thoms, Matthew W. "Adsorption at the nanoparticle interface for increased thermal capacity in solar thermal systems." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/74946.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 86-88).<br>In concentrated solar power (CSP) systems, high temperature heat transfer fluids (HTFs) are responsible for collecting energy from the sun at the solar receiver and transporting it to the turbine where steam is produced and electricity is generated. Unfortunately, many high temperature HTFs have poor thermal properties that inhibit this process, including specific heat capacities which are half that of water. In an effort to enhance the effective heat capacity of these high temperature HTFs and thus increase the efficiency of the CSP systems, adsorption energy at the liquid-solid interface was investigated as a mechanism for increased thermal capacity. Solid ceramic nanoparticles were dispersed in several molten salts at 1-2% by mass with diameters ranging from 5 nm to 15 nm to provide a significant available surface area for adsorption at the particle-molten salt interface. After successful nanofluid synthesis, differential scanning calorimetry (DSC) was used to measure anomalous deviations from the expected heat capacity and enthalpy of fusion values in the nanofluids. The variation in the sensible and latent heat values was determined to be dependent on the presence of sub-100 nm particles and attributed to a layer of salt that remains adsorbed to the surface of the nanoparticles after the bulk of the salt has melted. The adsorbed salt layer is expected to desorb at a higher temperature, providing an increased effective thermal capacity in the vicinity of this desorption temperature. A thermal analysis technique utilizing DSC was proposed to approximate the thickness of the adsorbed layer at the liquid-solid interface, a value that has previously only been obtained using simulation or transmission electron microscopy. More specifically, the adsorbed layer of LiNO3 on Al2O3 particles was determined to be 5.3-7.1 nm thick, similar to the 1-3 nm layers that have been observed in literature for simple, monatomic fluids. The results provide new insight into the nature of adsorption at the liquid-solid interface in more complex fluid and particle systems that can be harnessed for enhanced thermal capacity in HTFs.<br>by Matthew W. Thoms.<br>S.M.
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Haskaraman, Feyza. "Thermal and hydraulic analysis of the adsorption bed of the adsorptive thermal battery." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/105706.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (page 23).<br>Electric vehicles (EVs) have a drawback of relatively short drive range that affects their adoption rate. In order to increase the drive range of EVs, replacing heating, ventilation and air conditioning (HVAC) system with a novel absorbent system of materials and methods is widely investigated. This work focuses on the analysis of the design of such a system to suggest efficiency improvements. The thermal insulation and choice of pump required for the optimal function of the adsorptive bed that carries the novel material are analyzed respectively to understand system performance. A thermal resistance analysis was performed in order to understand the undesirable heat loss from the system that decreases the efficiency. Moreover, pressure loss in the piping system was determined theoretically to choose a compatible pump. This analysis also resulted in a modular code that can be used to test different design parameters for future work,<br>by Feyza Haskaraman.<br>S.B.
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Donovan, Adam. "Vehicle Level Transient Aircraft Thermal Management Modeling and Simulation." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1472236965.

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McEuen, Scott Jacob. "Thermal analysis of biochemical systems." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81702.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 109-112).<br>Scientists, both academic and industrial, develop two main types of drugs: 1) small molecule drugs, which are usually chemically synthesized and are taken orally and 2) large molecule, biotherapeutic, or protein-based drugs, which are often synthesized via ribosome transcription in bacteria cells and are injected. Historically, the majority of drug development, revenue, and products has come from small molecule drugs. However, recently biotherapeutic drugs have become more common due to their increased potency and specificity (the ability to chemically bond to the targeted protein of interest). Researchers now estimate that as much as 50% of current drug development activities (pre-market approval) are focused on these protein-based drugs. There are several well-documented steps necessary in the development of a new large molecule drug. One critical element during the end of the biotherapeutic drug discovery phase and the beginning of the manufacturing phase is known as preformulation or formulation development. During this stage scientists systematically test the effects of adding various excipients (non-protein additives added to enhance the protein stability, solubility, activity of the drug, etc.) to the potential large molecule drug. Differential scanning calorimetry (DSC) is a common technique used to perform these formulation studies. In a classic DSC experiment, a protein is heated from 20-80°C and the heat absorbed while the protein unfolds is measured. Many researchers prefer the use of a DSC instrument because of its label-free nature, meaning that no fluorescent or radio-labeled tag is necessary to perform the measurement. The heat absorbed during the unfolding event(s) is directly measured. However, current commercial DSC instruments suffer from high protein consumption (especially when compared to other labeled techniques), low sensitivity, and slow throughput. The aim of this thesis is to address two of the three areas mentioned above: high protein consumption and slow throughput. Since many formulation development studies are performed at therapeutic or high protein concentrations, one can reduce the experimental cell volume and thereby reduce the amount of protein material consumed. However, since there is less sample, less heat is produced. While in the literature there are several heat transfer models that describe how a DSC instrument literature there are several heat transfer models that describe how a DSC instrument functions, there are surprisingly few heat transfer models that detail how ambient temperature disturbances impact the thermal measurement. To better describe this behavior, a simplified state-space thermal model was created to predict the disturbance rejection of a custom DSC instrument. This model was verified experimentally using linear stochastic system identification techniques. To reduce sample throughput, the prototype calorimeter cell was made from disposable materials. Because the majority of protein systems are thermodynamically irreversible, at elevated temperatures the protein solution often aggregates and needs to be cleaned before a subsequent experiment can be run. This cleaning process constitutes a significant portion of the overall time to run an experiment. This thesis documents a fully functional DSC instrument that, while not completely disposable, has been designed, built, and tested with disposable microfluidic materials. Future work would then solve the technical hurdles of repeatably loading disposable microfluidic cells into the DSC instrument.<br>by Scott Jacob McEuen.<br>Ph.D.
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Goodson, Kenneth E. (Kenneth Eugene). "Thermal conduction in microelectronic circuits." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12615.

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Books on the topic "Mechanical and thermal engineering"

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Evgova, Jovan. Thermal engineering research developments. Nova Science Publishers, 2009.

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Jovan, Evgova, and Kostadinov Ognjan, eds. Thermal engineering research developments. Nova Science Publishers, 2009.

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Khurmi, R. S. A textbook of mechanical technology (thermal engineering). Chand, 1993.

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Stoecker, W. F. Microcomputercontrol of thermal and mechanical systems. Van Nostrand Reinhold, 1989.

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Kakaç, Sadik. Two-Phase Flow Heat Exchangers: Thermal-Hydraulic Fundamentals and Design. Springer Netherlands, 1988.

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Morehouse, Jeffrey H. Thermal analyses of power subsystem components: Final technical report. National Aeronautics and Space Administration, 1990.

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1932-, Webster John G., ed. Mechanical variables measurement: Solid, fluid, and thermal. CRC Press, 2000.

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Hetnarski, Richard B. Thermal stresses: Advanced theory and applications. Springer, 2009.

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Die casting engineering: A hydraulic, thermal, and mechanical process. Marcel Dekker, 2005.

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A, Stoecker P., ed. Microcomputer control of thermal and mechanical systems. Van Nostrand Reinhold, 1989.

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Book chapters on the topic "Mechanical and thermal engineering"

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Madhusudana, C. V. "Thermal Constriction Resistance." In Mechanical Engineering Series. Springer New York, 1996. http://dx.doi.org/10.1007/978-1-4612-3978-9_2.

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Madhusudana, C. V. "Thermal Constriction Resistance." In Mechanical Engineering Series. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01276-6_2.

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Post, Daniel, Bongtae Han, and Peter Ifju. "Thermal Deformations in Electronic Packaging." In Mechanical Engineering Series. Springer US, 1994. http://dx.doi.org/10.1007/978-1-4612-4334-2_10.

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Constantinescu, V. N. "Thermal Effects in Incompressible Flow." In Mechanical Engineering Series. Springer New York, 1995. http://dx.doi.org/10.1007/978-1-4612-4244-4_7.

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Gogoi, T. K., and U. S. Dixit. "Basics and Applications of Thermal Engineering." In Introduction to Mechanical Engineering. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78488-5_5.

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Madhusudana, C. V. "Special Topics in Thermal Contact Conductance." In Mechanical Engineering Series. Springer New York, 1996. http://dx.doi.org/10.1007/978-1-4612-3978-9_7.

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Madhusudana, C. V. "Solid Spot Thermal Conductance of a Joint." In Mechanical Engineering Series. Springer New York, 1996. http://dx.doi.org/10.1007/978-1-4612-3978-9_3.

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Kaviany, M. "Thermal Nonequilibrium Between Fluid and Solid Phases." In Mechanical Engineering Series. Springer New York, 1995. http://dx.doi.org/10.1007/978-1-4612-4254-3_7.

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Madhusudana, C. V. "Solid Spot Thermal Conductance of a Joint." In Mechanical Engineering Series. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01276-6_3.

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Rupesh, P. L., and Arulprakasajothi. "Thermal Distribution on Gas Turbine Blade Using Thermal Paint." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6619-6_11.

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Conference papers on the topic "Mechanical and thermal engineering"

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Wei, Ming-Tzo, and H. Daniel Ou-Yang. "Thermal and non-thermal intracellular mechanical fluctuations of living cells." In SPIE NanoScience + Engineering, edited by Kishan Dholakia and Gabriel C. Spalding. SPIE, 2010. http://dx.doi.org/10.1117/12.860697.

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Kaiser, Mary E., Matthew J. Morris, Jason Hansen, et al. "ACCESS: thermal mechanical design and performance." In SPIE Optical Engineering + Applications, edited by Howard A. MacEwen and James B. Breckinridge. SPIE, 2013. http://dx.doi.org/10.1117/12.2024571.

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Sadeghipour, Sadegh M., and Mehdi Asheghi. "Design in the Thermal Fluids Engineering." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-62116.

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Design is seen as the magic word and being a design engineer is considered to be the key to success in the job market by many of the mechanical engineering students. However, it is always assumed that the mechanical systems not the thermal engineers are indeed design engineers by education and practice. This notion probably stems from the fact that most of the thermal fluid courses in mechanical engineering curriculum seem to have been defined and developed to prepare undergraduate students for going to graduate school rather than the job market. The undergraduate courses usually emphasize on the theories with less attention to the design and application aspects. Perhaps, the responsibility of thermal engineering educators is to correct this notion by emphasizing more on the application and design in the existing courses or alternatively to develop and offer new courses on more applied topics. In this paper, we will report an integrated approach in teaching topics in fins and fin assemblies, which includes class lectures, laboratory experiments, ANSYS simulations and design competition. In this manuscript, we will report on the details of this approach including the procedures, methods, our observations, and the students’ feedbacks.
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Hu, Hanping, and Yandong Wang. "Analysis of Thermal-Mechanical Coupling and Thermal Wave Penetration Depth for Thermo-Acoustic Emission." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-62861.

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In this work, some analyses of a generalized expression of the thermo-acoustic (TA) emission are carried out. The results of the study clearly show that a wideband flat amplitude-frequency response mostly in ultrasonic region exists for TA emission from not only porous silicon (PS) but any solid, and the fully thermal-mechanical coupling and effective thermal-wave penetration depth should be taken into account for the calculation of its signal magnitude and frequency range. Problems occurring in Nature paper on the thermally induced ultrasonic emission from PS are also pointed out and discussed. Besides, the performance evaluation techniques for both TA material and its backing are presented.
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Sorensen, I., M. Ellis, C. Dancey, B. Vick, D. Jaasma, and T. Diller. "An Introductory Course in Thermal Fluid Engineering." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1399.

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Abstract Experiences related to a new sophomore level course, “Introduction to Thermal Fluid Engineering,” are described. Several hundred students have taken the course and are currently enrolled in the follow-on courses in thermodynamics, fluid mechanics, and heat transfer. The introductory course is structured as a two-hour per week lecture with a laboratory that meets three times during the semester. Although thermodynamics, fluid mechanics, and heat transfer subjects are introduced sequentially during the course, the overlap and inter-relationships between topics are emphasized. It has been beneficial both for students and the faculty teaching the course to see the bigger picture of the three courses as a whole rather than as separate topics. The open laboratories are manned by a graduate student or senior who guides the students through hands-on experiments. Each of the three simple experiments is designed to illustrate important principles and reinforce the computational skills of the students. A web site has been established to help guide the students in preparing the written portion of the laboratory report. Team teaching of some sections has been tried and compared to the standard one teacher per section approach. Feedback from the students indicated a surprising acceptance of having several teachers for a course when they were well coordinated. One advantage mentioned by the students was to introduce them to more of the mechanical engineering faculty early in their studies. Because this is the first course requiring engineering analysis taught by the mechanical engineering faculty, it provides the opportunity to direct them in their problem solving and organizational skills that will be useful throughout the rest of their courses. Student evaluations are included as part of the results presented.
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Burzo, Mihai, Mohamed Abouelenien, David Van Alstine, and Kristen Rusinek. "Thermal Discomfort Detection Using Thermal Imaging." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-72162.

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Effective energy management in the buildings is one of the key factors impacting the overall energy consumption, and thus has important consequences on climate and the environment. Detecting human thermal discomfort can be potentially used to reduce energy consumption in both buildings and vehicles, while maintaining the thermal comfort sensation of the occupants. This paper proposes a non-contact approach that relies on the thermal features obtained from thermal imaging (owing to its advantage as a noninvasive and noncontact method), in order to automatically detect the thermal discomfort level without any explicit input from the user. This research makes three contributions. First, a novel dataset of thermal recordings of 50 subjects is collected. Second, we extract and analyze features from two different thermal cameras in order to accurately detect the thermal discomfort levels of subjects. Third, we explore the capabilities of the cameras features in detecting seven levels of comfort/discomfort levels within the three categories of comfortable, cold, and hot. Our approach is expected to enable innovative adaptive control scenarios for enclosed environments as well as an important reduction in energy consumption in both buildings and vehicles.
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Masuoka, Takashi, Yasuyuki Takatsu, and Itsuhei Kohri. "Thermal Sensation Under Unsteady Thermal Environments." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-39630.

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As the absolute level of thermal sensation is vague for human beings, one cannot correctly select the absolute level of the multi-point thermal sensation scale with any kinds of precise classification. To achieve a breakthrough in such a situation, we propose a new voting method based on the relative change of thermal sensation, and investigate the thermal sensation under the unsteady thermal environments. It is shown that the new voting method is essential for the evaluation of thermal sensation under the unsteady environments and brings some aspects of the thermal sensation under the unsteady environments. Furthermore, we discuss the standardization of the thermal sensation in detail, and propose a new parameter for the standardization.
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Jensen, Michael K., Richard N. Smith, Deborah A. Kaminski, and Amir Hirsa. "Towards an Integrated Thermal/Fluids Engineering Curriculum." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0631.

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Abstract We present a new approach to teaching the core thermal/fluids curriculum for undergraduate programs in engineering. Traditional thermodynamics, fluid mechanics, and heat transfer classes are being replaced with two integrated courses and a laboratory in which the three disciplines are taught simultaneously to show interconnections and transferability of concepts and ideas, with an emphasis on the way they occur in engineering practice. This approach seeks to improve both the context and manner in which the subject matter is covered. Our goals are to enhance the physical intuition of our students, to stimulate their ability to think critically and synthesize information, and to make clearer the relevance of the fundamentals to advanced analytical and computational tools.
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Silva, Monica B., S. M. Guo, Patrick F. Mensah, and Ravinder Diwan. "Thermal Conductivity Prediction for Thermal Barrier Coatings." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-38728.

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Thermal barrier coatings (TBCs) are used in gas turbine engines to achieve a higher working temperature and thus lead to a better efficiency. Yttria-Stabilized-Zirconia (YSZ), a material with low thermal conductivity, is commonly used as the TBC top coat to provide the thermal barrier effect. In this paper, an analytical model is proposed to estimate the effective thermal conductivity of the TBCs based on the microstructures. This model includes the micro structure details, such as grain size, pore size, volume fraction of pores, and the interfacial resistance. To validate the model, two sets of TBC samples were fabricated and tested for thermal conductivity and associated microstructures. The first set of samples were disk shaped YSZ-Al2O3 samples fabricated using a pressing machine. The YSZ-Al2O3 powder mixture was 0, 1, 2, 3, 4 and 5 wt% Al2O3/YSZ powder ratio. The second set of samples were fabricated by Atmospheric Plasma Spray process for two different microstructure configurations, standard (STD) and vertically cracked (VC), at two different thicknesses, 400 and 700 urn respectively. A laser flash system was used to measure the thermal conductivity of the coatings. Experiments were performed over the temperature range from 100°C to 800°C. The porosity of the YSZ samples was measured using a mercury porosimetry analyzer, POREMASTER 33 system. A Scanning Electron Microscope (SEM) was used to study the microstructure of the samples. It is observed that the microstructure and the porosity are directly linked with the thermal conductivity values. The relationship of the properties to the real microstructure determines the validity of the proposed model.
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Pinheiro Ramos, Nícolas, Luís Felipe dos Santos Carollo, and Sandro Metrevelle Marcondes de Lima e Silva. "Comparison of Different Thermal Models to Estimate Thermal Properties." In 24th ABCM International Congress of Mechanical Engineering. ABCM, 2017. http://dx.doi.org/10.26678/abcm.cobem2017.cob17-1150.

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Reports on the topic "Mechanical and thermal engineering"

1

Broesius, J. Y. Technical abstracts: Mechanical engineering, 1990. Office of Scientific and Technical Information (OSTI), 1991. http://dx.doi.org/10.2172/5563457.

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Sadlon, Richard J. Mechanical Applications in Reliability Engineering. Defense Technical Information Center, 1993. http://dx.doi.org/10.21236/ada363860.

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Denney, R. M., K. L. Essary, M. S. Genin, H. H. Highstone, and J. D. Hymer. Mechanical Engineering Department engineering research: Annual report, FY 1986. Edited by S. O. Taft. Office of Scientific and Technical Information (OSTI), 1986. http://dx.doi.org/10.2172/6536507.

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Scott, J., and R. Brady. Mechanical testing of selected engineering plastics. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6952346.

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Sides, Scott W. Thermal-Mechanical Stress in Semiconductor Devices. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1471421.

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Murphy, Andrew, and Michael Stender. Mechanical-Thermal Workflow User?s Guide. Office of Scientific and Technical Information (OSTI), 2022. http://dx.doi.org/10.2172/1884887.

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Gagarin, A. YU, S. I. Kazakov, and V. E. Ovsyannikov. Information search engine «Technology of mechanical engineering». OFERNIO, 2023. http://dx.doi.org/10.12731/ofernio.2023.25142.

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Dai, Steve Xunhu, and Robert Chambers. Thermal mechanical stress modeling of GCtM seals. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1222660.

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Hardy, Robert Douglas, David R. Bronowski, Moo Yul Lee, and John H. Hofer. Mechanical properties of thermal protection system materials. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/923159.

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White, D. Electro-Thermal-Mechanical Simulation Capability Final Report. Office of Scientific and Technical Information (OSTI), 2008. http://dx.doi.org/10.2172/928537.

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