This paper presents the integration of a novel mechanical torsion spring regulator into pendulum energy harvester system. was designed to provide same voltage-smoothing benefits flywheel without start-up issues caused by increasing system inertia. In addition, introduction between input and output stages device acts as buffer for any sudden impacts, which not only allows from such events be ful...

after harvesting, pistachio nuts are generally kept in storage before being exported. during handling, thenuts are exposed to external forces that cause mechanical damage to them. the increase of the mechanicaldamage is a function of storage conditions, especially temperature. this research investigated the effect ofstorage temperature (25, 5, -5, -15°c), on the mechanical properties of pistach...

Mechanical and functional properties of metamaterials could be simultaneously manipulated via their architectures. This study proposes multifunctional possessing both load-bearing capacity energy storage capability, comprising multi-phase lattice metamaterial cylindrical battery cells. Defect phase are incorporated into the metamaterials, which then printed with stainless steel powder. The asse...

This study determines the energy of a fatigue-loaded shaft circular cross-section, in stable equilibrium, deflecting during rotation even absence external loads. The is subjected to completely reversed stresses as well torsion and bending varying with introducing fatigue loading problems. research was conducted order establish equilibrium condition at which can operate without axial vibration p...

T.-S. Wei, Prof. J. A. Lewis School of Engineering and Applied Science Wyss Institute for Biologically Inspired Engineering Joint Center for Energy Storage Research Harvard University Cambridge , MA 02138 , USA E-mail: [email protected] F. Y. Fan, Prof. Y.-M. Chiang Department of Materials Science and Engineering Joint Center for Energy Storage Research Massachusetts Institute of Technol...

Explosive dehiscence ballistically disperses seeds in a number of plant species. During dehiscence, mechanical energy stored in specialized tissues is transferred to the seeds to increase their kinetic and potential energies. The resulting seed dispersal patterns have been investigated in some ballistic dispersers, but the mechanical performance of a launch mechanism of this type has not been m...

Over the last few decades, there has been increasing interest in the design and construction of integrated energy conversion and storage systems (IECSSs) that can simultaneously capture and store various forms of energies from nature. A large number of IECSSs have been developed with different combination of energy conversion technologies such as solar cells, mechanical generators and thermoele...

Energy harvesting and storage are the two most important energy technologies developed for portable, sustainable, and self-sufficient power sources for mobile electronic systems. However, both have limitations for providing stable direct-current (DC) with an infinite lifetime. Herein, we integrated a triboelectric nanogenerator (TENG)-based mechanical energy harvester with Li-ion-battery (LIB)-...

The purpose of this study was to examine the mechanical adaptations linked to economical locomotion in cursorial bipeds. We addressed this question by comparing mass-matched humans and avian bipeds (ostriches), which exhibit marked differences in limb structure and running economy. We hypothesized that the nearly 50 per cent lower energy cost of running in ostriches is a result of: (i) lower li...