Static repair

This paper addresses the problem of repairing multiple cracked beams subjected to static load using piezoelectric patches. First, the problem is formulated and solved analytically for the case of two cracks that results in ratio of restoring moments produced by employed piezoelectric patches. Since the ratio is dependent only on crack positions but not their depth, the result obtained for case of two cracks has been extended for the case of multiple cracks.

11p inception36 30-11-2021 5 1   Download

In particular, mobile nodes are effective for adequate field coverage: however, appropriate node movement is critical. In addition, mobile nodes with wireless charging devices can charge the batteries of other nodes. We formulate the problem to extend lifetime and maintain field coverage by determining the positions of mobile nodes that can cover the field effectively and charge the batteries of other nodes simultaneously.

11p blossom162 31-03-2019 30 0   Download

The agency began testing and rating vehicles for side impact protection in the 1997 MY. As with the frontal program, the test protocol was based on an existing Federal standard, FMVSS No. 214 “Side Impact Protection”, and again the test speed was increased by 8 km/h (5 mi/h). 1 Starting with the 2001 MY, the agency began using NCAP to rate vehicles for rollover resistance based on a static measurement of a vehicle’s track width and the height of its center of gravity. The test protocol was not based on an existing Federal standard. The Transportation...

8p nhacnenzingme 23-03-2013 39 3   Download

Engineering technology or mechanical engineering industry is the application of physical principles to create all kinds of machinery and equipment or other useful objects. Mechanical application of thermodynamic principles, the law of conservation of mass and energy to analyze static and dynamic physical systems, for design work in areas such as automotive, aircraft and the other vehicles, heating systems and cooling, household appliances, machinery and production equipment, weapons ...

0p kennybibo 14-07-2012 174 31   Download

The use of fibre optic sensors in structural health monitoring has rapidly accelerated in recent years. By embedding fibre optic sensors in structures (e.g. buildings, bridges and pipelines) it is possible to obtain real time data on structural changes such as stress or strain. Engineers use monitoring data to detect deviations from a structure’s original design performance in order to optimise the operation, repair and maintenance of a structure over time.

272p kennybibo 14-07-2012 99 18   Download