My Account | Careers | Downloads | Blog

PROJECT TITLE :

Rate-state friction in microelectromechanical systems interfaces: Experiment and theory

ABSTRACT:

A microscale, multi-asperity frictional test platform has been designed that allows for wide variation of normal load, spring constant, and puller step frequency. Two different monolayer coatings have been applied to the surfaces—tridecafluorotris(dimethylamino)silane (FOTAS, CF3(CF2)5(CH2)2 Si(N(CH3)2)3) and octadecyltrichlorosilane (OTS, CH3(CH2)17SiCl3). Static friction aging was observed for both coatings. Simulating the platform using a modified rate-state model with discrete actuator steps results in good agreement with experiments over a wide control parameter subspace using system parameters extracted from experiments. Experimental and modeling results indicate that (1) contacts strengthen with rest time, exponentially approaching a maximum value and rejuvenating after inertial events, and (2) velocity strengthening is needed to explain the shorter than expected length of slips after the friction block transitions from a stick state. We suggest that aging occurs because tail groups in the monolayer coatings reconfigure readily upon initial contact with an opposing countersurface. The reconfiguration is limited by the constraint that head groups are covalently bound to the substrate.


Did you like this research project?

To get this research project Guidelines, Training and Code... Click Here

PROJECT TITLE : Multi-Core Embedded Wireless Sensor Networks Architecture and Applications - 2014 ABSTRACT: Technological advancements in the silicon industry, as predicted by Moore's law, have enabled integration of billions
PROJECT TITLE : Multicast Capacity in MANET with Infrastructure Support - 2014 ABSTRACT: We study the multicast capacity under a network model featuring both node's mobility and infrastructure support. Combinations between
PROJECT TITLE : Joint Routing and Resource Allocation for Delay Minimization in Cognitive Radio Based Mesh Networks - 2014 ABSTRACT: This paper studies the joint design of routing and resource allocation algorithms in cognitive
PROJECT TITLE : Efficient Data Collection for Large-Scale Mobile Monitoring Applications - 2014 ABSTRACT: Radio frequency identification (RFID) and wireless sensor networks (WSNs) have been popular in the industrial field,
PROJECT TITLE :Distance Bounding A Practical Security Solution for Real-Time Location Systems - 2013ABSTRACT:The need for implementing adequate security services in industrial applications is increasing. Verifying the physical

Ready to Complete Your Academic MTech Project Work In Affordable Price ?

Project Enquiry