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test) and the hardened concrete properties, (compressive strength,splitting tensile strength, flexural strength and modulus of elasticity)were carried out. A total of thirty concrete mixes with different cementcontents (300, 350, and 400 Kg/m3) at w/c ratio (0.5) were made and thepercentage of substitution of natural concrete coarse aggregate by therecycled concrete coarse aggregate subjected to fire durations (1,2 and 3hours) at fire temperature (600ºC) was (0%, 25%, 50% and 100%). Inthe process of mixing, equal consistence among all concrete mixes wasachieved. The obtained results indicate that the recycled coarseaggregate subjected to fire can successfully be used for makingstructural concrete.]]>
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enough controlled charges and provide a wide range of controlledvoltages to the actuator. In this paper, switched based multistage chargepump driven by a controlled low voltage switching power supply and avoltage driver is proposed as a wide range output voltage supply.Spring-roll dielectric elastomer optimal design parameters according to[1] areh1p=5, h2p=2, a=10. It is proven that h2p has a subtle effect on bothactuationl1 and dimensionless axial force p/mL2L3 however it has a greateffect on the applied voltage required activating the actuator.Furthermore, when l2p increases, the applied voltage decreases and theproblems of high voltage are avoided. Therefore the optimal designparameters modified to l1p=5, l2p=5, a=10 instead of l1p=5, l2p=2,a=10.In this paper, based on the equations of state, new approaches fordesigning a spring-roll dielectric elastomer actuator have been developed.The key issue of the actuation range depends upon weather the actuatorhas a fixed load or variable multi-loads.The achieved results based on the proposed approaches show that theapplied voltage has been reduced and the design of the actuator is gettingsimpler]]>
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system with the proposed controller has been tested through a step < br />change in irradiation level. Simulation results show that accurate MPPTtracking performance of the proposed system has been achieved.Further, the performance of the proposed artificial neural network(ANN) controller is compared with a PID controller through simulationstudies. Obtained results demonstrate the effectiveness and superiority ofthe proposed approach.]]>
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