Download PDF by Martin Wiedemann, Michael Sinapius: Adaptive, tolerant and efficient composite structures

By Martin Wiedemann, Michael Sinapius

ISBN-10: 3642291899

ISBN-13: 9783642291890

ISBN-10: 3642291902

ISBN-13: 9783642291906

Composite constructions are best in functionality and construction rate while mixed with clever fabrics making them adaptable to altering operational stipulations.
The particular creation techniques of composites supply the chance to combine extra services hence making the constitution extra useful. lively services could be learned through shrewdpermanent fabrics, e.g. morphing, energetic vibration regulate, lively constitution acoustic keep watch over or constitution wellbeing and fitness tracking. the root is a valid figuring out of fabrics, layout equipment, layout ideas, creation applied sciences and adaptronics. alongside the total technique chain this disciplines jointly carry complicated light-weight options for purposes starting from mechanical engineering to automobiles, airframe and at last house buildings.
This ebook presents the medical foundations in addition to inspiring new rules for engineers operating within the box of composite light-weight structures.

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5. The stress was calculated with respect to the cross section area in each section and the test load. The gradient of the stress/strain curve describes the Young’s modulus in the considered cross section. In addition to that the sensor signal of the piezoelectric transducer was measured during the test (red curve). Discontinuities in the sensor signal would indicate a crack in the 22 P. Wierach Fig. 3 Different integration configurations for macroscopic piezoelectric transducers. a Complete cut out.

It is also feasible to integrate more functionalities than a piezoelectric transducer into the composite. An example is shown in Fig. 16. During the manufacturing process also a micro system (in this case an acceleration sensor) including all necessary circuits and electronics was integrated into a composite to form a combined actuator and sensor module. This module is useful for the control of plate vibrations, since it allows a vibration measurement perpendicular to the plate surface. A piezoceramic transducer alone would only measure the in-plane strain of the plate.

A homogeneous dispersion of the particles in the epoxy resin is fundamental to fabricate specimen with a reproducible quality. Master batches of epoxy resin with Terfenol-D particles were produced with a triple roll mill and with a basket mill. The resin used was the three component system LY556, HY917, HY070. To investigate the influence of particle size and particle content several master batches with different compositions were produced. 2 g/cm3), the manufacturing of specimen with a uniform particle distribution is a very challenging task.

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Adaptive, tolerant and efficient composite structures by Martin Wiedemann, Michael Sinapius

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