Abstract:
:The main mass of material found in teeth is dentine, a bone-like tissue, riddled with micron-sized tubules and devoid of living cells. It provides support to the outer wear-resistant layer of enamel, and exhibits toughening mechanisms which contribute to crack resistance. And yet unlike most bone tissues, dentine does not remodel and consequently any accumulated damage does not 'self repair'. Because damage containment followed by tissue replacement is a prime reason for the crack-arresting microstructures found in most bones, the occurrence of toughening mechanisms without the biological capability to repair is puzzling. Here we consider the notion that dentine might be overdesigned for strength, because it has to compensate for the lack of cell-mediated healing mechanisms. Based on our own and on literature-reported observations, including quasistatic and fatigue properties, dentine design principles are discussed in light of the functional conditions under which teeth evolved. We conclude that dentine is only slightly overdesigned for everyday cyclic loading because usual mastication stresses may come close to its endurance strength. The in-built toughening mechanisms constitute an evolutionary benefit because they prevent catastrophic failure during rare overload events, which was probably very advantageous in our hunter gatherer ancestor times. From a bio-inspired perspective, understanding the extent of evolutionary overdesign might be useful for optimising biomimetic structures used for load bearing.
journal_name
Bioinspir Biomimjournal_title
Bioinspiration & biomimeticsauthors
Zaslansky P,Currey JD,Fleck Cdoi
10.1088/1748-3190/11/5/051003subject
Has Abstractpub_date
2016-09-12 00:00:00pages
051003issue
5eissn
1748-3182issn
1748-3190journal_volume
11pub_type
杂志文章abstract::Research on quadrupedal robots inspired by canids or felids have been widely reported and demonstrated. However, none of these legged robots can deal with difficult environments that include water, such as small lakes, streams, rain, mud, flooded terrain, etc. In this paper, we present for the first time a kinematic a...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/ab3d05
更新日期:2019-09-13 00:00:00
abstract::Pneumatic artificial muscles (PAMs) are actuators known for their high power to weight ratio, natural compliance and light weight. Due to these advantages, PAMs have been used for orthotic devices and robotic limbs. Small scale PAMs have the same advantages, as well as requiring greatly reduced volumes with potential ...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/10/5/055006
更新日期:2015-09-28 00:00:00
abstract::Birds fly in dynamic flight conditions while maintaining aerodynamic efficiency. This agility is in part due to specialized feather systems that function as flow control devices during adverse conditions such as high-angle of attack maneuvers. In this paper, we present an engineered three-dimensional leading-edge devi...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/ab36ad
更新日期:2019-08-29 00:00:00
abstract::Limitations in actuation, sensing, and computation have forced small legged robots to rely on carefully tuned, mechanically mediated leg trajectories for effective locomotion. Recent advances in manufacturing, however, have enabled in such robots the ability for operation at multiple stride frequencies using multi-deg...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/ab295b
更新日期:2019-07-01 00:00:00
abstract::Previous research on the flexible structure of flapping wings has shown an improved propulsion performance in comparison to rigid wings. However, not much is known about this function in terms of power efficiency modification for flapping wing energy devices. In order to study the role of the flexible wing deformation...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/8/3/036011
更新日期:2013-09-01 00:00:00
abstract::Films of conducting polymers when used as electrodes in an electrolytic solution oxidize and reduce under the flow of anodic and cathodic currents, respectively. The electrochemical reactions induce conformational movements of the chains, generation or destruction of free volume and interchange of ions and solvent wit...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/3/3/035004
更新日期:2008-09-01 00:00:00
abstract::The clap-and-fling effect, first observed in a number of insects, serves as a lift-enhancing mechanism for bio-inspired flapping wing micro aerial vehicles (MAV). In our comprehensive literature survey, we observe that the effect manifests differently in insects and contemporary MAVs; insects have active control over ...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/ab0477
更新日期:2019-02-27 00:00:00
abstract::The Wyoming Information, Signal Processing, and Robotics Laboratory is developing a wide variety of bio-inspired vision sensors. We are interested in exploring the vision system of various insects and adapting some of their features toward the development of specialized vision sensors. We do not attempt to supplant tr...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/4/4/046002
更新日期:2009-12-01 00:00:00
abstract::Starting from biological systems, we review the interest of active perception for object recognition in an autonomous system. Foveated vision and control of the eye saccade introduce strong benefits related to the differentiation of a 'what' pathway recognizing some local parts in the image and a 'where' pathway relat...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章,评审
doi:10.1088/1748-3190/ab504c
更新日期:2020-02-14 00:00:00
abstract::This work pursues a feedforward control algorithm for high-speed legged locomotion over uneven terrain. Being able to rapidly negotiate uneven terrain without visual or a priori information about the terrain will allow legged systems to be used in time-critical applications and alongside fast-moving humans or vehicles...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/9/3/036018
更新日期:2014-09-01 00:00:00
abstract::Aiming to produce bioinspired impact and puncture resistant materials, the mesocarp of the Brazil nut (Bertholletia excelsa) was characterized. The mesocarp composition was investigated by chemical extraction and its microstructure was analyzed by optical microscopy and microtomography (microCT). A compression test ev...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/ab2298
更新日期:2019-07-03 00:00:00
abstract::Silk produced by the silkworm Bombyx mori is an attractive material because of its luster, smooth and soft texture, conspicuous mechanical strength, good biocompatibility, slow biodegradation, and carbon neutral synthesis. Silkworms have been domesticated and bred for production of better quality and quantity of silk,...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章,评审
doi:10.1088/1748-3190/aabbe9
更新日期:2018-05-15 00:00:00
abstract::Unidirectional composites inspired from biological materials such as nacre are composed of stiff platelets arranged in a staggered manner within a soft matrix. Elaborate analyses have been conducted on the aforementioned composites and they are found to have excellent mechanical properties like stiffness, strength and...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/aa9945
更新日期:2017-12-22 00:00:00
abstract::Burst-and-coast swimming is an intermittent mode of locomotion used by various fish species. The intermittent gait has been associated with certain advantages such as stabilizing the visual field, improved sensing ability, and reduced energy expenditure. We investigate burst-coast swimming in rummy nose tetra fish (He...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/abb521
更新日期:2020-11-07 00:00:00
abstract::In this paper, we describe our research on bio-inspired locomotion systems using deformable structures and smart materials, concretely shape memory alloys (SMAs). These types of materials allow us to explore the possibility of building motor-less and gear-less robots. A swimming underwater fish-like robot has been dev...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/6/4/045005
更新日期:2011-12-01 00:00:00
abstract::Biomimetics, the transfer of functional principles from living systems into product designs, is increasingly being utilized by engineers. Nevertheless, recurring problems must be overcome if it is to avoid becoming a short-lived fad. Here we assess the efficiency and suitability of methods typically employed by examin...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/aa86ff
更新日期:2017-09-26 00:00:00
abstract::Biological surfaces are multifunctional interfaces between the organisms and their environment. Properties such as the wettability and adhesion of particles are linked to the micro- and nanostructures of their surfaces. In this study, we used plant and artificial surfaces covered with wax crystals to develop a low-cos...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/3/4/046002
更新日期:2008-12-01 00:00:00
abstract::This paper presents the stability analysis of the leading edge spar of a flapping wing unmanned air vehicle with a compliant spine inserted in it. The compliant spine is a mechanism that was designed to be flexible during the upstroke and stiff during the downstroke. Inserting a variable stiffness mechanism into the l...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/10/6/065003
更新日期:2015-10-26 00:00:00
abstract::Passive exoskeletons have potential advantages in reducing metabolic energy cost. We consider a passive elastic exoskeleton (peEXO) providing hip flexion moment to assist hip flexors during walking, our goal is to use a biomechanical model to explore the biological mechanics and energetics of the hip joint muscle-tend...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/aaeefd
更新日期:2018-12-04 00:00:00
abstract::This paper details the development of a nano-scale (>15 cm) robotic samara, or winged seed. The design of prototypes inspired by naturally occurring geometries is presented along with a detailed experimental process which elucidates similarities between mechanical and robotic samara flight dynamics. The helical trajec...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/5/4/045009
更新日期:2010-12-01 00:00:00
abstract::Polymer nanocomposites render a range of outstanding materials from natural products such as silk, sea shells and bones, to synthesized nanoclay or carbon nanotube reinforced polymer systems. In contrast to the fast expanding interest in this type of material, the fundamental mechanisms of their mixing, phase behavior...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/11/5/055008
更新日期:2016-09-13 00:00:00
abstract::In this paper, we present a numerical model capable of solving the fluid-structure interaction problems involved in the dynamics of skeleton-reinforced fish fins. In this model, the fluid dynamics is simulated by solving the Navier-Stokes equations using a finite-volume method based on an overset, multi-block structur...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/ab0fbe
更新日期:2019-04-10 00:00:00
abstract::Nacre-mimetic epoxy matrix composites reinforced with readily available micron-sized high aspect ratio C-glass flakes were fabricated by a relatively simple, single-step, scalable, time, cost and man-power effective processing strategy: hot-press assisted slip casting (HASC). HASC enables the fabrication of preferenti...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/12/1/016002
更新日期:2016-12-05 00:00:00
abstract::In this paper, we study the behavioral response of rats to a robotic rat during multi-rat interaction. Experiments are conducted in an open-field where a robotic rat called WR-5 is put together with three laboratory rats. WR-5 is following one rat (target), while avoiding the other two rats (outside observers) during ...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/10/5/056011
更新日期:2015-09-28 00:00:00
abstract::Specialized sensory hairs are important biological sensors for arthropods to detect and recognize environmental conditions including acoustic, pressure and airflow signals. However, the present design methodology of such biomimic micro devices are mainly depending on shape mimicking, which greatly restricts their perf...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/ab8f6c
更新日期:2020-08-12 00:00:00
abstract::A fiber optic sensor inspired by the compound eye of the common housefly, Musca domestica, has been developed. The sensor coupled with analog preprocessing hardware has the potential to extract edge information quickly and in parallel. The design is motivated by the parallel nature of the fly's vision system and its d...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/3/2/026003
更新日期:2008-06-01 00:00:00
abstract::Birds demonstrate that flapping-wing flight (FWF) is a versatile flight mode, compatible with hovering, forward flight and gliding to save energy. This extended flight domain would be especially useful on mini-UAVs. However, design is challenging because aerodynamic efficiency is conditioned by complex movements of th...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3182/2/4/002
更新日期:2007-12-01 00:00:00
abstract::Insects are the main source of inspiration for flapping-wing micro air vehicles (FWMAVs). They frequently encounter wind gust perturbations in natural environments, and effectively cope with these perturbations. Here, we investigated the rapid gust response of flies to instruct the gust stability design of FWMAVs. A n...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/ab97fc
更新日期:2020-07-07 00:00:00
abstract::The propulsive dynamics of a flexible undulating foil in a self-propelled swimming configuration near a wall is studied experimentally. Measurements of the swimming speed and the propulsive force are presented, together with image acquisition of the kinematics of the foil and particle image velocimetry (PIV) in its wa...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/10/1/016003
更新日期:2015-01-05 00:00:00
abstract::Randomness is common in biological and artificial systems, resulting either from stochasticity of the environment or noise in organisms or devices themselves. In locomotor control, randomness is typically considered a nuisance. For example, during dynamic walking, randomness in stochastic terrain leads to metastable d...
journal_title:Bioinspiration & biomimetics
pub_type: 杂志文章
doi:10.1088/1748-3190/abac47
更新日期:2020-08-04 00:00:00