Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 8793 for “"contact"”.
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Contact area between cylinders in rolling contact
The contact area between two rollers or cylinders was investigated both theoretically and experimentally. The theoretical investigation was based on Hertzian theory, while the experimental method used was based on the measurement of contact resistances. The variables in the investigation were the …
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Prediction of the Macroscopic Contact Area in Thermal Contact Resistance
Made available in DSpace on 2014-12-09T17:13:43Z (GMT). No. of bitstreams: 1 6808165.pdf: 2604457 bytes, checksum: 3778cd3b1e03a5af532737b4f598362e (MD5) Previous issue date: 1967
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Localizing external contact using proprioceptive sensors : the contact particle filter
… able to reliably estimate and localize external contacts. This paper introduces the CPF, the Contact Particle Filter, which is a general algorithm for detecting and localizing external contacts on rigid body robots without the need for external sensing. The CPF finds external contact points that …
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Robust multi-contact dynamical motion planning using contact wrench set
… motion for robot with multiple non-coplanar contact on the environment. When the robot interacts with the environment through contact, it relies on the contact forces to generate the desired acceleration. The contact forces have to satisfy some physical constraints, such as lying within the …
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CONTACT PRESSURE MEASUREMENT
… interfaces of bolted joints for the purpose of contact pressure measurement. The ternary semiconductor material A1xGa1-xAs has been known to exhibit piezoresistive behaviour. An investigation was carried out to find out the behaviour of the material and the possibility of configuring it into a …
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Color Contact Microradiography
Made available in DSpace on 2014-12-05T19:37:04Z (GMT). No. of bitstreams: 1 5900590.pdf: 3971306 bytes, checksum: d401f5c8bbfd342231fb7481c5e4031a (MD5) Previous issue date: 1958
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Full-contact poetry
Full-Contact Poetry is a digital play space for children's poetic expression. It is a software environment in which children can express their poetic thoughts, create their interpretations of writing by others and also share these expressions. The environment combines ideas from literary theory and …
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Thermal contact resistance.
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1967.
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Contact thermal lithography
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 …
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Non-contact ultrasound
… development, and evaluation of two novel non-contact ultrasound imaging methods: immersion ultrasound and optical ultrasound. Immersion ultrasound utilizes traditional piezoelectric elements in a tomographic framework to develop new algorithms and acquisition methods for quantification of …
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Contact sensing--a sequential decision approach to sensing manipulation contact features
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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A coupled contact-mechanics computational model for studying deformable human-artifact contact
… of the suit and human resulting from contact interactions is developed. This thesis details the development and validation of a coupled contact-mechanics solver architecture for use in studying the effects of human-artifact interaction, particularly with respect to pressurized softgood …
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Non-contact surface inspection
This thesis describes the development of a non-contact inspection system, used in providing a comparative method for gauging a surface. The purpose of this system is not to measure the 3-D shape of a part. The volume difference between the part to be inspected and a master, is merely part of the …
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Dowel-concrete contact characteristics
In this thesis, the dowel-pulling force and the dowel-concrete coefficient of friction were measured using a novel laboratory setup of vibrating wire strain gauges embedded in both the dowel and concrete. The gages are set to measure the shrinkage strain induced in the concrete that surrounds the …
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Non-Contact Sleep Monitoring
"The road ahead for preventive medicine seems clear. It is the delivery of high quality, personalised (as opposed to depersonalised) comprehensive medical care to all." Burney, Steiger, and Georges (1964) This world's population is ageing, and this is set to intensify over the next forty years. …
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Critical play : alien contact
I argue that the necessity of emancipating the Situationist International (SI) from the historical notion of it as the last movement of the avant-garde in order to take over the spirit of the SI. I claim that necessity of strategically announcing the concept of the Post- Situationist in order to …
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Contact-printed microelectromechanical systems
… The reported fabrication methods employ contact-printing, and avoid fabrication of MEMS diaphragms via wet or deep reactive-ion etching, which in turn removes the need for etch-stops and wafer bonding. Elevated temperature processing is also avoided to enable MEMS fabrication on flexible …
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Contact Pressure Distribution Optimization
A novel design technique that is used to optimize contact pressure distribution was introduced and investigated. The primary objective of this design tool, called the Predicted Displacement Method, was to provide a calculated contact surface shape alteration of a contact body that induces a uniform …
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