Read e-book online Adaptive Structures: Engineering Applications PDF

By David Wagg, Ian Bond, Paul Weaver, Michael Friswell

ISBN-10: 0470056975

ISBN-13: 9780470056974

ISBN-10: 0470512040

ISBN-13: 9780470512043

Adaptive buildings have the capacity to adapt, evolve or swap their homes or behaviour based on the surroundings round them. The research and layout of adaptive buildings calls for a hugely multi-disciplinary procedure together with parts of  constructions, fabrics, dynamics, keep an eye on, layout and idea taken from organic structures. improvement of adaptive buildings has been happening in a variety of business purposes, yet is very complex within the aerospace and area expertise region with morphing wings, deployable house buildings; piezoelectric units and vibration regulate of tall buildings.

Bringing jointly many of the optimum international specialists in adaptive constructions, this particular text:

  • comprises discussions of the appliance of adaptive constructions within the aerospace, army, civil engineering buildings, automobile and MEMS.
  • provides the impression of organic idea in designing adaptive constructions, fairly using hierarchy in nature, which usually induces multi-functional habit.
  • units the time table for destiny examine in adaptive constructions in a single detailed unmarried quantity.

Adaptive constructions: Engineering purposes is vital interpreting for engineers and scientists operating within the fields of clever fabrics, structural vibration, regulate and comparable shrewdpermanent applied sciences. it's going to even be of curiosity to senior undergraduate and postgraduate study scholars in addition to layout engineers operating within the aerospace, mechanical, electric and civil engineering sectors.

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Additional info for Adaptive Structures: Engineering Applications

Example text

If the above equation cannot be met at a certain time instant t, then the duty cycle, environment and monitoring task will not work with the proposed autonomous sensor. 6 EXPERIMENTAL VALIDATION To validate our prototype concept, the system’s capabilities are demonstrated in the laboratory. 5, is tested for the initial experiments. The bolted joint structure consists of two aluminum beams connected with four bolts. A piezoelectric patch is attached to this structure; the piezoelectric acts as a self-sensing actuator.

To simulate this environment, the TEGs were fixed between a heat sink and a thin aluminum plate, which was then attached to a hot plate using thermal grease. 12. In order to monitor the temperature of the hot and cold side of the TEG, Omega CO-1 thermocouples were used. 13 mm thick so it could be placed bonded to the hot and cold sides of the TEG. A simple circuit has been constructed to take the electrical energy generated by the two energy harvesting devices and store it in a nickel metal hydride battery.

The most important part of the display is the damage metric value, which is updated with each measurement to indicate how much damage is present in the structure. Impedance measurements are taken over the range of 10–30 kHz. 8. As expected from a sinc function, the auto spectrum is a flat line indicating that every frequency of interest is being excited. 8, it should be noted that 512 frequency components are displayed, representing 0 to 64 200 Hz. In reality, only half of the spectrum is used, so 256 frequency lines represent 0 to 32 100 Hz.

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Adaptive Structures: Engineering Applications by David Wagg, Ian Bond, Paul Weaver, Michael Friswell

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